CN101885571B - Processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment - Google Patents
Processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment Download PDFInfo
- Publication number
- CN101885571B CN101885571B CN201010192017A CN201010192017A CN101885571B CN 101885571 B CN101885571 B CN 101885571B CN 201010192017 A CN201010192017 A CN 201010192017A CN 201010192017 A CN201010192017 A CN 201010192017A CN 101885571 B CN101885571 B CN 101885571B
- Authority
- CN
- China
- Prior art keywords
- sludge
- phosphorus
- tank
- mud
- chemical reaction
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment. The processing system comprises a mixed tank, an anaerobic phosphorus releasing tank, a sand filtering tank, a chemical reaction tank, a settling tank, a sludge concentration tank and a sludge dewatering machine, wherein the mixed tank is sequentially connected with the anaerobic phosphorus releasing tank, the sand filtering tank, the chemical reaction tank and the settling tank and is provided with a carbon source inlet and an alkali liquor inlet; the mixed tank and the anaerobic phosphorus releasing tank are both internally provided with stirring equipment; the chemical reaction tank is provided with a phosphorus removing agent inlet; the sludge discharge opening of the settling tank is connected with the sludge concentration tank; the sludge discharge opening of the sludge concentration tank is connected with the sludge dewatering machine; and the sludge outlet of the sludge dewatering machine is used as an output port. The processing system greatly enhances the phosphorus releasing rate of the sludge by arranging the stirring equipment in the anaerobic phosphorus releasing tank and solves the problem of higher concentration of suspended matters contained in the supernate of the anaerobic phosphorus releasing tank by additionally arranging the sand filtering tank behind the anaerobic phosphorus releasing tank, thereby enabling the recovered phosphorus resources to be cleaner.
Description
Technical field
The present invention relates to field of sludge treatment, particularly relate to a kind of treatment system and method that from excess sludge obtained after municipal sewage, reclaims phosphorus.
Background technology
Phosphorus is the minimum limit factor of water body autotrophic organism, when the concentration of phosphorus reaches 0.015mg/L in the water body, promptly can cause body eutrophication.Simultaneously, phosphorus is to be close to unidirectional round-robin element at nature, because the exploitation of phosphorus ore and phosphorus are close to unidirectional circulation at occurring in nature, phosphor resource is exhausted day by day.Adopt proper process technology and effective recovery method, not only can effectively control the eutrophication of water body, can also obtain available phosphor resource, to significance is arranged the working life that prolongs phosphate rock resource.
Remove phosphorus nutrition object space method in the existing technology and mainly contain three kinds, be i.e. chemical method, biological process and biochemical process.Effectively dephosphorization of chemical method, but produce a large amount of chemical sludges, be difficult to dispose, make its range of application limited.The biological process dephosphorization is to utilize the consumption of mikrobe to phosphorus, carries out the removal of phosphorus through the method for getting rid of excess sludge, but the excess sludge of discharging is if miscarriage can cause secondary pollution to environment.Biochemical process is the active sludge in the biological treatment under anaerobic to be produced phosphate use add chemical agent phosphorus is removed.But in the biological chemistry dephosphorization process, the chemical sludge that chemical dephosphorization part is produced can not be recycled, and causes the waste of phosphor resource, and chemical sludge deals with improperly, still can cause environmental pollution.The phosphorus recovery technology is directed against the higher phosphorus-containing wastewater of phosphorus content mostly at present, and recycles with the form of slow-release fertilizers such as struvite mostly, because the limitation of use range has limited the application of phosphorus recovery technology.
Summary of the invention
In order to overcome the shortcoming that phosphorus in the excess sludge after the existing WWT is prone to cause the phosphorus serious waste in secondary pollution and the mud; The embodiment of the invention provides a kind of treatment system and method that from excess sludge obtained after municipal sewage, reclaims phosphorus; Phosphorus in the excess sludge is fully discharged, and reclaim clean phosphor resource through adding chemical agent.
Embodiment of the invention technical solution problem realizes through following technical proposals:
The embodiment of the invention provides a kind of treatment system that from excess sludge obtained after municipal sewage, reclaims phosphorus, comprising:
Mixing pit, anaerobic phosphorus releasing pool, sand filter, chemical reaction pond, settling tank, sludge thickener and sludge dewatering equipment;
Said mixing pit is connected with anaerobic phosphorus releasing pool, sand filter, chemical reaction pond and settling tank in order; Said mixing pit be provided with carbon source add the inlet with alkali lye add inlet; Be equipped with whipping device in said mixing pit and the anaerobic phosphorus releasing pool; Said chemical reaction pond is provided with dephosphorization agent and adds inlet;
The mud discharging mouth of said settling tank is connected with sludge thickener, and the mud discharging mouth of said sludge thickener is connected with sludge dewatering equipment, and the mud mouth of sludge dewatering equipment is as delivery port.
The embodiment of the invention also provides a kind of treatment process that from excess sludge obtained after municipal sewage, reclaims phosphorus, comprising:
Adopt above-mentioned treatment system;
Excess sludge obtained after municipal sewage is mixed with the carbon source and the alkali lye that add in mixing pit;
Mud after mixing gets in the anaerobic phosphorus releasing pool, releases phosphorus under whipped state, and the velocity slope of stirring is controlled at≤280S
-1, the residence time of mud in anaerobic phosphorus releasing pool is 4～6 hours;
Supernatant water outlet after the anaerobic phosphorus releasing pool releases phosphorus gets in the sand filter and filters the suspended substance in the filtering supernatant;
Water outlet after sand filter filters gets in the chemical reaction pond, carries out hybrid reaction with the dephosphorization liquid that is added to chemical reaction pond;
The mud mixture of discharging after the chemical reaction pond dephosphorization gets in the settling tank and carries out mud-water separation, and the bottom mud of settling tank gets into sludge thickener, and supernatant effluxes;
Sludge thickener further concentrates the mud that settling tank enters, and the mud after concentrating gets into sludge dewatering equipment and dewaters, and supernatant effluxes;
Mud after the sludge dewatering equipment dehydration is recycled as the phosphorous chemical industry starting material.
Can find out in the technical scheme that provides through the invention described above embodiment; Cooperate the formation treatment system through mixing pit, anaerobic phosphorus releasing pool, sand filter, chemical reaction pond, settling tank, sludge thickener and sludge dewatering equipment in the embodiment of the invention, whipping device is set in anaerobic phosphorus releasing pool, compare with traditional anaerobic phosphorus releasing pool; Improved the phosphorus rate of releasing of mud greatly; Shortened and released the phosphorus time, and after anaerobic phosphorus releasing pool, set up sand filter, solved concentration of suspension problem of higher in the anaerobic phosphorus releasing pool supernatant; Make the phosphor resource of recovery cleaner, guaranteed that the phosphor resource that reclaims can be applied to phosphorous chemical industry.
Description of drawings
Fig. 1 is the embodiment of the invention reclaims the treatment system of phosphorus from excess sludge obtained after municipal sewage a synoptic diagram;
Each label is among the figure:
The 1-mixing pit; 11-mixing pit whipping device; The 2-anaerobic phosphorus releasing pool; 21-anaerobic pond whipping device; The 3-sand filter; The 4-chemical reaction pond; 41-chemical bath whipping device; The 5-settling tank; The 6-sludge thickener; The 7-sludge dewatering equipment; 8-backflow well; The 9-return line; The import of A-mud; The B-carbon source adds inlet; The C-alkali source adds inlet; The D-dephosphorization agent adds inlet; The mud mouth of E-sludge dewatering equipment; The water outlet of F-backflow well.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further.
Embodiment one
Present embodiment provides a kind of treatment system that from excess sludge obtained after municipal sewage, reclaims phosphorus, and the excess sludge that is used for after the WWT reclaims phosphorus, and as shown in Figure 1, this treatment system comprises:
Mixing pit 1, anaerobic phosphorus releasing pool 2, sand filter 3, chemical reaction pond 4, settling tank 5, sludge thickener 6 and sludge dewatering equipment 7;
Wherein, mixing pit 1 is provided with the import A that introduces excess sludge obtained after municipal sewage, and the outlet of mixing pit 1 is connected with anaerobic phosphorus releasing pool 2, sand filter 3, chemical reaction pond 4 and settling tank 5 in order; Said mixing pit 1 is provided with carbon source and adds inlet B and alkali lye and add the C that enters the mouth, and is used in mixing pit 1, adding carbon source and alkali lye, also is provided with whipping device 11 in the mixing pit 1, and the carbon source and the alkali lye that add are well mixed with processing mud; Be equipped with whipping device 21 in the anaerobic phosphorus releasing pool 2, the mud that anaerobic phosphorus releasing pool 2 is handled reaches better releases the phosphorus effect; Chemical reaction pond 4 is provided with dephosphorization agent and adds inlet D, is used in chemical reaction pond 4, adding dephosphorization agent, and dephosphorization agent generally can adopt slaked lime; In the chemical reaction pond 4 whipping device 41 can be set.
The mud discharging mouth of described settling tank 5 is connected with sludge thickener 6, and the mud discharging mouth of said sludge thickener 6 is connected with sludge dewatering equipment 7, and the mud mouth E of sludge dewatering equipment 7 is as the delivery port of phosphorus containing sludge.
In the above-mentioned treatment system backflow well 8 can also be set; This backflow well 8 is connected with the mud discharging mouth of anaerobic phosphorus releasing pool 2, the water port of settling tank 5, the water port of sludge thickener 6 and the water port of sludge dewatering equipment 7 respectively, and the water outlet F of backflow well 8 is connected to outside biochemical system.
In the above-mentioned treatment system, the whipping device 21 in the anaerobic phosphorus releasing pool 2 can adopt rotating speed gradient≤280S
-1Stirrer.
Be provided with supporting layer and filter material layer (not shown) in the sand filter 3 in the above-mentioned treatment system; Wherein supporting layer is made up of natural avette stone (pebbles); Be positioned at the lowest layer of sand filter, it is big that avette stone particle diameter becomes from top to bottom gradually, and supporting layer thickness is about 400mm; Filter material layer is made up of silica sand, is arranged on the supporting layer, and filter material layer thickness is about 700mm.
Through above-mentioned treatment system; Excess sludge after the Treating Municipal Sewage is got into mixing pit; With carbon source that adds and alkali lye thorough mixing, mixed mud gets into anaerobic phosphorus releasing pool and releases phosphorus, and the rich phosphorus supernatant of P releasing tank gets into chemical reaction pond after sand filter filters; In chemical reaction pond, get into settling tank with chemical agent thorough mixing reaction back; In settling tank, carry out mud-water separation, the mud of settling tank bottom gets into sludge dewatering equipment after concentration basin concentrates, and the acquisition mud cake carries out reuse as the starting material of phosphorous chemical industry.
The treatment system of present embodiment is provided with whipping device in anaerobic phosphorus releasing pool; Compare with traditional anaerobic phosphorus releasing pool; Improve the phosphorus rate of releasing of mud greatly, and after anaerobic phosphorus releasing pool, set up sand filter, solved concentration of suspension problem of higher in the anaerobic phosphorus releasing pool supernatant; Make the phosphor resource of recovery cleaner, guaranteed that the phosphor resource that reclaims can be applied to phosphorous chemical industry.
Embodiment two
Present embodiment provides a kind of processing of from excess sludge obtained after municipal sewage, reclaiming phosphorus, is the method for utilizing the treatment system that provides in the foregoing description one that excess sludge is handled, and this method comprises:
Excess sludge obtained after municipal sewage is mixed with the carbon source and the alkali lye that add in mixing pit;
Mud after mixing gets in the anaerobic phosphorus releasing pool, releases phosphorus under whipped state, and the velocity slope of stirring is controlled at≤280S
-1, the residence time of mud in anaerobic phosphorus releasing pool is 4～6 hours;
Supernatant water outlet after the anaerobic phosphorus releasing pool releases phosphorus gets in the sand filter and filters the suspended substance in the filtering supernatant;
Water outlet after sand filter filters gets in the chemical reaction pond, carries out hybrid reaction with the dephosphorization liquid that is added to chemical reaction pond;
The mud mixture of discharging after the chemical reaction pond dephosphorization gets in the settling tank and carries out mud-water separation, and the bottom mud of settling tank gets into sludge thickener, and supernatant effluxes;
Sludge thickener further concentrates the mud that settling tank enters, and the mud after concentrating gets into sludge dewatering equipment and dewaters, and supernatant effluxes;
Mud after the sludge dewatering equipment dehydration reclaims as phosphorus containing sludge fertilizer.
Treatment system below in conjunction with embodiment one provides is described further this treatment process:
The first step: mixing pit; The excess sludge that is sewage work mixes with carbon source that adds and alkali lye in mixing pit, and for the polyP bacteria under the anaerobic condition provides competent carbon source and basicity, mud is unsuitable long in the residence time of mixing pit, prevents the phosphorus of releasing of polyP bacteria;
Second step: anaerobic phosphorus releasing pool; Mixed mud gets into anaerobic phosphorus releasing pool; In certain residence time of anaerobic phosphorus releasing pool inner control, the polyP bacteria in the mud begins a large amount of releases phosphorus, is the phosphorus of releasing of polyP bacteria under the reinforced anaerobic condition; Be provided with whipping device in the anaerobic phosphorus releasing pool; Can improve the phosphorus rate of releasing of polyP bacteria greatly, for guaranteeing the strictly anaerobic condition in the anaerobic phosphorus releasing pool, the velocity slope of stirrer should not be greater than 280S
-1, the supernatant of anaerobic phosphorus releasing pool gets into sand filter, and bottom mud gets into the backflow well and is back to biochemical system;
The 3rd step: sand filter; Be provided with supporting layer in the sand filter, filter material layer can filter the suspended substance from the supernatant that anaerobic phosphorus releasing pool is discharged, and makes the supernatant of rich phosphorus cleaner;
The 4th step: chemical reaction pond; Phosphorous supernatant gets into chemical reaction pond after filtering, and phosphorous supernatant carries out hybrid reaction with the slaked lime breast that adds in chemical reaction pond, be provided with whipping device in the chemical reaction pond, impels slaked lime and phosphorus fully to react;
The 5th step: settling tank; Mud mixture in the chemical reaction pond carries out mud-water separation in settling tank, the supernatant of settling tank drains into the backflow well, gets into biochemical system through the backflow well, and the mud of settling tank bottom gets into sludge thickener;
The 6th step: sludge thickener; The mud of settling tank bottom further concentrates in sludge thickener, and supernatant drains into the backflow well, gets into biochemical system through the backflow well, and the mud after concentrating gets into sludge dewatering equipment;
The 7th step: sludge dewatering equipment; Mud after concentrating dewaters in water extracter, and the starting material that the mud cake after the dehydration can be used as phosphorous chemical industry to the greatest extent carry out reuse, and the water of deviating from is back to the backflow well, gets into biochemical system through the backflow well.
In sum; In the embodiment of the invention through in the treatment system that constitutes by mixing pit, anaerobic phosphorus releasing pool, sand filter, chemical reaction pond, settling tank, sludge thickener and sludge dewatering equipment; Whipping device is set in anaerobic phosphorus releasing pool, compares, improved the phosphorus rate of releasing of mud greatly with traditional anaerobic phosphorus releasing pool; And after anaerobic phosphorus releasing pool, set up sand filter; Solved concentration of suspension problem of higher in the anaerobic phosphorus releasing pool supernatant, made the phosphor resource of recovery cleaner, guaranteed that the phosphor resource that reclaims can be applied to phosphorous chemical industry.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (7)
1. a treatment system that from excess sludge obtained after municipal sewage, reclaims phosphorus is characterized in that, comprising:
Mixing pit, anaerobic phosphorus releasing pool, sand filter, chemical reaction pond, settling tank, sludge thickener and sludge dewatering equipment;
Said mixing pit is connected with anaerobic phosphorus releasing pool, sand filter, chemical reaction pond and settling tank in order; Said mixing pit be provided with carbon source add the inlet with alkali lye add inlet; Be equipped with whipping device in said mixing pit and the anaerobic phosphorus releasing pool, the whipping device in the said anaerobic phosphorus releasing pool is rotating speed gradient≤280S
-1Stirrer; Said chemical reaction pond is provided with dephosphorization agent and adds inlet;
The mud discharging mouth of said settling tank is connected with sludge thickener, and the mud discharging mouth of said sludge thickener is connected with sludge dewatering equipment, and the mud mouth of sludge dewatering equipment is as delivery port.
2. the treatment system that from excess sludge obtained after municipal sewage, reclaims phosphorus as claimed in claim 1 is characterized in that said treatment system also comprises:
Backflow well, this backflow well are connected with the mud discharging mouth of anaerobic phosphorus releasing pool, the water port of settling tank, the water port of sludge thickener and the water port of sludge dewatering equipment respectively, and the water outlet of backflow well is connected to outside biochemical system.
3. the treatment system that from excess sludge obtained after municipal sewage, reclaims phosphorus as claimed in claim 1 is characterized in that, is provided with supporting layer and filter material layer in the said sand filter; Wherein, said supporting layer is made up of avette stone, is positioned at the lowest layer of sand filter, and supporting layer thickness is 400mm; Said filter material layer is made up of silica sand, is arranged on the said supporting layer, and filter material layer thickness is 700mm.
4. the treatment system from excess sludge obtained after municipal sewage recovery phosphorus as claimed in claim 1 is characterized in that, is provided with whipping device in the said chemical reaction pond.
5. a treatment process that from excess sludge obtained after municipal sewage, reclaims phosphorus is characterized in that, comprising:
Adopt aforesaid right to require 1～4 each described treatment system;
Excess sludge obtained after municipal sewage is mixed with the carbon source and the alkali lye that add in mixing pit;
Mud after mixing gets in the anaerobic phosphorus releasing pool, releases phosphorus under whipped state, and the velocity slope of stirring is controlled at≤280S-1, and the residence time of mud in anaerobic phosphorus releasing pool is 4～6 hours;
Supernatant water outlet after the anaerobic phosphorus releasing pool releases phosphorus gets in the sand filter and filters the suspended substance in the filtering supernatant;
Water outlet after sand filter filters gets in the chemical reaction pond, carries out hybrid reaction with the dephosphorization liquid that is added to chemical reaction pond;
The mud mixture of discharging after the chemical reaction pond dephosphorization gets in the settling tank and carries out mud-water separation, and the bottom mud of settling tank gets into sludge thickener, and supernatant effluxes;
Sludge thickener further concentrates the mud that settling tank enters, and the mud after concentrating gets into sludge dewatering equipment and dewaters, and supernatant effluxes;
Mud after the sludge dewatering equipment dehydration is recycled as the phosphorous chemical industry starting material.
6. the treatment process that from excess sludge obtained after municipal sewage, reclaims phosphorus as claimed in claim 5 is characterized in that said method also comprises:
The supernatant that settling tank, sludge thickener and sludge dewatering equipment are discharged is back to biochemical system through the backflow well.
7. the treatment process that from excess sludge obtained after municipal sewage, reclaims phosphorus as claimed in claim 5 is characterized in that the said dephosphorization agent that in chemical reaction pond, adds is a slaked lime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010192017A CN101885571B (en) | 2010-05-26 | 2010-05-26 | Processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010192017A CN101885571B (en) | 2010-05-26 | 2010-05-26 | Processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101885571A CN101885571A (en) | 2010-11-17 |
| CN101885571B true CN101885571B (en) | 2012-10-03 |
Family
ID=43071694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010192017A Expired - Fee Related CN101885571B (en) | 2010-05-26 | 2010-05-26 | Processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101885571B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964032B (en) * | 2012-11-23 | 2014-04-02 | 北京市可持续发展促进会 | Device and method for bypass phosphorus recovery of town sewage treatment plant |
| CN105060640B (en) * | 2015-08-10 | 2017-12-19 | 中国市政工程华北设计研究总院有限公司 | The phosphorus recovery utilized based on carbon source optimizing and strengthened denitrification coupling technique and system |
| CN110228912A (en) * | 2019-07-04 | 2019-09-13 | 西安建筑科技大学 | The source separation removal device of the Phosphorus pollutant of municipal wastewater treatment plant thickened sludge water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361278A (en) * | 2001-06-12 | 2002-12-17 | Hitachi Kiden Kogyo Ltd | Method for removing phosphorus in sludge |
| CN1417142A (en) * | 2001-11-08 | 2003-05-14 | 深圳市中兴环境工程技术有限公司 | Chemically reinforced biological phosphate-eliminating process |
| CN1884151A (en) * | 2006-06-24 | 2006-12-27 | 中国科学技术大学 | Bio-treatment method for dephosphorization and denitrogenation of sewage |
| CN101234839A (en) * | 2008-02-25 | 2008-08-06 | 尹军 | Method for forcedly removing phosphorus in anaerobic digestion sludge liquid phase |
| CN101544453A (en) * | 2009-05-07 | 2009-09-30 | 重庆大学 | Dephosphorization and denitrification, mud decrement and phosphorus recovery integrated sewage treatment device and method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201842745U (en) * | 2010-05-26 | 2011-05-25 | 北京伊普国际水务有限公司 | Treatment system for recovering phosphor from rest sludge after urban sewage treatment |
-
2010
- 2010-05-26 CN CN201010192017A patent/CN101885571B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002361278A (en) * | 2001-06-12 | 2002-12-17 | Hitachi Kiden Kogyo Ltd | Method for removing phosphorus in sludge |
| CN1417142A (en) * | 2001-11-08 | 2003-05-14 | 深圳市中兴环境工程技术有限公司 | Chemically reinforced biological phosphate-eliminating process |
| CN1884151A (en) * | 2006-06-24 | 2006-12-27 | 中国科学技术大学 | Bio-treatment method for dephosphorization and denitrogenation of sewage |
| CN101234839A (en) * | 2008-02-25 | 2008-08-06 | 尹军 | Method for forcedly removing phosphorus in anaerobic digestion sludge liquid phase |
| CN101544453A (en) * | 2009-05-07 | 2009-09-30 | 重庆大学 | Dephosphorization and denitrification, mud decrement and phosphorus recovery integrated sewage treatment device and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101885571A (en) | 2010-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101381156B (en) | Sewage disposal system combining membrane bioreactor and phosphorus recovery and processing method | |
| CN206476860U (en) | A kind of oily waste water treatment reclamation set | |
| CN101381184B (en) | Sewage disposal system with biological phosphorus removal and bypass chemical phosphorus removal and disposal method | |
| CN101654238A (en) | Method for recovering phosphonium compound from phosphorous excess sludge of urban sewage treatment plant | |
| CN205473190U (en) | Pig slaughtering and meat processing waste water reduce discharging regeneration system | |
| CN102964032B (en) | Device and method for bypass phosphorus recovery of town sewage treatment plant | |
| CN103539315A (en) | Printing wastewater treatment equipment and process | |
| CN107265802A (en) | The treatment for cow manure system and processing method of a kind of dairy cow farm | |
| CN110316905A (en) | Processing system for landfill leachate zero-emission in garbage incineration power plant | |
| CN107311308A (en) | A kind of biomembrance process synchronously removes the technique with enriched phosphorus | |
| CN204211607U (en) | A kind of Sewage treatment systems of recyclable crystallization phosphorus | |
| CN110526504B (en) | System and method for treating regenerated waste liquid of targeted denitrification and dephosphorization resin | |
| CN101885571B (en) | Processing system and method for recovering phosphorus from excess sludge obtained after municipal sewage treatment | |
| KR101417277B1 (en) | Device to cohere and to dispose of wastes water | |
| KR101018636B1 (en) | Sewage and wastewater phosphorus removal system and method | |
| CN208829505U (en) | After-treatment system of the Fine Chemistry Wastewater after MVR distills | |
| CN201842745U (en) | Treatment system for recovering phosphor from rest sludge after urban sewage treatment | |
| CN106746004B (en) | Method for treating breeding excrement | |
| CN105461163B (en) | Wet spinning acrylic produces polymeric wastewater processing system and processing method | |
| CN202072591U (en) | Reinforced sludge treatment system of activated sludge sewage treatment process | |
| CN205328795U (en) | Wet spinning acrylic fibres production polymerization effluent disposal system | |
| CN107857443A (en) | A kind of papermaking wastewater processing system | |
| CN208104174U (en) | A kind of processing system of industrial sewage | |
| CN211847575U (en) | Integrated sewage treatment system | |
| KR101141928B1 (en) | A sewage or wastewater treatment apparatus and method using phosphorus collection and recycling coagulant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20190526 |