CN202849198U - Buried flat sheet membrane MBR (membrane biological reactor) sewage treatment device - Google Patents

Abstract

The utility model relates to a sewage treatment device, in particular to a buried flat membrane MBR sewage treatment device. It includes a machine room, an automatic control system, and a lifting well, a regulating pool, an MBR pool and a reclaimed water pool that are connected in sequence through pipelines. The lifting well is connected to the external sewage pipeline, and the regulating pool and the MBR pool are respectively arranged in the lifting shaft. On both sides, the upper part of the lifting shaft is separated to form a machine room, and the center of the adjustment pool is separated to form a middle water pool. A fine grid is arranged above the adjustment pool, and a perforated aeration tube is installed at the bottom of the adjustment pool. At least one set of flat plates are placed in the MBR pool. Membrane MBR membrane module, the lifting well, regulating tank, MBR tank, reclaimed water tank and machine room are all set below the ground, and the automatic control system is set above the ground. The utility model is buried, does not occupy the surface area, and has the advantages of no broken wire of the membrane module, strong anti-pollution ability, online cleaning, convenient cleaning and maintenance of the membrane module, and long service life.

Description

A buried flat membrane MBR sewage treatment device

technical field

The utility model relates to a sewage treatment device, in particular to a buried flat membrane MBR sewage treatment device.

Background technique

The reuse of reclaimed water is to return the high-quality miscellaneous drainage (excluding feces and kitchen drainage), miscellaneous drainage (excluding fecal sewage) and domestic sewage (waste) water used in people's life and production to recycling. Used as ground cleaning, watering flowers, car washing, air conditioning cooling, toilet flushing, fire fighting and other miscellaneous water that does not come into direct contact with the human body, so as to achieve the purpose of saving water. With the aggravation of water shortage, reclaimed water development and reuse technology has developed rapidly recently. In the existing technology, the traditional activated sludge method is used to treat domestic sewage to meet the reuse standard of reclaimed water, which has the disadvantages of complex process flow, large floor area, frequent cleaning and complicated maintenance of membrane modules, and the treatment capacity is small and the land is tight. It is not applicable to the sewage treatment water reuse projects in hotels, guesthouses, residential areas and other places.

Contents of the invention

The technical problem to be solved by the utility model is: to provide a buried flat membrane MBR sewage treatment device that does not occupy the surface area, has no broken wires in the membrane module, is not easy to be polluted, realizes online cleaning, and has a long cleaning cycle, which solves the problem of existing There are problems such as complex process flow, large floor area, frequent cleaning and complex maintenance of membrane modules in water reuse projects in traditional activated sludge processes.

The technical solution for solving the above-mentioned technical problems is: a kind of buried flat membrane MBR sewage treatment device, including a machine room, an automatic control system and a lifting well, a regulating tank, an MBR tank and a reclaimed water tank connected in sequence through pipelines. The lifting well is connected to the external sewage pipeline, the regulating pool and the MBR pool are respectively arranged on both sides of the lifting well, the upper part of the lifting well is separated to form a machine room, and the middle of the regulating pool is separated to form a middle water pool, and a fine grid is arranged above the regulating pool , the bottom of the adjustment tank is provided with a perforated aeration pipe, and at least one set of flat membrane MBR membrane modules is placed in the MBR tank. The lifting well, the adjustment tank, the MBR tank, the reclaimed water tank and the machine room are all set below the ground, and the automatic control The system is set above ground.

The lifting well communicates with the regulating pool through the sewage pump I and the outlet pipe of the lifting well, and the regulating pool communicates with the MBR pool through the sewage pump II and the outlet pipe of the regulating pool. The suction pump is connected to the reclaimed water tank, the aeration pipe in the regulating tank is connected to the blower through a pipe, the aeration pipe at the bottom of the flat membrane MBR membrane module is connected to the blower through a pipe, and a clean water pump and a reclaimed water tank connected to the clean water pump are installed in the reclaimed water tank The outlet pipe, the blower and the self-priming pump are placed in the machine room.

A further technical proposal of the utility model is: at least two sets of flat membrane MBR membrane modules are arranged in parallel in the MBR pool.

An overflow port communicating with the lifting shaft is opened above the MBR pool.

The reclaimed water pool is equipped with a disinfection device. The disinfection device includes a dosing box, a dosing pump connected to the dosing box, and a dosing pipeline connected to the dosing pump at one end. The other end of the dosing pipeline is connected to the self-priming The pump outlet pipe is connected, and the dosing box and the dosing pump are placed in the machine room.

The sewage pump I, sewage pump II, clear water pump, air blower, self-priming pump and dosing pump are all connected to the automatic control system.

Due to the adoption of the above structure, a buried flat membrane MBR sewage treatment device of the utility model has the following beneficial effects.

1. This utility model can adopt glass fiber reinforced plastic box structure or reinforced concrete box structure, sewage collection (lift well), sewage pretreatment (fine grid and regulating pool) and subsequent MBR treatment (MBR pool) and effluent disinfection accessories The equipment (reclaimed water pool, blower, self-priming pump and disinfection device placed centrally in the machine room) are all integrated in a box, which is placed underground, which has the advantages of low energy consumption and does not occupy the surface area; for hotels with tight land use, It is very suitable for sewage treatment and reclaimed water reuse projects in hotels, residential areas and other places.

2. In the MBR pool of the present utility model, a flat membrane MBR membrane module is used. The membrane element in the membrane module is a flat type, and each flat type membrane element is formed by pasting flat membrane membrane cloth on both sides of the support plate. Filling into the membrane element box at certain intervals, there is no problem of broken wires, the aeration and cleaning of the membrane surface and the cross-flow are more effective, the pollutants are not easy to deposit on the membrane surface, and when the single membrane is damaged, it can be replaced separately. The membrane bioreactor (Membrane Bioreactor, referred to as MBR) technology is a new process combining biological treatment technology and membrane separation technology. It can efficiently separate solids and liquids, obtain stable reclaimed water for direct use, and Maintaining a high concentration of microbial biomass in the biological pool, less residual sludge in the process, can effectively remove ammonia nitrogen, suspended solids and turbidity in the effluent are close to zero, and bacteria and viruses in the effluent are greatly removed. It can provide reliable water quality for reuse. ensure.

To sum up, the utility model has the advantages of not occupying the surface area, no broken wire of the membrane module, strong anti-pollution ability, online cleaning, convenient cleaning and maintenance of the membrane module, and long service life.

Below, the technical features of a buried flat membrane MBR sewage treatment device of the utility model will be further described in conjunction with the accompanying drawings and embodiments.

Description of drawings

Figure 1: Schematic diagram of the structure of the utility model's buried flat membrane MBR sewage treatment device.

Figure 2: Schematic diagram of the communication relationship between the pools and the machine room of the utility model.

Figure 3: The front view (sectional view) of the connection between the MBR tank, the lifting shaft and the machine room of the utility model.

Figure 4: A top view (sectional view) of the connection between the MBR pool, the lifting shaft and the machine room of the utility model.

Figure 5: A schematic diagram of the connection between the pool and the disinfection device in the utility model.

Figure 6: Schematic diagram of the structure of the flat membrane MBR membrane module of the present invention.

In the figure: 1-lift well, 11-sewage pump Ⅰ, 12-lift well outlet pipe, 2-adjustment tank, 21-sewage pump II, 22-regulation tank outlet pipe, 23-fine grid, 24-perforated aeration pipe , 3-MBR tank, 31-flat membrane MBR membrane module, 32-collection pipe, 33-flat membrane element, 34-membrane element box, 35-aeration box, 36-aeration pipe, 4-in the water tank, 41- Submersible pump Ⅲ, 42-water tank outlet pipe, 5-machine room, 51-blower, 52-self-priming pump, 6-automatic control system, 7-disinfection device, 71-dosing box, 72-dosing pipeline, 73- Dosing pump.

Detailed ways

Embodiment 1: A kind of buried flat membrane MBR sewage treatment device, as shown in Fig. 1-Fig. pool 3 and reclaimed water pool 4, the lifting well is connected to the external sewage pipeline, the regulating pool 2 and the MBR pool 3 are respectively arranged on both sides of the lifting well 1, the upper part of the lifting well is separated to form a machine room, and the middle part of the regulating pool is separated to form a central A pool, the top of the adjustment pool is provided with a fine grid 23, the bottom of the adjustment pool is provided with a perforated aeration pipe 24, the perforated aeration pipe is connected to the blower 51 through a pipeline, and two groups of flat plates connected in parallel are placed in the MBR pool 3 Membrane MBR membrane module 31, the lifting well 1, regulating pool 2, MBR pool 3, reclaimed water pool 4 and machine room 5 are all set below the ground, and the automatic control system 6 is set above the ground.

The lifting well 1 communicates with the regulating tank 2 through the sewage pump I11 and the lifting well outlet pipe 12. The water from the lifting well first passes through the fine grid above the regulating pond and then flows into the regulating pond. The regulating pond 2 passes through the sewage pump II21 and the regulating pond outlet pipe 22. It communicates with the MBR pool 3, the upper water collection pipe 32 of the flat membrane MBR membrane module 31 in the MBR pool communicates with the middle water tank 4 through the pipeline and the self-priming pump 52, and the aeration pipe 36 at the bottom of the flat membrane MBR membrane module 31 passes through the pipeline and blower 51 Connection, the reclaimed water tank is provided with a clear water pump 41 and a reclaimed water tank outlet pipe 42 connected with the clear water pump, and the treated reclaimed water is stored in the reclaimed water tank, and is output through the connection between the clear water pump and the reclaimed tank outlet pipe. The blower 51 and the self-priming pump 52 are placed in the machine room 5 . The sewage pump I11, sewage pump II21, clear water pump 41, air blower 51, self-priming pump 52, and dosing pump 73 are all connected to the automatic control system 6.

An overflow port communicating with the lift shaft 1 is opened above the MBR pool 3 . The main purpose is to prevent the mixed liquid in the MBR pool from escaping from the pool surface when the liquid level control of the MBR pool fails. The reclaimed water pool 4 is equipped with a disinfection device 7 (see Figure 5), and the disinfection device includes a dosing box 71, a dosing pump 73 connected to the dosing box, and a dosing pipeline connected to the dosing pump at one end 72. The other end of the dosing pipeline 72 communicates with the outlet pipe of the self-priming pump 52, and the dosing box 71 and the dosing pump 73 are placed in the machine room 5.

The utility model can adopt a glass fiber reinforced plastic box structure or a reinforced concrete box structure.

As a modification of this embodiment, the number of flat membrane MBR membrane modules installed in the MBR tank can be determined according to the actual sewage treatment capacity, at least one set of flat membrane MBR membrane modules can be placed.

The flat membrane MBR membrane assembly described in the utility model is mainly composed of a water collection pipe 32, a membrane element box 34, an aeration box 35 and an explosion pipe 36 (see Figure 6), and a certain number of flat membrane elements are installed in the membrane element box 34 33. The flat membrane element is formed by welding flat membrane membrane cloth on both sides of the support plate. Its specific structure is the same as that of the existing flat membrane MBR membrane module. It will not be described in detail here. When the membrane module is running, clean water passes through the membrane cloth , into the water collecting pipe 32 for further collection.

The effect of each pool body of the utility model is:

a. Lifting well: collect and lift the sewage to a certain height to meet the subsequent process requirements;

b. Regulating pool: balance the water quality and quantity of sewage;

c. MBR pool: the main place for biochemical treatment, and also the place where the flat membrane MBR membrane module is placed. The sewage in the regulating tank is lifted from the sewage pump Ⅱ to the MBR pool. After aerobic aeration and biological treatment, the clean water passes through self-priming The pump pumps out into the middle water tank;

d. Residual pool: store treated clean water, equipped with a disinfection device.

The internal structure of the lifting well, the regulating tank and the intermediate water tank described in the utility model is the same as the existing lifting well, the regulating tank and the intermediate water tank, and the fine grid of the regulating tank and the specific structure of the automatic control system are also known technologies. I won't repeat them here.

Claims (6)

1. buried flat sheet membrane MBR waste disposal plant, it is characterized in that: comprise machine room (5), automatic control system (6) and the winding shaft (1) that is connected in turn by pipeline, equalizing tank (2), MBR pond (3) and middle pond (4), described winding shaft links to each other with external sewer line, described equalizing tank (2) is separately positioned on winding shaft (1) both sides with MBR pond (3), winding shaft top is separated to form machine room, be separated to form middle pond in the equalizing tank, described equalizing tank top is provided with fine fack (23), the equalizing tank bottom is provided with boring aeration pipe (24), be placed with at least 1 group flat sheet membrane MBR membrane module (31) in the described MBR pond (3), described winding shaft (1), equalizing tank (2), MBR pond (3), middle pond (4) and machine room (5) all are arranged at below ground, and automatic control system (6) is arranged on more than the ground.

2. a kind of buried flat sheet membrane MBR waste disposal plant according to claim 1, it is characterized in that: described winding shaft (1) is by sump pump I (11), winding shaft rising pipe (12) is communicated with equalizing tank (2), equalizing tank (2) is by sump pump II (21), equalizing tank rising pipe (22) is communicated with MBR pond (3), flat sheet membrane MBR membrane module (31) upper-part centralized water pipe (32) in the MBR pond passes through pipeline, vacuum primingpump (52) is communicated with middle pond (4), aeration tube in the equalizing tank (24) is connected with gas blower (51) by pipeline, the aeration tube (36) of flat sheet membrane MBR membrane module (31) bottom is connected with gas blower (51) by pipeline, be provided with fresh water pump (41) and the middle pond rising pipe (42) that is connected with fresh water pump in the middle pond, described gas blower (51) and vacuum primingpump (52) are placed in the machine room (5).

3. a kind of buried flat sheet membrane MBR waste disposal plant according to claim 1 and 2 is characterized in that: be arranged in parallel 2 group flat sheet membrane MBR membrane modules (31) in the described MBR pond (3) at least.

4. a kind of buried flat sheet membrane MBR waste disposal plant according to claim 1 and 2 is characterized in that: have the overflow port that is communicated with winding shaft (1) above the described MBR pond (3).

5. a kind of buried flat sheet membrane MBR waste disposal plant according to claim 2, it is characterized in that: the supporting sterilizing unit (7) that is provided with in described middle pond (4), the drug feeding pipeline (72) that the dosing pump (73) that described sterilizing unit comprises dosing tank (71), be communicated with dosing tank and an end are communicated with dosing pump, drug feeding pipeline (72) the other end is communicated with vacuum primingpump (52) outlet conduit, and dosing tank (71) and dosing pump (73) are positioned in the machine room (5).

6. a kind of buried flat sheet membrane MBR waste disposal plant according to claim 5, it is characterized in that: described sump pump I (11), sump pump II (21), fresh water pump (41), gas blower (51), vacuum primingpump (52), dosing pump (73) all are connected with automatic control system (6).

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