CN216614202U

CN216614202U - Sewage treatment advances water pre-aeration equipment

Info

Publication number: CN216614202U
Application number: CN202123080171.4U
Authority: CN
Inventors: 李小惠; 史帅; 戴俊; 冯洁; 董杰; 孙洪涛
Original assignee: Nanjing Chengzhi Yongqing Energy Technology Co ltd
Current assignee: Nanjing Chengzhi Yongqing Energy Technology Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-27
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a sewage treatment water inlet pre-aeration device which comprises a water inlet pipe of a sewage pool and is characterized by further comprising an air pipe, wherein a group of stirring pre-aeration heads are distributed on the water inlet pipe of the sewage pool and consist of a water inlet end, an air end and a release end, the water inlet end is connected with the water inlet pipe and provided with a nozzle, the air end is connected with the air pipe, and the release end is communicated with the sewage pool. The sewage treatment water inlet pre-aeration device can realize stirring and pre-aeration by using the sewage inlet excess pressure, and saves the operating cost of power equipment such as a stirrer and the like.

Description

Sewage treatment advances water pre-aeration equipment

Technical Field

The utility model belongs to the technical field of biochemical sewage treatment, and particularly relates to a sewage treatment water inlet pre-aeration device.

Background

The biochemical treatment of sewage is a process of purifying sewage by utilizing the metabolism of microorganisms in order to make the sewage meet the water quality requirement of discharging into a certain water body or reusing the sewage. Along with the increasing requirement of environmental protection, the effluent index is increased, the corresponding treatment cost is also increased, and energy conservation and environmental protection become one of the most important management contents of sewage treatment.

The activated sludge process removes dissolved and colloidal biodegradable organic matter from the wastewater as well as suspended solids and other materials that can be adsorbed by the activated sludge. The activated sludge process is essentially similar to the self-purification process of natural water bodies (rivers and lakes), both are aerobic biological processes, and the activated sludge process is artificial and strengthened for the self-purification effect of the natural water bodies. The activated sludge process employs an aerobic process, and a certain amount of Dissolved Oxygen (DO) must be maintained in the treatment process, requiring an aeration process.

Usually, the incoming water of the sewage treatment device is pressurized and conveyed by a pump station or a lift pump, so that the incoming water has certain residual pressure energy, and usually enters a sewage pool directly from a sewage pipe, which can cause residual pressure loss. Therefore, the device capable of recycling the water inlet excess pressure of the sewage treatment tank is designed, so that the energy can be effectively saved, and the operation cost is reduced.

Disclosure of Invention

The utility model aims to provide a sewage treatment water inlet pre-aeration device which can effectively recover the residual pressure of inlet water, pre-aerate a sewage tank and improve the aeration and stirring capacity of the sewage tank; and simultaneously, the concentration of the dissolved oxygen in the sewage tank is controlled through the air quantity.

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

the utility model provides a sewage treatment advances aeration equipment in advance, includes the inlet tube of effluent water sump, a serial communication port, the device still includes the air hose, the inlet tube on distribute and set up a set of stirring aeration head in advance, stirring aeration head in advance constitute by intaking end, air end, release end, it connects the inlet tube and sets up the nozzle to intake the end, the air end is connected the air hose, release end intercommunication effluent water sump.

The sewage treatment water inlet pre-aeration device is characterized in that the stirring pre-aeration head is arranged at the bottom of the sewage pool.

The sewage treatment water inlet pre-aeration device comprises an air pipe, a main pipe and branch pipes, wherein the branch pipes are arranged on the main pipe in parallel and are respectively connected with the air end of a stirring pre-aeration head.

The sewage treatment water inlet pre-aeration device has the water inlet residual pressure range of 0.2MPa to 0.6 MPa.

The sewage treatment water inlet pre-aeration device has the pressure range of 0MPa to 0.1MPa at the air inlet end of the air pipe.

The sewage treatment water inlet pre-aeration device is characterized in that a valve is arranged on an air pipe to adjust the flow of air in the device so as to control the concentration of dissolved oxygen in a sewage pool.

In the sewage treatment water inlet pre-aeration device, the pre-aeration amount is controlled to be 0.5 mg/L-2 mg/L of dissolved oxygen.

Has the advantages that: the sewage treatment pre-aeration device of the utility model is characterized in that the stirring pre-aeration heads are distributed on the water inlet pipe of the sewage tank, the stirring and pre-aeration are carried out by utilizing the excess pressure of the sewage inlet water, the dissolved oxygen concentration of the sewage tank is controlled by adjusting the air inflow amount, the excess pressure of the inlet water can be effectively recovered, the operating cost of power equipment such as an air blower, a stirrer and the like is saved, the energy is effectively saved, and the operating cost and the sewage treatment cost are reduced.

Drawings

FIG. 1 is a schematic view showing the construction of a pre-aeration apparatus for sewage treatment according to the present invention;

FIG. 2 is a schematic diagram of the structure of a stirring preaeration head;

in the figure, 1-air pipe valve, 2-air pipe, 3-water inlet pipe, 4-stirring preaeration head, 5-nozzle, 6-vacuum zone and 7-diffusion zone.

Detailed Description

The following detailed description of the embodiments of the present invention is provided, but it should be noted that the scope of the present invention is not limited by the embodiments, but is defined by the appended claims.

As shown in fig. 1, the stirring and pre-aeration device for sewage treatment of the present invention comprises a water inlet pipe 3 of a sewage tank, an air pipe 2 and a stirring and pre-aeration head 4, wherein the air pipe 2 comprises a main pipe and branch pipes arranged in parallel on the main pipe, a group of stirring and pre-aeration heads 4 are distributed and arranged on the water inlet pipe 3 positioned at the bottom of the sewage tank, the stirring and pre-aeration head 4 comprises a water inlet end, an air end and a release end, the water inlet end is provided with a nozzle 5, the water inlet end is connected with the water inlet pipe 3, the air end is respectively connected with the air pipe 2 through each branch pipe, and the release end is communicated with the sewage tank. Therefore, the stirring preaeration head 4 comprises a nozzle 5, a vacuum area 6 and a diffusion area 7.

The sewage treatment pre-aeration device is characterized in that when sewage with certain residual pressure enters the nozzle 5 at a certain flow rate to be pressurized, then enters the vacuum area 6 to be released to generate vacuum, the vacuum area 6 sucks air and then is mixed with the sewage, and then the sewage is pressurized and released to a sewage pool in the diffusion area 7.

Furthermore, in order to realize the sufficient stirring and pre-aeration of the sewage, the sewage treatment water inlet pre-aeration device has the water inlet residual pressure range of 0.2MPa to 0.6MPa of the water inlet pipe 3.

Further, the sewage treatment inlet pre-aeration device can be connected with the atmosphere at the air inlet end of the air pipe 2 or introduce compressed air with a certain pressure, and preferably, the pressure range of the air inlet end of the air pipe 2 is 0MPa (reference atmospheric pressure) to 0.1 MPa.

Furthermore, the sewage treatment inlet pre-aeration device is characterized in that the air pipe 2 is provided with an air pipe valve 1 so as to adjust the flow of air in the device and control the concentration of dissolved oxygen in the sewage tank. The pre-aeration amount is controlled to be 0.5mg/L to 2mg/L of dissolved oxygen.

The sewage treatment water inlet pre-aeration device can realize stirring and pre-aeration of sewage by using sewage inlet excess pressure, and plays a role in controlling dissolved oxygen in a sewage tank by adjusting the opening of the air pipe valve 1 to adjust the air flow of the pre-aeration device.

Claims

1. The utility model provides a sewage treatment advances aeration equipment in advance, includes inlet tube (3) of effluent water sump, its characterized in that, the device still includes air hose (2), inlet tube (3) on distribute and set up a set of stirring aeration head (4) in advance, the stirring aeration head (4) intake end, air end, release end constitute in advance, intake end connection inlet tube (3) and set up nozzle (5), air hose (2) are connected to the air end, release end intercommunication effluent water sump.

2. The sewage treatment inlet water pre-aeration apparatus according to claim 1, wherein the stirring pre-aeration head (4) is disposed at the bottom of the sewage tank.

3. The sewage treatment inflow pre-aeration apparatus according to claim 1, wherein the air pipe (2) comprises a main pipe and branch pipes arranged in parallel on the main pipe, and the branch pipes are respectively connected with the air ends of the stirring pre-aeration heads (4).

4. The sewage treatment inflow pre-aeration device according to claim 1, wherein the inflow residual pressure of the inlet pipe (3) ranges from 0.2MPa to 0.6 MPa.

5. The sewage treatment inflow pre-aeration apparatus according to claim 1, wherein the pressure at the inlet end of the air pipe (2) ranges from 0MPa to 0.1 MPa.

6. A sewage treatment inlet water pre-aeration device according to claim 1, characterized in that the air pipe (2) is provided with a valve (1).

7. The sewage treatment inflow pre-aeration apparatus according to claim 1, wherein the amount of pre-aeration in the sewage treatment inflow pre-aeration apparatus is controlled to be 0.5mg/L to 2mg/L of dissolved oxygen.