CN215947049U

CN215947049U - Integrated domestic sewage treatment equipment

Info

Publication number: CN215947049U
Application number: CN202121837451.2U
Authority: CN
Inventors: 李燕平; 张建宏
Original assignee: Xiangtan Environmental Water Investment Co ltd
Current assignee: Xiangtan Environmental Water Investment Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-03-04
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to environment-friendly equipment, in particular to integrated domestic sewage treatment equipment. The device is arranged in a secondary sedimentation tank at the rear end of an anaerobic tank, an anoxic tank and an aerobic tank, domestic sewage is introduced into a water inlet channel through an inlet pipeline, the horizontal section of the water inlet channel is U-shaped and is distributed on three side walls at the upper part of the secondary sedimentation tank, and a plurality of guide pipes leading to the bottom of the secondary sedimentation tank are arranged at the bottom of the water inlet channel; and a water outlet channel is arranged on the other side of the upper part of the secondary sedimentation tank without the water inlet channel, and water in the water outlet channel is delivered to the water outlet through a water outlet pipeline after passing through a pipeline pump and a laminated filter. The design scheme of A2O + a perimeter inlet and outlet type precipitation mode + a laminated filter is adopted, so that the operation energy consumption is low; the dissolved oxygen is controllable, and the total nitrogen removal effect is ensured; the system has the advantages of high efficiency, low backwashing water consumption, small system pressure loss and full-automatic operation; the filter element does not need to be replaced all the year round, and the replacement cost is low; overcomes the defects of the MBR membrane bioreactor.

Description

Integrated domestic sewage treatment equipment

Technical Field

The utility model relates to environment-friendly equipment, in particular to integrated domestic sewage treatment equipment.

Background

At present, the existing integrated domestic sewage treatment equipment adopts an MBR (membrane bioreactor) to remove BOD5, COD, NH3-N and the like in a centralized manner, and has the defects of easy membrane pollution, high operation energy consumption, high membrane use and replacement cost, difficult maintenance and influenced total nitrogen removal.

Disclosure of Invention

The utility model aims to provide an integrated domestic sewage treatment device, which aims to overcome the defects of high energy consumption, difficult maintenance, high membrane use and replacement cost and influence on total nitrogen removal in the background technology.

The purpose of the utility model is realized by the following ways: an integrated domestic sewage treatment device is arranged in a secondary sedimentation tank at the rear end of an anaerobic tank, an anoxic tank and an aerobic tank, the domestic sewage after anaerobic, anoxic and aerobic treatment is introduced into a water inlet channel through an inlet pipeline, the horizontal section of the water inlet channel is U-shaped and is distributed on three side walls at the upper part of the secondary sedimentation tank, and the bottom of the water inlet channel is provided with a plurality of guide pipes leading to the bottom of the secondary sedimentation tank; a water outlet channel is arranged on the other side of the upper part of the secondary sedimentation tank without the water inlet channel, and water in the water outlet channel is delivered to a water outlet through a water outlet pipeline after passing through a pipeline pump and a laminated filter; the center of the secondary sedimentation tank is provided with a mud scraping device, and a mud collecting groove is arranged below the mud scraping device.

As a further optimization of the scheme, the mud scraping device is characterized in that a driving device is arranged above the secondary sedimentation tank, the driving device is connected with and drives the main shaft to rotate, and the mud scraping plate is arranged at the bottom of the main shaft.

As a further optimization of the scheme, the sludge collecting groove is communicated with the anaerobic tank through a return sludge pipeline and a return sludge pump.

As a further optimization of the scheme, a reflecting baffle is arranged below the outlet of the guide pipe.

Compared with the prior art, the integrated domestic sewage treatment equipment adopts the design scheme of A2O + a week inlet and outlet type precipitation mode + a laminated filter, and has low operation energy consumption; the dissolved oxygen is controllable, and the total nitrogen removal effect is ensured; the system has the advantages of high efficiency, low backwashing water consumption, small system pressure loss and full-automatic operation; the filter element does not need to be replaced all the year round, and the replacement cost is low; overcomes the defects of the MBR membrane bioreactor.

Drawings

The utility model is described in further detail below with reference to the accompanying drawings:

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic view of a path of water flow in use of the present invention;

in the figure, a pipeline 1, an inlet channel 2, a motor 3, an outlet channel 4, a guide pipe 5, a main shaft 6, a reflecting baffle 7, a sludge collecting groove 8, a mud scraping plate 9, a pipeline pump 10, a laminated filter 11, a return sludge pipeline 12, a return sludge pump 13, an aerobic tank 14, an outlet pipeline 15, a water outlet 16, a secondary sedimentation tank 17, an anaerobic tank 18 and an anoxic tank 19.

Detailed Description

As shown in fig. 1 and 2, the integrated domestic sewage treatment equipment of the utility model is arranged in a secondary sedimentation tank 17 at the rear end of an anaerobic tank 18, an anoxic tank 19 and an aerobic tank 14, the domestic sewage after anaerobic, anoxic and aerobic treatment is introduced into an inlet channel 2 through an inlet pipeline 1, the horizontal section of the inlet channel is U-shaped and is distributed on three side walls at the upper part of the secondary sedimentation tank, and a plurality of guide pipes 5 leading to the bottom of the secondary sedimentation tank are arranged at the bottom of the inlet channel, so that solid deposition at the bottom of the channel is prevented, and the 'spraying' effect and rotational flow of water flow entering the secondary sedimentation tank are eliminated. A reflecting baffle 7 is arranged below the outlet of the guide pipe to play a role of reducing the water flow speed, and the separated clear liquid forwards and upwards reaches the water outlet channel. The other side of the upper part of the secondary sedimentation tank without the water inlet channel is provided with a water outlet channel 4, water in the water outlet channel is sent to a water outlet 16 through a water outlet pipeline 15 by a pipeline pump 10 and a laminated filter 11, the laminated filter is a filtering system with laminated discs with grooves on two sides, solid in water is intercepted, the pipeline pump is used for ensuring that the working pressure of the filtering system is maintained at 0.2-0.8 Mpa, and SS (suspended solid) of water discharged by the 11 laminated filter is less than 10 mg/L;

the center of the secondary sedimentation tank is provided with a mud scraping device which plays a role of collecting mud, and a mud collecting groove 8 is arranged below the mud scraping device. The mud scraping device is characterized in that a motor 3 is arranged above the secondary sedimentation tank, the motor is connected with a main shaft 6 to rotate, and a mud scraping plate 9 is arranged at the bottom of the main shaft. The mud scraping plate is parallel to the bottom of the pool and made of rubber materials, and the rubber mud scraping plate is in contact with the bottom surface of the pool. When the sludge scraping device works, the central shaft is driven to rotate by the central driving device, so that the sludge scraping arm frame drives the sludge scraping plate to slowly rotate at the linear speed of 2.34m/min, the sludge precipitated at the bottom of the tank is scraped to the sludge collecting pit at the center of the bottom of the tank by the scraping plate, and the sludge is discharged out of the tank through the central sludge discharge pipe under the static pressure of water.

The sludge collecting groove is communicated with the anaerobic tank through a return sludge pipeline 12 and a return sludge pump 13 so as to keep the number of microorganisms in the biochemical tank to carry out nitrification and denitrification reaction.

As shown in figure 3, the integrated domestic sewage treatment equipment of the utility model introduces the domestic sewage treated by anaerobic treatment, anoxic treatment and aerobic treatment into an inlet channel along the secondary sedimentation tank body, and the inlet channel is designed to be variable in section along the water inlet direction, so that the water flow of the water tank has approximately equal flow velocity, and the activated sludge is prevented from being deposited in the inlet channel. The water distribution holes are designed according to the hydraulics theory and are matched with corresponding drainage tubes to guide water flow to flow downwards into the bottom of the water pool. The lower part of the drainage tube is provided with a reflecting baffle plate to eliminate the kinetic energy of inflow water and reduce the water flow speed, the inflow water is introduced below a sludge layer, and sludge particles in the water are finally precipitated by effectively slowing down and catching the inflow water by utilizing the sludge blanket effect of the precipitated sludge to form solid-liquid separation. The sludge is scraped to the central sludge collecting groove by the central rotating sludge scraper, and is discharged out of the pond through the sludge discharge pipe by means of the water pressure in the pond. The main shaft is driven by a peripheral motor to run along the top of the tank at a linear speed of 2.0m/min by taking the central rotating support as an axis, and the lower part of the main shaft is connected with a bracket and a mud scraper. The solid sludge is collected and discharged from the return sludge pipeline. The separated clarified liquid moves forward and upward due to the smaller inertia and specific gravity and reaches the water outlet channel at the other side of the water pool. And finally, the water is filtered by a lamination filter and then is delivered to a water outlet.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be made by those skilled in the art without inventive work within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides an integration treatment of domestic sewage equipment, this equipment is installed in two heavy ponds (17) of anaerobism pond (18), oxygen deficiency pond (19), good oxygen pond (14) rear end, its characterized in that: introducing the domestic sewage subjected to anaerobic, anoxic and aerobic treatment into a water inlet channel (2) through an inlet pipeline (1), wherein the horizontal section of the water inlet channel is U-shaped and is distributed on three side walls at the upper part of a secondary sedimentation tank, and the bottom of the water inlet channel is provided with a plurality of guide pipes (5) leading to the bottom of the secondary sedimentation tank; the other side of the upper part of the secondary sedimentation tank which is not provided with the water inlet channel is provided with a water outlet channel (4), and water in the water outlet channel is sent to a water outlet (16) through a water outlet pipeline (15) by a pipeline pump (10) and a laminated filter (11); the center of the secondary sedimentation tank is provided with a mud scraping device, and a mud collecting groove (8) is arranged below the mud scraping device.

2. The integrated domestic sewage treatment apparatus according to claim 1, wherein: the mud scraping device is characterized in that a motor (3) is arranged above the secondary sedimentation tank, the motor is connected with a main shaft (6) to rotate, and a mud scraping plate (9) is arranged at the bottom of the main shaft.

3. The integrated domestic sewage treatment apparatus according to claim 1, wherein: the sludge collecting groove is communicated with the anaerobic tank through a return sludge pipeline (12) and a return sludge pump (13).

4. The integrated domestic sewage treatment apparatus according to claim 1, wherein: a reflecting baffle (7) is arranged below the outlet of the guide pipe.