CN211339187U

CN211339187U - Air stripping formula backward flow integrates MBR sewage treatment device

Info

Publication number: CN211339187U
Application number: CN201921707706.6U
Authority: CN
Inventors: 李梦娇; 陈秀鹃; 黄伟初; 周晓梅
Original assignee: KUNMING JINZE INDUSTRIAL CO LTD
Current assignee: KUNMING JINZE INDUSTRIAL CO LTD
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-08-25
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses an air stripping formula backward flow MBR sewage treatment device that integrates, including MBR biochemical reaction pond, MBR biochemical reaction pond is including anaerobic reaction pond, oxygen deficiency reaction tank and the aerobic reaction pond that sets gradually, be equipped with the multiple spot back flow that feeds through anaerobic reaction pond and oxygen deficiency reaction pond in the aerobic reaction pond, anaerobic reaction pond one side is kept away from in the aerobic reaction pond and is equipped with the disinfection pond, be equipped with the MBR membrane module in the aerobic reaction pond, aerobic reaction pond MBR membrane module even has the self priming pump, and the self priming pump passes through tube coupling to the disinfection pond. The utility model discloses air stripping reflux unit has replaced traditional water pump backward flow mode, reduces mechanical equipment's input, effectively utilizes the unnecessary amount of wind of fan, reduces the working costs, and the requirement of technology to nitrogen and phosphorus removal is guaranteed to the mode of multiple spot backward flow to can adjust the backward flow volume in a flexible way through the operational aspect, with disinfection pond and control system integration in biochemical reaction pond, the effectual construction investment that has reduced the civil engineering.

Description

Air stripping formula backward flow integrates MBR sewage treatment device

Technical Field

The utility model relates to a sewage treatment technical field especially relates to an air stripping formula backward flow integrates MBR sewage treatment device.

Background

At present, most domestic sewage needs to reach the first-level A standard of pollutant discharge standard of urban sewage treatment plants, is directly discharged or reaches the corresponding reuse water standard for reuse, has higher requirement on sewage treatment, and the commonly used small-sized integrated equipment mainly adopts a process taking MBR as a core. MBR, also called membrane bioreactor, is a new water treatment technology combining activated sludge process and membrane separation technology. The traditional activated sludge method is to separate sludge and water (activated sludge and water) by utilizing the density difference between microorganisms and water in a gravity settling mode, the settling mode is greatly influenced by the quality change of inlet water and the properties of activated sludge, the quality of treated outlet water is unstable, the above problems can be solved by an MBR process, and the stability of the quality of the outlet water is ensured. The MBR has high-efficiency interception and separation effects, so that the hydraulic retention time and the sludge retention time are completely separated, the concentration of microorganisms in the reactor is improved, the suspended matters and turbidity of the effluent are close to zero, and the treated water can be directly recycled after being disinfected.

At present, integrated MBR domestic sewage treatment equipment is mostly adopted for scattered living factories with less domestic sewage production in rural areas, hotels, scenic spots and the like, so that the civil engineering investment is saved, the construction period is short, the operation is simple and convenient, and the method has incomparable advantages. However, the disinfection tank is complicated to build and large in investment, the disinfection tank is built independently to increase the occupied area of a domestic sewage treatment system, a water pump is adopted to carry out mixed liquid backflow to increase energy consumption, and the mixed liquid backflow is generally only refluxed to one reaction tank by using gas stripping backflow. Therefore, an air stripping type backflow integrated MBR sewage treatment device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an air-lift type reflux integrated MBR sewage treatment device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an air lift formula backward flow integrates MBR sewage treatment device, includes MBR biochemical reaction pond, MBR biochemical reaction pond is including anaerobic reaction pond, oxygen deficiency reaction pond and the aerobic reaction pond that sets gradually, be equipped with the multiple spot back flow of intercommunication anaerobic reaction pond and oxygen deficiency reaction pond in the aerobic reaction pond, anaerobic reaction pond one side is kept away from in the aerobic reaction pond and is equipped with the disinfection pond, be equipped with the MBR membrane module in the aerobic reaction pond, aerobic reaction pond MBR membrane module even has the self priming pump, and the self priming pump passes through pipe connection to the disinfection pond, disinfection pond top is equipped with the fan, and fan one end is connected with the gas reflux air supply pipe, the butt clamp is provided with the air feed pipe valve on the gas reflux air supply pipe, gas reflux air supply pipe one end is pegged graft with.

Preferably, a water outlet of the disinfection tank is arranged at the top of the disinfection tank.

Preferably, disinfection pond baffles that the equidistance distributes are arranged inside the disinfection pond, and the disinfection pond baffles are staggered, and a gap is left between the disinfection pond baffles and one side of the disinfection pond.

Preferably, a disinfection tank water inlet is formed in the position, close to one corner, of the outer wall of the top end of the disinfection tank.

Preferably, the multipoint return pipe comprises a vertical section, one side of the vertical section is connected with a transverse pipe, return ports distributed at equal intervals are formed in the transverse pipe, and a bent pipe extending in an upward bending mode is arranged at the bottom of the side wall of the vertical section.

The utility model has the advantages that:

the gas stripping reflux device replaces the traditional water pump reflux mode, reduces the investment of mechanical equipment, effectively utilizes the redundant air quantity of a fan, reduces the operating cost, ensures the requirements of the process on nitrogen and phosphorus removal by a multipoint reflux mode, can flexibly adjust the reflux quantity through the operating condition, integrates a disinfection tank and a control system in a biochemical reaction tank, effectively reduces the construction investment of civil engineering, and is quick to install.

Drawings

FIG. 1 is a schematic view of a cross-sectional structure of an air stripping type reflux integrated MBR sewage treatment device provided by the utility model;

fig. 2 is the utility model provides a structural schematic that overlooks of MBR sewage treatment plant disinfection pond is integrated in air stripping formula backward flow.

In the figure: 1 anaerobic reaction pond, 2 multiple spot back flows, 3 multiple spot back flows, 4 air feed pipe valves, 5 fans, 6 self priming pumps, 7 disinfection ponds, 8 disinfection pond baffles, 9 aerobic reaction ponds, 10 disinfection pond delivery ports, 11 oxygen deficiency reaction ponds, 12 disinfection pond water inlets.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, an air lift formula backward flow integrates MBR sewage treatment device, including MBR biochemical reaction pond, MBR biochemical reaction pond is including the anaerobic reaction pond 1 that sets gradually, oxygen deficiency reaction pond 11 and aerobic reaction pond 9, is equipped with intercommunication anaerobic reaction pond 1 and the multiple spot back flow 2 of oxygen deficiency reaction pond 11 in the aerobic reaction pond 9, and aerobic reaction pond 9 is kept away from anaerobic reaction pond 1 one side and is equipped with disinfection pond 7, is equipped with the MBR membrane module in the aerobic reaction pond 9, 8MBR membrane modules in aerobic reaction pond even have self priming pump 6, and self priming pump 6 passes through pipe connection to disinfection pond 7, and disinfection pond 7 top is equipped with fan 5, and 5 one end of fan is connected with gas reflux air supply pipe 3, and gas reflux air supply pipe 3 goes up the butt clamp and is provided with air supply valve 4, and gas reflux air supply pipe 3 one end is pegged.

The utility model discloses in, 7 pond top positions in disinfection pond department are equipped with disinfection

pond delivery port

10, 7 inside disinfection pond baffles 8 that are equipped with the equidistance and distribute in disinfection pond, and the crisscross setting of disinfection pond baffle 8, disinfection pond baffle 8 leaves the clearance on one side with

disinfection pond

7, 7 top outer walls in disinfection pond are close to one of them turning position department and are equipped with disinfection pond water inlet 12, multiple spot back flow 2 includes vertical section, and vertical section one side is connected with violently the pipe, violently be equipped with the backward flow mouth that the equidistance distributes on the pipe, vertical section lateral wall bottom position department is equipped with the return bend that upwards buckles and extend.

Sewage enters an anaerobic reaction tank 1 of an MBR biochemical reaction tank through a lift pump, is mixed with mixed liquid containing activated sludge which flows back through air stripping, phosphorus release and organic matter degradation are carried out under anaerobic conditions, then the sewage enters an anoxic reaction tank 11, is mixed with the returned mixed liquid, is subjected to denitrification denitrogenation in an anoxic state, is simultaneously subjected to organic matter degradation, then the sewage enters an aerobic reaction tank 9, has higher activated sludge concentration in the aerobic reaction tank 9 (the activated sludge concentration in the mixed liquid is improved by the interception effect of the MBR), phosphorus absorption and organic matter efficient degradation are carried out in the aerobic reaction tank 9, a gas return air supply pipe 3 and a multi-point return pipe 2 which are arranged in the aerobic reaction tank 9 cooperate, air is supplied through a fan 5, the liquid level of the mixed liquid in the device is lifted by the thrust of air, and the mixed liquid can flow back through the multi-point return pipe 2, the multi-point backflow is carried out, the requirements of denitrification, dephosphorization and organic matter degradation of a biochemical system are met, the total backflow amount of mixed liquid can be adjusted through the air supply amount of the fan 5, the backflow amount of the mixed liquid flowing back to the anaerobic reaction tank 1 and the anoxic reaction tank 11 is controlled through valves on the multi-point backflow pipes 2 above the tanks, the treated sewage flows out through the MBR membrane module through the self-priming pump 6, the disinfectant is added through a pipeline before entering the disinfection tank 7, the effluent and the disinfectant are fully mixed in the disinfection tank 7 and stay for more than 30min, and then the effluent and the disinfectant are discharged out of equipment for recycling or discharging.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an air lift formula backward flow integrates MBR sewage treatment device, includes MBR biochemical reaction pond, its characterized in that, MBR biochemical reaction pond is including anaerobic reaction pond (1), oxygen deficiency reaction pond (11) and aerobic reaction pond (9) that set gradually, be equipped with multiple spot back flow (2) that communicate anaerobic reaction pond (1) and oxygen deficiency reaction pond (11) in aerobic reaction pond (9), aerobic reaction pond (9) keep away from anaerobic reaction pond (1) one side and are equipped with disinfection pond (7), be equipped with the MBR membrane module in aerobic reaction pond (9), aerobic reaction pond (9) MBR membrane module even has self priming pump (6), and self priming pump (6) are connected to disinfection pond (7) through the pipeline, disinfection pond (7) top is equipped with fan (5), and fan (5) one end is connected with gaseous backward flow air supply pipe (3), gaseous backward flow air supply pipe (3) are gone up to pressing from both sides and are provided with air feed pipe valve (4), one end of the gas reflux and supply pipe (3) is inserted with one end of the multipoint reflux pipe (2).

2. The air stripping type reflux integrated MBR sewage treatment device as set forth in claim 1, wherein a disinfection tank water outlet (10) is arranged at the top position of the disinfection tank (7).

3. The air stripping type reflux integrated MBR sewage treatment device as set forth in claim 2, wherein disinfection tank partition plates (8) are arranged in the disinfection tank (7) at equal intervals, and the disinfection tank partition plates (8) are arranged in a staggered manner, and a gap is left between the disinfection tank partition plates (8) and one side of the disinfection tank (7).

4. The air stripping type reflux integrated MBR sewage treatment device as claimed in claim 3, wherein the top outer wall of the disinfection tank (7) is provided with a disinfection tank water inlet (12) near one of the corners.

5. The air lift type reflux integrated MBR sewage treatment device according to claim 4, wherein the multipoint reflux pipe (2) comprises a vertical section, a horizontal pipe is connected to one side of the vertical section, reflux ports are distributed on the horizontal pipe at equal intervals, and a bent pipe which is bent upwards and extends is arranged at the bottom of the side wall of the vertical section.