CN202226753U - Sewage treatment device with function of sludge reduction - Google Patents

Sewage treatment device with function of sludge reduction Download PDF

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Publication number
CN202226753U
CN202226753U CN2011203583456U CN201120358345U CN202226753U CN 202226753 U CN202226753 U CN 202226753U CN 2011203583456 U CN2011203583456 U CN 2011203583456U CN 201120358345 U CN201120358345 U CN 201120358345U CN 202226753 U CN202226753 U CN 202226753U
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sludge
tank
pond
biochemical
biochemistry pool
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周浩男
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Shenzhen city in the World Environmental Technology Holdings Ltd.
Shenzhen Hesheng Environmental Technology Holding Co.,Ltd.
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NANJING ZHONGSHI ENVIRONMENT TECHNOLOGY Co Ltd
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Abstract

The utility model discloses a sewage treatment device with the function of sludge reduction, which comprises a materialization section, a biochemical tank, a secondary sedimentation tank, a phosphorous removal tank, a middle microorganism culture tank and a sludge dewatering center. Raw water is input from a water inlet of the materialization section, a water outlet of the materialization section is connected with the biochemical tank through a pipeline, and the biochemical tank is connected with secondary sedimentation tank which is respectively connected with the phosphorous removal tank, the middle microorganism culture tank and the sludge dewatering center. In addition, the secondary sedimentation tank is further connected with the biochemical tank through a backflow pipeline, a sludge outlet of the phosphorous removal tank is then connected with the sludge dewatering center, an outlet of the middle microorganism culture tank is respectively connected with the materialization section and the biochemical tank, and supernatant liquid is led to flow back by the sludge dewatering center and the biochemical tank. The sewage treatment device can reduce sludge, and annual average sludge production amount is 15% to 20% of an existing system. Smell is removed in pretreatment stage, thereby improving surroundings.

Description

A kind of waste disposal plant with sludge reduction function
Technical field
The utility model relates to a kind of waste disposal plant, specifically is a kind of waste disposal plant with sludge reduction function, and this device can be subdued surplus sludge volume in sewage treatment process.
Background technology
Activated sludge process is adopted in the processing of China's sewage mostly, and it has the advantage that initial cost is economized, treatment effect is good, but there is the drawback of a maximum in it always, and that is exactly in operational process, can produce a large amount of excess sludges.The hazardous and noxious substances that excess sludge contains a great deal of usually reaches the not organism of stabilization, if do not carry out appropriate processing and disposal, will cause directly or the potential pollution environment.In traditional activated sludge process, every degraded 1kgBOD 5(biochemical Oxygen Demand, five-day BOD) can produce the excess sludge of about 15 ~ 100 L, and the expense that is used to handle or dispose excess sludge accounts for 25% ~ 65% of WWT total expenses.
Solid in the mud has plenty of the suspended matter that is retained down, and has plenty of the biological sludge of being discharged by biological treatment system, and what have then is because of adding the chemical mud that medicament forms, and the sludge quantity of sewage work's generation is about about 0.15%-1% of treating water volume.The processing of mud and disposal are exactly to pass through the proper technique measure, mud is reused or turns back in the physical environment again with certain environmentally friendly form.These mud generally are rich in organism, germ etc., do not stack if do not add to handle arbitrarily, will produce new pollution to surrounding environment.The final disposal method of mud mainly contains: agricultural, fill out the sea, burn, bury ground, but before ultimate disposal, must carry out minimizing and stabilization to mud, just can be used for ultimate disposal.
The main at present sludge reduction method that adopts has; Uncoupling, high concentration of dissolved oxygen, aerobic deposition one anaerobism (OSA) technology, dissolved cell method; Like ozone, chlorine, soda acid, heating, UW, biological molten born of the same parents, microfauna reduces surplus sludge volume, multistage active biochemical treatment process, mud mechanical crushing method, catalytic wet oxidation two technology (WAO) or the like mutually.But above-mentioned technology shortcomings such as all the ubiquity technology is immature, working cost is high, investment is big.The technology of ultrasonication mud at present the domestic stage that is in laboratory study mostly, also is not applied in the engineering.
The utility model content
The utility model technical problem to be solved provides a kind of technology maturation, is suitable for the waste disposal plant that existing installation is transformed, and this device can significantly reduce the mud discharge capacity in sewage treatment process.
A kind of waste disposal plant with sludge reduction function; It is characterized in that comprising materialization section, biochemistry pool, second pond, dephosphorization pond, middle microorganism culturing pond and sludge dewatering center; The water-in of said materialization section is imported former water, and the water outlet of materialization section is through the pipe connection biochemistry pool, and biochemistry pool connects second pond; Second pond connects dephosphorization pond, middle microorganism culturing pond and sludge dewatering center more respectively; In addition, second pond also is connected with biochemistry pool through reflux line, and the sludge outlet in dephosphorization pond connects the sludge dewatering center again; The outlet of middle microorganism culturing pond connects materialization section and biochemistry pool respectively; Also reflux supernatant with biochemistry pool in the sludge dewatering center
The beneficial effect of the utility model:
1, make the sludge reduction of total system, average annual sludge output is the 15-20% of original system;
2, disappear smellyly at pretreatment stage, improved surrounding enviroment;
3, rearmounted dephosphorization can make total phosphorus obtain the removal more than 95%, and adds dose and be lower than conventional processing;
4, the dewatering performance of sludge that produces is good, and water ratio can reach 70%;
5, can improve the processing power of sewage work greatly, be 1.3-1.5 times of original processing power.
Table 1 is that the operating parameter of common process and the utility model technology compares
Table 1
Figure 2011203583456100002DEST_PATH_IMAGE002
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
One, the hardware of the utility model constitutes
The utility model mainly comprises following integral part:
(1) biochemical unit:
Be biochemistry pool, in biochemistry pool, effectively remove organic pollutant, change organic cpds into the inorganic molecules material through the mikrobe that self contains in the sewage;
(2) precipitation unit:
Be second pond, the waste water after biochemical treatment gets into second pond, and through 1 ~ 1.5 hour stop post precipitation, sewage up to standard was discharged, and a part is a returned sluge, and another part is an excess sludge, and the internal reflux ratio of returned sluge is 300-500%.
(3) microorganism culturing pond in the middle of:
The excess sludge that second pond comes out, import in the biochemical cultivation pool, under good oxygen condition, cultivate indigenous microorganism, the tremendous potential of performance mikrobe makes cultured mud be back to biochemical unit front end.
Microorganism culturing device in the middle of in middle microorganism culturing pond, utilizing was cultivated in this stage, was discharged into biochemical unit to cultured mikrobe, in biochemistry pool, excess sludge was carried out biological lysis, reached the amplification in mud age of mud.Thereby decrement in the process of realization organic sludge.Middle microorganism culturing pond sludge concentration is controlled at 8000-10000mg/L, and biochemical unit sludge concentration is controlled at below the 5500mg/L.
Middle microorganism culturing device
1, incubator controlled variable
Sludge concentration is controlled at 8000-10000mg/L;
Aeration rate is controlled at 0.5-4mg/L;
The pH value is at 6.5-7.8;
Temperature 15-30 ℃;
Design residence time 24h.
2, this technology is a purpose with the height chain reaction that improves biologic chain between mikrobe, and the optimal adaptation environment of microorganism species makes its WWT reach optimum regime in the middle of createing.The chain digestion that this technology can make excess sludge produce height finally reaches decrement, digestion, innoxious target.Its key link is:
1. be transformed into active sludge behind the microbiological degradation organism;
2. utilize carrier technique that enzyme and bionic acid are added in the microbe body through screening, form the middle mikrobe of satisfying specified conditions;
3. under the effect of middle microorganism culturing device, improve middle microbic activity and stability, continuous degrading activity mud (comprising long-term sedimentary dead mud), the active sludge after the decomposition is claimed commentaries on classics property mud;
4. mikrobe produces several higher acids in the middle of in the process of decomposing (metabolism) mud, becomes the nutrition agent of mikrobe, promotes the regeneration activating of mikrobe in the water;
5. the mikrobe that is activated continues the organic matter degradation process, produces the active balance biological floe, and therefore mikrobe food chain constitutes the loop in the water.
3, energy is supplied with and the transmission system
By the biocatalyzer carrier of materials such as enzyme and bionic acid, be the critical material that activates biologic chain through being processed to form.Function: to the organism continuous catalysis, through the mikrobe of sensitization, decomposing organic matter comes true thoroughly purifying water fully.
In middle microorganism culturing device, feasible bacterial activityization of eating mud is decomposed organic sludge in a large number, and the bacterium that lets mikrobe will eat mud again eats up, and forms a complete food chain with this.This system can let absolute aerobe, absolute anaerobe, the oxygen biology of holding concurrently, the aerobic-anaerobic mikrobe of having ready conditions coexist simultaneously, and these source of pollution of organic cpds are thoroughly cleared up.
(4) the smelly unit that disappears
The cultured mikrobe in microorganism culturing pond is back to the materialization section according to certain flow in the middle of utilizing, and sprays in this stage to disappear smellyly, and the spray mode adopts conventional spray header.Through action of microorganisms, eliminate the stink that ammonia nitrogen and sulfide bring.
(5) dephosphorization unit
The dephosphorization of original system is divided into two parts, the one, chemical dephosphorization, the 2nd, biological phosphate-eliminating.Under middle action of microorganisms, the reduction of discharging of organic sludge can be realized in the biochemical treatment unit, and phosphorus can't the way through biological phosphate-eliminating be discharged in the water body like this, and perfect for system need carry out rearmounted chemical dephosphorization.Conventional intermediate processing design is adopted in the dephosphorization pond.
Dephosphorization agent adopts efficient composite dephosphorizing agent; Processing efficiency can reach more than 95%; After being added in the sewage, many high volence metal ion medicaments all can generate difficult deliquescent compound with the dissolved phosphorus ionic bond in the sewage; But consider that for economic reasons the metal-salt medicament that is used for the phosphorus precipitating mainly is Fe 3+Salt, Fe 2+Salt and Al 3+Salt, these medicaments use with solution and suspension-s state.Except that the metal-salt medicament, calcium hydroxide is also as the precipitating medicament, and reaction generates water-fast calcium phosphate.Efficient composite dephosphorizing agent is with Ca 2+Salt, Fe 3+Salt, Fe 2+Salt and Al 3+The dephosphorization agent that salt is made in proportion.Processing efficiency can reach 95% clearance.(can enough buy on the market)
(6) sludge dewatering unit
According to system design, can realize the removal more than 95% of organic sludge, because the accumulation of the inorganic mud in biochemical unit, and the mud of subsequent chemistry dephosphorization all need be through after the sludge dewatering, outward transport landfill or brickmaking.Supernatant is back to the front end of WWT.
Mud produces and is divided into two parts: the one, and the regular spoil disposal of biochemistry pool (cycle is about three months), the 2nd, the mud of chemical dephosphorization.
Two, technical process explanation
1) former water at first gets into the materialization section, enters biochemistry pool after the processing and carries out biochemical treatment, and the removal of microorganisms organic pollutant through self contains in the sewage changes organic cpds into the inorganic molecules material.
2) waste water after biochemical treatment gets into second pond, and through 1 ~ 1.5 hour stop post precipitation, sewage up to standard was discharged, and from sedimentary mud, extracted a part and was back to biochemistry pool for returned sluge, and the mud that is back to biochemistry pool refluxes and moves by 100%.Other gets a part and is delivered to middle microorganism culturing pond for excess sludge, and the excess sludge extracted amount is 5% <b of returned sluge >.</b>Realize the running balance of organic sludge at biochemistry pool, thereby realize the zero release of organic sludge.
3) under the good oxygen condition of excess sludge in middle microorganism culturing pond, cultivate indigenous microorganism, and be back to 90% of cultured mud in the biochemistry pool front end, in biochemistry pool, excess sludge is carried out biological lysis, reach the amplification in age of mud mud; The cultured mud of rest part is back to the materialization section, to the former water of materialization section spray disappear smelly; The control of this moment all adopts under meter to monitor in real time.
4) rearmounted chemical dephosphorization is carried out in the water outlet of second pond entering dephosphorization pond; Add efficient composite dephosphorizing agent, improve effluent quality on the one hand, minimizing adds dose on the other hand; And do not need during the sludge dewatering of rear end to add other medicaments again, and the dehydrated sludge water ratio is reduced to 70%.Water outlet back up to standard discharging;
5) (like every three months) all is expelled to the sludge dewatering center with the mud of second pond behind the some cycles, and supernatant is back to the biochemistry pool front end after dewatering, and dewatered sludge is landfill or brickmaking then.
The utility model is fit to original municipal wastewater treatment system is carried out upgrading very much, and after the molten born of the same parents' technology of the biology of mikrobe in the middle of increasing, sludge quantity will significantly reduce, and the stability of system is strengthened, and anti impulsion load does not influence the original system effluent quality.

Claims (1)

1. waste disposal plant with sludge reduction function; It is characterized in that comprising materialization section, biochemistry pool, second pond, dephosphorization pond, middle microorganism culturing pond and sludge dewatering center; The water-in of said materialization section is imported former water, and the water outlet of materialization section is through the pipe connection biochemistry pool, and biochemistry pool connects second pond; Second pond connects dephosphorization pond, middle microorganism culturing pond and sludge dewatering center more respectively; In addition, second pond also is connected with biochemistry pool through reflux line, and the sludge outlet in dephosphorization pond connects the sludge dewatering center again; The outlet of middle microorganism culturing pond connects materialization section and biochemistry pool respectively; Also reflux supernatant with biochemistry pool in the sludge dewatering center.
CN2011203583456U 2011-09-23 2011-09-23 Sewage treatment device with function of sludge reduction Expired - Fee Related CN202226753U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104478181A (en) * 2014-12-12 2015-04-01 浙江省环境保护科学设计研究院 Sludge reduction device and method combining composite enzyme treatment with microfauna predation
CN105859079A (en) * 2016-04-20 2016-08-17 辽宁中部环保有限公司 Biochemical sludge reduction integrated device and using method thereof
CN112279367A (en) * 2020-11-28 2021-01-29 长春天皓环境科技有限公司 Humic activated sludge process for sewage treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104478181A (en) * 2014-12-12 2015-04-01 浙江省环境保护科学设计研究院 Sludge reduction device and method combining composite enzyme treatment with microfauna predation
CN105859079A (en) * 2016-04-20 2016-08-17 辽宁中部环保有限公司 Biochemical sludge reduction integrated device and using method thereof
CN112279367A (en) * 2020-11-28 2021-01-29 长春天皓环境科技有限公司 Humic activated sludge process for sewage treatment

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Patentee before: Zhou Haonan

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Address after: 518000, Guangdong, Shenzhen, Nanshan District Binhai Avenue and white stone road interchange mango network building 1201

Patentee after: Shenzhen Hesheng Environmental Technology Holding Co.,Ltd.

Address before: 518000, Guangdong, Shenzhen, Nanshan District Binhai Avenue and white stone road interchange mango network building 1201

Patentee before: Shenzhen city in the World Environmental Technology Holdings Ltd.

Address after: 518000, Guangdong, Shenzhen, Nanshan District Binhai Avenue and white stone road interchange mango network building 1201

Patentee after: Shenzhen city in the World Environmental Technology Holdings Ltd.

Address before: 518000, Guangdong, Shenzhen, Nanshan District Binhai Avenue and white stone road interchange mango network building 1201

Patentee before: Shenzhen city in the World Environmental Technology Co.,Ltd.

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Granted publication date: 20120523

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