CN107162382A - A kind of mud dewatering method - Google Patents
A kind of mud dewatering method Download PDFInfo
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- CN107162382A CN107162382A CN201610128211.2A CN201610128211A CN107162382A CN 107162382 A CN107162382 A CN 107162382A CN 201610128211 A CN201610128211 A CN 201610128211A CN 107162382 A CN107162382 A CN 107162382A
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- sludge
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- uniform velocity
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010802 sludge Substances 0.000 claims abstract description 108
- 238000003756 stirring Methods 0.000 claims abstract description 28
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 26
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 26
- 230000018044 dehydration Effects 0.000 claims abstract description 22
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 22
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000001110 calcium chloride Substances 0.000 claims abstract description 13
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 13
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000292 calcium oxide Substances 0.000 claims abstract description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 13
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 13
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 13
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 13
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 13
- 230000003750 conditioning effect Effects 0.000 claims abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000020477 pH reduction Effects 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011079 streamline operation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses a kind of mud dewatering method, and the mud dewatering method comprises the following steps：Dewatered sludge is treated with the concentrated sulfuric acid and carries out acidification, the pH value of sludge to be drained off is adjusted between 3-5；Ferrous sulfate is delivered toward the sludge to be drained off after acidifying, is at the uniform velocity stirred 30 minutes；After the completion of stirring, hydrogen peroxide is delivered toward sludge to be drained off, is at the uniform velocity stirred 35 minutes；After the completion of stirring, magnesium chloride, calcium chloride, calcium oxide are delivered simultaneously toward sludge to be drained off, two hours are at the uniform velocity stirred；Sludge to be drained off after the completion of conditioning is delivered to centrifugal dehydrator and carries out dewater treatment, the dehydration of sludge is completed.The mud dewatering method dehydration rate is high, floor space is small, operating cost is relatively low, cost of investment is relatively low and is easy to operation, and automaticity is high.
Description
Technical field
The present invention relates to a kind of mud dewatering method.
Background technology
In recent years, with the fast development and the effect of energy-saving and emission-reduction policy of national economy, China's town sewage
Treatment industry is developed rapidly, and water environment treatment obtains remarkable effect.Bioanalysis is that sewage disposal is the most frequently used
Method, and excess sludge is the inevitable outcome during it.Excess sludge is perishable, foul smelling, and contains
There are the harmful substances such as a large amount of pathogenic microorganisms, parasitic ovum or heavy metal, if can not effectively be handled
Disposal, it is easy to which secondary pollution threatening environment safety and public health are caused to underground water, soil etc..
Because excess sludge moisture content is high, disposal is difficult, therefore excess sludge need to be dehydrated, Zhi Houzai
Further disposed.Disposal is further handled for ease of sludge, at present, relevant department of China requires will
The moisture control for the sludge that municipal sewage plant is produced is within 60%.However, still lacking energy at present
The relatively low, additive amount of consumption is few, production capacity is big and the deep dehydration equipment of processing can be carried out continuously to sludge.
Existing dehydration technique mainly has following several in current industry：
1st, the technology being dehydrated using conventional mechanical pressure
Current dewatering technology of mud mainly has based on mechanical dehydration：Vacuum suction filter method, centrifugal process and press filtration
Method.Main plant equipment has：Drum type vacuum filter, Revolving-drum centrifuge, plate compression, belt
Filter-press dehydration, screw press dehydration etc..What this type dewatering machine was sloughed is only free clearance water in sludge,
Though through dehydration, sludge moisture content still has 75%~85% or so.
2nd, steam, flue gas or other thermals source are typically used using the technology Thermal dehydration of Thermal dehydration, it is not
It is the drying of general significance.Common equipment is paddle machine, sleeve machine or fluid bed etc., also has to granulate or spray
Mist form improves the thermal efficiency.Heated or UTILIZATION OF VESIDUAL HEAT IN because Thermal dehydration has to rely on thermal source, but due to existing
It is uneconomical using steam, it is stable using boiler flue influence system, build independent thermal source cost greatly, utilize
Waste heat must change the factors such as original process facility, furthermore, recycling is wanted after desiccation, and can not be because of dehydration
And destroy the calorific value that sludge original possesses.Therefore, in a sense, heating power desiccation be with heat energy displacement,
" with heat heat exchange " serious thermal balance negative effect occur, but the result is that " with put greatly it is small, not repay
Lose ".
3rd, carry out sludge using addition solid powder modification+plate and frame filter press pressure filtering technique addition solid powder and change
Property, make modified sludge through plate and frame filter press press filtration by sludge dewatering to moisture content below 60%, but addition
Solid powder amount is larger, only increases solids content in sludge, adds ash content in sludge, reduces dirt
Content of organics and calorific value in mud etc..Only it is using one kind its essence is without the moisture in reduction sludge
Water adds face, a kind of illusion added water more in the face.
4th, the technology being dehydrated using heating power and mechanical pressure Integral sludge it be to use a kind of low-temperature heat source handle
Sludge is heated to 150 degree -180 degree, is then dehydrated with screw press, " FKC " that such as Japan releases
Machine.This equipment still needs one thermal source of dependence, and this special pressafiner construction is complicated, valency
Lattice are expensive, and the cost for changing part is very big；Meanwhile, its production efficiency is relatively low.Therefore, in the industry using not
It is many, it is difficult to as a kind of type selecting " focus ".
5th, using current so-called " new " plate and frame filter press of technology of frame filter press filter-press dehydration,
Only add be only possible in one layer of diaphragm of rubber, barrier film moment be passed through 0.6~0.8Mpa compressed airs or
Water, presses to sludge moment and is dehydrated, moisture percentage in sewage sludge is likely to decrease to 70%-75% or so.
The content of the invention
The present invention is in order to overcome the deficiencies in the prior art, and purpose aims to provide a kind of mud dewatering method, the dirt
Mud dewatering solves existing mud dewatering method complexity and the not high technical problem of dewatering rate.
In order to solve above-mentioned technical problem, basic technical scheme proposed by the present invention is：
A kind of mud dewatering method, it comprises the following steps：
Dewatered sludge is treated with the concentrated sulfuric acid and carries out acidification, the pH value of sludge to be drained off is adjusted in 3-5
Between；
Ferrous sulfate is delivered toward the sludge to be drained off after acidifying, is at the uniform velocity stirred 30 minutes；
After the completion of stirring, hydrogen peroxide is delivered toward sludge to be drained off, is at the uniform velocity stirred 35 minutes；
After the completion of stirring, magnesium chloride, calcium chloride, calcium oxide are delivered simultaneously toward sludge to be drained off, is at the uniform velocity stirred
Two hours；
Sludge to be drained off after the completion of conditioning is delivered to centrifugal dehydrator and carries out dewater treatment, sludge is completed
Dehydration.
Further, the injected volume of the ferrous sulfate is the 0.1%-4% of sludge weight to be drained off.
Further, the injected volume of the hydrogen peroxide is the 1%-7% of sludge weight to be drained off.
Further, the injected volume of the magnesium chloride is the 3%-10% of sludge weight to be drained off.
Further, the calcium chloride is the 2%-9% of sludge weight to be drained off.
Further, the calcium oxide is the 0.1%-5% of sludge weight to be drained off.
The beneficial effects of the invention are as follows：Sludge to be drained off is acidified with the concentrated sulfuric acid and by the pH value of sludge to be drained off
Adjust between 3-5, and toward the sludge to be drained off dispensing ferrous sulfate and hydrogen peroxide after acidifying and at the uniform velocity
Stirring, what above step can greatly improve sludge can degree of dehydration.Then again toward sludge to be drained off simultaneously
Deliver magnesium chloride, calcium chloride, calcium oxide and at the uniform velocity stir, the acidity of sludge conditioning system can be neutralized, made
Sludge and filtrate are attained by defined acid-base property requirement.Centrifugal dehydrator is to the dirt to be drained off after the completion of conditioning
Mud carries out dewater treatment, completes the dehydration of sludge.Learnt from above-mentioned dehydration, sludge dewatering of the invention
Technological process is succinct, is easy to operation, and the medicament price needed for sludge conditioning is low, so as to save sludge
Dewater treatment cost.
Brief description of the drawings
Fig. 1 provides a kind of flow chart of mud dewatering method for the embodiment of the present invention.
Embodiment
Below with reference to accompanying drawing 1, the present invention is described further, but should not limit the present invention's with this
Protection domain.For convenience of explanation and understand technical scheme, illustrate below used in orientation
The orientation that word is shown by accompanying drawing is defined.
In step sl, it is acidified sludge to be drained off.Herein, the present embodiment uses the concentrated sulfuric acid to dirt to be drained off
Mud carries out acidification, and the pH value of sludge to be drained off is adjusted between 3-5.With under acid environment, dense sulphur
The lysis effect of acid is better than hydrochloric acid, and the concentrated sulfuric acid has strong oxidizing property, therefore selection is adjusted using the concentrated sulfuric acid
Save sludge acid-base property.
In step s 2, deliver ferrous sulfate and at the uniform velocity stir.Herein, toward the sludge to be drained off after acidifying
Ferrous sulfate is delivered, is at the uniform velocity stirred 30 minutes, the injected volume of ferrous sulfate herein is sludge weight to be drained off
The 0.1%-4% of amount.
In step s3, deliver hydrogen peroxide and at the uniform velocity stir.Herein, it is past after the completion of step S2 stirrings
Sludge to be drained off delivers hydrogen peroxide, at the uniform velocity stirs 35 minutes, and the injected volume of hydrogen peroxide herein is to treat
The 1%-7% of dewatered sludge weight.
In step s 4, while delivering magnesium chloride, calcium chloride, calcium oxide and at the uniform velocity stirring.Herein, walk
After the completion of rapid S3 stirrings, magnesium chloride, calcium chloride, calcium oxide are delivered simultaneously toward sludge to be drained off, is at the uniform velocity stirred
Mix two hours, the injected volume of magnesium chloride is the 3%-10% of sludge weight to be drained off, calcium chloride is to be drained off
The 2%-9% of sludge weight, calcium oxide is the 0.1%-5% of sludge weight to be drained off.
In step s 5, centrifugal dehydrator dewater treatment.Herein, by the sludge to be drained off after the completion of conditioning
It is delivered to centrifugal dehydrator and carries out dewater treatment, completes the dehydration of sludge.Herein, the sludge after processing, contains
Water rate can be controlled in less than 60%.
Sludge to be drained off is acidified with the concentrated sulfuric acid and adjusts the pH value of sludge to be drained off between 3-5, and
Ferrous sulfate and hydrogen peroxide are delivered toward the sludge to be drained off after acidifying and is at the uniform velocity stirred, and above step can be big
The earth improve sludge can degree of dehydration.Then again toward sludge to be drained off simultaneously deliver magnesium chloride, calcium chloride,
Calcium oxide is simultaneously at the uniform velocity stirred, and can be neutralized the acidity of sludge conditioning system, sludge and filtrate is attained by rule
Fixed acid-base property requirement.
Learnt from above-mentioned dehydration, mud dewatering method provided in an embodiment of the present invention has advantages below：
1st, floor space is small.In sludge dehydration process, sludge reaction time control in very short scope,
Therefore the reaction vessel volume required for is smaller, simultaneously because technological process is more succinct, required equipment,
Number of containers is also seldom；
2nd, operating cost is relatively low.Medicament in this programme required for sludge conditioning is inexpensive, and dosage
Less, therefore, the processing cost shared equally is not also relatively high；
3rd, cost of investment is relatively low.Because program flow is succinct, required equipment, number of containers are few,
Therefore the one-time investment in terms of civil engineering, equipment is relatively low；
4th, it is easy to operation, automaticity is high.Because technological process is succinct, therefore it is easier to realize automatically
Change control, streamline operation.
Embodiment one
Certain percolate treatment plant, takes 1 ton of the sludge to be drained off of moisture content 90%, is added into sludge to be drained off
The concentrated sulfuric acid, and the pH value of sludge to be drained off is adjusted to 3.5, complete after acidifying, delivered toward sludge to be drained off
20 kilograms of ferrous sulfate, is at the uniform velocity stirred 30 minutes.After the completion of stirring, 60 were delivered toward sludge to be drained off
Kilogram hydrogen peroxide, at the uniform velocity stir 35 minutes.After the completion of stirring, 50 are delivered simultaneously toward sludge to be drained off
Kilogram magnesium chloride, 40 kilograms of calcium chloride, 30 kilograms of calcium oxide and at the uniform velocity stir two hours.With
After the completion of upper process, the sludge for nursing one's health completion is delivered to centrifugal dehydrator and carries out dewater treatment, after processing
Sludge, it is 51.04% to measure moisture content.
Embodiment two
Certain municipal sewage plant, takes 1 ton of the sludge of moisture content 95%, dense sulphur is added into sludge to be drained off
Acid, and the pH value of sludge to be drained off is adjusted to 4, complete after acidifying, 40,000 are delivered toward sludge to be drained off
Gram ferrous sulfate, at the uniform velocity stir 30 minutes.After the completion of stirring, 70 kilograms were delivered toward sludge to be drained off
Hydrogen peroxide, at the uniform velocity stir 35 minutes.After the completion of stirring, 100,000 are delivered simultaneously toward sludge to be drained off
Gram magnesium chloride, 90 kilograms of calcium chloride, 50 kilograms of calcium oxide and at the uniform velocity stir two hours.More than
After the completion of process, the sludge for nursing one's health completion is delivered to centrifugal dehydrator and carries out dewater treatment, the dirt after processing
Mud, it is 48.03% to measure moisture content.
Embodiment three
Certain municipal sewage plant, takes 1 ton of the sludge of moisture content 95%, dense sulphur is added into sludge to be drained off
Acid, and the pH value of sludge to be drained off is adjusted to 3, complete after acidifying, 5,000 are delivered toward sludge to be drained off
Gram ferrous sulfate, at the uniform velocity stir 30 minutes.After the completion of stirring, 15 kilograms were delivered toward sludge to be drained off
Hydrogen peroxide, at the uniform velocity stir 35 minutes.After the completion of stirring, 35 kilograms are delivered simultaneously toward sludge to be drained off
Magnesium chloride, 20 kilograms of calcium chloride, 5 kilograms of calcium oxide and at the uniform velocity stir two hours.Above process
After the completion of, by nurse one's health complete sludge be delivered to centrifugal dehydrator carry out dewater treatment, the sludge after processing,
It is 58.8% to measure moisture content.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned
Embodiment is changed and changed.Therefore, the invention is not limited in specific reality disclosed and described above
Mode is applied, some modifications and changes to the present invention should also be as falling into the scope of the claims of the present invention
It is interior.Although in addition, having used some specific terms in this specification, these terms are intended merely to conveniently
Illustrate, any limitation is not constituted to the present invention.
Claims (6)
1. a kind of mud dewatering method, it is characterised in that comprise the following steps：
Dewatered sludge is treated with the concentrated sulfuric acid and carries out acidification, the pH value of sludge to be drained off is adjusted in 3-5
Between；
Ferrous sulfate is delivered toward the sludge to be drained off after acidifying, is at the uniform velocity stirred 30 minutes；
After the completion of stirring, hydrogen peroxide is delivered toward sludge to be drained off, is at the uniform velocity stirred 35 minutes；
After the completion of stirring, magnesium chloride, calcium chloride, calcium oxide are delivered simultaneously toward sludge to be drained off, is at the uniform velocity stirred
Two hours；
Sludge to be drained off after the completion of conditioning is delivered to centrifugal dehydrator and carries out dewater treatment, sludge is completed
Dehydration.
2. mud dewatering method according to claim 1, it is characterised in that the ferrous sulfate
Injected volume is the 0.1%-4% of sludge weight to be drained off.
3. mud dewatering method according to claim 1, it is characterised in that the hydrogen peroxide
Injected volume is the 1%-7% of sludge weight to be drained off.
4. mud dewatering method according to claim 1, it is characterised in that the throwing of the magnesium chloride
It is high-volume the 3%-10% of sludge weight to be drained off.
5. mud dewatering method according to claim 1, it is characterised in that the calcium chloride is to treat
The 2%-9% of dewatered sludge weight.
6. mud dewatering method according to claim 1, it is characterised in that the calcium oxide is to treat
The 0.1%-5% of dewatered sludge weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128211.2A CN107162382A (en) | 2016-03-07 | 2016-03-07 | A kind of mud dewatering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128211.2A CN107162382A (en) | 2016-03-07 | 2016-03-07 | A kind of mud dewatering method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107162382A true CN107162382A (en) | 2017-09-15 |
Family
ID=59848461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610128211.2A Pending CN107162382A (en) | 2016-03-07 | 2016-03-07 | A kind of mud dewatering method |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675614A (en) * | 2018-06-14 | 2018-10-19 | 广州市浩逸环保科技有限公司 | A kind of sludge environment-friendly furnace drying method |
| CN110092569A (en) * | 2019-04-15 | 2019-08-06 | 华南理工大学 | A kind of mud dewatering method |
| CN110590121A (en) * | 2019-08-30 | 2019-12-20 | 中山大学 | A kind of sludge dewatering agent and sludge dehydration method |
| CN111635113A (en) * | 2020-04-27 | 2020-09-08 | 同济大学 | A method for sludge dewatering and conditioning using calcium peroxide |
| CN111807676A (en) * | 2020-05-31 | 2020-10-23 | 浙江工业大学 | A method of ferrous iron-induced calcium peroxide coupled with polymer flocculants to promote sludge dewatering |
| CN119281790A (en) * | 2024-11-05 | 2025-01-10 | 东北林业大学 | Resource treatment method for printing and dyeing sludge building materials based on non-burning low-temperature process |
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| CN102464440A (en) * | 2010-11-05 | 2012-05-23 | 广东溢达纺织有限公司 | Method for reducing physicochemical and biochemical mixed sludge |
| WO2012146324A1 (en) * | 2011-04-29 | 2012-11-01 | Feralco Ab | Method for treatment of sludge from water and wastewater treatment plants with chemical treatment |
| KR101235889B1 (en) * | 2011-02-25 | 2013-02-21 | 현대제철 주식회사 | Method for Water Treatment |
| CN103723906A (en) * | 2013-12-20 | 2014-04-16 | 湖南大学 | Deep dehydration recycling method for livestock and poultry feces |
| CN104176900A (en) * | 2014-08-21 | 2014-12-03 | 北京同创碧源水务科技发展有限公司 | Deep dehydration method of sludge after domestic sewage treatment |
| CN104891779A (en) * | 2015-06-29 | 2015-09-09 | 北京工业大学 | Combination type efficient sludge dewatering conditioning method |
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- 2016-03-07 CN CN201610128211.2A patent/CN107162382A/en active Pending
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| CN102464440A (en) * | 2010-11-05 | 2012-05-23 | 广东溢达纺织有限公司 | Method for reducing physicochemical and biochemical mixed sludge |
| KR101235889B1 (en) * | 2011-02-25 | 2013-02-21 | 현대제철 주식회사 | Method for Water Treatment |
| WO2012146324A1 (en) * | 2011-04-29 | 2012-11-01 | Feralco Ab | Method for treatment of sludge from water and wastewater treatment plants with chemical treatment |
| CN103723906A (en) * | 2013-12-20 | 2014-04-16 | 湖南大学 | Deep dehydration recycling method for livestock and poultry feces |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675614A (en) * | 2018-06-14 | 2018-10-19 | 广州市浩逸环保科技有限公司 | A kind of sludge environment-friendly furnace drying method |
| CN110092569A (en) * | 2019-04-15 | 2019-08-06 | 华南理工大学 | A kind of mud dewatering method |
| CN110590121A (en) * | 2019-08-30 | 2019-12-20 | 中山大学 | A kind of sludge dewatering agent and sludge dehydration method |
| CN111635113A (en) * | 2020-04-27 | 2020-09-08 | 同济大学 | A method for sludge dewatering and conditioning using calcium peroxide |
| CN111807676A (en) * | 2020-05-31 | 2020-10-23 | 浙江工业大学 | A method of ferrous iron-induced calcium peroxide coupled with polymer flocculants to promote sludge dewatering |
| CN119281790A (en) * | 2024-11-05 | 2025-01-10 | 东北林业大学 | Resource treatment method for printing and dyeing sludge building materials based on non-burning low-temperature process |
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