CN214327269U

CN214327269U - Multistage oxygen deficiency aerobic treatment device based on MABR

Info

Publication number: CN214327269U
Application number: CN202022118769.7U
Authority: CN
Inventors: 刘胜军; 田忠艳; 王国锋; 刘雅楠; 曹翠翠; 赵亚男; 赵鹤; 闫晓军
Original assignee: Tianjin Yide Water Engineering Co ltd; TIANJIN HYDROKING SCI & TECH Ltd
Current assignee: Tianjin Yide Water Engineering Co ltd; TIANJIN HYDROKING SCI & TECH Ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-10-01
Anticipated expiration: 2030-09-24

Abstract

The utility model relates to a multistage oxygen deficiency aerobic treatment device based on MABR relates to water treatment technical field, the utility model discloses a processing apparatus includes that inlet tube, anaerobism pond, one-level MbAO combination, second grade MbAO combination, tertiary MbAO combination and delivery port constitute. The utility model discloses oxygen high-usage, pollutant removal rate are high, the flexibility is strong, easy operation, running cost low, the maintenance of being convenient for.

Description

Multistage oxygen deficiency aerobic treatment device based on MABR

Technical Field

The utility model belongs to the technical field of sewage treatment, a multistage oxygen deficiency aerobic treatment device based on MABR is related to. MABR, also known as enhanced coupled Biofilm Reactor (EHBR), is known by the English name of Membrane affected Biofilm Reactor.

Background

An activated sludge process in the current urban sewage treatment is improved by utilizing a short-cut nitrification and denitrification process or a multi-stage anaerobic anoxic and aerobic process, an MABR area is arranged in a patent CN109650541B 'sewage treatment method based on multi-stage A/O and MABR', an MABR membrane is wound on the surface of a water pipeline, and the water pipeline provides a certain fixing and supporting effect for the MABR membrane, but the contact of the MABR membrane and pollutants of a water body is reduced in a certain sense, and the use effect of the MABR membrane is limited.

Based on this, how to effectively combine the multi-stage AO process and the MABR process to form a multi-stage AO and MABR processing apparatus is a problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a overcome not enough among the prior art, provide a multistage oxygen deficiency aerobic treatment device based on MABR, combine together MABR technique and multistage oxygen deficiency good oxygen (MAO) technology effectively, realize realizing the device that multistage oxygen deficiency good oxygen coexisted in same reaction unit.

The specific technical scheme is as follows:

a multi-stage anoxic and aerobic treatment device based on MABR comprises a water inlet pipe, an anaerobic tank, a first-stage MbAO combination, a second-stage MbAO combination, a third-stage MbAO combination, an aerobic return channel and a water outlet. The method is characterized in that: the water inlet pipe (1), the anaerobic tank (4), the primary MbAO combination (3), the secondary MbAO combination (5), the tertiary MbAO combination and the water outlet (7) are connected in sequence; the aerobic return canal (8) is connected with the three-stage MbAO combination (6) and the first-stage MbAO combination (3).

The primary MbAO combination comprises an anoxic pond and an aerobic pond, wherein an MABR treatment area is arranged in the anoxic pond and is arranged at the front end of the traditional anoxic pond, more than one group of MABR membrane assemblies are arranged in the MABR treatment area, the DO content in water in the MABR treatment area along the water flow direction is decreased progressively, and a secondary MbAO combination and a tertiary MbAO combination are designed in sequence.

The primary MbAO combination enters the secondary MbAO combination in sequence after the effluent of the aerobic pool is mixed with the anaerobic influent at the front end of the secondary MbAO combination, and the secondary MbAO combination and the tertiary MbAO combination are designed in sequence.

And part of the effluent of the aerobic tank of the three-stage MbAO combination flows back to the water inlet end of the first-stage MbAO combination through the aerobic return channel, and the rest part of the effluent is discharged into a sedimentation tank outside the system through the water outlet.

The utility model discloses a multistage oxygen deficiency aerobic treatment device based on MABR reforms transform at the back at the anaerobism pond, adds MABR treatment tank in multistage AO technology, utilizes the adjustability of MABR technique dissolved oxygen for MABR treatment area is in anaerobism, oxygen deficiency or aerobic one or several kinds of processing states, realizes MABR technique and multistage oxygen deficiency aerobic treatment and combines together, more is favorable to getting rid of the pollutant. The utility model discloses oxygen high-usage, pollutant removal rate are high, the flexibility is strong, easy operation, running cost low, the maintenance of being convenient for.

Drawings

FIG. 1 is a schematic view of the process of the present invention.

Fig. 2 is a schematic plane structure diagram of the present invention.

In the figure: 1. the system comprises a water inlet pipe, 2 a water quantity regulator, 3 a first-stage MbAO combination, 4 an anaerobic pool, 5 a second-stage MbAO combination, 6 a third-stage MbAO combination, 7 a water outlet, 8 an aerobic return canal.

Detailed Description

The multi-stage anoxic and aerobic treatment apparatus based on MABR of the present invention will be further described with reference to FIGS. 1 to 2.

A multistage oxygen deficiency aerobic treatment device based on MABR comprises a water inlet pipe 1, an anaerobic tank 4, a first-stage MbAO combination 3, a second-stage MbAO combination 5, a third-stage MbAO combination 6, an aerobic return channel 8 and a water outlet 7, and is characterized in that: sewage enters an anaerobic tank 4 through a water inlet pipe, enters a primary MbAO combination 3, a secondary MbAO combination 5 and a tertiary MbAO combination 6 in a grading manner through a water quantity regulator, and the treated water body is discharged out of the system from a water outlet 7.

The primary MbAO combination 3 comprises an anoxic pond and an aerobic pond, wherein an MABR treatment area is arranged in the anoxic pond and is arranged at the front end of the traditional anoxic pond, more than one group of MABR membrane assemblies are arranged in the MABR treatment area, the DO content in water in the MABR treatment area along the water flow direction is decreased progressively, and a secondary MbAO combination 5 and a tertiary MbAO combination 6 are sequentially designed.

The primary MbAO combination 3 enters the secondary MbAO combination 5 in sequence after the effluent of the aerobic pool enters and is mixed with the anaerobic influent at the front end of the secondary MbAO combination 5, and the secondary MbAO combination 5 and the tertiary MbAO combination 6 are designed in sequence.

Part of the effluent of the aerobic tank of the three-stage MbAO combination 6 flows back to the water inlet end of the first-stage MbAO combination 3 through an aerobic return channel 8, and the rest part of the effluent is discharged into a sedimentation tank outside the system through a water outlet 7.

A method of a multistage anoxic and aerobic treatment device based on MABR can form different process flows according to different functions of MABR treatment areas. The following is explained by means of an embodiment, but the function of the MABR handling area is not limited to this embodiment.

Example 1: the MABR treatment zone is set to be anoxic at the front end and the rear end, and the multistage anoxic and aerobic treatment device based on the MABR comprises the following specific steps:

the water outlet of the anaerobic pool 4 is regulated by the water quantity regulator 2 to enter a primary MbAO combination 3, a secondary MbAO combination 5 and a tertiary MbAO combination 6, wherein the water inlet flow quantities are respectively recorded as Q1, Q2 and Q3, the total water inlet quantity is Q = Q1+ Q2+ Q3, and Q3=5% -10% Q.

The MABR treatment area is arranged at the front end of the anoxic tank and forms a whole with the traditional anoxic tank, the MABR treatment area is set to be anoxic at the front end and the back end by adjusting the dissolved oxygen content of the air supply of the MABR treatment area, the effluent Q1 of the aerobic tank of the primary MbAO combination 3 is mixed with the anaerobic influent Q2 of the secondary MbAO combination 5 and then enters the secondary MbAO combination 5, the effluent Q2 of the aerobic tank of the secondary MbAO combination 5 is mixed with the anaerobic influent Q3 of the tertiary MbAO combination 6 and then enters the tertiary MbAO combination 6, part of the effluent of the aerobic tank of the tertiary MbAO combination 6 flows back to the water inlet end of the primary MbAO combination 3 through the aerobic return channel 8, and the rest part of the effluent is discharged through the water outlet 7 and enters the sedimentation tank outside the system.

In the above embodiment, the water inlet flow of the three-stage MbAO combination 6 can be adjusted according to the process requirements, generally set to Q3=5% -10% Q, and the nitrified liquid flow of the nitrified liquid reflux is adjusted according to the requirements of the MABR treatment tank.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A multi-stage anoxic and aerobic treatment device based on MABR is composed of a water inlet pipe (1), an anaerobic tank (4), a primary MbAO combination (3), a secondary MbAO combination (5), a tertiary MbAO combination (6), an aerobic return channel (8) and a water outlet (7); the method is characterized in that: the water inlet pipe (1), the anaerobic tank (4), the primary MbAO combination (3), the secondary MbAO combination (5), the tertiary MbAO combination and the water outlet (7) are connected in sequence; the aerobic return canal (8) is connected with the three-stage MbAO combination (6) and the first-stage MbAO combination (3).

2. The MABR-based multi-stage anoxic-aerobic treatment apparatus according to claim 1, wherein: the primary MbAO combination (3) comprises an anoxic pond and an aerobic pond, wherein an MABR treatment area is arranged in the anoxic pond and is arranged at the front end of the traditional anoxic pond, more than one group of MABR membrane assemblies are arranged in the MABR treatment area, the DO content in water in the MABR treatment area along the water flow direction is gradually reduced, and a secondary MbAO combination (5) and a tertiary MbAO combination (6) are sequentially designed.

3. The MABR-based multi-stage anoxic-aerobic treatment apparatus according to claim 1, wherein: the primary MbAO combination (3) enters the secondary MbAO combination (5) in sequence after the effluent of the aerobic pool is mixed with the anaerobic influent at the front end of the secondary MbAO combination (5), and the secondary MbAO combination (5) and the tertiary MbAO combination (6) are designed in sequence.

4. The MABR-based multi-stage anoxic-aerobic treatment apparatus according to claim 1, wherein: part of the effluent of the aerobic tank of the three-stage MbAO combination (6) flows back to the water inlet end of the first-stage MbAO combination (3) through an aerobic return channel (8), and the rest part of the effluent is discharged into a sedimentation tank outside the system through a water outlet (7).