CN212222745U - Domestic sewage treatment device with integrated membrane bioreactor - Google Patents
Domestic sewage treatment device with integrated membrane bioreactor Download PDFInfo
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- CN212222745U CN212222745U CN202020629495.5U CN202020629495U CN212222745U CN 212222745 U CN212222745 U CN 212222745U CN 202020629495 U CN202020629495 U CN 202020629495U CN 212222745 U CN212222745 U CN 212222745U
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Abstract
The utility model discloses an integrated membrane bioreactor domestic sewage treatment device. The device comprises a grating tank, an adjusting tank, a hydrolysis acidification tank, an integrated membrane biological reaction tank, a disinfection tank and a sludge tank, and sewage is processed by sequentially passing through the grating tank, the adjusting tank, the hydrolysis acidification tank, the integrated membrane biological reaction tank and the disinfection tank. The utility model discloses organic matter (COD, BOD)5) The removal capability and the nitrogen and phosphorus removal capability are strong, and the structure is simple and easy to manage.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to an integrated membrane bioreactor domestic sewage treatment device.
Background
According to statistics, the annual discharge amount of domestic sewage in rural areas of China is about 80 hundred million tons, the rural sewage treatment rate is only 6 percent, and 96 percent of villages do not have sewage discharge pipelines and sewage treatment systems. Rural domestic sewage has the characteristics of high dispersibility, difficulty in uniform collection, small water quantity, large water quantity fluctuation and the like, and the environment pollution is brought to the nature by directly discharging wastewater. The rural domestic sewage treatment technology in China mostly adopts the traditional physicochemical, artificial wetland and biological treatment technologies, and the adoption of the technologies faces the following problems: the process is complex and the management is difficult; the quality of the effluent is unstable.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integrated membrane bioreactor biological sewage assistant device with stable water quality for water outlet aiming at the defects in the prior art.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
an integrated membrane bioreactor domestic sewage treatment device comprises a grating tank, a regulating tank, a hydrolysis acidification tank, an integrated membrane bioreactor, a disinfection tank and a sludge tank, wherein the grating tank is used for removing large granular substances in sewage; the inlet of the adjusting tank is communicated with the grating tank and is used for adjusting the water quantity and the water quality; the inlet of the hydrolysis acidification tank is communicated with the outlet of the regulating tank and is used for hydrolysis acidification; the inlet of the integrated membrane biological reaction tank is communicated with the hydrolysis acidification tank and is used for removing organic matters; the inlet of the disinfection tank is communicated with the water outlet of the integrated membrane biological reaction tank and is used for disinfecting the outlet water; the sludge tank inlet is communicated with the sludge outlet of the integrated membrane biological reaction tank and is used for discharging sludge.
Preferably, two lifting pumps, two sets of liquid level meters and one set of flow meter are arranged in the regulating reservoir.
Preferably, a microporous aerator, a perforated pipe and a membrane assembly are arranged in the integrated membrane biological reaction tank, the membrane assembly is connected with a self-priming pump and a back-flushing pump, and the microporous aerator and the perforated pipe are connected with an aerator.
Preferably, the sludge outlet of the integrated membrane biological reaction tank is also communicated with the hydrolysis acidification tank.
Preferably, the disinfectant inlet of the disinfection tank is connected with a chlorine dioxide generator.
Compared with the prior art, the utility model has the advantages that:
the utility model discloses the device includes grid pond, equalizing basin, hydrolysis-acidification pond, integration membrane biological reaction pond, disinfection pond and sludge impoundment, loops through grid pond, equalizing basin, hydrolysis-acidification pond, integration membrane biological reaction pond and disinfection pond with sewage during the use and can accomplish the processing to sewage. Compared with the traditional physical and chemical, artificial wetland and biological treatment technologies, the method has simple process and easy management. The integrated membrane bioreactor replaces gravity precipitation in the traditional process, solves the technical problem that the treatment result is determined by particle settleability, can well realize solid-liquid separation, and ensures the quality of effluent water.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments or related technologies will be briefly introduced below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention and are not limiting to the present invention.
Fig. 1 is a block diagram of the present invention.
Reference numbers in the figures: 1. a grid tank; 2. a regulating tank; 3. a hydrolysis acidification pool; 4. an integrated membrane biological reaction tank; 5. a disinfection tank; 6. a sludge tank; 7. an aerator; 8. a chlorine dioxide generator.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the present invention, taken in conjunction with the accompanying drawings and the detailed description, is given in a non-limiting manner.
As shown in figure 1, the integrated membrane bioreactor domestic sewage treatment device comprises a grating tank 1, a regulating tank 2, a hydrolysis acidification tank 3, an integrated membrane biological reaction tank 4, a disinfection tank 5 and a sludge tank 6, wherein an outlet of the grating tank 1 is communicated with an inlet of the regulating tank 2, an outlet of the regulating tank 2 is connected with an inlet of the hydrolysis acidification tank 3 through a suction pump, an outlet of the hydrolysis acidification tank 3 is communicated with an inlet of the integrated membrane biological reaction tank 4, a water outlet of the integrated membrane biological reaction tank 4 is communicated with the disinfection tank 5, and a sludge outlet of the integrated membrane biological reaction tank 4 is communicated with the hydrolysis acidification tank 3 and the sludge tank 6.
A set of stainless steel grating with a grating gap of 5mm is arranged in the grating pool 1.
A set of flow meter, two sets of liquid level meters and two sets of lift pumps are arranged in the regulating tank 2, and the flow rate of the lift pumps is 10m3H, a lift of 10m and a power of 0.75 KW. The flow meter is used for controlling the sewage flow into the regulating reservoir 2; the two sets of liquid level meters are used for controlling the running state of the lift pump, so that the lift pump is prevented from still running in a water-free state.
The effective volume of the hydrolysis acidification tank 3 is 34m3. A set of perforated pipes connected with an aerator is arranged in the hydrolysis acidification tank 3 and is used for increasing the contact interface between the air and the wastewater and dissolving the oxygen in the air into the water. An aeration pipe in the hydrolysis acidification tank 3 is connected with the outlet of the aerator 7.
A microporous aerator, a perforated pipe and a membrane component are arranged in the integrated membrane biological reaction tank 4, the membrane component is connected with a self-priming pump and a back-flushing pump, and the microporous aerator and the perforated pipe are connected with an aerator 7. The microporous aerator and the perforated pipe both belong to air diffusion devices, and are used for increasing the contact interface between air and wastewater and dissolving oxygen in the air into water, the microporous aerator belongs to a micro-bubble type air diffusion device, and the perforated pipe belongs to a middle-bubble type air diffusion device. The membrane component is a core component of the membrane bioreactor, pollutants are separated through ultrafiltration, and the membrane component of the embodiment adopts a built-in hollow fiber membrane component. The self-priming pump pumps the treated wastewater out of the membrane bioreactor. The back washing pump is used for washing the polluted membrane component after operating under certain conditions. The sludge pump is used for discharging the residual sludge of the membrane bioreactor.
The disinfectant inlet of the disinfection tank 5 is connected with the outlet of an HB-200 chlorine dioxide generator 8, the generating amount of the chlorine dioxide generator 8 is 200g/h, and the power is 0.4 KW.
A 40QW8-15-1.1 sludge pump is arranged in the sludge tank 6, and the flow rate of the sludge pump is 8m3H, lift 15m, power 1.1 KW.
The sewage treatment method based on the integrated membrane bioreactor domestic sewage treatment device comprises the following steps:
1) the sewage is introduced into the grid pond 1 to intercept large substances in the sewage. The sewage contains various floating substances and needs to be intercepted by a grating. So as to prevent the subsequent water pump or treatment equipment from being blocked and avoid the increase of the maintenance frequency caused by the precipitation in the subsequent water tank. Because the water quantity is small, the amount of grid slag is small, and in order to reduce the construction cost, an artificial grid is adopted in design, and the grid slag cleaned by the artificial grid and other garbage are periodically transported outwards or incinerated for disposal.
2) After being treated by the grating, the sewage overflows to the regulating tank 2 to balance the water quantity and the water quality. Because the quality of the water discharged by the sewage is very uneven, the quality and the fluctuation of the water quantity of the incoming sewage are large, the quality and the quantity of the water subjected to biochemical treatment can be stable only by introducing the sewage into the regulating tank 2, and the impact load of a subsequent treatment structure is reduced.
3) The sewage is lifted by a pump to enter a hydrolytic acidification tank 3, and various bacteria which can survive in an anaerobic and aerobic state exist in the tank, so that the purposes of hydrolytic acidification and decomposition of the raw water quality into small molecules are achieved. Hydrolytic acidification is accomplished by a wide variety of fermenting bacteria, such as: one or more of clostridium, bacteroides, microzyme, mould and nitrosomonas. The wastewater remained there for about 4 hours, with an expected organic removal of 25%.
4) The wastewater enters an integrated membrane biological reaction tank 4 after hydrolytic acidification treatment. The sewage is fully mixed with suspended and attached microorganisms under the aeration and stirring of the sewage, the aerobic microorganisms in the pool degrade organic matters in the sewage to convert the organic matters into CO2, H2O, inorganic salts, new ecological flora and the like, and the aim of purifying the water quality is fulfilled by filtering the organic matters through a membrane module. The wastewater remained there for about 8 hours, with an expected organic removal of 85%. Part of the sludge generated in the step reflows to the hydrolysis acidification tank 3, the reflow ratio is 300 percent, and the rest sludge is discharged to the sludge tank 6 and then compressed and transported outside at regular time.
5) After being filtered by the membrane component, the sewage enters a disinfection tank 5 for disinfection, so that the number of faecal coliform is less than 1000 per liter and then the faecal coliform is discharged. Chlorine dioxide disinfectant is used for disinfection, wherein sodium chlorate and hydrochloric acid in the chlorine dioxide generator 8 are accurately metered by the respective metering devices, are put into the reactor to react to generate chlorine dioxide gas, and are pumped by the ejector to be mixed with water to prepare the high-efficiency chlorine dioxide disinfectant.
Claims (5)
1. The integrated membrane bioreactor domestic sewage treatment device is characterized by comprising a grating tank, a regulating tank, a hydrolysis acidification tank, an integrated membrane bioreactor, a disinfection tank and a sludge tank, wherein,
the grating tank is used for removing large-particle substances in the sewage;
the inlet of the adjusting tank is communicated with the grating tank and is used for adjusting the water quantity and the water quality;
the inlet of the hydrolysis acidification tank is communicated with the outlet of the regulating tank and is used for hydrolysis acidification;
the inlet of the integrated membrane biological reaction tank is communicated with the hydrolysis acidification tank and is used for removing organic matters;
the inlet of the disinfection tank is communicated with the water outlet of the integrated membrane biological reaction tank and is used for disinfecting the outlet water;
the sludge tank inlet is communicated with the sludge outlet of the integrated membrane biological reaction tank and is used for discharging sludge.
2. The integrated membrane bioreactor domestic sewage treatment device of claim 1 wherein two lift pumps, two sets of level gauges and one set of flow meter are provided in the conditioning tank.
3. The integrated membrane bioreactor domestic sewage treatment device of claim 1, wherein the integrated membrane bioreactor is internally provided with a microporous aerator, a perforated pipe and a membrane module, the membrane module is connected with a self-priming pump and a back-flushing pump, and the microporous aerator and the perforated pipe are connected with an aerator.
4. The integrated membrane bioreactor domestic sewage treatment device of claim 1 wherein the sludge outlet of the integrated membrane bioreactor tank is further communicated with a hydrolysis acidification tank.
5. The integrated membrane bioreactor domestic sewage treatment unit of claim 1 wherein the disinfectant inlet of the disinfection tank is connected to a chlorine dioxide generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020629495.5U CN212222745U (en) | 2020-04-23 | 2020-04-23 | Domestic sewage treatment device with integrated membrane bioreactor |
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| CN202020629495.5U CN212222745U (en) | 2020-04-23 | 2020-04-23 | Domestic sewage treatment device with integrated membrane bioreactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439892A (en) * | 2020-04-23 | 2020-07-24 | 广西中冠智合环保技术有限公司 | Domestic sewage treatment device and method with integrated membrane bioreactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111439892A (en) * | 2020-04-23 | 2020-07-24 | 广西中冠智合环保技术有限公司 | Domestic sewage treatment device and method with integrated membrane bioreactor |
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