CN210764546U

CN210764546U - DMBR double-membrane internal circulation biological reaction sewage treatment equipment

Info

Publication number: CN210764546U
Application number: CN201921436640.1U
Authority: CN
Inventors: 汪国荣
Original assignee: Jiangsu Haiyue Environmental Engineering Co ltd
Current assignee: Jiangsu Haiyue Environmental Engineering Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-06-16
Anticipated expiration: 2029-09-02

Abstract

A DMBR double-membrane internal circulation biological reaction sewage treatment device comprises a cleaning water tank and a DMBR double-membrane internal circulation biological reactor; the cleaning water tank is connected with the DMBR double-membrane internal circulation bioreactor through a water delivery pipe, and a grid are respectively arranged in the cleaning water tank and are arranged right in front of the grid; a guide plate is arranged in the DMBR double-membrane internal circulation bioreactor, the DMBR double-membrane internal circulation bioreactor is divided into a biomembrane reaction zone and a microfiltration membrane zone, a biomembrane group is arranged in the biomembrane reaction zone, and the microfiltration membrane zone is provided with a microfiltration membrane group; the outer side of the DMBR double-membrane internal circulation bioreactor is provided with an ozone sterilizer, and the DMBR double-membrane internal circulation bioreactor is communicated with the ozone sterilizer through a water outlet pipe.

Description

DMBR double-membrane internal circulation biological reaction sewage treatment equipment

Technical Field

The utility model belongs to the sewage treatment device correlation field, concretely relates to two membrane internal circulation bioreaction sewage treatment devices of DMBR.

Background

For urban sewage treatment, advanced treatment and recycling treatment of domestic sewage treatment plants, distributed sewage treatment, high-concentration, high-salt content and high-ammonia nitrogen degradation-resistant organic industrial wastewater and recycling treatment, firstly, water treatment personnel mainly recycle biochemical secondary effluent after lime clarification and chlorination treatment, the treatment efficiency is low, the operation is improper, and chemical sludge is easily formed to influence the operation of a system; with the improvement of the sewage reuse standard, the requirements of removing SS, colloid, large-particle organic matters, microbiological indexes and the like in water are further provided, and the advanced treatment process turns to a combined form of coagulation, precipitation, filtration, disinfection and the like. The treatment cost is lower than the price of tap water, although the traditional process is economically feasible, the efficiency of the traditional process is lower, the effluent can only meet the recycling with lower water quality requirements, such as green land irrigation, and the daily dosing cost is higher. In addition, the active carbon filtration and ozone active carbon process which is originally used only in the feedwater treatment is gradually applied to the treatment process of the reclaimed water. The sewage and wastewater are decolorized, deodorized and deodorized by active carbon filtration, and heavy metals, soluble organic matters, pesticides, radioactive elements and the like in the sewage and wastewater are effectively removed, although the method has the advantages of wide application range, good treatment effect, reusability and the like. However, the cost of the activated carbon is high, and although the service life can be prolonged by a regeneration method, the service life is still short.

The water resource shortage and the water environment pollution are main problems facing the global fresh water resources and are also serious challenges in the rapid development process of Chinese economy, and the sewage reuse is an important method for relieving the water resource shortage. The recycling of urban sewage in China is in the development stage at present, and the recycling rate of sewage is relatively low. As an important measure for effectively alleviating the shortage of water resources, the method has been closely concerned by government regulatory departments and various industries. The membrane bioreactor applied at the present stage is also called MBR bioreactor, which is a novel sewage treatment system developed by combining membrane separation technology and biological treatment process, the membrane bioreactor is composed of a membrane component and a bioreactor from the aspect of integral structure, the membrane applied to the wastewater treatment process of the membrane bioreactor is a microfiltration membrane or an ultrafiltration membrane, and the structural style mostly adopts a hollow fiber type, a flat plate type and the like. Currently, such devices have shaped products. The membrane bioreactor has the following advantages: the MBR process has the advantages of good effluent quality, easy control of process parameters, compact equipment, small occupied area and easy automatic control and management, and simultaneously has the problems like other processes, mainly the problem of membrane pollution, which is mainly attributed to the external pollution of the membrane, namely the adsorption of organic matters on the membrane surface, the precipitation of indissolvable inorganic matters on the membrane and the adhesion of microbial cells on the membrane surface, and the problem of membrane pollution is one of the main reasons influencing the popularization of the technology at present.

The existing membrane-bioreactor treatment technology combines a membrane separation technology with a biological treatment technology, has the advantages of small occupied area, high treatment efficiency, good effluent quality and the like, is used for treating medium and small-scale low-concentration organic wastewater, and the effluent can reach the first-grade A standard; however, the simple membrane-bioreactor requires continuous air washing of the membrane in addition to the need to maintain the amount of oxygenated aeration required for the biological treatment, and the total aeration amount is increased by about 50% compared with the conventional biological treatment, which has higher energy consumption; meanwhile, the sludge concentration is higher, the transmembrane pressure difference is higher, the flux, the working period and the service life of the membrane are influenced, and the membrane investment and maintenance cost are increased; the excess sludge yield is relatively large, and the difficulty of sludge treatment is increased. These drawbacks have severely hampered the widespread use of membrane-bioreactor technology in the field of municipal life treatment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two membrane internal circulation biological reaction sewage treatment device of DMBR to not enough among the prior art.

In order to realize the utility model adopts the following technical scheme: a DMBR double-membrane internal circulation biological reaction sewage treatment device comprises a cleaning water tank and a DMBR double-membrane internal circulation biological reactor; the cleaning water tank is connected with the DMBR double-membrane internal circulation bioreactor through a water delivery pipe, and a grid are respectively arranged in the cleaning water tank and are arranged right in front of the grid; a guide plate is arranged in the DMBR double-membrane internal circulation bioreactor, the DMBR double-membrane internal circulation bioreactor is divided into a biomembrane reaction zone and a microfiltration membrane zone, a biomembrane group is arranged in the biomembrane reaction zone, and the microfiltration membrane zone is provided with a microfiltration membrane group; an aeration device is also arranged in the DMBR double-membrane internal circulation bioreactor, and the aeration devices are respectively arranged at the bottoms of the biological membrane group and the microfiltration membrane group; the outer side of the DMBR double-membrane internal circulation bioreactor is provided with an ozone sterilizer, and the DMBR double-membrane internal circulation bioreactor is communicated with the ozone sterilizer through a water outlet pipe; and an intelligent controller is also arranged on the outer side of the DMBR double-membrane internal circulation bioreactor.

Further, when entering the DMBR double-membrane internal circulation bioreactor, the sewage firstly enters the biomembrane reaction zone for reaction and then enters the microfiltration membrane zone for reaction.

Further, the aeration device is connected with an air pump arranged outside the DMBR double-membrane internal circulation bioreactor through an aeration pipe, and the air pump controls the air input of the aeration device.

Further, be equipped with the elevator pump in the washing water tank, the elevator pump links to each other with the raceway, and the two membrane internal circulation bioreactors of DMBR are inputed to sewage by the elevator pump after the edulcoration of grid and graticule mesh to sewage.

Furthermore, a liquid level controller is arranged on the water delivery pipe and controls the flow of the sewage entering the DMBR double-membrane internal circulation bioreactor, so that the sewage can be fully reacted in a biomembrane reaction zone and a microfiltration membrane zone of the DMBR double-membrane internal circulation bioreactor.

Further, still be equipped with the self priming pump on the outlet pipe of DMBR double-membrane inner loop bioreactor and ozone disinfector intercommunication, sewage inhales the ozone disinfector with sewage by the self priming pump and disinfects after the DMBR double-membrane inner loop bioreactor reaction.

Furthermore, the intelligent controller is respectively connected with and controls the air pump, the lifting pump, the liquid level controller and the self-sucking pump.

Has the advantages that: (1) compared with a simple membrane bioreactor, the utility model reduces the oxygenation energy consumption by about 50 percent when treating low-concentration organic wastewater; the residual sludge is very little, and a special sludge treatment facility is not needed; the concentration of suspended sludge in the equipment is reduced by 80-90%, transmembrane pressure difference is reduced, the membrane flux reduction amplitude is reduced, and the working period and the service life of the membrane are prolonged, so that the investment and the operation and maintenance cost of the system are reduced.

(2) The utility model discloses further improve sewage treatment efficiency, the direct reuse of sewage after handling is in the normal water, and the device has compact structure, and degree of automation is high, the management is simple, requires that excess sludge is output fewly, and area is little, and is efficient, advantage that the working costs is low.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

Example (b): a DMBR double-membrane internal circulation biological reaction sewage treatment device comprises a cleaning water tank 1 and a DMBR double-membrane internal circulation biological reactor 2; the cleaning water tank connection 1 is connected with the DMBR double-membrane internal circulation bioreactor 2 through a water delivery pipe 9, a grid 3 and a grid 4 are respectively arranged in the cleaning water tank 1, and the grid 3 is arranged right in front of the grid 4; a guide plate 17 is arranged in the DMBR double-membrane internal circulation bioreactor 2, the DMBR double-membrane internal circulation bioreactor 2 is divided into a biomembrane reaction zone and a microfiltration membrane zone, a biomembrane group 5 is arranged in the biomembrane reaction zone, and the microfiltration membrane zone is provided with a microfiltration membrane group 6; an aeration device 7 is also arranged in the DMBR double-membrane internal circulation bioreactor 2, and the aeration device 7 is respectively arranged at the bottom of the biological membrane group 5 and the bottom of the microfiltration membrane group 6; an ozone sterilizer 8 is arranged on the outer side of the DMBR double-membrane internal circulation bioreactor 2, and the DMBR double-membrane internal circulation bioreactor 2 is communicated with the ozone sterilizer 8 through a water outlet pipe 10; an intelligent controller 16 is also arranged on the outer side of the DMBR double-membrane internal circulation bioreactor 2.

The aeration device 7 is connected with an air pump 12 arranged outside the DMBR double-membrane internal circulation bioreactor 2 through an aeration pipe 11.

A lifting pump 13 is arranged in the cleaning water tank 1, and the lifting pump 13 is connected with the water delivery pipe 9.

The water conveying pipe 9 is provided with a liquid level controller 14, and the liquid level controller 14 controls the flow of sewage entering the DMBR double-membrane internal circulation bioreactor 2.

And a self-priming pump 15 is also arranged on a water outlet pipe 10 of the DMBR double-membrane internal circulation bioreactor 2 communicated with the ozone disinfector 8.

And the intelligent controller 16 is respectively connected with the control air pump 12, the lifting pump 13, the liquid level controller 14 and the self-sucking pump 15.

Claims

1. A DMBR double-membrane internal circulation biological reaction sewage treatment device is characterized by comprising a cleaning water tank (1) and a DMBR double-membrane internal circulation biological reactor (2); the cleaning water tank connection (1) is connected with the DMBR double-membrane internal circulation bioreactor (2) through a water delivery pipe (9), a grid (3) and a grid (4) are respectively arranged in the cleaning water tank (1), and the grid (3) is arranged right in front of the grid (4); a guide plate (17) is arranged in the DMBR double-membrane internal circulation bioreactor (2), the DMBR double-membrane internal circulation bioreactor (2) is divided into a biomembrane reaction area and a microfiltration membrane area, a biomembrane group (5) is arranged in the biomembrane reaction area, and the microfiltration membrane area is provided with a microfiltration membrane group (6); an aeration device (7) is also arranged in the DMBR double-membrane internal circulation bioreactor (2), and the aeration device (7) is respectively arranged at the bottoms of the biological membrane group (5) and the microfiltration membrane group (6); an ozone sterilizer (8) is arranged on the outer side of the DMBR double-membrane internal circulation bioreactor (2), and the DMBR double-membrane internal circulation bioreactor (2) is communicated with the ozone sterilizer (8) through a water outlet pipe (10); an intelligent controller (16) is also arranged on the outer side of the DMBR double-membrane internal circulation bioreactor (2).

2. The DMBR double membrane internal circulation bioreaction sewage treatment plant according to claim 1, wherein said aerator (7) is connected to an air pump (12) arranged outside the DMBR double membrane internal circulation bioreactor (2) through an aerator pipe (11).

3. The DMBR double membrane internal circulation bioreaction sewage treatment plant according to claim 1, wherein a lift pump (13) is arranged in said cleaning water tank (1), said lift pump (13) being connected to said water pipe (9).

4. The DMBR double-membrane internal circulation bioreaction sewage treatment equipment according to claim 1, wherein the water pipe (9) is provided with a liquid level controller (14), and the liquid level controller (14) controls the flow of sewage into the DMBR double-membrane internal circulation bioreactor (2).

5. The DMBR double membrane internal circulation bioreaction sewage treatment plant according to claim 1, wherein a self-priming pump (15) is further provided on a water outlet pipe (10) of the DMBR double membrane internal circulation bioreactor (2) in communication with the ozone disinfector (8).

6. The DMBR double membrane internal circulation bioreaction sewage treatment plant of claim 1, wherein said intelligent controller (16) is connected to control air pump (12), lift pump (13), level controller (14), self priming pump (15) respectively.