CN101671103A - Contact type tubificidae sludge decrement reactor and application thereof - Google Patents
Contact type tubificidae sludge decrement reactor and application thereof Download PDFInfo
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- CN101671103A CN101671103A CN200910152977A CN200910152977A CN101671103A CN 101671103 A CN101671103 A CN 101671103A CN 200910152977 A CN200910152977 A CN 200910152977A CN 200910152977 A CN200910152977 A CN 200910152977A CN 101671103 A CN101671103 A CN 101671103A
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
Abstract
The invention provides a contact type tubificidae sludge decrement reactor and an application thereof. The reactor consists of a contact decrement area, an aeration stirring area and a sludge discharging area. One end of the reactor is provided with a sludge inlet port, two-thirds width area of the reactor is the contact decrement area, elastic fillers are hung, and tubificidae is inoculated and cultured; one-third width area of the reactor is the aeration stirring area, an aerator is arranged at the position being apart from 0.3m of a bottom plate, the sludge discharging area is arranged at the lower part of the contact decrement area; and a sludge pipe is arranged at the position being apart form 0.1m of the bottom plate and connected with a sludge discharging port; and the other end corresponding to the sludge discharging port is provided with a decanter which is connected with a water outlet. The operation method of the reactor is as follows: the periodical circulating operation ofsludge inlet-contact and aeration-precipitation-sludge discharging/water discharging is conducted according to a certain time sequence. In the invention, the adoption of the contact type tubificidaesludge decrement reactor based on the ingestion of the tubificidae can be used for processing the residual sludge generated by sewage treatment plants, and realize the purpose of sludge decrement.
Description
Technical field
The invention belongs to environmental technology field, relate to a kind of reactor and application thereof of sludge treatment technique, be specially a kind of contact type tubificidae sludge decrement reactor and application thereof, utilize the ingest principle of mud of Limnodrilus hoffmeisteri, design a kind of reactor that higher concentration mud is degraded, reach the environmental protection purpose that reduces excess sludge discharge.
Background technology
Urban sewage treatment process generally adopts activated sludge process, but the main drawback of activated sludge process promptly produces a large amount of excess sludges, and the processing of excess sludge is the difficult point problem that current environment is administered.Burning is the final selection that present European countries handle mud, yet its cost makes this method be difficult to promote, and the mud decrement technology of research and development low-consumption high-efficiency is present advanced subject both domestic and external.Utilizing the predation minimizing excess sludge of microfauna is current very effective sludge biodegrading improvement method, and caused increasing concern (Huang X et al, 2007), find after deliberation, microfauna can produce different mud decrement effects according to the difference of its kind and ambient condition of living in.Ratsak etc. (1994) have carried out the technical study of two-part microorganism predation reactor mud decrement the earliest, and find that the carbon that enters in the predation reactor has 22%-43% to generate CO through mineralization
2, excess sludge production can reduce 12%.People such as Lee adopt the predation reactor for treatment synthetic sewage of microbial film as subordinate phase, and the discovery sludge yield is 0.05～0.17gSS/gCOD, reduce 30%～50% than traditional method.Usefulness when Ghyoot etc. (2000) have compared traditional active sludge system (CAS) and membrane-biological membrane reactor system (MBR) as predation reactor for treatment synthetic sewage is found that the latter lacks than the former to produce 20%～30% sludge quantity.Wei Yuan send etc. (2004; 2005) worm mud decrement effect in the membrane bioreactor has been carried out research and found that also minimizing has remarkable effect to Limnodrilus hoffmeisteri for sludge yield.Rensink etc. drop into tubificid discovery excess sludge production and reduce to 0.15gMLSS/gCOD from 0.4gMLSS/gCOD in the Sludge System that contains plastic carrier, sludge volume index (SVI) also has decline simultaneously, and the dewatering of mud has raising.
Along with further developing of economy, the quantity of sewage work also progressively increases, and the output of excess sludge also grows with each passing day, and its handling problem receives publicity day by day, and the mud decrement technology will further develop.The technology of utilizing microfauna to carry out mud decrement is to realize the green technology of mud watershed management, is the most economical feasible method that present excess sludge problem solves, and has bright development prospect.And the technical scale application of this technology and process exploitation thereof still need further further investigation.
The common invention of handling has " Limnodrilus hoffmeisteri-microorganism symbiotic system muddy degradation batch reactor and application thereof " (application for a patent for invention number 20091099944.8) at sewage sludge, and " Limnodrilus hoffmeisteri-microorganism symbiotic system muddy degradation continuous flow reactor and application thereof " (application for a patent for invention number 200910099943.3).Above-mentioned two related reactors of invention have all comprised two-part structure " sludge decrement reactor " and " sewage DeR device ".Wherein whole uniform distribution fillers are bred Limnodrilus hoffmeisteri in the sludge decrement reactor, oxygen in water is provided by the aerating apparatus (variable micro-hole aerator) that is distributed in the whole reactor bottom, current are in unsettled turbulent state, cause Limnodrilus hoffmeisteri skewness on filler, and the ovum of Limnodrilus hoffmeisteri can flow out " sludge decrement reactor " with water, therefore need return-flow system be set at " sewage DeR device ", influenced the Limnodrilus hoffmeisteri growth, weaken the ability of mud decrement, be applicable to the sewage sludge synchronous processing of lower concentration (MLSS2000mg/L).
Summary of the invention
The present invention is in order to improve the ability of mud decrement in the sewage treatment process, make the effectively high density excess sludge of degradation of sewage treatment plant generation of treatment facility, as come from the mud of second pond concentration average out to 4000-6000mg/L, the object of the present invention is to provide a kind of contact type tubificidae sludge decrement reactor and application art thereof, contact type tubificidae sludge decrement technology of the present invention can be applicable to the processing of urban wastewater treatment firm excess sludge, especially is applicable to the technological transformation of building the sludge of sewage treatment plant decrement.
The invention provides the contact type tubificidae sludge decrement reactor and the working method thereof that are connected in sewage work's aerating system second pond excess sludge relief outlet.
Contact type tubificidae sludge decrement reactor of the present invention, described mud are the mud that sewage work's aerating system second pond is discharged, and reactor is formed an open cuboid container by contact decrement area 1, aeration stirring area 2 and sludge discharging area 3; Side in open cuboid container upper end is provided with mud inlet 4, accounts for the contact decrement area 1 of cuboid container 2/3 capacity region in the cuboid container by mud inlet 4 end settings, hangs elastic filler 5 in the contact decrement area 1, inoculation Limnodrilus hoffmeisteri 6 in the elastic filler 5; Cuboid container 1/3 capacity region in addition is an aeration stirring area 2, and the 0.3m place is provided with aerator 7 on the base plate of cuboid container; The contact decrement area bottom is a sludge discharging area 3, at distance base plate 0.1m place shore pipe 10 is set, and is connected with mud discharging mouth 11; Hydrophone 8 is strained in a side setting relative with mud inlet 4, connects water outlet 9.
The using method of contact type tubificidae sludge decrement reactor of the present invention is: according to concrete processing requirement certain time sequence is set and carries out the operation of " advance mud---contact aeration---precipitation---spoil disposal/water outlet " loop cycle, concrete operations are: when mud enters described reactor by mud inlet 4, aerator 7 beginning air feed, stop into mud after 1～2 hour, continue to keep aeration and whipped state, mud decrement gradually under the effect of the Limnodrilus hoffmeisteri in the elastic filler 56 stops aeration behind the contact aeration operation certain hour and precipitates in short-term; Discharge supernatant liquor by straining hydrophone 8 from water outlet 9 after precipitation is finished, bottom sludge discharging area 3 is discharged mud.
The elastic filler 5 of hanging in the described contact decrement area 1 is the polypropylene fibre strand.
Huo Fu Limnodrilus that the described Limnodrilus hoffmeisteri that is suspended in the elastic filler 5 is a Tubificidae and positive tubificid belong to.
The aerator that aeration stirring area 2 is provided with apart from base plate 0.3m place is: 45 ° in Φ 4 holes are oblique following, the both sides staggered arrangement, and air velocity 5m/s eats dishes without rice or wine.
Described in the using method of reactor of the present invention " advance mud---contact aeration---precipitation---spoil disposal/water outlet " the loop cycle operation, its certain time sequence is: advanced mud 1～2 hour, contact aeration 20～21 hours precipitates 1 hour, spoil disposal/water outlet 1 hour.
Reactor of the present invention is connected in sewage work's aerating system second pond mud relief outlet, directly admits mud, carries out decrement treatment.
The present invention program is further described below:
The contact type tubificidae sludge decrement reactor that the present invention adopts is a kind of contact aerobic reactor of having inoculated Limnodrilus hoffmeisteri, as shown in Figure 1.Form by contact decrement area 1, aeration stirring area 2 and sludge discharging area 3.At reactor one end mud inlet 4 is set, reactor 2/3 width regions is a contact decrement area, hangs elastic filler 5, and inoculation culture Limnodrilus hoffmeisteri 6 in the elastic filler, the Limnodrilus hoffmeisteri of inoculation mainly are with the Huo Fu Limnodrilus of Tubificidae and positive tubificid genus etc.; Reactor 1/3 width regions aeration stirring area is provided with aerator 7 at distance base plate 0.3m place, and 45 ° in Φ 4 holes are oblique following, the both sides staggered arrangement, and air velocity 5m/s eats dishes without rice or wine; The contact decrement area bottom is a sludge discharging area, at distance base plate 0.1m place shore pipe 10 is set, and is connected with mud discharging mouth 11; Hydrophone 8 is strained in the other end setting relative with mud inlet 2, links to each other with water outlet 9.
The Limnodrilus hoffmeisteri sludge decrement reactor working method that the present invention adopts is carried out " advance mud---contact aeration---precipitation---spoil disposal/water outlet " loop cycle according to certain time sequence and is moved.Specifically comprise following process: excess sludge is entered in the reactor by mud inlet 4, and the aerator that is positioned at aeration stirring area simultaneously begins air feed, stops into mud after 1～2 hour, advances the end of mud stage; Continue aeration and enter the contact aeration stage, under the aeration agitation effect, mud mixed liquid is made the circulation movement (see figure 1) in reactor, guarantees the required dissolved oxygen of Limnodrilus hoffmeisteri existence on the one hand, supply with the Limnodrilus hoffmeisteri predation that inhabits in the elastic filler on the other hand, thereby reach the purpose of mud decrement; Stopping aeration behind the contact aeration operation certain hour precipitates in short-term; Discharge supernatant liquor by straining hydrophone after precipitation process is finished, discharge mineralising mud by the bottom sludge discharging area simultaneously and enter the next cycle operation again.Its timed interval is: advance mud 1～2 hour, contact aeration 20～21 hours, precipitation 1 hour, spoil disposal/water outlet 1 hour.
Contact aeration is meant under the aeration stirring area air feed state, because the stirring action of air is brought mud in the contact decrement area into a kind of running status that contacts with Limnodrilus hoffmeisteri.
Aeration agitation is meant the aeration state in the aeration zone, plays stirring action simultaneously.
Optimal control Limnodrilus hoffmeisteri mud of the present invention ingest environment and working method utilize Limnodrilus hoffmeisteri the effect of ingesting of excess sludge to be reached the purpose of mud decrement.The present invention is arranged on the excess sludge relief outlet of sewage work's aerating system second pond with contact type tubificidae sludge decrement reactor, as shown in Figure 2.Excess sludge directly enters contact type tubificidae sludge decrement reactor of the present invention and handles, and the supernatant liquor that post precipitation is discharged is back to the preceding road of Sewage Plant art breading, and the mineralising mud of discharging after the decrement is made follow-up processed.
Excess sludge reduction index of the present invention is:
(1) excess sludge reduction rate: the excess sludge reduction rate 36% of municipal sewage treatment.
(2) Limnodrilus hoffmeisteri excess sludge ingestion ability :～0.4gTSS/g Limnodrilus hoffmeisteri d;
(3) the sludge index SVI 58 of reactor mixed solution;
(4) MLVSS/MLSS of stabilization mud is 0.36～0.38.
Because present many sewage works have produced a large amount of mud and can't realize by transforming its sewage treatment process equipment, need additional equipment that mud is carried out individual curing, the present invention is directed to this problem and propose contact type tubificidae sludge decrement reactor and application thereof, be exclusively used in the processing of sewage work's high density excess sludge, independent mutually with sewage treatment process, not to sewage treatment process generation effect, use easy.
Description of drawings
Fig. 1 contact type tubificidae sludge decrement reactor synoptic diagram.Fig. 2 contact type tubificidae sludge decrement process flow sheet.
Be denoted as among the figure:
1. contact decrement area 7. aerators
2. aeration stirring area 8. is strained hydrophone
3. sludge discharging area 9. water outlets
4. mud inlet 10. shore pipes
5. elastic filler 11. mud discharging mouths
6. Limnodrilus hoffmeisteri
Embodiment
1. the preparation of sludge decrement reactor
Contact type tubificidae sludge decrement reactor is made by synthetic glass, and reactor size is 64 * 54 * 60cm, virtual height 50cm, useful volume 173L.64 * 39 * 50cm contact decrement evenly is provided with the elastic filler that the polypropylene fibre strand is made in the zone, inoculates Limnodrilus hoffmeisteri on the filler, and Limnodrilus hoffmeisteri is mainly the Huo Fu Limnodrilus of Tubificidae and positive tubificid and belongs to etc., and Limnodrilus hoffmeisteri can be at the elastic filler apposition growth.Contact decrement zone side is the aeration agitation zone, 64 * 15 * 50cm aeration stirring area bottom is provided with micro-hole aerator, under aeration condition, for oxygen is supplied with in the growth of Limnodrilus hoffmeisteri, because the rising that air-flow carries current, mud mixed liquid in the reactor forms rotational flow, and the mud in the reactor is effectively contacted with Limnodrilus hoffmeisteri, is beneficial to the Limnodrilus hoffmeisteri sludge predation.The contact decrement area bottom is provided with mud discharging mouth.At reactor one end mud inlet is set, the other end sets out the mouth of a river, and water outlet is settled and strained hydrophone.
2. be used for pending excess sludge characteristic
The excess sludge of this art breading is from the municipal sewage plant that adopts active sludge, and the excess sludge characteristic index sees Table 1.
Table 1 excess sludge characteristic index table
3. process operation
Place Limnodrilus hoffmeisteri 346g (weight in wet base) in the contact type tubificidae sludge decrement reactor, and Limnodrilus hoffmeisteri apposition growth in elastic filler.Excess sludge enters in the reactor by certain time sequence, and controlling reactor is by 24 hours being the operation of 1 periodic structure, and successively according to advanced mud 1 hour (advancing mud aeration simultaneously), aeration 21 hours, precipitation 1 hour, strain the circulation of 1 hour sequential of water.Discharge reactor through sedimentary mineralising mud through running up to a certain amount of back, the discharge of precipitation supernatant liquor is back to the sewage treatment plant inflow system and handles.
4. mud decrement effect
Sewage treatment plant residual mud is handled surplus sludge volume 40L every day through after the reactor for treatment of the present invention, MLVSS1768～2010mg/L in the stabilization mud of discharge, and MLSS4773～5432mg/L, MLVSS/MLSS are 0.36～0.38.Surplus 68g reenters reactor with the form of earthworm excrement, becomes mineralising mud.The sludge index of mixed solution (SVI) is less than 58 in the reactor.
Claims (7)
1, a kind of contact type tubificidae sludge decrement reactor, described mud is the mud that sewage work's aerating system second pond is discharged, and it is characterized in that: it forms an open cuboid container by contact decrement area (1), aeration stirring area (2) and sludge discharging area (3); Side in open cuboid container upper end is provided with mud inlet (4), by mud inlet (4) end the contact decrement area (1) that accounts for cuboid container 2/3 capacity region is set in the cuboid container, hang elastic filler (5) in the contact decrement area (1), inoculation Limnodrilus hoffmeisteri (6) is gone up in elastic filler (5); Cuboid container 1/3 capacity region in addition is aeration stirring area (2), and the 0.3m place is provided with aerator (7) on the base plate of cuboid container; The contact decrement area bottom is sludge discharging area (3), at distance base plate 0.1m place shore pipe (10) is set, and is connected with mud discharging mouth (11); Hydrophone (8) is strained in a side setting relative with mud inlet (4), connects water outlet (9).
2, the using method of contact type tubificidae sludge decrement reactor according to claim 1, it is characterized in that: according to concrete processing requirement certain time sequence is set and carries out the operation of " advance mud---contact aeration---precipitation---spoil disposal/water outlet " loop cycle, concrete operations are: mud is by mud inlet (4) when entering described reactor, aerator (7) beginning air feed, stop into mud after 1～2 hour, continue to keep aeration and whipped state, mud decrement gradually under the effect of the Limnodrilus hoffmeisteri (6) in the elastic filler (5) stops aeration behind the contact aeration operation certain hour and precipitates in short-term; Discharge supernatant liquor by straining hydrophone (8) from water outlet (9) after precipitation is finished, bottom sludge discharging area (3) is discharged mud.
3, reactor according to claim 1 is characterized in that: the elastic filler (5) of hanging in the described contact decrement area (1) is the polypropylene fibre strand.
4, reactor according to claim 1 is characterized in that: Huo Fu Limnodrilus that the described Limnodrilus hoffmeisteri that is suspended in the elastic filler (5) is a Tubificidae and positive tubificid belong to.
5, reactor according to claim 1 is characterized in that: the aerator that aeration stirring area (2) is provided with apart from base plate 0.3m place is: 45 ° in Φ 4 holes are oblique down, the both sides staggered arrangement, and air velocity 5m/s eats dishes without rice or wine.
6, as the using method of reactor as described in the claim 2, it is characterized in that: described " advance mud---contact aeration---precipitation---spoil disposal/water outlet " the loop cycle operation, its certain time sequence is: advanced mud 1～2 hour, contact aeration 20～21 hours, precipitate 1 hour, spoil disposal/water outlet 1 hour.
7, as the using method of reactor as described in the claim 2, it is characterized in that: described reactor is connected in sewage work's aerating system second pond mud relief outlet, directly admits mud, carries out decrement treatment.
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| CN2009101529774A CN101671103B (en) | 2009-09-24 | 2009-09-24 | Contact type tubificidae sludge decrement reactor and application thereof |
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| CN2009101529774A CN101671103B (en) | 2009-09-24 | 2009-09-24 | Contact type tubificidae sludge decrement reactor and application thereof |
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| CN101671103A true CN101671103A (en) | 2010-03-17 |
| CN101671103B CN101671103B (en) | 2011-06-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583924A (en) * | 2011-12-08 | 2012-07-18 | 浙江工商大学 | Tubificidae sludge decrement enhanced biological denitrification device |
| CN103058368A (en) * | 2012-12-06 | 2013-04-24 | 浙江工商大学 | Reactor integrating sludge reduction by using water earthworms and synchronous degradation of organic pollutants and method |
| CN103086583A (en) * | 2012-12-25 | 2013-05-08 | 北京工业大学 | Device and method of enhancing sludge stability and sludge digestion liquid treatment |
| CN103207259A (en) * | 2013-04-03 | 2013-07-17 | 北京工业大学 | Method and device for quickly detecting influence on sludge activity caused by limnodrilus hoffmeisteri |
| CN111675461A (en) * | 2020-06-04 | 2020-09-18 | 北京建筑大学 | Beehive type sludge in-situ reduction device and method |
| CN113716683A (en) * | 2021-08-20 | 2021-11-30 | 浙江工商大学 | Tubificidae-dynamic membrane integrated reactor and sewage treatment method thereof |
-
2009
- 2009-09-24 CN CN2009101529774A patent/CN101671103B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583924A (en) * | 2011-12-08 | 2012-07-18 | 浙江工商大学 | Tubificidae sludge decrement enhanced biological denitrification device |
| CN103058368A (en) * | 2012-12-06 | 2013-04-24 | 浙江工商大学 | Reactor integrating sludge reduction by using water earthworms and synchronous degradation of organic pollutants and method |
| CN103058368B (en) * | 2012-12-06 | 2014-01-29 | 浙江工商大学 | Reactor integrating sludge reduction by using water earthworms and synchronous degradation of organic pollutants and method |
| CN103086583A (en) * | 2012-12-25 | 2013-05-08 | 北京工业大学 | Device and method of enhancing sludge stability and sludge digestion liquid treatment |
| CN103207259A (en) * | 2013-04-03 | 2013-07-17 | 北京工业大学 | Method and device for quickly detecting influence on sludge activity caused by limnodrilus hoffmeisteri |
| CN103207259B (en) * | 2013-04-03 | 2015-08-05 | 北京工业大学 | A kind of method that quick detection water earthworm affects sludge activity and device |
| CN111675461A (en) * | 2020-06-04 | 2020-09-18 | 北京建筑大学 | Beehive type sludge in-situ reduction device and method |
| CN113716683A (en) * | 2021-08-20 | 2021-11-30 | 浙江工商大学 | Tubificidae-dynamic membrane integrated reactor and sewage treatment method thereof |
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