CN202297323U - System utilizing metazoan to strengthen in-situ sludge reduction - Google Patents
System utilizing metazoan to strengthen in-situ sludge reduction Download PDFInfo
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- CN202297323U CN202297323U CN2011203706916U CN201120370691U CN202297323U CN 202297323 U CN202297323 U CN 202297323U CN 2011203706916 U CN2011203706916 U CN 2011203706916U CN 201120370691 U CN201120370691 U CN 201120370691U CN 202297323 U CN202297323 U CN 202297323U
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- 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
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- 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
- Y02W10/20—Sludge processing
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a system utilizing metazoan to strengthen in-situ sludge reduction, which is sequentially provided with an anaerobic zone (6), an anoxic zone (7), an aerobic zone (8), a metazoan growth zone (9) and a secondary sedimentation zone (10). A water inlet pump (1), a valve (2), a flowmeter (3) and the anaerobic zone (6) are sequentially connected, and submersible mixers (4) are respectively arranged in the anaerobic zone (6) and the anoxic zone (7). The bottom parts of the aerobic zone (8) and the metazoan growth zone (9) are respectively provided with an aeration system (11), and the aeration systems (11) are connected with an air blower (5). The sludge reduction effect of the system is above 80 percent. The system not only can be used for sludge reduction of new wastewater treatment engineering but also can be used for reform of old engineering, and the reform cost is very low.
Description
Technical field
The utility model relates to biotechnology and field of environment engineering technology, relates in particular to a kind of metazoan reinforcement sludge original position abatement system of utilizing.
Background technology
The sludge quantity that municipal sewage treatment produces is big, and processing cost is high, is prone to produce secondary pollution.At present sludge treatment is with to utilize technology also at the early-stage in China, in the existing sewage work in the whole nation, supporting have the sludge treatment facility less than 1/10th.The sewage work of most city has only accomplished separating of water and solids, mud do not handled, let alone recycling, a lot of local sludge treatment modes are exactly to dig a hole on the outskirts of a town to have buried in fact, even directly pour in the river.In recent years, be on the increase because of the secondary pollution incident that mud causes various places, causes being discontented with of the masses.If things go on like this, halfway pollution treatment mode will make the sewage work of protection environment become heavy polluter.Following 10 years, municipal sludge harmless treatment and recycling will become the new environmental protection investments major fields of China.Therefore, research reduces the mud generation significantly in sewage treatment process, and it is significant to reduce the sludge disposal expense.
In China, owing to funds and technical reason, mud does not still have stable and rational outlet at present, and total situation is main with landfill, stacking still.There is data to show, in the sewage work that builds up, do not have the auxiliary facility of sludge treatment more than 50%,,, directly jeopardize HUMAN HEALTH and cause second environmental pollution because abuse mud causes heavy metal, Organic pollutants and disease and pest etc. in some places.China enacted and enforced " pollutent control criterion in the agricultural mud " (GB4284-84) in 1984, this for mud agricultural standardization play certain standardization role.China had issued " the urban wastewater treatment firm sludge treatment is disposed and the contamination preventing technical policy " in 2009; Clear and definite urban wastewater treatment firm sludge treatment disposal technology developing direction and engineering philosophy instruct various places to carry out the research and development of urban wastewater treatment firm sludge treatment disposal technology and apply, and promote engineering construction and operational management; Avoid secondary pollution; Protection and improving the ecological environment promotes energy-saving and emission-reduction and sludge reduction, recycling, with playing positive pushing effect.
The activated sludge process biologic process for treating sewage is widely used in China's municipal effluent and Industrial Wastewater Treatment with efficient outstanding advantage.Yet along with improving constantly of wastewater treatment rate, effective disposal of a large amount of excess sludges of its generation become also that we have to face is stubborn problem very.By the end of 2009 the end of the year whole nation add up 3136 municipal sewage plants altogether, 11163.2 ten thousand tons of daily handling abilities of design.China's town sewage in 2009 is handled the mud that produces water ratio 80% and is about 2,184 ten thousand tons (5.99 ten thousand ton per days), and wherein 2,066 ten thousand tons at city and county town (5.66 ten thousand ton per day) account for 95% of mud generation.The sludge treatment cost accounts for 40% ~ 60% of WWT total cost.If annual wastewater treatment rate increases progressively by the speed of 6-7%, expect sludge discharge in 2015 and will reach 3,560 ten thousand tons.Compare so huge sludge yield, China's mud of nearly 55.7% does not at present obtain stabilizing treatment.Therefore, how rationally to dispose sewage plant sludge, the problem of outlet that solves city sludge has become very urgent task.
According to the difference of mud decrement know-why, the decrement research of the excess sludge that both at home and abroad biological wastewater treatment is produced mainly concentrates on 3 aspects: (l) technological based on the mud decrement of uncoupling growth; Comprise and add uncoupling agents, aerobic-deposition-anaerobic technique (OSA) etc.; (2), comprise that physical chemistry dissolves born of the same parents, the biological born of the same parents of dissolving technology based on the recessive growth excess sludge reduction technology of cytolysis (or decomposition); (3) utilize the residual sludge reduction of microfauna microorganism predation technological, like metazoal predation.What these technical application property were bigger is last type.
Carrying out the decrement of excess sludge from the source, guaranteeing that WWT reaches under the prerequisite of emission standard requirement, reduce the generation and the quantity discharged of excess sludge as far as possible, is the direction of WWT Sustainable development.The various mud decrement technology of current research all have certain mud decrement effect, but each have their own relative merits.Adopt physics, chemical process decrement, its investment is big, energy consumption is high; Adopt microorganism predation effect decrement, its biological species is difficult to control; Adopt energy uncoupling effect decrement, its water inlet and processing condition require high.In a word, current sludge reduction technology also mainly is in the exploratory development stage, formally drop into industrial applications also seldom, still need further research sludge reduction mechanism and improve existing minimizing technology.Technology more with practical value is on the basis that does not change original technology at present; Utilize biological method; Enhancement microbiological oxidative degradation and miniature metazoan predation; Enhanced biological group symbiotic reproduction each other concerns, improves the physico-chemical property of active sludge, finally reaches the purpose of mud decrement.
Utilize the predation of microfauna reduce excess sludge production low as a kind of energy consumption, do not produce the ecological engineering technology of secondary pollution, more and more receive scholars' concern.It is mainly the use of protozoa (? Ciliates, flagellates, etc.)?, Metazoan (? Erythema Piao insect body, trembling earthworm, volume and other shellfish)? Well as flies and other small animals to prey on bacteria in activated sludge and sludge fragments,? and these foods through their intestine a certain degree of mineralization,? thereby reducing production of sludge remaining in the system.Then lively thing has the ability of the mud decrement stronger than other biological as the maximum biology of build in the sludge treating system.Therefore, utilize miniature metazoan to carry out the focus that mud decrement becomes Recent study.
Summary of the invention
The purpose of the utility model provides a kind of metazoan reinforcement sludge original position abatement system of utilizing.
Utilize metazoan to strengthen active sludge original position abatement system and comprise that intake pump, valve, under meter, diving mixer, gas blower, anaerobic zone, oxygen-starved area, aerobic zone, metazoan vitellarium, two heavy districts, aerating system, two heavy district sludge reflux pumps, metazoan cultivation add groove, mud scraper, rising pipe, mixed solution internal reflux pump, mixed solution internal reflux pipe and sludge pipe; Anaerobic zone, oxygen-starved area, aerobic zone, metazoan vitellarium, two heavy districts are set in order; Intake pump, valve, under meter, anaerobic zone link to each other in order; Be respectively equipped with diving mixer in anaerobic zone, the oxygen-starved area; Aerobic zone and bottom, metazoan vitellarium are respectively equipped with aerating system; Aerating system links to each other with gas blower; The metazoan vitellarium is supporting to be provided with metazoan and to cultivate and add groove and link to each other with the metazoan vitellarium; Mixed solution internal reflux pump links to each other with oxygen-starved area, bottom, metazoan vitellarium through mixed solution internal reflux pipe, and the outlet of top, metazoan vitellarium links to each other with two heavy district bottom inlet, and two heavy district outlet at bottoms link to each other with anaerobic zone, oxygen-starved area, aerobic zone bottom respectively through sludge pipe through two heavy district sludge reflux pumps; Be provided with mud scraper in the two heavy districts, top, two heavy districts is provided with rising pipe.
The utility model has the advantages that:
(1) this process structure concision and compact, the operation operational management is convenient, takes up an area of less, is prone to realize full automatic control;
(2) process function is distinguished and to be cut clearly, is easy to form food chain, helps the original position decrement of mud.And do not influence wastewater treatment efficiency;
(3) add and regularly add metazoan, reinforcement sludge original position decrement effect, the mud mud production rate reduces more than 50% on year-on-year basis;
(4) investment for trnasforming urban land is low, and running cost is economized, convenient management;
(5) this technology both can be used for the mud decrement of newly-built sewage treatment project, also can be used for building the transformation of engineering.
Description of drawings
Accompanying drawing 1 is the process flow sheet of the utility model.
Embodiment
As shown in Figure 1, utilize metazoan to strengthen active sludge original position abatement system and comprise intake pump 1, valve 2, under meter 3, diving mixer 4, gas blower 5, anaerobic zone 6, oxygen-starved area 7, aerobic zone 8
,Metazoan vitellarium 9, two heavy districts 10, aerating system 11, two heavy district sludge reflux pumps 12, metazoan are cultivated and add groove 13, mud scraper 14, rising pipe 15, mixed solution internal reflux pump 16, mixed solution internal reflux pipe 17 and sludge pipe 18; Anaerobic zone 6, oxygen-starved area 7, aerobic zone 8,9, two heavy districts 10, metazoan vitellarium are set in order; Intake pump 1, valve 2, under meter 3, anaerobic zone 6 link to each other in order; Be respectively equipped with diving mixer 4 in anaerobic zone 6, the oxygen-starved area 7; Aerobic zone 8 is respectively equipped with aerating system 11 with 9 bottoms, metazoan vitellarium; Aerating system 11 links to each other with gas blower 5, and metazoan vitellarium 9 is supporting to be provided with metazoan and to cultivate and add groove 13 and link to each other with metazoan vitellarium 9, and mixed solution internal reflux pump 16 passes through mixed solution internal reflux pipe 17 and links to each other with oxygen-starved area 7,9 bottoms, metazoan vitellarium; The outlet of 9 tops, metazoan vitellarium links to each other with two heavy districts, 10 bottom inlet; Two heavy districts, 10 outlet at bottoms link to each other with anaerobic zone 6, oxygen-starved area 7, aerobic zone 8 bottoms respectively through sludge pipe 18 through two heavy district sludge reflux pumps 12, are provided with 10 tops, mud scraper 14, two heavy districts in the two heavy districts 10 and are provided with rising pipe 15.
Strengthening active sludge original position decrement process with metazoan is: sewage gets into anaerobic zone 6 through promoting intake pump 1 through valve 2 under meters 3; The mud that also has warp two heavy districts 10 sludge reflux pumps 12 to reflux and come that gets into synchronously; Establish diving mixer 4 in the district and stir sewage and mud; Making the sewage sludge thorough mixing, is releases phosphorus as far as the major function of this reaction zone of sewage, and partial organic substances is carried out ammonification simultaneously.To industrial sewage, anaerobism mainly is to improve the biodegradability of waste water, reduces the concentration of sewage, alleviates follow-up aerobic load, can clear up part mud simultaneously; The water outlet of anaerobic zone 6 gets into oxygen-starved area 7, the internal reflux mixed solution that 9 mixed solution internal reflux pumps 16 reflux and come through the metazoan vitellarium in addition that gets into synchronously.The major function of oxygen-starved area 7 is to consume returned sluge and contained dissolved oxygen and the nitre attitude oxygen of mixed solution; Heterotrophic bacterium utilizes the nitric nitrogen that carries in the returned sluge as electron acceptor(EA); Carry out quick denitrification; Guarantee the abundant release of next stage anaerobic zone phosphorus, guarantee that simultaneously total nitrogen concentration reduces significantly in the waste water; Oxygen-starved area 7 muddy water mixed solutions get in the aeration aerobic reactor zone 8, the mud that also has warp two heavy districts 10 sludge reflux pumps 12 to reflux and come that gets into synchronously.Mixed solution in the aerobic zone charges into air through gas blower 5 and aerating system 11; Airborne oxygen is absorbed by the aerobic microbiological in the sewage; The mikrobe organic pollutant in the mixed solution of in process of growth, degrading simultaneously; And mikrobe can make the ammonia nitrogen generation nitration reaction in the waste water under aerobic condition, generates nitrate salt; The muddy water mixed solution of aerobic zone 8 gets in the metazoan vitellarium 9; Mixed solution charges into air through gas blower 5 and aerating system 11, and airborne oxygen is absorbed by the aerobic microbiological in the sewage, and mikrobe is the organic pollutant in the further simultaneously degraded mixed solution in process of growth; This district's organic content is low; Help mikrobe and under aerobic condition, can make the ammonia nitrogen generation nitration reaction in the waste water, generate nitrate salt, nitrite, strengthened nitrification; Metazoan vitellarium 9 has a large amount of wheel animalcules, nematode metazoan to exist, and is food with tiny mikrobe and organic particulate matter, reduces sludge quantity significantly, thereby reaches the purpose of mud decrement; Mixed solution in the metazoan vitellarium 9 is back to oxygen-starved area 7 through internal reflux pump 16, and reflux ratio is: 2.0～3.0Q, water-out manners are continuous effluent, and sewage flows into two heavy districts 10 through rising pipe; Two heavy districts 10 flow into two heavy districts, 10 back mud-water separation with sewage in the metazoan vitellarium 9, and part mud is squeezed into anaerobic zone 6, oxygen-starved area 7 and aerobic zone 8 through return sludge pump 12, excess sludge decontamination mud treatment system, and two heavy districts, 10 supernatants efflux.
The applications of strengthening active sludge original position decrement process with metazoan is in A
2The biological treatment of/O, A/O, SBR, CASS, MSBR, oxidation ditch, MBR or bio-carrier.
Embodiment 1:
The waste water that gets into technology is printing and dyeing type industrial sewage, and dyeing and printing sewage water quality is pH:9～11, CODcr:750～1200mg/l, NH
3-N:15～30mg/l, TP:2～6mg/l, water temperature is 35～40 ℃, the water yield is 4000m
3/ d, sewage treatment process are A/O+SBR, and the oxygen-starved area residence time is 4h, and the aerobic zone residence time is 16h, adopt activated sludge process, add metazoan at aerobic zone and strengthen predation, and with this understanding, the mud decrement effect reaches more than 80%.
Embodiment 2:
The sewage of one urban wastewater treatment firm, CODcr:120～280mg/l, ammonia nitrogen: 20～30mg/l, TN:30～40mg/l, TP:2～5mg/l, SS:100～300mg/l.Sewage adopts A
2/ O-second pond art breading, anaerobic zone stops 2h, and the oxygen-starved area residence time is 3h, and the aerobic zone residence time is 10h; Through add groove by a certain percentage (0.1%～0.3%) add metazoan to Aerobic Pond, the mud decrement effect reaches more than 70%.
Claims (1)
1. one kind is utilized metazoan to strengthen active sludge original position abatement system; It is characterized in that comprising that intake pump (1), valve (2), under meter (3), diving mixer (4), gas blower (5), anaerobic zone (6), oxygen-starved area (7), aerobic zone (8), metazoan vitellarium (9), two heavy district (10), aerating systems (11), two heavy district sludge reflux pumps (12), metazoan cultivate and add groove (13), mud scraper (14), rising pipe (15), mixed solution internal reflux pump (16), mixed solution internal reflux pipe (17) and sludge pipe (18); Anaerobic zone (6), oxygen-starved area (7), aerobic zone (8), metazoan vitellarium (9), two heavy districts (10) are set in order; Intake pump (1), valve (2), under meter (3), anaerobic zone (6) link to each other in order; Be respectively equipped with diving mixer (4) in anaerobic zone (6), oxygen-starved area (7); Aerobic zone (8) and metazoan vitellarium (9) bottom are respectively equipped with aerating system (11); Aerating system (11) links to each other with gas blower (5); Metazoan vitellarium (9) is supporting to be provided with metazoan and to cultivate and add groove (13) and link to each other with metazoan vitellarium (9); Mixed solution internal reflux pump (16) links to each other with oxygen-starved area (7), metazoan vitellarium (9) bottom through mixed solution internal reflux pipe (17); The outlet of top, metazoan vitellarium (9) links to each other with two heavy district (10) bottom inlet; Two heavy district (10) outlet at bottoms link to each other with anaerobic zone (6), oxygen-starved area (7), aerobic zone (8) bottom respectively through sludge pipe (18) through two heavy district's sludge reflux pumps (12); Be provided with mud scraper (14) in the two heavy districts (10), (10) top, two heavy districts is provided with rising pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203706916U CN202297323U (en) | 2011-09-28 | 2011-09-28 | System utilizing metazoan to strengthen in-situ sludge reduction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203706916U CN202297323U (en) | 2011-09-28 | 2011-09-28 | System utilizing metazoan to strengthen in-situ sludge reduction |
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| Publication Number | Publication Date |
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| CN202297323U true CN202297323U (en) | 2012-07-04 |
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| CN2011203706916U Expired - Lifetime CN202297323U (en) | 2011-09-28 | 2011-09-28 | System utilizing metazoan to strengthen in-situ sludge reduction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372405A (en) * | 2011-09-28 | 2012-03-14 | 浙江环科环境研究院有限公司 | System and process for sludge in situ decrement enhanced by utilizing metazoan and application of process |
| CN102897912A (en) * | 2012-09-12 | 2013-01-30 | 浙江省环境保护科学设计研究院 | System and method for sludge reduction by using lateral bioreactor |
| CN106045203A (en) * | 2016-06-30 | 2016-10-26 | 北京中大立信环境技术有限责任公司 | LSP sludge reduction biological treatment system and water treatment method thereof |
| CN107857445A (en) * | 2017-12-18 | 2018-03-30 | 北京建筑大学 | Labyrinth form mud decrement biological treatment device and its method for treating water |
-
2011
- 2011-09-28 CN CN2011203706916U patent/CN202297323U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102372405A (en) * | 2011-09-28 | 2012-03-14 | 浙江环科环境研究院有限公司 | System and process for sludge in situ decrement enhanced by utilizing metazoan and application of process |
| CN102897912A (en) * | 2012-09-12 | 2013-01-30 | 浙江省环境保护科学设计研究院 | System and method for sludge reduction by using lateral bioreactor |
| CN106045203A (en) * | 2016-06-30 | 2016-10-26 | 北京中大立信环境技术有限责任公司 | LSP sludge reduction biological treatment system and water treatment method thereof |
| CN107857445A (en) * | 2017-12-18 | 2018-03-30 | 北京建筑大学 | Labyrinth form mud decrement biological treatment device and its method for treating water |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
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| CX01 | Expiry of patent term |