CN109179925A - Improve the preprocess method of city sludge dewatering - Google Patents
Improve the preprocess method of city sludge dewatering Download PDFInfo
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- CN109179925A CN109179925A CN201710785659.6A CN201710785659A CN109179925A CN 109179925 A CN109179925 A CN 109179925A CN 201710785659 A CN201710785659 A CN 201710785659A CN 109179925 A CN109179925 A CN 109179925A
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- sludge
- preprocess method
- improving
- city
- sludge dewatering
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- 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
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- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to the preprocess method for improving city sludge dewatering, the forward and backward feed opening for first passing through pipe-line mixer is separately added into coagulant and rupture of membranes agent, hybrid reaction into residual active sludge；It will be passed through in high-order tempering tank in the sludge for being added to coagulant and rupture of membranes agent, neutralizer be added while agitating, obtain the sludge that pH value is 6.2 ~ 7.0；Obtained sludge is continuously poured into inclined plate water segregator, gravitational settling is carried out, after sedimentation, it is divided into the supernatant layer on upper layer and the sludge blanket of lower layer, the light supernatant layer in upper layer goes out from the overflow port overflow of inclined plate water segregator, and lower layer's sludge constantly settles accumulation, and bottom moisture percentage in sewage sludge is reduced to 94 ~ 98wt.%.Sludge pre-treatment method of the invention by sludge modification with it is concentration integrated, overturn tradition first be concentrated after modified sewage sludge pretreating process, technique is brief, and condition is easily-controllable, realize sludge serialization, scale processing；Medicament used does not influence sludge calorific value, is conducive to the subsequent disposition of sludge without any solid increase-volume in treatment process.
Description
Technical field
The invention belongs to technical field of sludge treatment, and in particular to a kind of pretreatment side for improving city sludge dewatering
Method, the present invention is especially suitable for sewage treatment plants generate high-moisture percentage residual active sludge and the content of organic matter compared with
High industrial sludge.
Background technique
China is influenced by the thought of " the light mud of heavy water ", and Treatment of Sludge is too many compared with sewage treatment bills due, is one " long-standing "
Problem.So innoxious, stabilisation is the base of various processing techniques from the point of view of the general thought that specific resistance to filtration technology develops
Plinth requirement, minimizing is the task of top priority, can extenuate sludge rapid growth pressure, and the key of minimizing is to be dehydrated, who is grasped
High-effective sludge dehydration technology, who can occupy leading market status；Energy resourcesization are at present by current social economy and sludge phase
Policy implication is closed, is difficult to have both.Either Sludge landfill, burning, building materials utilization, land use all be unable to do without and are dehydrated, and depth
Dehydration is a kind of most efficient, the minimum dehydration means of cost to be reduced in dehydration, and quenched broken wall is the pass realizing deep dehydration and breaking through
Key link.
The quenched wall breaking technology of traditional sludge generally uses the medicaments such as ferric trichloride, lime, PAM, and reagent cost is high, additive amount
Greatly, there is solid increment to sludge, be unfavorable for subsequent disposition, live running environment is poor, and dosing is modified to be unable to serialization operation, is easy
Cause secondary pollution problems.
Traditional sludge pretreating process is that dosing is modified after being first concentrated, and concentration is generally dense using mechanical thickening or dosing gravity
Contracting, mechanical thickening take up a large area, and energy consumption is high, also need to add a medicament when modified, cause medicament to repeat to add, increase
Reagent cost, and can not continuous operation, in addition also increase the sludge scale of construction, increase subsequent processing amount, with mud decrement
It disagrees.
Traditional sludge dewatering pretreating process process: excess sludge pump house → mud storage pool → sludge concentration tank → sludge changes
Property pond → transfer pond → filter press, often, process flow is long for sludge lifting, complicated for operation, and operation and cost of investment are high.
It is not high then to there is utilization rate of equipment and installations in deep dehydration process, the deep dehydration amplitude scarce limit such as less, such as the technique having
Process is only limitted to be dehydrated 80% sludge degree of moisture content, and some processes can only drop to 99% deeply dehydrating sludge of moisture content
60%.And the serialization and automation of these processes production difficult to realize.
Summary of the invention
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of improvement city sludge dewaterings
Preprocess method is mentioned in conjunction with relevant device to quick, effective stability and cell zoogloea structure for destroying sludge colloid
The dewatering of high sludge.
The technical solution of the present invention is as follows: a kind of preprocess method for improving city sludge dewatering, includes the following steps:
(1) the forward and backward feed opening for first passing through pipe-line mixer is separately added into coagulant and rupture of membranes agent into residual active sludge, mixes
Close reaction；
(2) then, it will be added in coagulant and the sludge of rupture of membranes agent and be passed through in high-order tempering tank in step (1), in stirring
Neutralizer is added simultaneously, obtains the sludge that pH value is 6.2 ~ 7.0；
(3) sludge obtained in step (2) is continuously poured into inclined plate water segregator, carries out gravitational settling, after sedimentation, be divided into
The supernatant layer on upper layer and the sludge blanket of lower layer, the light supernatant layer in upper layer go out, lower layer's sludge from the overflow port overflow of inclined plate water segregator
Constantly sedimentation accumulation, bottom moisture percentage in sewage sludge are reduced to 94 ~ 98wt.%；
(4) sludge handled through step (3) is separated by solid-liquid separation；
Wherein, residence time of the sludge in pipe-line mixer is 5 ~ 10s；High-order tempering tank and inclined plate water segregator successively by height to
Low setting.
It is practical for integrated sludge condensation modification process, the residual activity dirt of high-moisture percentage using such method
Mud first passes around pipe-line mixer and is separately added into coagulant and rupture of membranes agent according to sequencing, subsequently enters high-order tempering tank,
Neutralizer is added under the action of blender, after sludge and each medicament are sufficiently mixed, falls into the inclined plate water segregator of lower section, modified sewage sludge
Enter the buffer area of inclined plate water segregator by center down-comer by intermediate receiving hopper, is equipped with reflecting plate, buffer area in buffer area
Lower part is densification area, and top is folded plate Disengagement zone, and folded plate Disengagement zone is made of folding inclined plate equipment, and the modified sewage sludge of floating is being rolled over
Under the action of formula inclined plate equipment, wherein solid small particles object turn back automatically downward sedimentation, intergranular Free water or Interstitial Water by
It gradually separates, the clear water separated enters catch basin by top weir and is discharged, and the sludge little particle constantly to settle down is fallen into
The densification area of bottom.Under the effect of gravity, as the sludge fluid of entrance increases, bucket bottom settled sludge particle increases, containing solid
Amount is gradually increased, supernatant liquor by it is subsequent enter bucket fluid from overflow port squeeze out, so that mud-water separation is realized, up to sludge condensation
Purpose.Whole process is carried out continuously, and moisture percentage in sewage sludge is up to 94-98% after concentration.
Quenched modification, flocculation, the concentration of sludge are divided three steps of water to be integrated on an agent set to complete by the present invention,
Different agents are added according to certain sequence by specific device, sludge Zeta potential is reduced in a manner of oxidation, charge neutrality etc., is broken
Bad sludge colloform texture reduces capillary water and combines water, increases gap water content, reduce resistivity and viscosity, improve the mistake of sludge
Performance is filtered, is allowed to be conducive to the progress of filter operation.
The technique is brief, easy to operate, and required equipment land occupation is few, and cost of investment is low, and realizes deeply dehydrating sludge
Serialization, stabilisation, automatic operating, energy consumption are small.
Further, the residual active sludge is that moisture content is higher than 98 wt.% and the secondary settling tank sludge without concentration
Or primary sludge.
Further, coagulant is ferrous sulfate solution in step (1).
Further, the concentration of the ferrous sulfate solution is 10 ~ 35wt.%, preferably 20wt.%, the ferrous sulfate
Solution is formulated by drying-type ferrous sulfate or anhydrous type ferrous sulfate.
Further, which is characterized in that the additive amount of the coagulant is the 0.01 ~ 0.5% of wet mud quality, preferably
0.4%, the adding conditional of coagulant are as follows: wet mud temperature is -10 ~ 60 DEG C.
Further, rupture of membranes agent is one of hydrogen peroxide, SODIUM PERCARBONATE in step (1), wherein the concentration of hydrogen peroxide is
8 ~ 36wt.%, preferably 15wt.%；SODIUM PERCARBONATE is commonly called as Solid hydrogen peroxide, has both hydrogen peroxide function, has strong oxidizing property, and
Oxygen can be discharged, the dissolved oxygen in sludge is helped to improve, effectively prevent sludge bulking, improves sludge settling and filterability
Energy.
Further, the additive amount of the rupture of membranes agent is the 0.01 ~ 0.2% of wet mud quality, preferably 0.15%.
Further, the inclined plate water segregator includes ontology, and folded plate Disengagement zone, the folded plate Disengagement zone are equipped in the ontology
The top sludge that is equipped with for receiving high-order tempering tank that treated receiving hopper, receiving hopper passes through a center down-comer and ontology
Interior densification area connection；The folded plate Disengagement zone is made of the folded plate that muti-piece cross section is bending.
Further, the mixing speed quickly stirred in step (2) is greater than 120r/min.
Further, neutralizer is one of limewash, liquid alkaline in step (2).
Further, step (2) is that liquid alkaline or limewash are first added in residual active sludge, adjusts pH value, then will
Sludge is discharged into inclined plate water segregator, is separated by solid-liquid separation, and prevents sludge from corroding subsequent pipeline and equipment.
Further, it is separated by solid-liquid separation in step (4) main by strong filter press completion, the dry mud cake of filters pressing acquisition and abjection
Water.
Further, the pipe-line mixer includes two sub-pipes mixers being sequentially connected in series.
In the present invention, ferrous sulfate is added in the residual active sludge of high-moisture percentage, is acidified residual active sludge, generates
Negative electrical charge is attracted each other and is neutralized on positively charged ion and mud granule, compresses mud granule electric double layer, makes mud granule
It is de- steady, mud granule surface adsorption water is discharged, so as to improve sludge filtration performance；On the other hand, the Fe in ferrous sulfate2+As
Catalyst occurs Fenton's reaction with hydrogen peroxide, improves the oxidation efficiency of organic matter in sludge.
In the present invention, for sludge after the reduction coagulating treatment of step (1), sludge pH value becomes 3 ~ 6, and ferrous sulfate is added
After 5 ~ 10s, hydrogen peroxide can be added into sludge, can use the Fe in ferrous sulfate2+Accelerate oxidation reaction, generates strong oxidizing property
Hydroxyl radical free radical, reacted with the organic matter in sludge, quickly dissolve extracellular polymeric EPS, remove loose attachment LB, destroy
Cell wall discharges cell interior water.Meanwhile Fe2+It is oxidized to Fe3+Generate coagulating sedimentation, part heavy metal by net catch condensation and
Removal.
In the present invention, " charge neutrality " absorption of ferrous sulfate " occur simultaneously with hydrogen peroxide effect weave in.
Compared with prior art, the invention has the following beneficial effects:
(1) sludge modification with it is concentration integrated, overturn tradition first be concentrated after modified sewage sludge pretreating process, technique is brief, condition
It is easily-controllable, it can be achieved that sludge serialization, scale processing；
(2) sewage treatment plant for creating or extending is without building mud storage pool, high water content sludge directly from sludge reflux pump house or
Primary sedimentation tank enters mire preprocess system, sludge condensation and modified two processing steps of sludge conditioning is combined into one, and can
To adapt to moisture content >=99.2% high-moisture percentage residual active sludge, by the modified integrated pretreatment system of concentration, sludge contains
Water rate can be down to 97% hereinafter, without concentration；
(3) preprocessing process is completed in the pipe-line mixer being successively connected to from high to low, high-order tempering tank, inclined plate water segregator, is subtracted
Lack sludge lifting number, reduces operation and cost of investment；
(4) medicament used in does not influence sludge calorific value without any solid increase-volume, no chloride ion, is conducive to the subsequent disposition of sludge；
(5) there is certain removal ability to heavy metal ion, the processing of heavy metal pollution or subsequent heavy metal ion can be reduced
Pressure；
(6) main equipment quantity is few, and configures from high to low, and occupied area is small.
Detailed description of the invention
Fig. 1 is a kind of structure diagram of sludge pretreatment equipment of the invention.
In figure, 1- pipe-line mixer, 2- high position tempering tank, 3- receiving hopper, the center 4- down-comer, 5- reflecting plate, 6- densification
Area, 7- folded plate Disengagement zone, 8- catch basin, 9- strong filter press.
Specific embodiment
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1
The present embodiment is by taking the residual active sludge of sewage plant secondary settling tank moisture content 98wt.% as an example to preprocess method of the invention
It is illustrated, comprising the following steps:
(1) it restores coagulation step: the residual active sludge of 98 wt.% of sewage plant secondary settling tank moisture content is extracted by sludge pump,
By the sub-pipes mixer of front, the drying-type ferrous sulfate solution that concentration is 20wt.% is added, according to wet mud total weight
0.4%(w/w) addition, hybrid reaction 3s, obtain pH value be 4.8 sludge；
In the dosing mouth of latter sub-pipes mixer, rupture of membranes agent is added, hydrogen peroxide is selected in rupture of membranes agent, and dosage is wet mud amount
0.2%(w/w), the concentration of hydrogen peroxide is 15wt.%, which is then discharged into high-order tempering tank 2, is added simultaneously by reaction 7s
Liquid alkaline.
(2) sludge obtained in step (2) is continuously poured into inclined plate water segregator, carries out gravitational settling, after sedimentation, on
Layer clear water is by overflow along flowing continually out, and lower layer's sludge constantly settles accumulation, and bottom moisture percentage in sewage sludge is reduced to 94 ~ 98wt.%,
It pre-processes and completes to this sludge dewatering.
(3) it is separated by solid-liquid separation, the sludge handled through step (2) enters strong filter press 9 by plunger pump, through strong filter press
Dehydration, moisture content of the cake are down to 50.3%, feed pressure 0.5MPa, feed time 1.4 hours, squeeze pressure 2.2MPa, are pressed
It squeezes the time 0.5 hour, mud cake Automatic-falling, cake discharge 0.1 hour, total duration is 2 hours/batches.
Protrusion effect of the invention:
Through above-mentioned sludge pre-treatment method, the extracellular polymeric of sludge colloid is cracked by quick oxidation, dissolution and cell wall, cell
Internal water and combination water release become Free water, and dewatering performance of sludge improves, and specific drainage pressure is by 2.65 × 1013m·kg-1It is down to
3.6×1012m·kg-1, sludge specific resistance reduction by 86.4%, in conjunction with plate and frame filter press, moisture percentage in sewage sludge is down to by former mud 98wt.%
50wt.%, sludge volume reduce 96%.
Although can also obtain pretreatment similar in dewatering and the method for the present invention using traditional sludge pre-treatment method
Sludge, but the pretreated sludge scale of construction increases when using conventional method, increases subsequent processing pressure, and that treated is dirty
Mud purposes becomes more narrow, is not suitable for burning, it is difficult to carry out innoxious use to sludge.
Embodiment 2
The present embodiment is by taking the residual active sludge of sewage plant secondary settling tank moisture content 99wt.% as an example to preprocess method of the invention
It is illustrated, comprising the following steps:
(1) it restores coagulation step: the residual active sludge of 99 wt.% of sewage plant secondary settling tank moisture content is extracted by sludge pump,
By the sub-pipes mixer of front end, addition concentration is 15wt.% drying-type ferrous sulfate solution, according to wet mud total weight
It 0.2%(w/w) adds, hybrid reaction 2s, obtains the sludge that pH value is 5.2；
(2) in the entrance of latter sub-pipes mixer, rupture of membranes agent is added, hydrogen peroxide is selected in rupture of membranes agent, and dosage is wet mud amount
0.1%(w/w), the concentration of hydrogen peroxide is 10wt%, incorporation time 5s, then sludge is discharged into high-order tempering tank, while stone is added
Buck, stirring；
(3) sedimentation concentration step: sludge obtained in step (2) is continuously poured into inclined plate water segregator, carries out gravitational settling, is passed through
After sedimentation, upper layer clear water is by overflow along flowing continually out, and lower layer's sludge constantly settles accumulation, and bottom moisture percentage in sewage sludge is reduced to 94
~98%。
(4) it is separated by solid-liquid separation, the sludge handled through step (3) enters diaphragm filter press by screw pump, through diaphragm filter press
Dehydration, moisture content of the cake are down to 55.6%, feed pressure 1.0MPa, feed time 2.3 hours, squeeze pressure 1.2MPa, are pressed
It squeezes the time 0.5 hour, the cake discharge time 0.2 hour, total duration was 3 hours/batches, and it is small to shorten 1 compared with conventional membrane filter press total duration
When.
Claims (10)
1. a kind of preprocess method for improving city sludge dewatering, which comprises the steps of:
(1) the forward and backward feed opening for first passing through pipe-line mixer (1) is separately added into coagulant and rupture of membranes into residual active sludge
Agent, hybrid reaction；
(2) then, it will be added in coagulant and the sludge of rupture of membranes agent and be passed through in high-order tempering tank (2) in step (1), stirred
While be added neutralizer, obtain the sludge that pH value is 6.2 ~ 7.0；
(3) sludge obtained in step (2) is continuously poured into inclined plate water segregator, carries out gravitational settling, after sedimentation, be divided into
The supernatant layer on upper layer and the sludge blanket of lower layer, the light supernatant layer in upper layer go out, lower layer's sludge from the overflow port overflow of inclined plate water segregator
Constantly sedimentation accumulation, bottom moisture percentage in sewage sludge are reduced to 94 ~ 98wt.%；
(4) sludge handled through step (3) is separated by solid-liquid separation；
Wherein, residence time of the sludge in pipe-line mixer (1) is 5 ~ 10s；High-order tempering tank (2) and inclined plate water segregator are successively
It is arranged from high to low.
2. the preprocess method according to claim 1 for improving city sludge dewatering, which is characterized in that the residue
Activated sludge is that moisture content is higher than 98 wt.% and secondary settling tank sludge or primary sludge without concentration.
3. improving the preprocess method of city sludge dewatering according to claim l, which is characterized in that step (1)
Middle coagulant is ferrous sulfate solution.
4. the preprocess method according to claim 3 for improving city sludge dewatering, the ferrous sulfate solution
Concentration is 10 ~ 35wt.%, and the ferrous sulfate solution is formulated by drying-type ferrous sulfate or anhydrous type ferrous sulfate.
5. the preprocess method according to claim 3 for improving city sludge dewatering, which is characterized in that the coagulation
The additive amount of agent is the 0.01 ~ 0.5% of wet mud quality, the adding conditional of coagulant are as follows: wet mud temperature is -10 ~ 60 DEG C.
6. improving the preprocess method of city sludge dewatering according to claim l, which is characterized in that step (1)
Middle rupture of membranes agent is one of hydrogen peroxide, SODIUM PERCARBONATE, wherein the concentration of hydrogen peroxide is 8 ~ 36wt.%.
7. improving the preprocess method of city sludge dewatering according to claim l, which is characterized in that the rupture of membranes
The additive amount of agent is the 0.01 ~ 0.2% of wet mud quality.
8. improving the preprocess method of city sludge dewatering according to claim l, which is characterized in that the inclined plate
Water segregator includes ontology, is equipped with folded plate Disengagement zone (7) in the ontology, and the top of the folded plate Disengagement zone (7) is equipped with for receiving
The receiving hopper (3) of high-order tempering tank (2) treated sludge, receiving hopper (3) pass through a center down-comer (4) and intrinsic pressure
Mi Qu (6) connection；The folded plate Disengagement zone (7) is made of the folded plate that muti-piece cross section is bending.
9. improving the preprocess method of city sludge dewatering according to claim l, which is characterized in that step (2)
Middle neutralizer is one of limewash, liquid alkaline.
10. according to the described in any item preprocess methods for improving city sludge dewatering in claim l ~ 9, feature exists
In the pipe-line mixer (1) includes two sub-pipes mixers being sequentially connected in series.
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| CN201710785659.6A CN109179925A (en) | 2017-09-04 | 2017-09-04 | Improve the preprocess method of city sludge dewatering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422980A (en) * | 2019-07-24 | 2019-11-08 | 哈尔滨工业大学（深圳） | A kind of method that the dosing of batch-type sludge condensation improves dewatering integrated processing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787974A (en) * | 2003-04-23 | 2006-06-14 | 凯米拉·开米公司 | Method of treating digested sludge |
| US20110023715A1 (en) * | 2006-12-12 | 2011-02-03 | Veolia Water Solutions & Technologies Support | Method for treating wastewater or produced water |
| CN104788007A (en) * | 2015-04-29 | 2015-07-22 | 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 |
| CN204689863U (en) * | 2015-06-04 | 2015-10-07 | 湖南永清环保研究院有限责任公司 | A kind of sludge condensation division box and system |
-
2017
- 2017-09-04 CN CN201710785659.6A patent/CN109179925A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787974A (en) * | 2003-04-23 | 2006-06-14 | 凯米拉·开米公司 | Method of treating digested sludge |
| US20110023715A1 (en) * | 2006-12-12 | 2011-02-03 | Veolia Water Solutions & Technologies Support | Method for treating wastewater or produced water |
| CN104788007A (en) * | 2015-04-29 | 2015-07-22 | 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 |
| CN204689863U (en) * | 2015-06-04 | 2015-10-07 | 湖南永清环保研究院有限责任公司 | A kind of sludge condensation division box and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422980A (en) * | 2019-07-24 | 2019-11-08 | 哈尔滨工业大学（深圳） | A kind of method that the dosing of batch-type sludge condensation improves dewatering integrated processing |
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