SBR (Sequencing Batch Reactor) equipment for rural domestic sewage treatment

Abstract

The utility model discloses SBR (sequencing batch reactor) equipment for rural domestic sewage treatment, which comprises a treatment tank and a self-priming pump, a plurality of aeration discs are mounted at the bottom of the inner wall of the treatment tank, a water pump guide rail is fixedly mounted in the treatment tank, and a sludge discharge pump is axially connected onto the water pump guide rail in a sliding manner. According to the utility model, anaerobic and aerobic states in the tank can be in an alternating state, the nitrogen and phosphorus removal purification effect is good, the operation effect is stable, sewage is precipitated in an ideal static state, the treatment time is short, the efficiency is high, the effluent quality is excellent, the process is simple, the cost can be effectively saved, and the device has the characteristics of three-period control per day, impact load resistance, high efficiency and the like. Treated water retained in the tank has diluting and buffering effects on sewage, the impact of water quantity and organic dirt can be effectively resisted, each procedure in the technological process can be adjusted according to water quality and water quantity, the operation is flexible, the treatment equipment is less, the structure is simple, and the operation, maintenance and management are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an SBR device for treating rural domestic sewage. Background Art

[0002] SBR, short for Sequencing Batch Activated Sludge Process, is an activated sludge wastewater treatment technology that operates with intermittent aeration. Unlike traditional wastewater treatment processes, SBR technology utilizes a time-segmented operation method instead of a space-segmented one, employs non-stationary biochemical reactions instead of steady-state ones, and employs static ideal sedimentation instead of traditional dynamic sedimentation. Its key characteristics are its orderly and efficient operation. The core of SBR technology is the SBR reactor, which integrates homogenization, primary sedimentation, biodegradation, and secondary sedimentation into a single tank, without a sludge return system.

[0003] Currently, SBR is an integrated equipment for sewage treatment and reuse. The drainage time is short and the sediment sludge layer is easily stirred during drainage. Therefore, special drainage equipment (such as a decanter) is required. The requirements for the decanter are very high and the post-processing equipment is large, which is not conducive to use. For this reason, we propose an SBR equipment for rural domestic sewage treatment to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide an SBR device for rural domestic sewage treatment to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an SBR equipment for rural domestic sewage treatment, comprising a treatment tank and a self-priming pump, wherein a plurality of aeration plates are installed at the bottom of the inner wall of the treatment tank, a water pump guide rail is fixedly installed in the treatment tank, a sludge pump is axially slidably connected to the water pump guide rail, a sludge pipe is connected to the sludge pump, and a drainage device is also installed inside the treatment tank.

[0006] Furthermore, the drainage device specifically adopts a float-type decanter with a float bottom outlet pipe installed on it. A water outlet flange is provided on the right side of the treatment pool. One end of the float bottom outlet pipe is connected to the pipe installed on the liquid suction end of the self-priming pump through the water outlet flange.

[0007] Furthermore, a CFD base is provided at the bottom of the treatment tank.

[0008] Furthermore, a water inlet flange and an air inlet flange are provided on the left side of the treatment tank, and an air outlet cap and a dosing flange are provided on the top of the treatment tank.

[0009] Furthermore, a liquid level gauge line hole is provided on the top of the treatment tank, and a float liquid level gauge is installed thereon.

[0010] Furthermore, a ladder is installed on the inner wall of the treatment pool, and an equipment maintenance port is provided at the top of the treatment pool at a position corresponding to the ladder.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. The utility model can make the anaerobic and aerobic states in the pool alternate, with good purification effect of denitrification and phosphorus removal, stable operation effect, sewage precipitation in an ideal static state, short processing time, high efficiency, excellent effluent water quality, simple process, and can effectively save construction cost.

[0013] 2. The utility model has three-cycle control per day and is resistant to impact loads. The treated water retained in the pool has a dilution and buffering effect on the sewage, and can effectively resist the impact of water volume and organic pollutants. Each process in the process can be adjusted according to water quality and water volume. It is flexible in operation, requires less processing equipment, has a simple structure, and is easy to operate and maintain.

[0014] 3. The utility model adopts underground pump station control, which greatly reduces the floor space and is equipped with ground equipment rooms, which is convenient for maintenance and improves the convenience of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] In the figure: 1 aeration plate, 2 mud pump, 3 water outlet flange, 4 mud pipe, 5 water inlet flange, 6 air inlet flange, 7 equipment maintenance port, 8 ladder, 9 CFD base, 10 air outlet cap, 11 dosing flange, 12 liquid level gauge line hole, 13 float bottom water outlet pipe, 14 water pump guide rail, 15 drainage device, 16 self-priming pump, 17 treatment tank. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1:

[0019] See also Figure 1An SBR device for rural domestic sewage treatment includes a treatment tank 17 and a self-priming pump 16. At least two-thirds of the bottom of the treatment tank 17 is buried underground, which can effectively reduce the floor space, and is equipped with a ground equipment room. Several aeration plates 1 are installed at the bottom of the inner wall of the treatment tank 17. A water pump guide rail 14 is fixedly installed in the treatment tank 17. A sludge pump 2 is axially slidably connected to the water pump guide rail 14. A sludge pipe 4 is connected to the sludge pump 2. One end of the sludge pipe 4 extends to the outside of the tank to discharge the deposited sludge. A drainage device 15 is also installed inside the treatment tank 17.

[0020] Specifically, the drainage device 15 adopts a float-type decanter and a float bottom outlet pipe 13 is installed on it. An outlet flange port 3 is provided on the right side of the treatment tank 17. One end of the float bottom outlet pipe 13 is connected to the pipe installed on the liquid suction end of the self-priming pump 16 through the outlet flange port 3.

[0021] Specifically, a CFD base 9 is provided at the bottom of the treatment tank 17. CFD analysis can help designers optimize the shape and structure of the base to minimize buoyancy or distribute buoyancy, thereby reducing material usage and costs. It can also simulate fluid effects in various complex environments such as groundwater and floods, ensuring that the base has good anti-floating performance under different working conditions, thereby improving the safety and stability of the structure.

[0022] Specifically, a water inlet flange 5 and an air inlet flange 6 are respectively provided on the left side of the treatment tank 17. The water inlet flange 5 and the air inlet flange 6 are respectively connected to the water inlet pipe and the air inlet pipe, which are used to discharge sewage into the interior of the treatment tank 17 and allow gas to pass in. An air outlet cap 10 and a dosing flange 11 are respectively provided on the top of the treatment tank 17. The air outlet cap 10 can control the gas discharge, and the dosing flange 11 is externally connected to the pipe above the dosing pump to control the dosing.

[0023] Specifically, a level gauge line hole 12 is provided on the top of the treatment tank 17, and a float level gauge is installed thereon. After the float level gauge is installed, multiple water pumps can be started and stopped in conjunction with the control system according to the liquid level in the treatment tank 17.

[0024] Specifically, a ladder 8 is installed on the inner wall of the treatment pool 17, and an equipment inspection port 7 is provided at the top of the treatment pool 17 corresponding to the position of the ladder 8. Maintenance workers can enter the treatment pool 17 through the ladder 8 and the equipment inspection port 7 to perform maintenance and repairs on the equipment inside, thereby improving safety.

[0025] In this embodiment, a submersible sewage pump and a float pump are also installed in the treatment tank 17, both of which are electrically connected to the SBR overall control system and linked to the SBR. The submersible sewage pump in the tank runs for 1 hour, then pauses for 7 hours, and then runs for 1 hour, repeating the cycle. After the submersible sewage pump stops running, the aeration plate 1 immediately runs for 3 hours and then stops, entering the anoxic process. It runs for 1.5 hours under anoxic conditions, and the float pump starts after 1 hour of sedimentation. It stops after starting for 1 hour. When the SBR tank reaches the lowest water level, the float pump stops. When the float pump starts, the dosing pump also starts, and when it stops, it also stops. After the float pump stops, the SBR tank is idle for 0.5 hours and enters the next operation cycle. Through the above-mentioned cycle, the supernatant can be separated after the sludge is settled, and then quantitative drainage can be carried out. The drainage device 15, that is, the float-type decanter, will neither disturb the settled sludge nor cause the sludge to float. In conjunction with the water outlet pipe 13 at the bottom of the float and the self-priming pump 16, the supernatant is discharged at a specified flow rate.

[0026] In the entire system, the start and stop of multiple pumps are controlled by the overall control system in conjunction with the float level gauge.

[0027] The utility model can make the anaerobic and aerobic states in the pool alternate, with good purification effect of denitrification and phosphorus removal, stable operation effect, sewage precipitation in an ideal static state, short treatment time, high efficiency, excellent effluent water quality, simple process, and can effectively save construction cost. It has three-cycle control per day and is resistant to impact loads. There is retained treated water in the pool, which has a dilution and buffering effect on sewage and can effectively resist the impact of water volume and organic pollutants. Each process in the process can be adjusted according to water quality and water volume. It is flexible in operation, requires less treatment equipment, has a simple structure, is easy to operate and maintain, and adopts underground pump station control, which greatly reduces the floor space. It is equipped with ground equipment room for easy maintenance, which improves the convenience of operation and maintenance.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A SBR device for rural domestic sewage treatment, comprising a treatment tank (17) and a self-priming pump (16), characterized in that: A plurality of aeration plates (1) are installed at the bottom of the inner wall of the treatment tank (17), a water pump guide rail (14) is fixedly installed in the treatment tank (17), a mud discharge pump (2) is axially slidably connected to the water pump guide rail (14), a mud discharge pipe (4) is connected to the mud discharge pump (2), and a drainage device (15) is also installed inside the treatment tank (17).

2. The SBR equipment for rural domestic sewage treatment according to claim 1, characterized in that: The drainage device (15) specifically adopts a float-type decanter and is equipped with a float bottom water outlet pipe (13). The right side of the treatment tank (17) is provided with a water outlet flange (3). One end of the float bottom water outlet pipe (13) is connected to a pipe installed on the liquid suction end of the self-priming pump (16) through the water outlet flange (3).

3. The SBR equipment for rural domestic sewage treatment according to claim 2, characterized in that: A CFD base (9) is provided at the bottom of the treatment tank (17).

4. The SBR equipment for rural domestic sewage treatment according to claim 3, characterized in that: The left side of the treatment tank (17) is provided with a water inlet flange (5) and an air inlet flange (6), and the top of the treatment tank (17) is provided with an air outlet cap (10) and a dosing flange (11).

5. The SBR equipment for rural domestic sewage treatment according to claim 4, characterized in that: The top of the treatment tank (17) is also provided with a liquid level gauge line hole (12), and a float liquid level gauge is installed on it.

6. The SBR equipment for rural domestic sewage treatment according to claim 5, characterized in that: A ladder (8) is installed on the inner wall of the treatment pool (17), and an equipment maintenance opening (7) is provided at a position corresponding to the ladder (8) on the top of the treatment pool (17).

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