CN113277815A - Sludge curing agent for ecological planting and preparation method thereof - Google Patents
Sludge curing agent for ecological planting and preparation method thereof Download PDFInfo
- Publication number
- CN113277815A CN113277815A CN202110574416.4A CN202110574416A CN113277815A CN 113277815 A CN113277815 A CN 113277815A CN 202110574416 A CN202110574416 A CN 202110574416A CN 113277815 A CN113277815 A CN 113277815A
- Authority
- CN
- China
- Prior art keywords
- sludge
- curing agent
- sludge curing
- micro powder
- raw materials
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 143
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 65
- 238000002360 preparation method Methods 0.000 title description 3
- 239000002699 waste material Substances 0.000 claims abstract description 52
- 239000000835 fiber Substances 0.000 claims abstract description 49
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000002893 slag Substances 0.000 claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 27
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 26
- 230000002745 absorbent Effects 0.000 claims abstract description 24
- 239000002250 absorbent Substances 0.000 claims abstract description 24
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 24
- 229920005989 resin Polymers 0.000 claims abstract description 24
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 23
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000010276 construction Methods 0.000 claims abstract description 21
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 21
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 21
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 21
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 21
- 235000010855 food raising agent Nutrition 0.000 claims abstract description 15
- 208000005156 Dehydration Diseases 0.000 claims abstract description 10
- 230000018044 dehydration Effects 0.000 claims abstract description 10
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000002994 raw material Substances 0.000 claims description 34
- 241000196324 Embryophyta Species 0.000 claims description 32
- 229920000058 polyacrylate Polymers 0.000 claims description 22
- 229920000742 Cotton Polymers 0.000 claims description 14
- 240000008042 Zea mays Species 0.000 claims description 14
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 14
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 14
- 235000005822 corn Nutrition 0.000 claims description 14
- 238000005303 weighing Methods 0.000 claims description 12
- 229920002472 Starch Polymers 0.000 claims description 11
- 235000019698 starch Nutrition 0.000 claims description 11
- 239000008107 starch Substances 0.000 claims description 11
- 239000012856 weighed raw material Substances 0.000 claims description 10
- 229920000578 graft copolymer Polymers 0.000 claims description 7
- 235000017060 Arachis glabrata Nutrition 0.000 claims description 4
- 244000105624 Arachis hypogaea Species 0.000 claims description 4
- 235000010777 Arachis hypogaea Nutrition 0.000 claims description 4
- 235000018262 Arachis monticola Nutrition 0.000 claims description 4
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 235000020232 peanut Nutrition 0.000 claims description 4
- 229910052642 spodumene Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- JYLTYGKNPRAOJY-UHFFFAOYSA-N prop-2-enamide;prop-2-enenitrile;prop-2-enoic acid Chemical compound C=CC#N.NC(=O)C=C.OC(=O)C=C JYLTYGKNPRAOJY-UHFFFAOYSA-N 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000010902 straw Substances 0.000 description 30
- 239000000203 mixture Substances 0.000 description 18
- 238000007711 solidification Methods 0.000 description 14
- 230000008023 solidification Effects 0.000 description 13
- 239000000047 product Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000003755 preservative agent Substances 0.000 description 6
- 230000002335 preservative effect Effects 0.000 description 6
- 230000036571 hydration Effects 0.000 description 5
- 238000006703 hydration reaction Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008635 plant growth Effects 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/105—Magnesium oxide or magnesium carbonate cements
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
- A01G24/35—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds containing water-absorbing polymers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental Sciences (AREA)
- Inorganic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a sludge curing agent for ecological planting, which comprises the following components in percentage by mass: 50-70% of modified waste concrete micro powder, 5-10% of lithium slag, 10-35% of plant fiber, 1-4% of ferrous sulfate, 5-20% of active magnesium oxide, 1-5% of super absorbent resin and 3-10% of biological leavening agent; the modified waste concrete micro powder is prepared by utilizing construction waste to carry out sorting, crushing, screening and dehydration treatment. The invention makes full use of the modified waste concrete micro powder, the active magnesium oxide and the lithium slag to provide a weak alkaline environment in a gradient manner, combines the design and optimization means of a curing material system, can further improve the curing effect of the sludge on the basis of meeting the ecological planting requirement, and has remarkable economic and environmental benefits.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a sludge curing agent for ecological planting and a preparation method thereof.
Background
Urban black and odorous water body remediation and agricultural non-point source pollution remediation are important components for protecting great Yangtze river, and have been paid long-term attention by the state as an important link for improving ecological environment. The harmless treatment of the sludge is the key and difficult point of water body treatment, and the main treatment direction is how to effectively realize the recycling of the sludge. From the technical aspect, the sludge treatment is premised on solving the problem of high water content of the sludge, and although a large amount of technical reserves such as the dehydration by physical and chemical actions such as flocculation-solidification and the like exist at home and abroad and have related application cases, the problems of high use cost, low treatment efficiency and the like still exist.
In addition, at present, when sludge solidification is carried out, index design is usually carried out from the perspective of sludge dehydration solidification, and targeted development is not carried out on the use scene of a product after sludge solidification, so that a sludge solidification mode is simple and repeated, and the sludge resource utilization rate is not high. At present, the resource utilization means of the sludge mainly comprises: preparing planting soil, building materials, engineering soil and the like; due to the fact that the planting soil is large in using amount and high in economical efficiency, a large number of researches and reports are made in actual use.
However, the existing sludge solidification modified planting soil technology still has the following problems: 1) the existing sludge solidification mainly focuses on technologies such as dehydration, deodorization and the like, and lacks of a targeted solidification material and a solidification means; for example, most of the existing curing agents are mixtures such as cement, lime and the like, and although the curing agents have various functions such as curing, sterilization and the like, the curing agents are not beneficial to plant growth due to strong basicity in the using process; 2) the existing technology for preparing planting soil by sludge is too single in treatment mode, and has weak pertinence, high cost and difficult implementation particularly in the aspects of harmlessness and solidification of heavy metals and the like.
Disclosure of Invention
The invention mainly aims to solve the problems and the defects of unreasonable curing design, weak material pertinence, poor reliability of harmless technology and the like in the existing technology for preparing the planting soil by curing the sludge, provide a sludge curing agent for ecological planting, fully utilize modified waste concrete micro powder, active magnesium oxide and lithium slag to provide a weak alkaline environment in a gradient manner, combine curing material system design and optimization means, further improve the sludge curing effect on the basis of meeting the ecological planting requirements, and have remarkable economic and environmental benefits.
In order to achieve the purpose, the invention adopts the technical scheme that:
a silt curing agent for ecological planting comprises the following components in percentage by mass: 50-70% of modified waste concrete micro powder, 5-10% of lithium slag, 10-35% of plant fiber, 1-4% of ferrous sulfate, 5-20% of active magnesium oxide, 1-5% of super absorbent resin and 3-10% of biological leavening agent; the modified waste concrete micro powder is prepared by utilizing construction waste to carry out sorting, crushing, screening and dehydration treatment.
In the scheme, the fineness of the modified waste concrete micro powder is less than 0.5mm, the dehydration temperature is 500-800 ℃, and the time is 5-15 min.
In the scheme, the lithium slag is waste slag discharged after lithium is extracted from spodumene, the pH value of the waste slag is 5-7, and the water content of the waste slag is less than or equal to 30%.
In the scheme, the plant fiber is one or more of corn straw fiber, cotton straw fiber and peanut straw fiber; the water content is less than or equal to 30 percent, and the length is less than 2 cm.
In the scheme, the ferrous sulfate is a commercial industrial-grade product, and the content of heavy metal in impurities is less than or equal to 0.1%.
In the scheme, the active magnesium oxide is a commercial industrial-grade product, the effective content of the active magnesium oxide is more than or equal to 90 wt%, and the average particle size is less than 1500 nm.
In the scheme, the super absorbent resin is one or more of polyacrylate absorbent resin (polyacrylate absorbent resin), starch acrylate polymer (starch graft acrylate polymer), starch-acrylonitrile graft copolymer and acrylamide-acrylonitrile-acrylic acid terpolymer.
In the scheme, the biological leavening agent is a product designed by composite microorganisms, and comprises one or more of 5 beneficial microbial floras of lactic acid bacteria, yeast bacteria, photosynthetic bacteria, bacillus and filamentous fungi.
The sludge curing agent with the pH value of 4-10 can be prepared by weighing the raw materials in proportion and then uniformly dispersing the raw materials in a stirrer.
Preferably, the pH value of the sludge curing agent is 7-10.
The sludge curing agent obtained according to the scheme is applied to cured sludge, and the amount of the sludge curing agent relative to the sludge is 3-7 wt%.
The principle of the invention is as follows:
1) about 80% of the construction waste is brick and tile and concrete structure waste, fine powder is construction waste micro powder after sorting, crushing, screening and separating, wherein the construction waste micro powder contains a large amount of substances such as hydration products such as C-S-H gel and unhydrated cement particles, the substances contain a large amount of porous structures, and the construction waste has certain potential hydration activity and micro-aggregate effect after being dehydrated at the temperature of 500-; after the obtained dehydrated modified construction waste micro powder is reacted with sludge, on one hand, the porous structure can absorb a large amount of water, and the content of free water in the sludge is reduced; on the other hand, in a constructed alkalescent environment, C-S-H dehydration phase produced by dehydration modification is promoted to react with water in the sludge to produce a small amount of calcium hydroxide, and the calcium hydroxide reacts with organic matters such as humic acid in the sludge, so that the liquid-plastic limit of the sludge can be greatly reduced, and the state of the sludge is greatly improved;
2) plant fibers play three main roles: firstly, the plant fiber has a porous structure, so that the plant fiber has strong water absorption capacity, can absorb the water in the sludge and reduce the proportion of the water in the sludge; secondly, the plant fiber can react with a biological leavening agent to generate mineralization, and the mineralized plant fiber can provide nutrition for plant production; finally, the fibrous structure of the plant fiber can prevent the sludge from hardening, has air permeability and is beneficial to providing plant growth conditions;
3) ferrous sulfate; on one hand, the hydrolysis is carried out in an alkaline environment, so that the charge in the sludge can be changed, the iron-containing sol generated by hydrolysis can generate flocculation with substances in the sludge, and sulfate ions can react with active substances in the modified construction waste micro powder to promote the activation of the micro powder; on the other hand, the nano iron generated by hydrolysis can play a role in catalyzing, reducing and the like on heavy metals to promote the heavy metals to be effectively solidified;
4) the activated magnesium oxide can be slowly hydrated in water, so that the sludge is further promoted to form a weak alkali environment, and the use efficiency of ferrous sulfate is improved; in addition, the active magnesium oxide can also react with inorganic matters in the sludge to form a certain hydration micro-area, so that the water and soil loss is prevented;
5) spodumene has the effects of continuously consuming the modified construction waste micro powder and magnesium oxide hydrolysate in a weak alkali environment constructed by modified waste concrete micro powder and magnesium oxide, and the pH of the system is maintained to be stable, so that a weak alkali gradient design system based on active magnesium oxide-modified waste concrete micro powder-lithium slag is constructed, and the use efficiency of high ferrous sulfate is favorably ensured; meanwhile, the concrete has certain consolidation function and can prevent hardening;
6) the super absorbent resin mainly plays a role in hydration, fully utilizes the water absorption effect of the super absorbent resin when being matched with active magnesium oxide for use, and can effectively avoid hardening.
Compared with the prior art, the invention has the beneficial effects that:
1) the waste utilization rate is high, the maximum solid waste mixing amount in the raw materials can reach more than 80%, the solid waste powder porous structure and the straw porous structure are fully utilized, the resource utilization of the solid waste is realized, and the treatment cost of sludge solidification means such as a flocculating agent and filter pressing which are used in the prior art can be greatly reduced;
2) the problem of solidification of harmful impurities in the sludge can be effectively solved, and the high-efficiency solidification of heavy metals is realized by utilizing additives with the functions of reducing and solidifying the heavy metals such as ferrous sulfate and the like and a low-alkalinity environment;
3) the method has strong pertinence, comprehensively considers various conditions such as nutrition, environment and the like of plant growth, and particularly compared with the traditional sludge solidification means using cement, lime and the like, the method makes full use of the modified construction waste micro powder, the active magnesium oxide and the lithium slag step to provide a weak alkaline environment, can avoid the damage of the cement, the lime and the like to the plants and the like from multiple aspects of consideration, and can better meet the ecological planting requirement; meanwhile, the alkalescent environment provided by the sludge curing agent system is combined, so that the sludge curing effect is further improved.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the content of the present invention, but the present invention is not limited to the following examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following examples, the modified waste concrete micro powder is obtained by sorting, crushing and screening construction waste to obtain micro powder with the fineness less than 0.2mm, and then dehydrating for 5-15min at the temperature of 500-800 ℃.
The adopted lithium slag is provided by lithium carbonate processing enterprises, is waste slag discharged after extracting lithium from spodumene, and has the water content of 20 percent and the pH value of 5-7.
The adopted ferrous sulfate is a commercial industrial grade product, and the content of heavy metal in impurities is less than or equal to 0.1 percent.
The adopted biological leaven is a No. 68038-70-0 commercial industrial grade product provided by Shandong Rui biological science and technology Limited company.
The super absorbent resins (H-105 polyacrylate water absorbent resin provided by New composite cereal material science and technology (Shanghai) Co., Ltd., ST-g-PAA starch acrylate polymer and ST-g-PAN starch-acrylonitrile graft copolymer provided by Xian Rexi biological science and technology Co., Ltd.) are all commercial industrial grade products.
The active magnesium oxide is a commercial industrial product, the effective content of the active magnesium oxide is 95 wt%, and the average grain diameter is 1400 nm.
Example 1
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 50% of modified waste concrete micro powder, 5% of lithium slag, 30% of plant fiber, 1% of ferrous sulfate, 10% of active magnesium oxide, 1% of super absorbent resin (polyacrylate) and 3% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 15min at the temperature of 500 ℃; the plant fiber is cotton straw fiber, and is obtained by crushing cotton straw to 2cm in length under the condition that the water content is 30%;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 8.57.
The sludge curing agent is used for solidifying sludge (with the water content of 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 4%, the water content of the sludge obtained after the sludge is added and uniformly mixed is 35%, the sludge is placed at room temperature for 1 day, the unconfined compressive strength is 1.6MPa after the sludge is sealed and maintained for 6 days at the temperature of 25 +/-3 ℃ by using a plastic preservative film, and the plasticity index is 156.32.
Example 2
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 50% of modified waste concrete micro powder, 5% of lithium slag, 25% of plant fiber, 1% of ferrous sulfate, 15% of active magnesium oxide, 1% of super absorbent resin (starch acrylate polymer) and 3% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 15min at the temperature of 500 ℃; the plant fiber is cotton straw fiber, and is obtained by crushing cotton straw to 2cm in length under the condition that the water content is 30%;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 8.65.
The sludge curing agent is used for solidifying sludge (with the water content of 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 3%, the water content of the sludge obtained after the sludge is added and uniformly mixed is 38%, the sludge is placed at room temperature for 1 day, the unconfined compressive strength is 1.4MPa after the sludge is sealed and maintained for 6 days at the temperature of 25 +/-3 ℃ by using a plastic preservative film, and the plasticity index is 161.74.
Example 3
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 50% of modified waste concrete micro powder, 10% of lithium slag, 15% of plant fiber, 2% of ferrous sulfate, 10% of active magnesium oxide, 3% of super absorbent resin (starch-acrylonitrile graft copolymer) and 10% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 8min at the temperature of 800 ℃; the plant fiber is peanut straw fiber, and is obtained by crushing peanut straws to the length of 2cm under the condition that the water content is 30%; the active magnesium oxide is a commercial industrial grade product, and the effective content is 95 wt%, and the average grain diameter is 1400 nm;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 7.92.
The sludge curing agent is used for solidifying sludge (with the water content of 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 5%, the water content of the sludge obtained after the sludge is added and uniformly mixed is 34%, the sludge is placed at room temperature for 1 day, the unconfined compressive strength is 1.7MPa after the sludge is sealed and maintained for 6 days at the temperature of 25 +/-3 ℃ by using a plastic preservative film, and the plasticity index is 151.83.
Example 4
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 70% of modified waste concrete micro powder, 5% of lithium slag, 10% of plant fiber, 1% of ferrous sulfate, 10% of active magnesium oxide, 1% of super absorbent resin (the mass ratio of polyacrylate to starch acrylate polymer is 1:1) and 3% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 5min at the temperature of 800 ℃; the water content of the lithium slag is 25%; the plant fiber is corn straw fiber, and is obtained by crushing corn straws to 2cm in length under the condition that the water content is 30%;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 9.13.
The sludge curing agent is used for solidifying sludge (with the water content of 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 6%, the water content of the sludge obtained after the sludge is added and uniformly mixed is 36%, the sludge is placed at room temperature for 1 day, the unconfined compressive strength is 1.1MPa after the sludge is sealed and maintained for 6 days by using a plastic preservative film at the temperature of 25 +/-3 ℃, and the plasticity index is 184.17.
Example 5
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 50% of modified waste concrete micro powder, 5% of lithium slag, 35% of plant fiber, 1% of ferrous sulfate, 5% of active magnesium oxide, 1% of super absorbent resin (a mixture of polyacrylate and starch acrylate polymer in a mass ratio of 3: 2) and 3% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 8min at the temperature of 800 ℃; the water content of the lithium slag is 25%; the plant fiber is corn straw fiber and cotton straw fiber, and is obtained by mixing corn straw and cotton straw according to the mass ratio of 1:1 and crushing the mixture until the length is 2cm under the condition that the water content is 30%;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 7.34.
The sludge curing agent is used for solidifying sludge (with the water content of 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 6%, the water content obtained after the sludge is added and uniformly mixed is 32%, the sludge is placed at room temperature for 1 day, then the unconfined compressive strength is 1.8MPa and the plasticity index is 145.63 after the sludge is sealed and maintained for 6 days by using a plastic preservative film at the temperature of 25 +/-3 ℃.
Example 6
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 56% of modified waste concrete micro-powder, 5% of lithium slag, 15% of plant fiber, 4% of ferrous sulfate, 5% of active magnesium oxide, 5% of super absorbent resin and 10% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 8min at the temperature of 800 ℃; the water content of the lithium slag is 25%; the plant fiber is corn straw fiber and cotton straw fiber, and is obtained by mixing corn straw and cotton straw according to the mass ratio of 1:1 and crushing the mixture until the length is 2cm under the condition that the water content is 30%; the super absorbent resin is a mixture prepared from polyacrylate, a starch acrylate polymer and a starch-acrylonitrile graft copolymer according to the mass ratio of 1:1: 1;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 7.21.
The sludge curing agent is used for solidifying sludge (with the water content of 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 7%, the water content of the sludge obtained after the sludge is added and uniformly mixed is 31%, the sludge is placed at room temperature for 1 day, the unconfined compressive strength is 2.0MPa after the sludge is sealed and maintained for 6 days at the temperature of 25 +/-3 ℃ by using a plastic preservative film, and the plasticity index is 138.97.
Comparative example 1
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 85% of modified waste concrete micro powder, 10% of plant fiber, 1% of ferrous sulfate, 1% of super absorbent resin (the mass ratio of polyacrylate to starch acrylate polymer is 1:1) and 3% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 5min at the temperature of 800 ℃; the water content of the lithium slag is 25%; the plant fiber is corn straw fiber, and is obtained by crushing corn straws to 2cm in length under the condition that the water content is 30%;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 10.07.
The sludge curing agent obtained in the comparative example is used for solidifying sludge (the water content is 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 6%, the water content of the sludge obtained after the sludge is added and uniformly mixed is 40%, and the plasticity index is 281.80.
Compared with the curing means described in the embodiment 4, the modified waste concrete micro powder provided by the invention is simply adopted to cure the sludge, the problems of poor curing effect and the like still exist, the use efficiency of ferrous sulfate cannot be ensured particularly, and the effect of improving the liquid plasticity limit of the sludge is not obvious.
Comparative example 2
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 50% of modified waste concrete micro powder, 21% of lithium slag, 15% of plant fiber, 4% of ferrous sulfate and 10% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 8min at the temperature of 800 ℃; the water content of the lithium slag is 25%; the plant fiber is corn straw fiber and cotton straw fiber, and is obtained by mixing corn straw and cotton straw according to the mass ratio of 1:1 and crushing the mixture until the length is 2cm under the condition that the water content is 30%; the super absorbent resin is a mixture prepared from polyacrylate, a starch acrylate polymer and a starch-acrylonitrile graft copolymer according to the mass ratio of 1:1: 1;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 6.23.
The sludge curing agent obtained in the comparative example is used for solidifying sludge (the water content is 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 7%, the water content obtained after the sludge is added and uniformly mixed is higher than 40%, and the plasticity index is 313.53.
Compared with the curing means described in embodiment 6, the use amount of weakly acidic lithium slag is increased, the weakly alkaline environment cannot be provided, and the ferrous sulfate hydrolysis of the obtained curing agent is obviously weakened, so that the use efficiency is reduced and the curing effect is poor.
Comparative example 3
A sludge curing agent for ecological planting is prepared by the following steps:
1) weighing the raw materials according to the mixture ratio, wherein the raw materials and the mass percentage of the raw materials comprise: 46% of modified waste concrete micro powder, 20% of calcium oxide, 15% of plant fiber, 4% of ferrous sulfate, 5% of super absorbent resin and 10% of biological leavening agent; wherein the modified construction waste micro powder is obtained by dehydrating for 8min at the temperature of 800 ℃; the plant fiber is corn straw fiber and cotton straw fiber, and is obtained by mixing corn straw and cotton straw according to the mass ratio of 1:1 and crushing the mixture until the length is 2cm under the condition that the water content is 30%; the super absorbent resin is a mixture prepared from polyacrylate, a starch acrylate polymer and a starch-acrylonitrile graft copolymer according to the mass ratio of 1:1: 1;
2) and (3) uniformly dispersing the weighed raw materials in a stirrer to obtain the sludge curing agent, wherein the pH value of the sludge curing agent is 10.38.
The sludge curing agent obtained in the comparative example is used for solidifying sludge (the water content is 60-70%) taken from south Wuhan lake, the mass percentage of the sludge is 7%, the water content obtained after the sludge is added and uniformly mixed is higher than 40%, and the plasticity index is 383.45.
The result shows that the calcium oxide component directly participates in hydration under a higher alkaline condition by adopting the traditional sludge curing agent formula system based on calcium oxide, so that the sludge curing effect and the plant ecological planting effect are influenced.
It is apparent that the above embodiments are only examples for clearly illustrating and do not limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are therefore intended to be included within the scope of the invention as claimed.
Claims (9)
1. A silt curing agent for ecological planting is characterized by comprising the following components in percentage by mass: 50-70% of modified waste concrete micro powder, 5-10% of lithium slag, 10-35% of plant fiber, 1-4% of ferrous sulfate, 5-20% of active magnesium oxide, 1-5% of super absorbent resin and 3-10% of biological leavening agent; the modified waste concrete micro powder is prepared by utilizing construction waste to carry out sorting, crushing, screening and dehydration treatment.
2. The sludge curing agent as claimed in claim 1, wherein the fineness of the modified waste concrete micro powder is less than 0.2mm, the dehydration temperature is 500-800 ℃, and the time is 5-15 min.
3. The sludge curing agent as claimed in claim 1, wherein the lithium slag is a waste slag discharged from spodumene after extracting lithium, and has a pH value of 5-7 and a water content of 30% or less.
4. The sludge curing agent as claimed in claim 1, wherein the plant fiber is one or more of corn stalk fiber, cotton stalk fiber and peanut stalk fiber; the water content is less than or equal to 30 percent, and the length is less than 2 cm.
5. The sludge curing agent according to claim 1, wherein the active magnesium oxide has an effective content of 90 wt% or more and an average particle size of <1500 nm.
6. The sludge curing agent as claimed in claim 1, wherein the super absorbent resin is one or more of polyacrylate water absorbent resin, starch acrylate polymer, starch-acrylonitrile graft copolymer and acrylamide-acrylonitrile-acrylic acid terpolymer.
7. The sludge curing agent according to claim 1, wherein the sludge curing agent is prepared by weighing raw materials in proportion, stirring and mixing uniformly, and the pH value of the sludge curing agent is 4-10.
8. The sludge curing agent of claim 1, wherein the sludge curing agent cures sludge in an amount of 3 to 7%.
9. The method for preparing a sludge curing agent for ecological planting according to any one of claims 1 to 8, comprising the steps of:
1) weighing the raw materials according to the proportion, wherein the raw materials and the mass percentage of the raw materials comprise: 50-70% of modified waste concrete micro powder, 5-10% of lithium slag, 10-35% of plant fiber, 1-4% of ferrous sulfate, 5-20% of active magnesium oxide, 1-5% of super absorbent resin and 3-10% of biological leavening agent;
2) and uniformly mixing the weighed raw materials to obtain the sludge curing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110574416.4A CN113277815A (en) | 2021-05-25 | 2021-05-25 | Sludge curing agent for ecological planting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110574416.4A CN113277815A (en) | 2021-05-25 | 2021-05-25 | Sludge curing agent for ecological planting and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113277815A true CN113277815A (en) | 2021-08-20 |
Family
ID=77281561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110574416.4A Pending CN113277815A (en) | 2021-05-25 | 2021-05-25 | Sludge curing agent for ecological planting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113277815A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979676A (en) * | 2021-10-26 | 2022-01-28 | 上海市城市建设设计研究总院（集团）有限公司 | Bank protection material for supplying nutrients by plant fiber humification and preparation method thereof |
| CN114409224A (en) * | 2022-02-23 | 2022-04-29 | 上海市政工程设计研究总院（集团）有限公司 | Conditioning modifier for sludge of water supply plant, sludge material, preparation method and application thereof |
| CN114538721A (en) * | 2022-01-19 | 2022-05-27 | 明阳(宁波)环保科技有限公司 | Curing agent for printing and dyeing sludge and printing and dyeing sludge curing device |
| CN116496043A (en) * | 2023-04-22 | 2023-07-28 | 崇德建材集团有限公司 | Recycled concrete resistant to hydration heat cracking |
| CN117510006A (en) * | 2023-12-20 | 2024-02-06 | 四川君和环保股份有限公司 | Oily sludge curing agent and application thereof in curing oily sludge |
| CN117502178A (en) * | 2023-12-01 | 2024-02-06 | 云南磷化集团有限公司 | An artificial cultivation substrate based on metallurgical lithium slag and its preparation method and application |
| CN117776638A (en) * | 2024-02-23 | 2024-03-29 | 大连文昇环保科技有限公司 | Silt curing agent with high mixing amount of solid waste |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613351A (en) * | 2013-12-16 | 2014-03-05 | 北京航空航天大学 | Preparation method of solidified salinized soil |
| CN104086216A (en) * | 2014-07-22 | 2014-10-08 | 武汉理工大学 | Biologic filling material utilizing multi-element solid wastes and preparation and application method thereof |
| CN105819758A (en) * | 2016-03-10 | 2016-08-03 | 盐城工学院 | Ecologic solidified fluid mud and production method thereof |
| CN107667821A (en) * | 2017-10-20 | 2018-02-09 | 刘青亚 | A kind of production method of the ornamental plant cultivation matrix of construction waste soil matrix |
| CN110918626A (en) * | 2017-10-19 | 2020-03-27 | 杨清辉 | Soil passivation and solidification method in road and bridge engineering |
| CN111410389A (en) * | 2020-04-17 | 2020-07-14 | 海南河道综合整治工程有限公司 | Sludge composite curing agent for dredging engineering and preparation method thereof |
| CN111718160A (en) * | 2020-07-03 | 2020-09-29 | 绍兴文理学院 | A kind of alkali-excited regeneration micropowder to solidify dewatered sludge/slurry and preparation method thereof |
-
2021
- 2021-05-25 CN CN202110574416.4A patent/CN113277815A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103613351A (en) * | 2013-12-16 | 2014-03-05 | 北京航空航天大学 | Preparation method of solidified salinized soil |
| CN104086216A (en) * | 2014-07-22 | 2014-10-08 | 武汉理工大学 | Biologic filling material utilizing multi-element solid wastes and preparation and application method thereof |
| CN105819758A (en) * | 2016-03-10 | 2016-08-03 | 盐城工学院 | Ecologic solidified fluid mud and production method thereof |
| CN110918626A (en) * | 2017-10-19 | 2020-03-27 | 杨清辉 | Soil passivation and solidification method in road and bridge engineering |
| CN107667821A (en) * | 2017-10-20 | 2018-02-09 | 刘青亚 | A kind of production method of the ornamental plant cultivation matrix of construction waste soil matrix |
| CN111410389A (en) * | 2020-04-17 | 2020-07-14 | 海南河道综合整治工程有限公司 | Sludge composite curing agent for dredging engineering and preparation method thereof |
| CN111718160A (en) * | 2020-07-03 | 2020-09-29 | 绍兴文理学院 | A kind of alkali-excited regeneration micropowder to solidify dewatered sludge/slurry and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 竹涛等: "《矿山固体废物处理与处置工程》", 30 June 2016, 冶金工业出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979676A (en) * | 2021-10-26 | 2022-01-28 | 上海市城市建设设计研究总院（集团）有限公司 | Bank protection material for supplying nutrients by plant fiber humification and preparation method thereof |
| CN114538721A (en) * | 2022-01-19 | 2022-05-27 | 明阳(宁波)环保科技有限公司 | Curing agent for printing and dyeing sludge and printing and dyeing sludge curing device |
| CN114409224A (en) * | 2022-02-23 | 2022-04-29 | 上海市政工程设计研究总院（集团）有限公司 | Conditioning modifier for sludge of water supply plant, sludge material, preparation method and application thereof |
| CN114409224B (en) * | 2022-02-23 | 2024-05-17 | 上海市政工程设计研究总院（集团）有限公司 | Tempering modifier for water supply plant sludge, sludge material, preparation method and application thereof |
| CN116496043A (en) * | 2023-04-22 | 2023-07-28 | 崇德建材集团有限公司 | Recycled concrete resistant to hydration heat cracking |
| CN117502178A (en) * | 2023-12-01 | 2024-02-06 | 云南磷化集团有限公司 | An artificial cultivation substrate based on metallurgical lithium slag and its preparation method and application |
| CN117510006A (en) * | 2023-12-20 | 2024-02-06 | 四川君和环保股份有限公司 | Oily sludge curing agent and application thereof in curing oily sludge |
| CN117510006B (en) * | 2023-12-20 | 2024-08-09 | 四川君和环保股份有限公司 | Oily sludge curing agent and application thereof in curing oily sludge |
| CN117776638A (en) * | 2024-02-23 | 2024-03-29 | 大连文昇环保科技有限公司 | Silt curing agent with high mixing amount of solid waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113277815A (en) | Sludge curing agent for ecological planting and preparation method thereof | |
| CN103449796A (en) | Sludge autoclaved brick and preparation method thereof | |
| CN112142393B (en) | A kind of recycled lightweight aggregate permeable concrete and preparation method thereof | |
| CN106967435A (en) | A kind of preparation method of multifunction soil improver | |
| AU2021100339A4 (en) | A Method For Preparing Organic-Inorganic Compound Fertilizer By Utilizing Kitchen Waste | |
| CN111406546A (en) | A kind of ecological slope protection prefabricated block and its preparation method and application | |
| CN112337033A (en) | Harmless treatment method of abamectin slag, product and application of product as sandy soil modifier | |
| CN112374711A (en) | Sludge curing agent based on industrial waste residues and application method thereof | |
| CN112174625B (en) | Environment-friendly dredged sludge modifier and preparation method thereof | |
| CN111875409A (en) | Sludge hydrothermal carbon ceramsite and preparation method and application thereof | |
| CN106277703A (en) | Sludge treatment method under combined action of physical fiber reinforcement and chemical solidification | |
| CN103435986B (en) | A method of using excess activated sludge to prepare degradable mulch film and the mulch film | |
| CN101891367B (en) | A solidification and stabilization method for municipal sludge | |
| CN111500292B (en) | Composite type soil material and application thereof in preparing greening planting soil from river and lake dredging mud | |
| CN106277858A (en) | Lake, river is gushed polluted bed mud and is processed and receive a micron modified adhesive gel material | |
| CN103359907A (en) | Novel environment friendly conditioner for deep dehydration of sludge | |
| CN112167005A (en) | Preparation method of silt-based artificial soil particles | |
| CN109650808B (en) | Composite curing agent based on biomass and sludge mixed burning ash and application thereof | |
| CN103722001B (en) | One way of life garbage as resource Application way | |
| CN111499155B (en) | Anti-freezing sludge deep dehydration conditioner and preparation and application methods thereof | |
| CN112456952A (en) | Raw soil building material based on waste pit mud and preparation method and application thereof | |
| CN105731746A (en) | Method for curing sludge for roadbed filling | |
| CN111204939A (en) | A kind of microbial and ecological fiber composite solidified sludge additive capsule and its preparation method and application | |
| CN110342764A (en) | The agent of organic sludge rapid-digestion and processing method based on microorganism predation technology | |
| CN119461656B (en) | A manganese-carbon composite controlled-release material and its preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210820 |
|
| RJ01 | Rejection of invention patent application after publication |