CN216191371U

CN216191371U - Power plant domestic sewage treatment aeration equipment and power plant domestic sewage treatment device

Info

Publication number: CN216191371U
Application number: CN202122856135.6U
Authority: CN
Inventors: 任伟超; 李峰; 王宇明; 方鹏; 李永超; 肖翔
Original assignee: Shanghai Shenneng Chongming Power Generation Co ltd
Current assignee: Shanghai Shenneng Chongming Power Generation Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-05
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses power plant domestic sewage treatment aeration equipment which comprises an aeration source, a compressed air storage tank, a pipe valve assembly and an aeration main pipe, wherein the aeration source is taken from power plant instrument gas, the compressed air storage tank and the pipe valve assembly are connected to the aeration main pipe, and the aeration main pipe is connected to an aeration port of a power plant domestic sewage biochemical pool. The utility model also discloses a power plant domestic sewage treatment device comprising the power plant domestic sewage treatment aeration equipment. The utility model solves the problems of larger energy consumption, large noise, low aeration efficiency and the like of the conventional domestic sewage treatment device aeration equipment.

Description

Power plant domestic sewage treatment aeration equipment and power plant domestic sewage treatment device

Technical Field

The utility model relates to the technical field of power plant domestic sewage treatment, in particular to power plant domestic sewage treatment aeration equipment and a power plant domestic sewage treatment device.

Background

At present, many domestic power plants are provided with self-contained domestic sewage treatment systems for treating domestic sewage generated in the production and living processes of the power plants, and the most common domestic sewage treatment principle at present is an activated sludge method. The activated sludge process is an aerobic biological treatment process for sewage, invented by Clark (Clark) and Gage (Gage) in 1912 of the uk. Nowadays, the activated sludge process and its derivative modified processes are the most widely used methods for treating municipal sewage. It can remove soluble and colloidal biochemical organic substances, suspended solids and other substances adsorbed by activated sludge from domestic sewage, and can remove a part of phosphorus and nitrogen. The process of removing various pollutants in sewage by adopting the method needs compressed air to enter the sewage for aeration, and the conventional aeration air source equipment is blast aeration equipment, typically represented by a Roots blower. Compressed air sent by the air blower enters the sewage in the form of fine bubbles through an air diffusion device paved at the bottom of the aeration tank, so that the dissolved oxygen content in the sewage is increased, and the mixed liquid is in a state of violent stirring to form a suspension state. The dissolved oxygen, the activated sludge and the sewage are mixed and fully contacted with each other, so that the activated sludge reaction can be normally carried out.

The aeration equipment of the domestic sewage treatment device adopted by the current power plant has the problems of high energy consumption, high noise, low aeration efficiency and the like.

Therefore, the technical personnel in the field are dedicated to develop the aeration equipment for treating the domestic sewage of the power plant and the device for treating the domestic sewage of the power plant, and the compressed gas (instrument gas) of the original compressed air system of the power plant is used as a new aeration source, and a pipeline is laid and connected to the aeration main pipe of the domestic sewage treatment device, so that the effects of improving the aeration efficiency of the domestic sewage treatment device, saving energy, reducing consumption and reducing noise pollution are achieved.

SUMMERY OF THE UTILITY MODEL

In view of the above defects in the prior art, the technical problem to be solved by the utility model is how to solve the problems of large energy consumption, large noise, low aeration efficiency and the like of the aeration equipment of the existing domestic sewage treatment device.

In order to achieve the purpose, the utility model provides power plant domestic sewage treatment aeration equipment which comprises an aeration source, a compressed air storage tank, a pipe valve assembly and an aeration main pipe, wherein the aeration source is taken from the gas used by a power plant instrument, the aeration source is connected to the aeration main pipe through the compressed air storage tank and the pipe valve assembly, and the aeration main pipe is connected to an aeration opening of a power plant domestic sewage biochemical pool.

Further, the pipe valve assembly comprises an isolation valve, a regulating valve and a pressure reducing valve, the isolation valve is connected to the compressed air storage tank through a first connecting pipe, the inlet of the regulating valve is connected to the isolation valve through a second connecting pipe, the outlet of the regulating valve is connected to the inlet of the pressure reducing valve through a third connecting pipe, and the outlet of the pressure reducing valve is connected to the aeration main pipe through a pipeline.

Further, the tubular valve assembly further comprises a safety valve piped to the aeration header, the safety valve configured to vent pressure relief when the pressure of the aeration header exceeds a pressure threshold.

Further, the pipe valve assembly further comprises a pressure measuring instrument, and the installation position of the pressure measuring instrument is located on the third connecting pipe.

Further, the pressure measuring instrument includes at least one of a pressure gauge and a pressure sensor.

Further, the pressure measuring instrument includes a pressure transmitter.

Further, the pressure gauge is configured to cooperate with the regulator valve to provide a preliminary controller air pressure.

Further, the pressure relief valve is configured to precisely regulate the instrument air pressure entering the aeration parent.

The utility model also provides a power plant domestic sewage treatment device which comprises the power plant domestic sewage treatment aeration equipment.

Further, a control system is included that is configured to control the tube valve assembly to regulate the instrument air pressure into the aeration parent tube.

The technical scheme of the utility model has the beneficial effects that:

1) the aeration equipment of the traditional domestic sewage treatment device is replaced by the original compressed air system of the power plant, so that the energy consumption can be greatly reduced, and the use cost of the Roots blower and other equipment is saved. Processing capacity of 10m in general³The domestic sewage treatment device needs to be provided with two Roots blowers with the power of 6kW for aeration. After the aeration of the compressed air system is changed, 144kWh of electric energy can be saved every day, and the treatment capacity is 10m³The domestic sewage treatment device can save about 4 ten thousand yuan of electric charge every year.

2) The environmental noise is reduced, most of the aeration devices are Roots blowers or other types of blowers at present, the noise is large during the operation of the equipment, and the noise in the 5m range of the equipment can reach 70 dB. After the compressed air system is changed into air supply, the noise source is only the friction sound between the compressed air and the pipeline, the noise near the domestic sewage treatment device is obviously reduced after the device is modified, and the system operation noise is less than 50 dB.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a schematic structural view of a domestic sewage treatment aeration apparatus for a power plant according to a preferred embodiment of the present invention.

Wherein, the aeration source is 1, the compressed air storage tank is 2, the domestic sewage aeration main pipe is 3, the isolation valve is 4, the regulating valve is 5, the pressure gauge is 6, the pressure reducing valve is 7, and the safety valve is 8.

Detailed Description

The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the utility model is not limited to the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

Example 1

As shown in figure 1, the embodiment provides a power plant's domestic sewage treatment aeration equipment, including aeration source 1, compressed air storage tank 2, the female pipe of domestic sewage aeration 3, aeration source 1 is taken from power plant's appearance gas (as the independent compressed air system of power plant, can provide pure steady voltage's compressed air for equipment), through compressed air storage tank 2, compressed air to domestic sewage treatment system aeration pipe connection to the female pipe of domestic sewage aeration 3, the female pipe of domestic sewage aeration 3 is connected to the biochemical pond of domestic sewage aeration of power plant gas port.

For convenience of equipment maintenance, the pipeline is provided with an isolation valve 4. The gauge air pressure may be initially controlled using a regulator valve 5 and a line pressure gauge 6. In some embodiments, regulator valve 5 and line pressure sensor or pressure transmitter primary controller air pressure may also be used. Aeration pressure undersize of the domestic sewage treatment device can lead to insufficient dissolved oxygen in the biochemical reaction tank, and overhigh pressure can blow away the activated sludge in the biochemical reaction tank to reduce the adsorption capacity and generate foam to lead to effluent water quality deterioration, so that a pressure reducing valve 7 is required to be arranged, the pressure reducing valve 7 is mainly used for accurately adjusting the instrument air pressure entering the domestic sewage aeration main pipe 3, and meanwhile, a safety valve 8 is additionally arranged to prevent overhigh instrument air pressure impact. The pipeline of the safety valve 8 is connected to the domestic sewage aeration main pipe 3, and when the pressure of the domestic sewage aeration main pipe 3 exceeds a pressure threshold value, the safety valve 8 is emptied and decompressed.

Example 2

The embodiment provides a power plant domestic sewage treatment device, which comprises the power plant domestic sewage treatment aeration equipment. Further, the power plant domestic sewage treatment device may further include a Control System, such as a Distributed Control System (DCS) or a Programmable Logic Controller (PLC) System, and the Control System may Control the pipe valve assembly to adjust the pressure of the instrument gas entering the aeration main pipe.

The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a power plant's domestic sewage treatment aeration equipment, its characterized in that includes aeration source, compressed air storage tank, pipe valve subassembly, the female pipe of aeration, the aeration source is got from power plant's appearance gas, warp compressed air storage tank, pipe valve subassembly are connected to the female pipe of aeration, the female union coupling of aeration is to power plant's domestic sewage biochemical pool aeration mouth.

2. The power plant domestic sewage treatment aeration apparatus of claim 1, wherein the pipe valve assembly comprises an isolation valve, a regulating valve, and a pressure reducing valve, the isolation valve is connected to the compressed air storage tank via a first connection pipe, the regulating valve inlet is connected to the isolation valve via a second connection pipe, the regulating valve outlet is connected to the pressure reducing valve inlet via a third connection pipe, and the pressure reducing valve outlet is piped to the aeration main pipe.

3. The power plant domestic sewage treatment aeration apparatus of claim 2, wherein the pipe valve assembly further comprises a safety valve piped to the aeration header, the safety valve configured to vent pressure relief when the pressure of the aeration header exceeds a pressure threshold.

4. The power plant domestic sewage treatment aeration apparatus of claim 3, wherein said pipe valve assembly further comprises a pressure gauge, said pressure gauge being mounted on said third nozzle.

5. The power plant domestic sewage treatment aeration apparatus of claim 4, wherein the pressure measurement instrument comprises at least one of a pressure gauge and a pressure sensor.

6. The power plant domestic sewage treatment aeration apparatus of claim 4, wherein the pressure measurement instrument comprises a pressure transducer.

7. The power plant domestic sewage treatment aeration apparatus of claim 4, wherein said pressure gauge is configured to cooperate with said regulator valve to provide a primary control gauge air pressure.

8. The power plant domestic sewage treatment aeration apparatus of claim 2, wherein the pressure relief valve is configured to precisely regulate an instrument gas pressure entering the aeration parent pipe.

9. A power plant domestic sewage treatment apparatus, characterized by comprising a power plant domestic sewage treatment aeration device according to any one of claims 1 to 8.

10. The power plant domestic sewage treatment unit of claim 9 further comprising a control system configured to control the pipe valve assembly to regulate the instrument air pressure entering the aeration parent pipe.