CN101585652A - Acrylonitrile-acrylon integrative production waste water processing method and processing apparatus - Google Patents
Acrylonitrile-acrylon integrative production waste water processing method and processing apparatus Download PDFInfo
- Publication number
- CN101585652A CN101585652A CNA2009100878636A CN200910087863A CN101585652A CN 101585652 A CN101585652 A CN 101585652A CN A2009100878636 A CNA2009100878636 A CN A2009100878636A CN 200910087863 A CN200910087863 A CN 200910087863A CN 101585652 A CN101585652 A CN 101585652A
- Authority
- CN
- China
- Prior art keywords
- reactor
- aerobic reactor
- aerobic
- oxygen
- oxygen reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention embodiment provides an acrylonitrile-acrylon integrative production waste water processing apparatus, belonging to the waste water processing filed. The apparatus comprises a regulating reservoir, a facultative reactor, a aerobic reactor, a secondary deposition pool, a coagulation reactor, a coagulating sedimentation pool, a reflow pump, a pipeline, a fan and a regulation valve; the regulating reservoir is provided with a sewage water inlet, a water outlet of the regulating reservoir is communicated with the facultative reactor, the aerobic reactor, the secondary deposition pool, the coagulation reactor and the coagulating sedimentation pool by pipelines in order, the coagulating sedimentation pool is equipped with a water outlet of water reaching to the standard and an excessed sludge discharge outlet; the lower end of the aerobic reactor is provided with a mixed liquid reflow port and an air inlet, the mixed liquid reflow port is returned to connected to the reflow port of the facultative reactor water inlet end by the pipelines and the reflow pump, the air inlet is connected with the fan by the pipelines and the regulation valve; the lower end of the secondary deposition pool is equipped with the sludge discharge outlet, the sludge discharge outlet is returned to connected to the reflow port of the facultative reactor by the pipelines for reflowing sludge and the other reflow pump. The processing apparatus has stabilized operation and low processing costs.
Description
Technical field
The present invention relates to field of waste water treatment, relate in particular to a kind of acrylonitrile-acrylon integrative production waste water processing method and treatment facility.
Background technology
Vinyl cyanide is a kind of important chemical material, domestic many be operational path production with propylene-oxidation proceses of ammonia, it is many that production vinyl cyanide and two step wet spinning technologies are produced the contaminated wastewater thing that acrylic fibers produced, contain vinyl cyanide, oligopolymer, acetonitrile, succinonitrile, propenal, pollutents such as acetone cyanohydrin, methyl acrylate, acrylamide, dimethyl formamide, prussiate, Sodium Thiocyanate 99, most of pollutents are toxic to human body, discharge capacity is big, are one of high pollution and more unmanageable trade effluent.Treatment technology to the comprehensive factory effluent of vinyl cyanide-acrylic fibers has both at home and abroad: physico-chemical process, biochemical process and materialization and the biochemical method that combines.Wherein biological method mainly contains catalytic oxidation, A-O technology etc., but these treatment process generally cause Pollutant Treatment inefficiencies such as this wastewater through organic matter and ammonia nitrogen because of process parameters design is unreasonable, be difficult to reach the design objective requirement.
Summary of the invention
Based on above-mentioned existing in prior technology problem, the embodiment of the invention provides a kind of acrylonitrile-acrylon integrative production waste water processing method and treatment facility, has stablely, and convenient management makes the COD of vinyl cyanide-acrylic fibers comprehensive wastewater after the processing
CrWith NH
3-N has reached primary standard in the national sewage comprehensive emission standard (GB8978-1996).
The embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of vinyl cyanide-acrylic fibers comprehensive production wastewater treatment equipment, comprising:
Equalizing tank, hold concurrently oxygen reactor, aerobic reactor, second pond, coagulation reactor, coagulative precipitation tank, reflux pump, pipeline, blower fan and variable valve;
Equalizing tank is provided with sewage inlet, and the water outlet of equalizing tank is communicated with by the road with double oxygen reactor, aerobic reactor, second pond, coagulation reactor and coagulative precipitation tank successively, and coagulative precipitation tank is provided with water water outlet up to standard and excess sludge relief outlet;
The aerobic reactor lower end is provided with mixed-liquor return mouth and inlet mouth, and the mixed-liquor return mouth is connected to the refluxing opening of the oxygen reactor feed-water end of holding concurrently by pipeline and backflow blowback, and inlet mouth is connected with blower fan with variable valve by pipeline;
The second pond lower end is provided with the mud relief outlet, pipeline and another the backflow blowback refluxing opening that be connected to hold concurrently oxygen reactor of this mud relief outlet by returned sluge.
The embodiment of the invention provides a kind of acrylonitrile-acrylon integrative production waste water processing method, comprising:
The comprehensive factory effluent of handled vinyl cyanide-acrylic fibers enters equalizing tank, in equalizing tank, mix with the sanitary sewage that adds, the water outlet of equalizing tank enters the hydrolysis reaction of hold concurrently oxygen reactor generation organism and prussiate, the anti-nitration reaction of concurrent caliche hydrochlorate and nitrite is hydrolyzed and denitrification denitrogenation, and the oxygen reactor water outlet of holding concurrently enters the oxidizing reaction of the nitrated and prussiate that organic oxidation, ammonia nitrogen take place in the aerobic reactor and removes COD
Cr, ammonia nitrogen and prussiate, the aerobic reactor water outlet is carried out coagulating sedimentation through second pond, coagulation reaction tank and coagulative precipitation tank and is handled the COD that further removes in the waste water
Cr, NH
3-N and prussiate, the water up to standard after the processing is discharged through the water water outlet up to standard of coagulative precipitation tank, and the excess sludge in the coagulative precipitation tank is discharged from the mud relief outlet of coagulative precipitation tank.
The technical scheme that is provided by the invention described above embodiment as can be seen, match with aerobic reactor, coagulation reaction tank and coagulative precipitation tank by the double oxygen reactor that is provided with in the embodiment of the present invention, can in the oxygen reactor of holding concurrently, carry out the hydrolysis reaction of organism and prussiate to the comprehensive factory effluent of handling of vinyl cyanide-acrylic fibers, and the anti-nitration reaction of nitrate and nitrite is realized hydrolysis and denitrification denitrogenation, the oxidizing reaction removal COD of the nitrated and prussiate of the organic oxidation of generation, ammonia nitrogen in aerobic reactor
Cr, ammonia nitrogen and prussiate, the aerobic reactor water outlet enters second pond and carries out mud-water separation, handles the COD that further removes in the waste water after coagulation reaction tank and coagulative precipitation tank carry out coagulating sedimentation
Cr, NH
3-N and prussiate make the COD that handles the back water outlet
Cr, NH
3-N and total cyanogen concentration reach the primary standard of national sewage comprehensive emission standard (GB8978-1996), ammonia nitrogen even reach below the 5mg/l, utilizing this equipment water treatment working cost per ton is about 6.5 yuan, and this treatment facility has the characteristics stable, that processing cost is low.
Description of drawings
The comprehensive production wastewater treatment device structure of the vinyl cyanide-acrylic fibers synoptic diagram that Fig. 1 provides for the embodiment of the invention one;
The comprehensive production wastewater treatment device structure of the vinyl cyanide-acrylic fibers synoptic diagram that Fig. 2 provides for the embodiment of the invention two;
Each parts label is among the figure:
1, equalizing tank; 2, double oxygen reactor; 21, double oxygen reactor one; 22, double oxygen reactor two; 11, the divider wall in the double oxygen reactor; 111, the connected entrance on the divider wall in the double oxygen reactor; 20, agitator; 201, agitator one; 21, dividing wall; 211, the connected entrance on the dividing wall; 3, aerobic reactor one; 4, aerobic reactor two; 31, divider wall; 311, the connected entrance on the divider wall; 5, second pond; 6, coagulation reactor; 61, coagulation agitator; 7, coagulative precipitation tank; 8, reflux pump one; 81, the pipeline of backflow mixed liquor; 9, the pipeline of returned sluge; 10, reflux pump two; A, sewage inlet; B, medicine add inlet; C, water water outlet up to standard; The excess sludge relief outlet of D, coagulative precipitation tank; The mud relief outlet of E, second pond; 40, blower fan; 401, variable valve one; 402, variable valve two; 403, blow-off valve.
Embodiment
For ease of understanding, the invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment one
Present embodiment one provides a kind of vinyl cyanide-acrylic fibers comprehensive production wastewater treatment equipment, be used for the comprehensive factory effluent of vinyl cyanide-acrylic fibers is handled, make water outlet reach corresponding national standards, be that a kind of oxygen reactor and aerobic reactor of will holding concurrently built the treatment facility that is structure as a whole jointly, as shown in Figure 1, this equipment comprises:
Equalizing tank 1, the oxygen reactor 2 of holding concurrently, aerobic reactor, second pond 5, coagulation reactor 6, coagulating sedimentation device 7, reflux pump one, 28,10, pipeline, blower fan 40, variable valve one, 2 401,402 and blow-off valve 403;
Equalizing tank 1 is provided with sewage inlet A, the water outlet of equalizing tank 1 is communicated with by the road with double oxygen reactor 2, aerobic reactor, second pond 5, coagulation reactor 6 and coagulating sedimentation device 7 successively, and coagulating sedimentation device 7 is provided with water water outlet C up to standard and excess sludge relief outlet D;
The aerobic reactor lower end is provided with mixed-liquor return mouth and inlet mouth, pipeline 81 and the reflux pump refluxing opening that one 8 time be connected to hold concurrently oxygen reactor 2 feed-water ends of mixed-liquor return mouth by backflow mixed liquor is used for mixed-liquor return with water outlet side in the aerobic reactor to the oxygen reactor 2 of holding concurrently;
The inlet mouth of aerobic reactor lower end is connected with blower fan 40 by pipeline and variable valve one, 2 401,402, and inlet mouth is provided with blow-off valve with the main pipe rail that blower fan 40 links to each other, and is used for adding in aerobic reactor required air;
In aforesaid device, the oxygen reactor 2 of holding concurrently is built jointly with aerobic reactor and is structure as a whole, be provided with dividing wall 21 in it, be divided into two portions by dividing wall 21, the influent side of dividing wall 21 partly is the oxygen reactor 2 of holding concurrently, the water outlet side of dividing wall 21 partly is an aerobic reactor, and dividing wall 21 is provided with connected entrance 211, and the connected entrance 211 by dividing wall 21 makes the oxygen reactor 2 of holding concurrently be communicated with aerobic reactor.
Aerobic reactor is provided with medicine and adds inlet B, is used for adding alkali lye and nutritive salt to aerobic reactor, and medicine adds the upper end of inlet B mouth operated by rotary motion at aerobic reactor 1; The mixed-liquor return mouth of aerobic reactor can be arranged on the lower end or a side of aerobic reactor 24; In aerobic reactor 1 and aerobic reactor 24 aerating apparatus is set all, aerating apparatus is by aerator, and pipeline and variable valve one, 2 401,402 are connected with blower fan 40.
In aforesaid device,, in the oxygen reactor 2 of can holding concurrently agitator 20 is set for waste water that guarantee to handle and the mixed solution of backflow, the mixed effect of mud; For guaranteeing coagulation effect, can in the coagulation reaction tank 6 coagulation agitator 61 be set.
The method of using above-mentioned treatment facility that the comprehensive factory effluent of vinyl cyanide-acrylic fibers is handled, specifically undertaken by following step:
The comprehensive factory effluent of handled vinyl cyanide-acrylic fibers enters equalizing tank, mixes with the sanitary sewage adjusting that adds in equalizing tank, and COD reaches 800-1000mg/l;
The water outlet of equalizing tank enters the hydrolysis reaction of hold concurrently oxygen reactor generation organism and prussiate, the anti-nitration reaction of concurrent caliche hydrochlorate and nitrite is hydrolyzed and denitrification denitrogenation, the temperature of reaction of double oxygen reactor is 38 ℃～41 ℃, and sludge concentration is 4.0～5.0g/l; Such treatment condition can guarantee to realize smoothly the hydrolytic action of microorganism to organism and prussiate in the double oxygen reactor, and denitrifying bacterium reaches the purpose of final denitrification with nitrate reduction;
The oxygen reactor water outlet of holding concurrently enters the oxidizing reaction of the nitrated and prussiate that organic oxidation, ammonia nitrogen take place in the aerobic reactor and removes COD
Cr, ammonia nitrogen and prussiate, the temperature of reaction of aerobic reactor is 38 ℃-41 ℃;
Hold concurrently oxygen reactor and aerobic reactor is non-single the mixing fully or the reactor of plug-flow, is mixed type;
The water outlet of aerobic reactor enters coagulation reaction tank and carries out coagulating behind second pond, the hydraulic detention time in the coagulation reaction tank is 10～20min, and waste water enters and carries out coagulating sedimentation with coagulative precipitation tank and further remove COD in the waste water behind the coagulation
Cr, NH
3-N and prussiate, the excess sludge that coagulative precipitation tank and second pond produce is transported outward behind mechanical dehydration, and water up to standard is discharged by the water water outlet up to standard of coagulative precipitation tank.
In the above-mentioned treating processes, separate the main decarburizing reaction that takes place in the aerobic reactor one of back as influent side in the aerobic reactor, the nitration reaction of the ammonia nitrogen of small part takes place simultaneously, the part decarburizing reaction takes place in the main nitration reaction that ammonia nitrogen takes place simultaneously in the aerobic reactor two of aerobic reactor as water outlet side; In the reaction process, the oxygen reactor dissolved oxygen content DO that controls well is 1.0～2.2mg/l, and controls by add liquid caustic soda in aerobic reactor one that the pH value of waste water is a weakly alkaline in the oxygen reactor well.
In the above-mentioned treating processes, the mixed solution in the aerobic reactor is back in the oxygen reactor of holding concurrently by pipeline and reflux pump one and carries out circulating reaction, and the return current ratio of the mixed liquid of aerobic reactor backflow mixed liquor is 150%～250%; The part mud that second pond is discharged is back to another reflux pump by the road and carries out the mud backflow in the oxygen reactor of holding concurrently.
In the above-mentioned treating processes, also comprise the step that adds coagulating agent in coagulation reaction tank, the consumption that adds coagulating agent is 1000mg/l～1500mg/l.
Utilize this treatment facility to handle the comprehensive factory effluent of vinyl cyanide-acrylic fibers, the ammonia nitrogen of water outlet is reached below the 5mg/l, and the COD in the water outlet
Cr, NH
3-N and total cyanogen concentration reach the primary standard of national sewage comprehensive emission standard (GB8978-1996), and utilizing this equipment water treatment working cost per ton is about 6.5 yuan, and therefore, this treatment facility has the advantage stable, that processing cost is low.
Embodiment two
Present embodiment two provides a kind of vinyl cyanide-acrylic fibers comprehensive production wastewater treatment equipment, be that a kind of will hold concurrently oxygen reactor and aerobic reactor branch are built the treatment facility into minute body structure, as shown in Figure 2, the treatment facility structure that provides in this equipment and the foregoing description one is basic identical, different is with the double oxygen reactor of this equipment and aerobic reactor builds and is a minute body structure, and the water side of the oxygen reactor of holding concurrently is communicated with aerobic reactor by pipeline.Simultaneously in double oxygen reactor 2, divider wall 11 is set, to hold concurrently by divider wall 11 and to be divided into two portions in the oxygen reactor 2, divider wall 11 influent sides partly are the oxygen reactor 1 of holding concurrently, divider wall 11 water outlet sides partly are the oxygen reactor 2 22 of holding concurrently, divider wall 11 is provided with connected entrance 111, by this connected entrance 111 oxygen reactor 1 of holding concurrently is communicated with double oxygen reactor 2 22.For making the mud in hold concurrently oxygen reactor 1 and the double oxygen reactor 2 22 be in suspended state, in double oxygen reactor 1 and double oxygen reactor 2 22, agitator 20 and agitator 1 are set respectively.Other structure and the embodiment one of this treatment facility are basic identical, can be referring to embodiment one, in this no longer repeat specification.
The treatment facility of present embodiment is basic identical to the treatment process and the embodiment one of the comprehensive factory effluent of vinyl cyanide-acrylic fibers, and concrete treating processes can also no longer repeat at this referring to the description among the embodiment one.
The treatment facility of this structure, oxygen reactor and aerobic reactor branch are built owing to will hold concurrently, make construction more convenient, help adapting to sewage treatment project place needs, and when this treatment facility was handled the comprehensive factory effluent of vinyl cyanide-acrylic fibers, the oxygen reactor inside of holding concurrently was separated into two sections, the separating with rich poly-of help holding concurrently oxygen and anaerobion, improve the reaction efficiency of microorganism and reactor, and then improve the removal efficient of pollutent.
Can know, in the treatment facility that the foregoing description one provides, double oxygen reactor also can adopt the identical structure of double oxygen reactor of the treatment facility that provides with embodiment two, gather with separating of anaerobion to help double oxygen with rich, improve microbial reaction efficient, and then improve the removal efficient of pollutent.And, in the treatment facility that embodiment two provides, double oxygen reactor also can adopt with embodiment one in the identical structure of double oxygen reactor that provides, to reduce the complexity of equipment.To the treatment facility of these two kinds of structures in this no longer repeat specification.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; the present invention is not caused any restriction because of the succession of each embodiment yet; anyly be familiar with those skilled in the art 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 (10)
1, the comprehensive production wastewater treatment equipment of a kind of vinyl cyanide-acrylic fibers is characterized in that, comprising:
Equalizing tank, hold concurrently oxygen reactor, aerobic reactor, second pond, coagulation reactor, coagulative precipitation tank, reflux pump, pipeline, blower fan and variable valve;
Equalizing tank is provided with sewage inlet, and the water outlet of equalizing tank is communicated with by the road with double oxygen reactor, aerobic reactor, second pond, coagulation reactor and coagulative precipitation tank successively, and coagulative precipitation tank is provided with water water outlet up to standard and excess sludge relief outlet;
The aerobic reactor lower end is provided with mixed-liquor return mouth and inlet mouth, and the mixed-liquor return mouth is connected to the refluxing opening of the oxygen reactor feed-water end of holding concurrently by pipeline and backflow blowback, and inlet mouth is connected with blower fan with variable valve by pipeline;
The second pond lower end is provided with the mud relief outlet, pipeline and another the backflow blowback refluxing opening that be connected to hold concurrently oxygen reactor of this mud relief outlet by returned sluge.
2, the comprehensive production wastewater treatment equipment of a kind of vinyl cyanide-acrylic fibers according to claim 1, it is characterized in that, described double oxygen reactor and aerobic reactor are structure as a whole, be provided with dividing wall in it, be divided into two portions by dividing wall, the influent side of dividing wall partly is the oxygen reactor of holding concurrently, and the water outlet side of dividing wall partly is an aerobic reactor, dividing wall is provided with connected entrance, and the connected entrance by dividing wall makes the oxygen reactor of holding concurrently be communicated with aerobic reactor.
3, the comprehensive production wastewater treatment equipment of a kind of vinyl cyanide-acrylic fibers according to claim 1 is characterized in that, described double oxygen reactor and aerobic reactor are for dividing body structure, and the water side of the oxygen reactor of holding concurrently is communicated with aerobic reactor by pipeline.
4, according to the comprehensive production wastewater treatment equipment of each described a kind of vinyl cyanide-acrylic fibers in the claim 1,2 or 3, it is characterized in that, described double oxygen reactor inside is provided with divider wall, divider wall will be held concurrently and will be divided into hold concurrently oxygen reactor one and double oxygen reactor two two portions in the oxygen reactor, divider wall is provided with connected entrance, and the connected entrance by divider wall makes hold concurrently oxygen reactor one and two connections of double oxygen reactor.
5, a kind of Treatment of Coking Effluent equipment according to claim 4 is characterized in that, is equipped with agitator in described double oxygen reactor one and the double oxygen reactor two.
6, according to the comprehensive production wastewater treatment equipment of each described a kind of vinyl cyanide-acrylic fibers in the claim 1,2 or 3, it is characterized in that, be provided with divider wall in the described aerobic reactor, divider wall will be divided into two portions in the aerobic reactor, the divider wall influent side partly is an aerobic reactor one, the divider wall water outlet side partly is an aerobic reactor two, and divider wall is provided with connected entrance makes aerobic reactor one be communicated with aerobic reactor two.
7, the comprehensive production wastewater treatment equipment of a kind of vinyl cyanide-acrylic fibers according to claim 6 is characterized in that, described aerobic reactor is provided with medicine and adds inlet, and medicine adds the upper end that inlet is arranged on aerobic reactor one; The mixed-liquor return mouth of described aerobic reactor is arranged on aerobic reactor two lower ends; Described aerobic reactor one and aerobic reactor two lower ends are equipped with inlet mouth, and two inlet mouths are connected with blower fan with variable valve by pipeline respectively.
8, a kind of acrylonitrile-acrylon integrative production waste water processing method is characterized in that, comprising:
The comprehensive factory effluent of handled vinyl cyanide-acrylic fibers enters equalizing tank, in equalizing tank, mix with the sanitary sewage that adds, the water outlet of equalizing tank enters the hydrolysis reaction of hold concurrently oxygen reactor generation organism and prussiate, the anti-nitration reaction of concurrent caliche hydrochlorate and nitrite is hydrolyzed and denitrification denitrogenation, and the oxygen reactor water outlet of holding concurrently enters the oxidizing reaction of the nitrated and prussiate that organic oxidation, ammonia nitrogen take place in the aerobic reactor and removes COD
Cr, ammonia nitrogen and prussiate, the aerobic reactor water outlet is carried out coagulating sedimentation through second pond, coagulation reaction tank and coagulative precipitation tank and is handled the COD that further removes in the waste water
Cr, NH
3-N and prussiate, the water up to standard after the processing is discharged through the water water outlet up to standard of coagulative precipitation tank, and the excess sludge in the coagulative precipitation tank is discharged from the mud relief outlet of coagulative precipitation tank.
9, a kind of acrylonitrile-acrylon integrative production waste water processing method according to claim 8, it is characterized in that described treatment process further comprises: the mixed solution that discharge the aerobic reactor lower end is back in the oxygen reactor of holding concurrently by pipeline and reflux pump and carries out circulating reaction; The part mud that second pond is discharged is back to another reflux pump by the road and carries out the mud backflow in the oxygen reactor of holding concurrently.
10, a kind of acrylonitrile-acrylon integrative production waste water processing method according to claim 8 is characterized in that, in the described treatment process,
The temperature of reaction of double oxygen reactor is 38 ℃～41 ℃, and sludge concentration is 4.0～5.0g/l;
The temperature of reaction of aerobic reactor is 38 ℃～41 ℃, and sludge concentration is 4.0～5.0g/l;
The step that also comprises the coagulating agent that adds in coagulation reactor, the consumption of coagulating agent are 1000mg/l～1500mg/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100878636A CN101585652A (en) | 2009-06-24 | 2009-06-24 | Acrylonitrile-acrylon integrative production waste water processing method and processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100878636A CN101585652A (en) | 2009-06-24 | 2009-06-24 | Acrylonitrile-acrylon integrative production waste water processing method and processing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101585652A true CN101585652A (en) | 2009-11-25 |
Family
ID=41370110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100878636A Pending CN101585652A (en) | 2009-06-24 | 2009-06-24 | Acrylonitrile-acrylon integrative production waste water processing method and processing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101585652A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228763A (en) * | 2011-05-27 | 2011-11-02 | 云南大红山管道有限公司 | Concentration tank overflow sewage treatment device |
| CN102249492A (en) * | 2011-06-20 | 2011-11-23 | 北京桑德环境工程有限公司 | Processing method of lamivudine wastewater |
| CN105271605A (en) * | 2014-07-11 | 2016-01-27 | 中国石油化工股份有限公司 | Acrylonitrile wastewater treatment method |
| CN110723862A (en) * | 2018-07-16 | 2020-01-24 | 中国石油化工股份有限公司 | Method for improving removal effect of ammonia nitrogen and total nitrogen in acrylonitrile sewage |
-
2009
- 2009-06-24 CN CNA2009100878636A patent/CN101585652A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228763A (en) * | 2011-05-27 | 2011-11-02 | 云南大红山管道有限公司 | Concentration tank overflow sewage treatment device |
| CN102228763B (en) * | 2011-05-27 | 2013-09-25 | 云南大红山管道有限公司 | Concentration tank overflow sewage treatment device |
| CN102249492A (en) * | 2011-06-20 | 2011-11-23 | 北京桑德环境工程有限公司 | Processing method of lamivudine wastewater |
| CN102249492B (en) * | 2011-06-20 | 2012-12-26 | 北京桑德环境工程有限公司 | Processing method of lamivudine wastewater |
| CN105271605A (en) * | 2014-07-11 | 2016-01-27 | 中国石油化工股份有限公司 | Acrylonitrile wastewater treatment method |
| CN105271605B (en) * | 2014-07-11 | 2017-08-29 | 中国石油化工股份有限公司 | The processing method of acrylic nitrile waste water |
| CN110723862A (en) * | 2018-07-16 | 2020-01-24 | 中国石油化工股份有限公司 | Method for improving removal effect of ammonia nitrogen and total nitrogen in acrylonitrile sewage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101381185B (en) | Denitrification processing method of coking wastewater and processing arrangement | |
| CN102897979B (en) | Treatment method of coking waste water | |
| CN103130379B (en) | Processing method of coking steaming ammonia wastewater | |
| CN102030410B (en) | Improved magnetic powder high concentration activated sludge process for sewage treatment | |
| CN201962168U (en) | System for strengthening denitrification and dephosphorization effects of A2/O process | |
| US20170066668A1 (en) | Highly effective sewage treatment based on regulation and control of directed electron flow and apparatus thereof | |
| CN105417687A (en) | Method and device for performing combined treatment on sewage and bottom mud in black-odor riverway | |
| CN105461174A (en) | Method for removing high ammonia nitrogen from pig farm dry manure cleaning livestock wastewater | |
| CN108298762A (en) | A kind of combination SNAD techniques and bioreactor expose oneself the method for gas denitrogenation dephosphorizing | |
| CN108101310B (en) | Device and method for treating desulfurization and denitrification wastewater of thermal power plant | |
| CN201932988U (en) | Anaerobic/aerobic contact oxidation membrane bioreactor | |
| CN102259981B (en) | Sequencing batch biological phosphorus and nitrogen removal process | |
| CN110642478A (en) | Coupled treatment system and method for coking phenol-cyanogen wastewater by biochemical method and physicochemical method | |
| CN101585652A (en) | Acrylonitrile-acrylon integrative production waste water processing method and processing apparatus | |
| CN103663875A (en) | Method for improving denitrification rate of acrylonitrile waste water | |
| CN210711151U (en) | Device of high difficult waste water is handled to fragrant MBR of combining of iron carbon | |
| CN105984991B (en) | A kind of sewerage advanced treatment process | |
| CN111606510A (en) | Heterogeneous Fenton-polyurethane carrier immobilized microorganism wastewater treatment system and method | |
| CN204689844U (en) | A kind of novel denitrogenation dephosphorizing Sewage treatment systems | |
| CN101580330A (en) | Coking waste water processing method and processing equipment | |
| CN101830601A (en) | Biological treatment system and method thereof specific to industrial wastewater of fluorescent brightener | |
| CN212425594U (en) | System for realizing anaerobic ammonia oxidation denitrification of low-ammonia-nitrogen wastewater by using side anaerobic high-pH and FA to inhibit NOB | |
| CN212387804U (en) | Integrated multi-combination type anoxic-aerobic wastewater biological denitrification device | |
| CN210193608U (en) | Livestock and poultry breeding biogas slurry treatment system | |
| CN114314838A (en) | Formic acid inhibition type semi-shortcut nitrification coupled sulfenyl autotrophic nitrogen removal process device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20091125 |