CN216584399U - Domestic sewage treatment device - Google Patents
Domestic sewage treatment device Download PDFInfo
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- CN216584399U CN216584399U CN202123429799.0U CN202123429799U CN216584399U CN 216584399 U CN216584399 U CN 216584399U CN 202123429799 U CN202123429799 U CN 202123429799U CN 216584399 U CN216584399 U CN 216584399U
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Abstract
The utility model discloses a domestic sewage treatment device, its sewage treatment workshop section includes AO biomembrane-MBR technology pond, AO biomembrane-MBR technology pond is by the oxygen deficiency biomembrane pond of parallel setting, aerobe pond and MBR pond constitute, all arrange the biofilm carrier of inoculation mud in oxygen deficiency biomembrane pond and the aerobe pond, set up oxygen deficiency biomembrane pond agitator in the oxygen deficiency biomembrane pond bottom, aerobe pond bottom sets up aerobe pond backwash pump, the aerobe pond fan that aerobe pond top set up is used for supplying air to the pond in, set up the MB membrane module in the MBR pond, MBR pond top sets up MBR pond fan, the external MBR suction water pump in bottom. The device provided by the utility model has the advantages of mud throw volume is few, the excess sludge volume is few, need not additionally to throw nutritive material, easy operation, need not the long-time guard of personnel, treatment effect are good, be applicable to remote dispersion area and handle the debugging start-up of high concentration domestic sewage based on AO biomembrane-MBR technology on a large scale.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, in particular to domestic sewage treatment device, it is based on the little miniature high concentration domestic sewage in AO biomembrane-MBR technology processing dispersion area.
Background
With the improvement of the living standard of people, the problem of water pollution is increasingly paid attention to by people. Although the amount of sewage in remote dispersed areas such as expressway service areas and toll stations is small, the concentration of pollutants is high. In order to prevent the damage to the surrounding ecological environment, a sewage treatment device is required to be arranged.
At present, the micro domestic sewage with high concentration in remote dispersion areas is mostly purified by a microbiological method. Wherein, the A/O biomembrane-MBR process is a process form combining an anoxic-aerobic biomembrane process and an MBR process. The process has the characteristics of long and controllable sludge retention time, stable effluent quality, clear water quality, small dosage, difficult blockage of a reuse pipeline and the like when the process is used for reusing reclaimed water, and is a common process for treating small and miniature high-concentration domestic sewage in remote dispersion areas.
The sewage treatment by the microbiological method needs to carry out screening and directional culture on dominant bacteria of microbial strains so that the microbial strains meet the sewage treatment requirement. Therefore, a certain start-up time is required for a new sewage treatment apparatus.
The microorganism starting of the existing sewage treatment equipment used in the decentralized region mostly adopts two modes of a natural culture method and a sludge inoculation method. The natural culture method utilizes the microorganisms carried by the sewage to carry out sludge culture, has the advantages of simple operation, strong pertinence of the cultured sludge to the sewage and the like, but has long culture period, and the effluent which does not reach the standard during the culture period can damage the surrounding ecological environment. The sludge inoculation method realizes the directional culture of microorganisms by inoculating external sludge or adding microbial strains, has short starting time, but has the defects of longer adaptation time of the sludge to the existing water quality, need of adding nutrient substances for regulation and control and the like. The operation is complex, the personnel staying period is long, the material consumption is high, the price of microbial strains is high, and the method is not suitable for the debugging work of the micro domestic sewage in remote dispersion areas.
At present, although the A/O biomembrane-MBR process is generally applied to the treatment of small and miniature high-concentration domestic sewage in remote and dispersed areas, the problems of easy blockage of an MBR membrane, large residual sludge amount, high sludge discharge frequency, complex operation and maintenance and the like caused by too much or too little sludge inoculation amount due to long starting time still exist, and the development and the application of the A/O biomembrane-MBR process are greatly limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a domestic sewage treatment device, it handles the little miniature high concentration domestic sewage in dispersion area based on AO biomembrane-MBR technology, through combining the advantage separately with natural culture method and mud inoculation method, effectively solve the little miniature high concentration domestic sewage in dispersion area far away of AO biomembrane-MBR technology processing and start the operation complicacy, the poor problem of feasibility, it is few to have mud to throw the volume of adding, need not additionally to throw nutritive material, and easy operation, treatment effect advantage such as good.
A domestic sewage treatment device for treating small and miniature high-concentration domestic sewage in a dispersion area based on an A/O (anoxic/oxic) biomembrane-MBR (membrane bioreactor) process comprises the following steps:
the sewage water injection section comprises a regulating tank which is used for storing and filling the anoxic biomembrane tank, the aerobic biomembrane tank and the MBR tank with raw sewage to be treated, and an aeration device is arranged;
the sewage treatment working section is positioned behind the sewage water injection working section, a first flowmeter is arranged between the two working sections, the sewage treatment working section comprises an A/O biomembrane-MBR process tank, the A/O biomembrane-MBR process tank is composed of an anoxic biomembrane tank, an aerobic biomembrane tank and an MBR tank which are arranged in parallel, biological fillers for inoculating sludge are arranged in the anoxic biomembrane tank and the aerobic biomembrane tank, wherein an anoxic biomembrane tank stirrer is arranged at the bottom of the anoxic biomembrane tank, an aerobic biomembrane tank reflux pump is arranged at the bottom of the aerobic biomembrane tank, an aerobic biomembrane tank fan arranged above the aerobic biomembrane tank is used for supplying air to the tank, an MB membrane component is arranged in the MBR tank, sludge is inoculated in the MBR tank, an MBR tank fan is arranged above the MBR tank, a membrane suction water pump is externally connected at the bottom of the MBR tank, and then connected with a second flowmeter;
in the continuous operation stage, continuous water inflow is kept, an MBR membrane suction water outlet pump continuously and periodically operates, an anoxic biomembrane pool stirrer, an aerobic biomembrane pool fan, an MBR pool fan, an aerobic biomembrane pool reflux pump are started, and the aerobic biomembrane pool fan and the aerobic biomembrane pool reflux pump operate in an intermittent mode; the anoxic biomembrane tank stirrer and the MBR tank fan operate in a continuous mode.
Compared with the prior art, a based on little miniature high concentration sewage treatment plant in remote dispersion area of AO biomembrane-MBR technology processing has the advantage:
1) the utility model organically combines the natural culture method with the sludge inoculation method, fully utilizes the advantages of stronger sewage pertinence of the sludge cultured by the natural culture method and short starting time of the sludge inoculation method, and solves the problems of long sludge acclimation time, difficult starting and the like of sewage treatment equipment in remote dispersed areas;
2) the utility model has the advantages of small sludge adding amount in the starting process, no need of adding nutrient substances, convenient operation, low material consumption, no need of long-time standing and guard of personnel, and suitability for debugging and starting of large-scale water treatment equipment in remote and decentralized areas;
3) the utility model discloses a growth rate and good oxygen digestion rate of mud in the balanced MBR pond for the produced excess sludge volume of this technology is few and arrange the mud cycle length, has effectively solved in the AO biomembrane-MBR technology pond because of too much or too little MBR membrane that arouses of sludge volume blocks up, arranges mud frequency height, the operation maintenance complicacy scheduling problem, helps the steady operation of the little miniature high concentration domestic sewage treatment device in dispersion area far away.
Drawings
FIG. 1 is a schematic view of an A/O biofilm-MBR sewage treatment unit.
In the figure, 1-an adjusting tank, 2-A/O biomembrane-MBR process tank, 3-water inlet pump, 4-anoxic biomembrane tank stirrer, 5-anoxic biomembrane tank, 6-aerobic biomembrane tank, 7-biological filler, 8-aerobic biomembrane tank reflux pump, 9-MBR tank, 10-MBR membrane component, 11-MBR membrane suction water pump, 12-first flowmeter, 13-second flowmeter, 14-aerobic biomembrane tank fan and 15-MBR tank fan.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following will describe the domestic sewage treatment device provided by the present invention in detail with reference to the embodiments. The following examples are intended to illustrate the invention and are not intended to limit the scope of the invention.
Example 1
A domestic sewage treatment device for treating small and miniature high-concentration domestic sewage in a dispersion area based on an A/O (anoxic/oxic) biomembrane-MBR (membrane bioreactor) process comprises the following steps:
the sewage water injection section comprises a regulating tank which is used for storing and filling the anoxic biomembrane tank, the aerobic biomembrane tank and the MBR tank with raw sewage to be treated, and an aeration device is arranged;
the sewage treatment working section is positioned behind the sewage water injection working section, a first flowmeter is arranged between the two working sections, the sewage treatment working section comprises an A/O biomembrane-MBR process tank, the A/O biomembrane-MBR process tank is composed of an anoxic biomembrane tank, an aerobic biomembrane tank and an MBR tank which are arranged in parallel, biological fillers for inoculating sludge are arranged in the anoxic biomembrane tank and the aerobic biomembrane tank, an anoxic biomembrane tank stirrer is arranged at the bottom of the anoxic biomembrane tank, an aerobic biomembrane tank reflux pump is arranged at the bottom of the aerobic biomembrane tank, an aerobic biomembrane tank fan arranged above the aerobic biomembrane tank is used for supplying air to the tank, an MB membrane component is arranged in the MBR tank, sludge is inoculated in the MBR tank, an MBR tank fan is arranged above the MBR tank, a membrane suction water pump is externally connected at the bottom of the MBR tank, and then connected with a second flowmeter.
Use the utility model discloses handle a certain high-speed service area sewage, this sewage quality of water condition: the COD value is 403 +/-100 mg/L, and the ammonia nitrogen concentration is 150 +/-20 mg/L. The treatment process adopts an A/O biomembrane-MBR process, and the effective volumes of the aerobic biomembrane tank and the MBR tank are 75m3。
1) A sewage water injection stage: and (3) filling the aerobic biomembrane pond, the anoxic biomembrane pond and the MBR pond with domestic sewage raw water in the service area regulating pond, starting an aeration device, and aerating the aerobic biomembrane pond and the MBR pond for 24 hours.
2) A sludge inoculation stage: after the step (1) is finished, according to the calculation of adding 4kg of dehydrated sludge into each unit of effective volume of the tank body, pulling and transporting 300kg of fresh dehydrated sludge which is not added with the drugs and is subjected to filter pressing by a sludge filter press of the municipal sewage treatment plant as seed sludge of reaction equipment. The dewatered sludge is treated according to the following steps of 1: 4: the adding proportion of 1 is that 50kg, 200kg and 50kg of dewatered sludge are respectively added into the anoxic biomembrane pond, the aerobic biomembrane pond and the MBR pond.
3) And (3) mixing: and (3) after the step (2) is finished, opening the aerobic biomembrane pond fan, the MBR pond fan and the anoxic biomembrane pond stirrer, and working for 2 hours.
4) A continuous operation stage: after the step (3) is finished, continuously feeding water into the reaction tank, wherein the water feeding amount is the average flow of the sewage amount actually generated in the service area every day; the membrane pumping water outlet pump is stopped for 1 minute according to 3 minutes of operation and continuously operated in an operation period, and the water outlet flow and the water inlet flow of the membrane are regulated and controlled to be the same as the water inlet flow; starting an anoxic tank stirrer and an MBR tank fan and continuously operating; starting the aerobic biomembrane pool fan, and adjusting the air quantity and water inflow ratio of the aerobic biomembrane pool fan to be 15: 1, the operation is intermittently carried out according to the mode of operating for 60 minutes and stopping operating for 30 minutes. Starting a reflux pump of the aerobic biomembrane pond, intermittently and continuously operating in a 60-minute operation mode after operating for 60 minutes, and adjusting the reflux ratio to 200%. After 12 days of operation, the ammonia nitrogen in the effluent of the system is reduced to 4.2 +/-1.2 mg/L from 150 +/-20 mg/L, and the COD is reduced to below 45 +/-5 mg/L from 403 +/-100 mg/L, which marks the successful start of the A/O biomembrane-MBR process.
The present invention is not limited to the above-described examples, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art.
Claims (1)
1. A domestic sewage treatment device for treating small and miniature high-concentration domestic sewage in a dispersion area based on an A/O (anaerobic/anoxic) biomembrane-MBR (membrane bioreactor) process is characterized by comprising the following steps:
the sewage water injection section comprises a regulating tank which is used for storing and filling the anoxic biomembrane tank, the aerobic biomembrane tank and the MBR tank with raw sewage to be treated, and an aeration device is arranged;
the sewage treatment working section is positioned behind the sewage water injection working section, a first flowmeter is arranged between the two working sections, the sewage treatment working section comprises an A/O biomembrane-MBR process tank, the A/O biomembrane-MBR process tank is composed of an anoxic biomembrane tank, an aerobic biomembrane tank and an MBR tank which are arranged in parallel, biological fillers for inoculating sludge are arranged in the anoxic biomembrane tank and the aerobic biomembrane tank, wherein an anoxic biomembrane tank stirrer is arranged at the bottom of the anoxic biomembrane tank, an aerobic biomembrane tank reflux pump is arranged at the bottom of the aerobic biomembrane tank, an aerobic biomembrane tank fan arranged above the aerobic biomembrane tank is used for supplying air to the tank, an MB membrane component is arranged in the MBR tank, sludge is inoculated in the MBR tank, an MBR tank fan is arranged above the MBR tank, a membrane suction water pump is externally connected at the bottom of the MBR tank, and then connected with a second flowmeter;
in the continuous operation process, continuous water inflow is kept, an MBR membrane suction water outlet pump continuously and periodically operates, an anoxic biomembrane pool stirrer, an aerobic biomembrane pool fan, an MBR pool fan, an aerobic biomembrane pool reflux pump are started, and the aerobic biomembrane pool fan and the aerobic biomembrane pool reflux pump intermittently operate; the anoxic biomembrane tank stirrer and the MBR tank fan operate in a continuous mode.
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| CN202123429799.0U CN216584399U (en) | 2021-12-31 | 2021-12-31 | Domestic sewage treatment device |
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| CN202123429799.0U CN216584399U (en) | 2021-12-31 | 2021-12-31 | Domestic sewage treatment device |
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| CN216584399U true CN216584399U (en) | 2022-05-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784430A (en) * | 2022-12-07 | 2023-03-14 | 华夏碧水环保科技股份有限公司 | Rapid co-culture method of aerobic granular sludge and biological carrier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115784430A (en) * | 2022-12-07 | 2023-03-14 | 华夏碧水环保科技股份有限公司 | Rapid co-culture method of aerobic granular sludge and biological carrier |
| CN115784430B (en) * | 2022-12-07 | 2024-02-20 | 华夏碧水环保科技股份有限公司 | Rapid co-culture method for aerobic granular sludge and biological carrier |
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