CN102583937A - Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity - Google Patents
Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity Download PDFInfo
- Publication number
- CN102583937A CN102583937A CN2012100254390A CN201210025439A CN102583937A CN 102583937 A CN102583937 A CN 102583937A CN 2012100254390 A CN2012100254390 A CN 2012100254390A CN 201210025439 A CN201210025439 A CN 201210025439A CN 102583937 A CN102583937 A CN 102583937A
- Authority
- CN
- China
- Prior art keywords
- sludge
- ferrate
- mud
- sewage
- unit
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Treatment Of Sludge (AREA)
Abstract
A novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity comprises the steps that a emical treatment unit effectively removes and converts organic pollutants into inorganic small molecular substance through microorganism in a biochemical treatment system, and the certain sludge concentration in the biochemical treatment unit is maintained; in a sediment unit, sewage produced after the treatment of the biochemical treatment unit enters a secondary sedimentation tank to perform sludge-water separation, a part of subsided sludge is excess sludge, the rest is returned sludge, and two third of returned sludge directly enters the biochemical treatment unit; in a ferrate oxidization treatment unit, one third of returned sludge enters a sludge reaction tank to react with input ferrate for 10-30 minutes, wherein the mass ratio of the ferrate to the excess sludge is 0.2:1; and a sludge dewatering unit performs filter pressing or centrifugal dewatering of the excess sludge. The novel sewage treatment process can reduce 35-45% of excess sludge quantity, has the advantages of being simple in devices, few in investment, free of pollution, convenient to operate and manage, low in operation cost and the like, and is suitable for application of industrial municipal sewage treatment plants.
Description
Technical field
The present invention relates to a kind of sewage treatment process that utilizes ferrate oxidation to make sludge reduction.This technology can reduce the output of excess sludge effectively when purifying waste water, reduce excess sludge subsequent disposal and disposal costs, can be used for industry and city domestic sewage treatment plant (station).
Background technology
Biological sewage treatment method based on active sludge is most widely used in the world at present dirty water living creature processing technique, but there is the drawback of a maximum in it always, can produce a large amount of excess sludges exactly.Along with increasing day by day of sewage quantity and improving constantly of wastewater treatment rate, the sludge yield of a few years from now on China will have significantly and increase progressively.Though sludge quantity only accounts for 1～2% of sewage quantity, it is about 40～50% that the sludge treatment facility investment accounts in the gross investment of entire sewage treatment plant, and the processing of mud and disposal costs generally will account for 30～60% of overall running cost.Sludge disposal is a unit from the past as just WWT, has developed into sewage work's top-priority important step of having to, and the processing of excess sludge has become sewage work's troubling problem in service with disposing.High processing costs and more and more strict restriction property laws and regulations make that the handling problems of excess sludge is serious all the more, the outlet of mud is also narrow increasingly.At present, the operation emphasis of external sewage work turns to minimizing of sludge yield from the high-quality water outlet in past.Optimal solution be develop a kind of " zero release mud " and no bricklayer skill, still and since exist in the mud difficult degradation organic with the inorganic nature material, very difficult the slap-up biological degradation of excess sludge is fallen.Therefore, the method for reality is exactly in WWT, to reduce sludge yield as much as possible.Set about from the source, in sewage treatment process, reduce excess sludge and produce the thinking scheme that meets " green production " and " cleaner production ".Through means such as physics, chemistry, biologies; Decompose (or dissolving) mud solid organic matter; Utilize biology (mainly being mikrobe) these biological organic matters of oxidative degradation in the active sludge again; Can reduce the outside sludge discharged living weight of sewage treatment facility, reach the close-coupled processing purpose of sewage and mud, thus the various drawbacks of having avoided excess sludge " end treatment " to be produced.
Perferrate is a kind of strong oxidizer, and its redox potential is 2.20V, and oxidisability even be higher than ozone under the acidic conditions is enough to oxygenolysis mud, and non-secondary pollution, the Fe that oxidizing reaction produces
3+Be a kind of flocculation agent, can improve the settling property of mud, the oxygen that reaction produces can improve the dissolved oxygen of sewage, promotes aeration.This technology need not existing sewage disposal device is carried out big remodeling, and running cost is lower.
Relate to perferrate and handle the research of mud, domestic have one piece of report: " environmental science " 2011,32 (7): 2019-2022.This research report perferrate can oxydrolysis residual active sludge, when the high ferro dosage is m (Fe)/m (SS)=0.40 μ g/mg, and the SCOD of stripping, NH
4 +-N, TP reach peak.This research report has been described a kind of ferrate oxidation mud method, and final process result is the oxidized hydrolysis of mud, but does not relate to contents such as relevant sewage and sludge treatment technique aspect and sludge yield, WWT usefulness, sludge dewatering.
Summary of the invention
The objective of the invention is to deficiency, a kind of WWT novel method, novel process of utilizing ferrate oxidation to reduce excess sludge production is provided, realize reducing the sludge quantity that sewage biological treatment system produces with lower cost to prior art.
For realizing above-mentioned purpose, the present invention is with sewage biological treatment system (conventional activated sludge process, A
2/ O activated sludge process, oxidation ditch activated sludge process etc.) combine with the ferrate oxidation system; Excess sludge is decomposed with ferrate oxidation; Destroy the cell walls of excess sludge, the excess sludge after the oxidation enters into sewage biological treatment system with the form of organic matter, through the biological degradation of active sludge; With this part organic thoroughly decomposition and inversion is water and carbonic acid gas, thus the sludge quantity that the reduction system is produced.
The sewage treatment technique that utilizes ferrate oxidation to make sludge reduction of the present invention is characterized in that may further comprise the steps:
A, biochemical treatment unit: in biochemical treatment system, effectively remove organic pollutant, organic pollutant is converted into the inorganic molecules material, keep certain sludge concentration in the biochemical unit through mikrobe;
B, precipitation unit: the sewage after biochemical cell processing gets into second pond; Through about 1 hour stop post precipitation, supernatant water was discharged, and a mud part that precipitates is excess sludge; All the other are returned sluge, and wherein 2/3 returned sluge directly gets into biochemical unit;
C, ferrate oxidation processing unit: 1/3 returned sludge gets into the sludge reaction jar; With the ferrate reaction that drops into 10～30 minutes, the dosage of ferrate was that per kilogram sewage sludge solid 0.2g(is that the mass ratio of ferrate and excess sludge is 0.2: 1);
D, sludge dewatering unit: excess sludge adopts press filtration or centrifuge dehydration.
Described biochemical treatment unit is a conventional activated sludge process, adopts complete hybrid aeration tank, and hydraulic detention time is 6 hours, and sludge concentration maintains 4000～4500mg/L.Described biochemical treatment unit is A
2/ O activated sludge process adopts anaerobic pond, anoxic pond and Aerobic Pond, and hydraulic detention time was respectively 2 hours, 2 hours and 6 hours, and sludge concentration maintains 2000～2500mg/L, 2000～2500mg/L and 3000～3500mg/L respectively.
The present invention improves existing activated sludge process, and the technology after the improvement can reduce the output about 35～45% of excess sludge.And owing to produced flocculation agent Fe
3+, it is about 30% that the settling property of mud improves, and avoided the recurrent sludge bulking problem of sewage work.Again because Fe
3+With PO
4 3-Reaction, phosphor-removing effect improves, all the other operating performancies and original activated sludge process of this technology are basic identical.This technology has that equipment is simple, less investment, pollution-free, advantage such as operational management convenient, running cost is low, is fit to industrial sewage and the application of town domestic sewage treatment plant.
Marked improvement of the present invention and advantage are:
(1) not only the mud decrement effect is remarkable, and the settleability of sewage dephosphorization efficient and mud greatly improves.Reduce chemistry and biological phosphate-eliminating expense indirectly, avoided the body eutrophication of phosphorus discharging.The raising of settling property can make the dehydration property of mud improve, and has further reduced the volume and the quality of mud again.
(2) investment is low with running cost.General large-scale wastewater treatment plant carries out Anaerobic Digestion with mud, and the anaerobic sludge digestion treatment facility overwhelming majority of China all is import at present, and the working cost of equipment is expensive, complex management.Novel process of the present invention only needs sludge reaction jar of investment construction, and mud only reacts stop 10～30 minutes in retort; The mud of oxide treatment has only 1/3 of sludge back flow quantity, and jar is little, and construction cost is low; General small sewage treatment plant can bear, and convenient management.Than other strong oxidizers, like ozone, the price of perferrate is lower, and the mud of oxide treatment has only 1/3 of sludge quantity, does not need all mud all to handle, and running cost is low.
(3) environment, three good harvests of society and economy benefit.The medium and small sewage work of China is difficult to carry out anaerobic sludge digestion at present, and is most of just with landfill after the sludge dewatering, and this will cause the whole ecological environment around the landfill and have a strong impact on, thereby the harmony that jeopardizes entire society is stable.The area that are fairly developed economically also have employing to burn, but cost is so high.Novel process of the present invention can reduce excess sludge about 35～45%.General sewage work can reduce by several thousand to several ten thousand tons dewatered sludge every year, sludge treatment with dispose the reason expense annual just can descend millions of units extremely several ten million yuan do not wait (processing cost is guarded in 500 yuan/ton).
Description of drawings
Fig. 1 utilizes ferrate oxidation to make the sewage treatment technique of sludge reduction.
Specific embodiments
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is further described.Following examples do not constitute qualification to technical scheme of the present invention.
Embodiment 1: the sewage biological treatment system that this test is adopted is the laboratory scale conventional activated sludge process that mixes fully, does not have a biological carbon and phosphorous removal function.The aeration tank useful volume is 12.5L, and the settling tank useful volume is 2.2L.Testing apparatus is totally 2 covers, and (COD is 600mg/L, BOD to import the sewage of identical water quality with phase same rate (1.5 liters/hour) to the aeration tank
5Be 260mg/L, total nitrogen concentration is 80mg/L, and ammonia nitrogen concentration is 40mg/L), hydraulic detention time is 6 hours.The aeration tank continuous aeration, the mud mixture in the aeration tank gets into settling tank, and the mud in the settling tank all refluxes and gets in the aeration tank, and sludge concentration in the aeration tank (MLSS) is increased gradually.Treat that sludge concentration in the aeration tank (mixed liquor suspended solid, MLSS MLSS) surpasses 4000mg/L, a part of mud refluxes and gets into the aeration tank, makes that sludge concentration maintains 4000mg/L in the aeration tank, and redundance mud is as excess sludge discharge.Such two covering devices continuously operation to reach stable back in 2 months (be that continuous 15 days of effluent COD concentration is less than 100mg/L; Visual inspection mud flco is obvious; Sludge settling property is good, and sludge volume sedimentation index is less than 100, and microscopy mud finds to occur the protozoon and the metazoan of same type; Like campanularian, ciliate and wheel animalcule etc., expression mud has been cultivated maturation).Then wherein a covering device as contrast; Still continue operation in statu quo; And another set of device adopts the novel sewage treatment process that can reduce excess sludge production of the present invention as testing apparatus, is the process integration that the ferrate oxidation system combines with sewage biological treatment system.1/3 returned sluge gets into a sludge reaction jar, and reacts 10 minutes (mass ratio of potassium ferrate and excess sludge is 0.2: 1) with the potassium ferrate that adds, and reacted mud gets into the aeration tank again.Remaining 2/3 returned sluge directly gets into the aeration tank, and all the other operating parameters all conventional activated sludge process with contrast are identical.After the excess sludge oven dry that two covering devices are discharged, calculate dry weight (gram), the excess sludge dry weight cummulative metering of discharging every day.Operation is 180 days so continuously; Draw 180 days excess sludge total amount; Calculate sludge yield (mud total amount/180 again; Gram/sky), simultaneously at the volume sedimentation index (SVI) of the every water inlet of measuring two covering devices at a distance from three days of run duration and TOC of yielding water concentration, ammonia nitrogen concentration, total phosphorus concentration, mud, with the operation usefulness (being effluent characteristics) of comparison two covering devices and the settling property (seeing table 1) of mud.TOC of yielding water concentration, ammonia nitrogen concentration that the sludge yield of novel process of the present invention reduces by 45%, two covering device than conventional activated sludge process device are much at one.But the tp removal rate of novel process improves 73%, and the traditional technology of the settling property comparison photograph of mud improves 30%.
The operation efficiency ratio of table 12 cover technologies
Embodiment 2: different with embodiment 1 is that sewage biological treatment system adopts A
2/ O activated sludge process has the biological carbon and phosphorous removal function.The useful volume of anaerobic pond and anoxic pond is 2.5L, and the useful volume of Aerobic Pond is 7.5L, and the settling tank useful volume is 3L.Testing apparatus is totally 2 covers, and (COD is 600mg/L, BOD to import the sewage of identical water quality with phase same rate (1.5 liters/hour) to anaerobic pond
5Be 260mg/L, total nitrogen concentration is 80mg/L, and ammonia nitrogen concentration is 40mg/L), hydraulic detention time is 2 hours, sludge concentration is 2500mg/L.The anaerobic pond water outlet gets into anoxic pond, and hydraulic detention time is 2 hours, and sludge concentration is 2500mg/L.The anoxic pond water outlet gets into Aerobic Pond, and hydraulic detention time is 6 hours, and sludge concentration is 3500mg/L; The Aerobic Pond continuous aeration; Mud mixture in the Aerobic Pond gets into settling tank, and the mud part mud in the settling tank refluxes and gets into anaerobic pond, and redundance mud is as excess sludge discharge.Such two covering devices continuously operation to reach stable back in 2 months (be that continuous 15 days of effluent COD concentration is less than 100mg/L; Visual inspection mud flco is obvious; Sludge settling property is good, and sludge volume sedimentation index is less than 100, and microscopy mud finds to occur the protozoon and the metazoan of same type; Like campanularian, ciliate and wheel animalcule etc., expression mud has been cultivated maturation).Then wherein a covering device as contrast; Still continue operation in statu quo; And another set of device adopts the novel sewage treatment process that can reduce excess sludge production of the present invention as testing apparatus, is the process integration that the ferrate oxidation system combines with sewage biological treatment system.1/3 returned sluge gets into a sludge reaction jar, and reacts 30 minutes (mass ratio of potassium ferrate and excess sludge is 0.2: 1) with the potassium ferrate that adds, and reacted mud gets into anaerobic pond again.Remaining 2/3 returned sluge directly gets into anaerobic pond, all the other operating parameters all with the contrast A
2/ O activated sludge process is identical.After the excess sludge oven dry that two covering devices are discharged, calculate dry weight (gram), the excess sludge dry weight cummulative metering of discharging every day.Operation is 180 days so continuously; Draw 180 days excess sludge total amount; Calculate sludge yield (mud total amount/180 again; Gram/sky), simultaneously at the volume sedimentation index (SVI) of the every water inlet of measuring two covering devices at a distance from three days of run duration and TOC of yielding water concentration, ammonia nitrogen concentration, total phosphorus concentration, mud, with the operation usefulness (being effluent characteristics) of comparison two covering devices and the settling property (seeing table 2) of mud.The sludge yield of novel process of the present invention compares A
2The TOC of yielding water concentration of/O activated sludge process device minimizing 35%, two covering device, ammonia nitrogen concentration are much at one.But the tp removal rate of novel process improves 16%, and the settling property of mud and the traditional technology of contrast improve 31%.
The operation efficiency ratio of table 22 cover technologies
Embodiment 3: one days are handled the municipal sewage plants of 200,000 tons of sewages, produce water ratio every day and be 35 tons in 78% mud.Adopt novel sewage treatment process of the present invention, the returned sluge of every day about 1/3rd and potassium ferrate oxidizing reaction (mass ratio of potassium ferrate and mud is 0.2), reacted mud gets into biological treatment system again.The activated sludge process of the comparable original employing of surplus sludge volume reduces 40%, and then annual waste sludge generation can reduce 5000 tons.Deduction increases the construction cost (about 300,000 yuan) of mud storage tank and respective line and pump in the construction cost, and deduction adds the expense of potassium ferrate and the energy charge of pump ((ten thousand yuan/year of 15-20) approximately in the working cost.If mud adopts Anaerobic Digestion, then investment cost can reduce nearly 8,000,000 yuan, and the processing of annual mud just can reduce about 300,000 yuan with disposal reason expense.If mud adopts filter-press dehydration to handle the back landfill, then investment cost can reduce nearly 4,000,000 yuan, and annual the processing with disposal costs can be reduced about 200,000 yuan.If mud burns after adopting filter-press dehydration to handle, then investment cost can reduce by nearly 4,000,000 yuan (not considering the construction cost of incinerator), and annual the processing with disposal costs can be reduced about 2,500,000 yuan.And the pollution hazard to environment that reduces therefrom, be difficult to estimate with money.
Claims (7)
1. utilize ferrate oxidation to make the sewage treatment technique of sludge reduction, it is characterized in that may further comprise the steps:
(1) biochemical treatment unit: in biochemical treatment system, effectively remove organic pollutant, organic pollutant is converted into the inorganic molecules material, keep certain sludge concentration in the biochemical treatment unit through mikrobe;
(2) precipitation unit: the sewage after the biochemical treatment cell processing gets into second pond; Through about 1 hour stop post precipitation, supernatant water was discharged, and a mud part that precipitates is excess sludge; All the other are returned sluge, and wherein 2/3 returned sluge directly gets into the biochemical treatment unit;
(3) ferrate oxidation processing unit: 1/3 returned sludge gets into the sludge reaction jar; With the ferrate reaction that drops into 10～30 minutes, the dosage of ferrate was that per kilogram sewage sludge solid 0.2g(is that the mass ratio of ferrate and excess sludge is 0.2: 1);
(4) sludge dewatering unit: excess sludge adopts press filtration or centrifuge dehydration.
2. novel process according to claim 1, it is characterized in that mud and perferrate solid react 10～30 minutes in the sludge reaction jar after, get into again in the biochemical treatment unit.
3. novel process according to claim 1, the mass ratio that it is characterized in that perferrate and excess sludge is 0.2: 1.
4. novel process according to claim 1 is characterized in that the perferrate in the novel process, can be potassium ferrate, also can be Na2Fe04.
5. novel process according to claim 1 is characterized in that 1/3 the returned sluge oxide treatment through perferrate.
6. novel process according to claim 1 is characterized in that the sewage biological treatment system in the novel process can be based on any treatment system of active sludge, conventional activated sludge process, A
2/ O activated sludge process, oxidation ditch activated sludge process etc. all can.
7. novel process according to claim 1 is characterized in that original biochemical treatment unit and second pond all remain unchanged, and the sludge reaction jar is arranged in the mud return-flow system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100254390A CN102583937A (en) | 2012-01-16 | 2012-01-16 | Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100254390A CN102583937A (en) | 2012-01-16 | 2012-01-16 | Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102583937A true CN102583937A (en) | 2012-07-18 |
Family
ID=46473293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100254390A Pending CN102583937A (en) | 2012-01-16 | 2012-01-16 | Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102583937A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217790A (en) * | 2015-11-09 | 2016-01-06 | 杨鹏 | Sewage treatment systems |
| CN105254152A (en) * | 2015-11-09 | 2016-01-20 | 杨鹏 | Method for treating sludge in sewage treatment plant through ferrate |
| CN105417698A (en) * | 2015-11-09 | 2016-03-23 | 杨鹏 | Sewage treatment system |
| CN105800893A (en) * | 2016-05-17 | 2016-07-27 | 上海电力学院 | Sludge reduction system using potassium ferrate oxidation and application thereof |
| CN106396308A (en) * | 2016-10-27 | 2017-02-15 | 环境保护部华南环境科学研究所 | Excess activated sludge recycling method |
| CN106698651A (en) * | 2015-07-28 | 2017-05-24 | 江苏吉华化工有限公司 | Chemical wastewater treatment method |
| CN106830158A (en) * | 2016-10-27 | 2017-06-13 | 环境保护部华南环境科学研究所 | Iron containing compoundses activated sludge and its application in estrogen in removing sewage |
| CN108383236A (en) * | 2018-03-30 | 2018-08-10 | 哈尔滨工业大学 | A method of microorganism flco is activated to improve cohesion and dephosphorization performance using ferrate |
| CN110054364A (en) * | 2019-05-24 | 2019-07-26 | 刘树立 | A kind of sewage water treatment method and sewage disposal system |
| WO2019200775A1 (en) * | 2018-04-20 | 2019-10-24 | 李思琦 | Wastewater circulating cleaning treatment method capable of reducing sludge amount |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09122682A (en) * | 1995-10-30 | 1997-05-13 | Ebara Corp | Method for treating waste water |
| CN101503237A (en) * | 2009-03-18 | 2009-08-12 | 南京大学 | Chemical reagent combination and use thereof in sharp separation and water quality purification |
| CN101565262A (en) * | 2009-06-04 | 2009-10-28 | 同济大学 | Combined pre-treatment method for improving sludge disintegration effect and strengthening subsequent anaerobic digestion |
-
2012
- 2012-01-16 CN CN2012100254390A patent/CN102583937A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09122682A (en) * | 1995-10-30 | 1997-05-13 | Ebara Corp | Method for treating waste water |
| CN101503237A (en) * | 2009-03-18 | 2009-08-12 | 南京大学 | Chemical reagent combination and use thereof in sharp separation and water quality purification |
| CN101565262A (en) * | 2009-06-04 | 2009-10-28 | 同济大学 | Combined pre-treatment method for improving sludge disintegration effect and strengthening subsequent anaerobic digestion |
Non-Patent Citations (1)
| Title |
|---|
| 王丽，王琳，张宏媛等: "高铁酸盐污泥减量对SBF工艺运行效能的影响", 《PROCEEDINGS OF 2010 FIRST INTERNATIONAL CONFERENCE ON CELLULAR,MOLECULAR BIOLOGY, BIOPHYSICS AND BIOENGINEERING》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698651A (en) * | 2015-07-28 | 2017-05-24 | 江苏吉华化工有限公司 | Chemical wastewater treatment method |
| CN105254152A (en) * | 2015-11-09 | 2016-01-20 | 杨鹏 | Method for treating sludge in sewage treatment plant through ferrate |
| CN105417698A (en) * | 2015-11-09 | 2016-03-23 | 杨鹏 | Sewage treatment system |
| CN105217790A (en) * | 2015-11-09 | 2016-01-06 | 杨鹏 | Sewage treatment systems |
| CN105800893A (en) * | 2016-05-17 | 2016-07-27 | 上海电力学院 | Sludge reduction system using potassium ferrate oxidation and application thereof |
| CN106830158A (en) * | 2016-10-27 | 2017-06-13 | 环境保护部华南环境科学研究所 | Iron containing compoundses activated sludge and its application in estrogen in removing sewage |
| CN106396308A (en) * | 2016-10-27 | 2017-02-15 | 环境保护部华南环境科学研究所 | Excess activated sludge recycling method |
| CN106396308B (en) * | 2016-10-27 | 2019-12-31 | 环境保护部华南环境科学研究所 | Recycling method of residual activated sludge |
| CN106830158B (en) * | 2016-10-27 | 2019-12-31 | 环境保护部华南环境科学研究所 | Iron-containing compound activated sludge and application thereof in removing estrogen in sewage |
| CN108383236A (en) * | 2018-03-30 | 2018-08-10 | 哈尔滨工业大学 | A method of microorganism flco is activated to improve cohesion and dephosphorization performance using ferrate |
| CN108383236B (en) * | 2018-03-30 | 2022-02-11 | 哈尔滨工业大学 | Method for improving coagulation and dephosphorization performance by activating microbial flocs with ferrate |
| WO2019200775A1 (en) * | 2018-04-20 | 2019-10-24 | 李思琦 | Wastewater circulating cleaning treatment method capable of reducing sludge amount |
| CN110054364A (en) * | 2019-05-24 | 2019-07-26 | 刘树立 | A kind of sewage water treatment method and sewage disposal system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102583937A (en) | Novel sewage treatment process utilizing ferrate oxidization to reduce sludge quantity | |
| Li et al. | Advanced treatment of landfill leachate by a new combination process in a full-scale plant | |
| CN101993169B (en) | Treatment method of sintering flue gas desulphurization wastewater | |
| CN102276107B (en) | Acrylic fiber sewage treatment technology through PHAOB method | |
| CN102225825B (en) | Zero-energy-consumption enhanced AB (adsorption-biodegradation) treatment method for urban sewage | |
| CN101759338B (en) | Method for reducing biological sludge by using ozone oxidation | |
| CN102910788A (en) | Deep denitrification process for wastewater | |
| CN105668929A (en) | Dyeing wastewater treatment and recycling technical system | |
| CN102515446B (en) | BCM (Biology Cilium Magnetic) biological sewage treatment system and BCM biological sewage treatment process | |
| CN102086075A (en) | Deep treatment process of landfill leachate | |
| CN112960859A (en) | Sewage treatment system and method for upgrading and transforming urban sewage plant | |
| CN102329057A (en) | Method for treating high concentration ammonia nitrogen landfill leachate | |
| CN105800871A (en) | Method for treating refuse leachate membrane-concentrated liquid by using ozone advanced oxidation | |
| CN102616979B (en) | Treatment method for surface treatment liquid wastewater of metal processing | |
| CN102531313A (en) | Method for treating sludge and promoting reduction of sludge by using ferrate | |
| CN110526518A (en) | A kind of non-membrane treating method of anaerobic digestion of kitchen wastes waste water | |
| CN111847764A (en) | Method for treating printing and dyeing wastewater based on catalytic oxidation of ozone | |
| CN101659502A (en) | Method for treating waste leachate by utilizing high denitrification shared type Orbal oxidation ditch | |
| CN104261561A (en) | Sequencing batch reactor activated sludge process (SBR) with low yield of sludge and low energy consumption | |
| CN101962248A (en) | Treatment method for biological total nitrogen removal | |
| CN101891352A (en) | Ultrasonic-assisting nitrogen and phosphorus removing process | |
| CN219194742U (en) | Low-energy-consumption sewage treatment system | |
| CN103539322A (en) | Method for removing nitrogen and phosphorus from sewage and special equipment for implementing method | |
| CN215102679U (en) | Sewage treatment system that standard transformation was carried in town sewage factory | |
| RU189953U1 (en) | INSTALLATION FOR BIOLOGICAL PURIFICATION OF COMMUNAL WASTEWATER FROM NITROGEN AND Phosphorus compounds |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |