CN101475332B - Preparation and use of sludge-stalk fibrous composite - Google Patents
Preparation and use of sludge-stalk fibrous composite Download PDFInfo
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- CN101475332B CN101475332B CN2009100605639A CN200910060563A CN101475332B CN 101475332 B CN101475332 B CN 101475332B CN 2009100605639 A CN2009100605639 A CN 2009100605639A CN 200910060563 A CN200910060563 A CN 200910060563A CN 101475332 B CN101475332 B CN 101475332B
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- 239000002131 composite material Substances 0.000 title claims description 20
- 238000002360 preparation method Methods 0.000 title claims description 10
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 229920000642 polymer Polymers 0.000 claims abstract description 39
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000693 micelle Substances 0.000 claims abstract description 8
- 230000004048 modification Effects 0.000 claims abstract description 7
- 238000012986 modification Methods 0.000 claims abstract description 7
- 239000002440 industrial waste Substances 0.000 claims abstract description 3
- 239000010902 straw Substances 0.000 claims abstract 9
- 229920002401 polyacrylamide Polymers 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims 1
- 229920002959 polymer blend Polymers 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 26
- 239000011435 rock Substances 0.000 abstract description 11
- 244000025254 Cannabis sativa Species 0.000 abstract description 9
- 239000004927 clay Substances 0.000 abstract description 5
- 238000006477 desulfuration reaction Methods 0.000 abstract description 5
- 230000023556 desulfurization Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000003337 fertilizer Substances 0.000 abstract description 5
- 239000000758 substrate Substances 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000010801 sewage sludge Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 244000052363 Cynodon dactylon Species 0.000 description 8
- 241000234643 Festuca arundinacea Species 0.000 description 8
- 239000004567 concrete Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000004746 geotextile Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000008635 plant growth Effects 0.000 description 4
- 239000011378 shotcrete Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000012010 growth Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000003469 silicate cement Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
本发明以市政污泥、秸秆纤维和工业废渣(脱硫灰渣、钢渣)为原料，采用污泥改性技术和混聚物均匀搅拌技术，制备污泥-纤维胶团混聚物，用于岩石边坡、粘土边坡以及垃圾填埋场边坡的生态防护和修复。利用该技术制备的污泥-纤维胶团混聚物，使得难于处理的污泥和秸秆纤维得到资源化利用，比起各种绿化基材，不需要给土壤添加氮磷钾和有机肥，不仅使废物再利用，而且大大地减少成本。秸秆纤维提高污泥-纤维混聚物的抗拉和抗折力学性能，进而达到护坡的力学强度指标。在混聚物中混入草种，利用植被的水文效应和植被根系的力学加固效应，不仅使得水分进行有效循环，更能起到加固边坡和绿化环境的作用。The invention uses municipal sludge, straw fiber and industrial waste residue (desulfurization ash, steel slag) as raw materials, and adopts sludge modification technology and mixture uniform mixing technology to prepare sludge-fiber micelle mixture, which is used for rock Ecological protection and restoration of slopes, clay slopes and landfill slopes. The sludge-fiber micelle mixture prepared by this technology enables the recycling of sludge and straw fibers that are difficult to handle. Compared with various greening substrates, it does not need to add nitrogen, phosphorus, potassium and organic fertilizers to the soil, not only Make waste reuse, and greatly reduce costs. Straw fiber improves the tensile and flexural mechanical properties of sludge-fiber mixture, and then reaches the mechanical strength index of slope protection. Mixing grass seeds into the polymer, using the hydrological effect of vegetation and the mechanical reinforcement effect of vegetation root system, not only makes the water circulate effectively, but also plays a role in strengthening the slope and greening environment.
Description
Technical field
The method that mud-stalk fibrous composite of the present invention is used for ecological revetment generally is applicable to the ecological protection and the reparation of rock slope, clay side slope, refuse landfill side slope, belongs to ecotope, geotechnical engineering, agriculture field.
Background technology
Along with the raising of quickening of municipal sewage treatment Facilities Construction paces and sewage centralized treatment rate, the sludge of sewage treatment plants generation increases fast.According to national Eleventh Five-Year Plan, China will increase 4,500 ten thousand tons of day sewage treatment capacity newly, the centralized treatment of urban sewage rate reaches 70%, and China's mud generation also will sharply increase, and it is one of current environmental problem of needing solution badly of China that the safe handling of mud is disposed.How municipal sludge is carried out harmless treatment, application technology as the second resource, this is the problem that countries in the world government pays much attention to.
China is large agricultural country, can produce more than 700,000,000 ton of stalk every year, in recent years, along with the variation of China's life in the countryside energy structure and the development of intensification production, stalk progressively develops into a kind of useless burden thing from traditional agricultural raw material, is excluded from outside the internal recycling of agriculture production.China's industrial residue comprehensive utilization ratio is if improve 1 percentage point, and just can reduce about 1,000 ten thousand tons of discharging wastes every year, and environmental quality will greatly be improved.How efficiently the using of stalk resource and industrial waste resource, having implements a scientific outlook on development has the important strategic meaning.
At present, ecological bank protecting method mainly by required organic matter, soil ulmin, nitrogen phosphorus potassium, moisture and the pH value conditioning agent of preparation vegetation growth, is added soil and matrix material silicate cement.Silicate cement makes soil become acid, is unfavorable for the growth of vegetation, and adds the required organic matter of vegetation growth, soil ulmin, nitrogen phosphorus potassium increase ecological revetment expense, and it is ripe to it seems that totally is that all right, and progress is slow, and the cost height is difficult to adapt to large-scale production.
Summary of the invention
At the problem of above-mentioned existence, the object of the invention is to provide a kind of preparation of mud-stalk fibrous composite and the application of matrix material.
Mud-stalk fibrous composite preparation method, the preparation method comprises,
1. sludge modification is got water ratio and is 85% municipal sludge, mixes by the municipal sludge mass ratio to be 12%～15% industrial residue and to be 0.8%～1% polyacrylamide by the municipal sludge mass ratio, with its even stirring, forms modified sewage sludge,
2. modified sewage sludge and stalk fibre are pressed mass ratio and 100: 2～4 mix, and mix sodium-polyacrylate-polyacrylamide interpolymer with 0.5%～1% ratio that modified sewage sludge and stalk fibre mix the back total mass and form mud-stalk fibre mixture, wherein,
Stalk fibre length is≤15mm,
3. mud-stalk fibre mixture is put into stirrer and evenly stirred 30min～45min, form mud-fiber micelle and mix polymers (mud-stalk fibrous composite), wherein,
Mixing the polymers water ratio is 40%, and mixing polymers density is 1.5～2.0g/cm
3, mixing polymers pH value is 7.
Mud-stalk fibrous composite is applied to rock slope, clay side slope, refuse landfill side slope etc.Concrete application method step is as follows:
1. cleaning, smooth side slope surface are laid three-dimensional earthwork and firm anchor pole on domatic,
2. mud-cellulosic polymer and local soil 4～6: 1 (mass ratio) are stirred, and be ejected into domatic on, jet thickness 5～6cm forms basic unit,
3. mud-cellulosic polymer and local soil 4～6: 1 (mass ratio) are stirred, add by the long-pending 10g/m of substrate surface
2Grass seeds, and be ejected in the basic unit, jet thickness 2～3cm forms the middle layer,
4. mud-cellulosic polymer and local soil 4～6: 1 (mass ratio) are stirred, add by the long-pending 20g/m of substrate surface
2Grass seeds, and be ejected on the middle layer, jet thickness 1～2cm forms the top layer,
5. covering curing layer on the top layer.
Owing to adopt above technical scheme the present invention to have following advantage:
(1) the mixed polymers of the mud-fiber of the present invention's employing and soil, rock all have cohesiveness preferably, have therefore guaranteed permanence, the stability of domatic functions of use.
(2) raw sludge and the stalk fibre of the present invention's employing, come source range wide, be easy to suitability for industrialized production, realized the recycling of refuse, in modified sewage sludge, add tension, fracture resistence force performance and transparent performance that stalk fibre improves mud-stalk fibrous composite, simultaneously, industrial residue (desulfurization ash, slag) source is abundant, have solidify strong, intensity is high, corrosion-resistant and advantage such as impermeability, the treatment of wastes with processes of wastes against one another realizes energy-saving and emission-reduction and utilization of resources industrialization.
(3) mud of the present invention-stalk fibrous composite constructional method is simple, can operate strong, progress is fast, adding grass seeds in the mixed polymers of mud-fiber acts on the side slope, grass seeds surviving rate height, utilize the hydrologic effect of vegetation and the mechanics of vegetation root system to reinforce effect, make that not only moisture effectively circulates, more can play the effect of reinforcing side slope and greening environment.
Embodiment
Mud-stalk fibrous composite preparation method, the preparation method comprises,
1. sludge modification, get water ratio and be 85% municipal sludge, mix by the municipal sludge mass ratio and be 12%～15% industrial residue (desulfurization ash, slag) and be 0.8%～1% polyacrylamide by the municipal sludge mass ratio, it is evenly stirred 30min～45min (rotating speed is 17r/min), form modified sewage sludge;
2. modified sewage sludge and stalk fibre are pressed mass ratio and 100: 2～4 mix, the fiber that stalk fibre is produced by Wuhan Inst. of Rock and Soil Mechanics, Chinese Academy of Sciences, and mix sodium-polyacrylate-polyacrylamide interpolymer with 0.5%～1% ratio that modified sewage sludge and stalk fibre mix the back total mass and form mud-stalk fibre mixture, wherein, stalk fibre length is≤15mm;
3. mud-stalk fibre mixture is put into stirrer and evenly stirred 30min～45min (rotating speed is 17r/min), form mud-fiber micelle and mix polymers (mud-stalk fibrous composite), wherein,
Mixing the polymers water ratio is 40%, and mixing polymers density is 1.5～2.0g/cm
3, mixing polymers pH value is 7.
Mud-stalk fibrous composite is applied to rock slope, clay side slope, refuse landfill side slope etc.Concrete application method step is as follows:
1. clear up domatic, remove or reinforce loosening soil or rock, smooth domatic, re-use the corresponding boring in blower fan cave, insert anchor pole that (length is 30～60cm) and pours into firm anchor pole with sand-cement slurry, on anchor pole, put on a suit of armour two distortion three-dimensional earthwork again, and reinforce anchor pole and three-dimensional earthwork with crab-bolt;
2. mud-cellulosic polymer and local soil 4～6: 1 (mass ratio) are stirred, and be ejected into domatic on, jet thickness 5～6cm forms basic unit, sprayed construction equipment adopts 15m
3Air compressor machine, 5m
3/ h rotor-type shotcrete machine, carrier pipe length 20m, diameter 80mm;
3. mud-cellulosic polymer and local soil 4～6: 1 (mass ratio) are stirred, add by the long-pending 10g/m of substrate surface
2Grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected in the basic unit, jet thickness 2～3cm forms the middle layer, and splashing device is the same;
4. mud-cellulosic polymer and local soil 4～6: 1 (mass ratio) are stirred, add by the long-pending 20g/m of substrate surface
2Grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected on the middle layer, jet thickness 1～2cm forms the top layer, and splashing device is the same;
5. cover non-woven geotextile, maintenance (curing time is month) in early stage is sooner or later respectively sprayed spray water xi one time, meets drought period to water, and looks the plant-growth situation and can correspondence apply fertilizer after half a year.
Specific embodiment 1
1. sludge modification is got water ratio and is 85% municipal sludge 1000kg, mixes 120kg desulfurization ash and 10kg polyacrylamide, and it is evenly stirred 30min～45min (rotating speed is 17r/min), forms modified sewage sludge;
2. 1130kg modified sewage sludge and 45.2kg stalk fibre are mixed, and mix 5.876kg sodium-polyacrylate-polyacrylamide interpolymer, form mud-stalk fibre mixture, wherein,
Stalk fibre length is 6mm;
3. mud-stalk fibre mixture is put into stirrer and evenly stirred 30min～45min (rotating speed is 17r/min), form mud-fiber micelle and mix polymers (mud-stalk fibrous composite), wherein, mixing the polymers water ratio is 40%, and mixing polymers density is 1.63g/cm
3, mixing polymers pH value is 7.
Mud-stalk fibrous composite is applied to rock slope.
Concrete application method step is as follows:
1. clear up domatic, remove or reinforce loosening soil or rock, smooth domatic, re-use the corresponding boring in blower fan cave, insert anchor pole that (length is 30～60cm) and pours into firm anchor pole with sand-cement slurry, on anchor pole, put on a suit of armour two distortion three-dimensional earthwork again, and reinforce anchor pole and three-dimensional earthwork with crab-bolt;
2. get the local soil of 708.66kg mud-cellulosic polymer and 177.15kg and stir, recording density is 1.82g/cm
3, and be ejected into domatic on, jet thickness 6cm forms basic unit, sprayed construction equipment adopts 15m
3Air compressor machine, 5m
3/ h rotor-type shotcrete machine, carrier pipe length 20m, diameter 80mm;
3. get the local soil of 236.22kg mud-cellulosic polymer and 59.05kg and stir, add 81.12g grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected in the basic unit, jet thickness 2cm forms the middle layer, and splashing device is the same;
4. get the local soil of 236.22kg mud-cellulosic polymer and 59.05kg and stir, add 162.24g grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected on the middle layer, jet thickness 2cm forms the top layer, and splashing device is the same;
5. cover non-woven geotextile, maintenance (curing time is month) in early stage is sooner or later respectively sprayed spray water xi one time, meets drought period to water, and looks the plant-growth situation and can correspondence apply fertilizer after half a year.
Specific embodiment 2
1. sludge modification is got water ratio and is 85% municipal sludge 1000kg, mixes 135kg slag and 9kg polyacrylamide, and it is evenly stirred 30min～45min (rotating speed is 17r/min), forms modified sewage sludge;
2. 1144kg modified sewage sludge and 34.32kg stalk fibre are mixed, and mix 8.84kg sodium-polyacrylate-polyacrylamide interpolymer formation mud-stalk fibre mixture, wherein,
Stalk fibre length is 9mm;
3. mud-stalk fibre mixture is put into stirrer and evenly stirred 30min～45min (rotating speed is 17r/min), form mud-fiber micelle and mix polymers (mud-stalk fibrous composite), wherein,
Mixing the polymers water ratio is 40%, and mixing polymers density is 1.625g/cm
3, mixing polymers pH value is 7.
Mud-stalk fibrous composite is applied to the clay side slope.
Concrete application method step is as follows:
1. clear up domatic, remove or reinforce loosening soil or rock, smooth domatic, re-use the corresponding boring in blower fan cave, insert anchor pole that (length is 30～60cm) and pours into firm anchor pole with sand-cement slurry, on anchor pole, put on a suit of armour two distortion three-dimensional earthwork again, and reinforce anchor pole and three-dimensional earthwork with crab-bolt;
2. get the local soil of 712.31kg mud-cellulosic polymer and 142.46kg and stir, recording density is 1.8g/cm
3, and be ejected into domatic on, jet thickness 6cm forms basic unit, sprayed construction equipment adopts 15m
3Air compressor machine, 5m
3/ h rotor-type shotcrete machine, carrier pipe length 20m, diameter 80mm;
3. get the local soil of 237.43kg mud-cellulosic polymer and 47.48kg and stir, add 79.15g grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected in the basic unit, jet thickness 2cm forms the middle layer, and splashing device is the same;
4. get the local soil of 237.43kg mud-cellulosic polymer and 47.48kg and stir, add 158.29g grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected on the middle layer, jet thickness 2cm forms the top layer, and splashing device is the same;
5. cover non-woven geotextile, maintenance (curing time is month) in early stage is sooner or later respectively sprayed spray water xi one time, meets drought period to water, and looks the plant-growth situation and can correspondence apply fertilizer after half a year.
Specific embodiment 3
1. sludge modification is got water ratio and is 85% municipal sludge 1000kg, mixes 150kg desulfurization ash and 8kg polyacrylamide, and it is evenly stirred 30min～45min (rotating speed is 17r/min), forms modified sewage sludge;
2. 1158kg modified sewage sludge and 23.16kg stalk fibre are mixed, and mix 11.81kg sodium-polyacrylate-polyacrylamide interpolymer formation mud-stalk fibre mixture, wherein,
Stalk fibre length is 15mm;
3. mud-stalk fibre mixture is put into stirrer and evenly stirred 30min～45min (rotating speed is 17r/min), form mud-fiber micelle and mix polymers (mud-stalk fibrous composite), wherein,
Mixing the polymers water ratio is 40%, and mixing polymers density is 1.62g/cm
3, mixing polymers pH value is 7.
Mud-stalk fibrous composite is applied to the refuse landfill side slope.
Concrete application method step is as follows:
1. clear up domatic, remove or reinforce loosening soil or rock, smooth domatic, re-use the corresponding boring in blower fan cave, insert anchor pole that (length is 30～60cm) and pours into firm anchor pole with sand-cement slurry, on anchor pole, put on a suit of armour two distortion three-dimensional earthwork again, and reinforce anchor pole and three-dimensional earthwork with crab-bolt;
2. get the local soil of 715.77kg mud-cellulosic polymer and 119.3kg and stir, recording density is 1.795g/cm
3, and be ejected into domatic on, jet thickness 6cm forms basic unit, sprayed construction equipment adopts 15m
3Air compressor machine, 5m
3/ h rotor-type shotcrete machine, carrier pipe length 20m, diameter 80mm;
3. get the local soil of 238.59kg mud-cellulosic polymer and 39.77kg and stir, add 77.54g grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected in the basic unit, jet thickness 2cm forms the middle layer, and splashing device is the same;
4. get the local soil of 238.59kg mud-cellulosic polymer and 39.77kg and stir, add 155.07g grass seeds (Bermuda grass, Festuca Arundinacea and Caulis Miscanthis floriduli, mass ratio 1: 1: 1), and be ejected on the middle layer, jet thickness 2cm forms the top layer, and splashing device is the same;
5. cover non-woven geotextile, maintenance (curing time is month) in early stage is sooner or later respectively sprayed spray water xi one time, meets drought period to water, and looks the plant-growth situation and can correspondence apply fertilizer after half a year.
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| CN101475332B true CN101475332B (en) | 2011-07-20 |
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| CN102432354B (en) * | 2011-09-27 | 2014-08-20 | 山东博洋环境资源有限公司 | Organic fertilizer produced from urban domestic sludge by hot air sterilization and production method thereof |
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| CN106171383A (en) * | 2016-07-01 | 2016-12-07 | 宁波华翔自然纤维科技有限公司 | A kind of natural plant fiber grass felt and its preparation method and application |
| CN107913889A (en) * | 2017-11-20 | 2018-04-17 | 贵州欧瑞欣合环保股份有限公司 | A kind of covering material for rubbish and preparation method thereof |
| CN112301952B (en) * | 2018-06-08 | 2022-04-19 | 堡森(上海)新材料科技有限公司 | Preparation method of ecological revetment based on dredged mud in-situ solidification |
| CN109704887A (en) * | 2019-03-13 | 2019-05-03 | 郑水芝 | A kind of preparation method of recycling sludge production organic fertilizer |
| CN109867450B (en) * | 2019-03-30 | 2022-04-22 | 肇庆市珈旺环境技术研究院 | A kind of sludge incineration ash cement and its preparation and application |
| CN110218038A (en) * | 2019-07-15 | 2019-09-10 | 武汉轻工大学 | A kind of preparation method of landfill yard bottom cushion material |
| CN111207970B (en) * | 2019-10-21 | 2022-11-08 | 江西理工大学 | A method of using rice straw to improve the tensile strength of full tailings cemented backfill |
| CN115818922A (en) * | 2022-09-15 | 2023-03-21 | 武汉钢铁有限公司 | A co-processing method of baking soda desulfurization ash and wastewater sludge |
| CN115849950B (en) * | 2022-12-14 | 2024-02-27 | 九江文阳科技有限公司 | Lightweight aggregate, preparation process and application thereof |
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| CN1358419A (en) * | 2002-01-25 | 2002-07-17 | 刘俊岭 | Microporous planting material and making method thereof |
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