CN210085217U - An air pump-driven sewage reactor based on program control - Google Patents

Abstract

The utility model discloses an air pump-driven sewage reactor based on program control. The air pump-driven sewage reactor comprises a water inlet pipe, a sewage treatment reactor, a PLC control cabinet and a water outlet pipe, wherein the PLC control cabinet has a built-in air pump and PLC control. The air pump separates the first air-lifting pipe, the second air-lifting pipe, the third air-lifting pipe and the aeration pipe from the PLC control cabinet, and the opening of each gas pipeline is implemented by the PLC-controlled solenoid valve; The cylinder and the outer cylinder are composed, the inner cylinder is the disinfection water outlet area, and the outer cylinder is divided into the water inlet area and the main reaction area by the partition; the interior of the water inlet area is provided with a high level gauge, a low level gauge and a first air lift pipe; The interior of the main reaction zone is provided with biological filler, the second air lift pipe and the aeration pipe; the interior of the disinfection water outlet area is provided with a disinfection sheet basket and a third air lift pipe; connect. The utility model solves the technical requirement of near-zero maintenance of small water volume sewage.

Description

An air pump-driven sewage reactor based on program control

technical field

The utility model belongs to the technical field of sewage treatment, and relates to a single-household and adjacent multi-household rural sewage treatment device with small water volume, in particular to an air pump-driven one-gas multi-purpose sewage treatment device.

Background technique

With the rapid development of my country's economy, the income of rural residents has increased significantly, and people have put forward higher requirements for the living environment. The problem of rural surface and groundwater pollution caused by scattered sewage has attracted much attention. deal with.

At present, the traditional anaerobic-anoxic-aerobic (commonly called AAO) process and circulating activated sludge (commonly called CASS) process are used to remove organic matter (calculated as COD) and nitrogen and phosphorus in the treatment of urban domestic sewage in my country. However, for rural retail household sewage, there are problems that the water volume is too small (mostly less than 10 tons per day), the water volume fluctuates greatly, and the residents' operation ability is weak. It is difficult for rural residents to send special personnel to maintain such small water volume sewage facilities, and it is difficult to choose It is suitable for small sewage pumps that do not require maintenance for a long time. If the above traditional AAO or CASS sewage treatment process is selected, the treatment facility will be shut down due to maintenance difficulties.

In view of the technical requirements of near-zero maintenance and resistance to water quality and impact of small water volume rural sewage, it is necessary to avoid the use of pumps that are easy to block and overload. In terms of operation, it is necessary to consider adjustable treatment technologies that can adapt to large changes in water volume and concentration.

SUMMARY OF THE INVENTION

In order to solve the technical requirement of near-zero maintenance of small water volume sewage, the utility model provides an air pump-driven sewage reactor (ADSR for short) based on program control. The device of the utility model does not need a water pump to complete the lifting of sewage, the power consumption is only one air pump, the reaction process is controlled by the PLC program to complete the removal of pollutants, and the treated sewage is discharged or reused by pneumatic lifting in the disinfection water outlet area.

The purpose of this utility model is to realize through the following technical solutions:

An air pump-driven sewage reactor based on program control, comprising a water inlet pipe, a sewage treatment reactor, a PLC control cabinet, and a water outlet pipe, wherein:

The PLC control cabinet has a built-in air pump and a PLC controller;

The air pump separates the first air lift pipe, the second air lift pipe, the third air lift pipe three gas pipes and an aeration pipe from the PLC control cabinet;

A solenoid valve is arranged between the air pump and the first air lift pipe, the second air lift pipe, the third air lift pipe and the aeration pipe. The first air lift pipe, the second air lift pipe, the third air lift pipe and the aeration pipe The opening of the trachea is implemented by a PLC-controlled solenoid valve;

The sewage treatment reactor is composed of an inner cylinder and an outer cylinder, the inner cylinder is a disinfection water outlet area, and the outer cylinder is divided into a water inlet area and a main reaction area through a partition;

The inside of the water inlet area is provided with a high level gauge, a low level gauge and a first air lifter;

The interior of the main reaction zone is provided with biological fillers, a second air stripping pipe and an aeration pipe;

The inside of the disinfection water outlet area is provided with a disinfection sheet basket and a third air lift pipe;

The first air lift pipe lifts the sewage from the water inlet area to the main reaction area;

The second air-lifting pipe lifts the reacted and precipitated sewage from the main reaction zone into the sterilizing sheet basket;

The aeration pipe is connected with the aeration head located at the bottom of the main reaction zone;

The third air lift pipe is connected with the water outlet pipe to lift the disinfected sewage from the disinfection water outlet area to the external drainage ditch or reuse;

The water inlet pipe is connected to the outlet water from the septic tank and is connected to the water inlet area of the sewage treatment reactor.

Compared with the prior art, the utility model has the following advantages:

1. The utility model considers the one-gas-four-use small-water-volume sewage treatment mode driven by the air pump, and the durable air pump does not have the problems of blockage and easy overloading, and this method solves the problem of nearly zero maintenance of rural small-water-volume sewage (below 10 tons/day). Technical requirements.

2. The ADSR water inlet area of the present utility model can ensure that all daily sewage is treated after being lifted, and the main reaction area adopts an anoxic and aerobic alternating operation mode based on PLC control, which can realize program control, and the sewage in the water inlet area is This area realizes anoxic and aerobic reactions, sedimentation and drainage, ensuring that the daily sewage can be fully upgraded and treated, and can adapt to the water quality changes of different users by adjusting the reaction procedures; the disinfection water outlet area can realize the inactivation of pathogenic microorganisms And the efflux of treated water.

3. The utility model is suitable for single households with small water volume and for the treatment of rural sewage close to many households. The PLC reaction program can be adjusted according to the changes of water volume and water quality, so as to achieve the effluent reaching the standard and ensure that the effluent COD, ammonia nitrogen and total nitrogen are lower than 60 mg/L. , 5mg/L and 20mg/L, which meet the discharge standards of rural domestic sewage in many places.

Description of drawings

Fig. 1 is a plan sectional view of a sewage treatment reactor;

Figure 2 is an elevation view of a sewage treatment reactor;

Fig. 3 is the working schematic diagram of air lifter;

Fig. 4 is a schematic diagram of the position of the aeration pipe in the water inlet zone and the main reaction zone;

Fig. 5 is a schematic diagram of the position of the air lift pipe in the main reaction zone and the water effluent disinfection zone;

Fig. 6 is the process flow diagram of the treatment process of rural sewage driven by air pump;

Fig. 7 is the installation schematic diagram of septic tank and air pump-driven rural sewage treatment reactor;

In the figure, 1-water inlet pipe, 2-sewage treatment reactor, 3-PLC control cabinet, 4-first air-lifting pipe, 5-second air-lifting pipe, 6-third air-lifting pipe, 7-aeration pipe , 8-clapboard, 9-outlet pipe, 10-aeration head, 11-observation hole, 12-foundation, 13-residential house, 14-drainage point, 15-septic tank, 16-septic tank observation pipe.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings, but are not limited thereto. Any modification or equivalent replacement of the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention shall cover within the scope of protection of the present invention.

Embodiment 1: This embodiment provides an air pump-driven sewage reactor based on program control. As shown in Figures 1-5, the air pump-driven sewage reactor includes a water inlet pipe 1, a sewage treatment reactor 2, and PLC control. Cabinet 3, outlet pipe 9, of which:

The PLC control cabinet 3 has a built-in air pump and a PLC controller, and the operation of the air pump is controlled by the PLC controller program. Pipe 6 and aeration pipe 7, solenoid valves are set between the air pump and the first air-lifting pipe 4, the second air-lifting pipe 5, the third air-lifting pipe 6 and the aeration pipe 7, the first air-lifting pipe 4, the second The opening of the air-lifting pipe 5, the third air-lifting pipe 6 and the aeration pipe 7 is implemented by the PLC-controlled solenoid valve. A schematic diagram of the working principle of the first air-lifting pipe 4 , the second air-lifting pipe 5 and the third air-lifting pipe 6 is shown in FIG. 3 . The air inlet pipe is connected to the air pump. After the air pump works, the gas flows down through the air inlet pipe, forming a certain attraction at the corner, and the mixed liquid together with the input gas is lifted to another position through the mixed liquid riser.

The sewage treatment reactor 2 is composed of an inner cylinder and an outer cylinder. As shown in Figure 1, the inner cylinder is a disinfection water outlet area 2-1, and the outer cylinder is divided into a water inlet area 2-2 and a main reaction area 2-1 through a partition 8. 3. As shown in Figure 2, the water inlet area 2-2 is connected to the water inlet pipe 1, and the water outlet pipe 9 is connected to the disinfection water outlet area 2-1.

The function of the water inlet area 2-2 is to lift the sewage generated by the villagers every day to the main reaction area 2-3, and the interior of the water inlet area 2-2 is provided with a high level gauge, a low level gauge and a first air lift. Pipe 4, the first air lift pipe 4 is activated when the sewage reaches a high liquid level, and the first air lift pipe 4 is closed when the sewage reaches a low liquid level.

The interior of the main reaction zone 2-3 is provided with a second air lift pipe 5 and an aeration pipe 7; the sewage completes anoxic stirring, aerobic aeration and precipitation processes in the main reaction zone 2-3, and the precipitated sewage passes through. The second air stripping pipe 5 is lifted from the main reaction zone 2-3 to the disinfection water outlet zone 2-1, and the aeration pipe 7 plays the role of aeration. Minutes to stop aeration achieved. In order to improve the reaction efficiency, the main reaction zone 2-3 also needs to place biological fillers to increase the biomass concentration.

The disinfection water outlet area 2-1 is provided with a disinfection sheet basket 11 and a third air lift pipe 6. After the sewage is sterilized by the disinfection sheet basket 11, the third air lift pipe 6 is lifted to discharge or reused.

In this embodiment, the schematic diagram of the position of the aeration pipes in the water inlet area 2-2 and the main reaction area 2-3 is shown in Figure 4, the water inlet area 2-2 is connected to the water inlet pipe 1, and one side of the first air stripping pipe 4 is connected to the air pump, The other side lifts the sewage from the water inlet zone 2-2 to the main reaction zone 2-3. The main reaction zone is provided with an aeration pipe 7, and the aeration pipe is connected to the aeration head 10 at the bottom of the main reaction zone 2-3.

In this embodiment, the schematic diagram of the positions of the main reaction zone 2-3 and the effluent disinfection zone 2-1 is shown in Figure 5. After the sewage in the main reaction zone 2-3 is reacted and precipitated, the sewage is lifted from the second air lift pipe 5 to The porous disinfection sheet basket 11 is placed in the disinfection sheet basket 11. Solid disinfection chlorine ammonium is placed in the disinfection sheet basket 11, and the sewage is sterilized after passing through the disinfection sheet basket 11 and the chlorine ammonium. The disinfected water is lifted to the external drainage ditch or reused through the third air lift pipe 6 .

In this embodiment, the bottom of the third air-lifting pipe 6 is located near the 1/3 position above the bottom of the sewage treatment reactor 2, and the first air-lifting pipe 4, the second air-lifting pipe 5 and the aeration pipe 7 are all at a distance from the sewage Treat the 10-20cm above the bottom of the reactor 2 pool.

In this embodiment, in order to prevent the sewage suspended matter from blocking the air lift pipe, the first air lift pipe 4 can be placed in a steel mesh bucket with a diameter of 0.2-0.5 cm. A stripping tube 4 is lifted to the main reaction zone 2-3.

In this embodiment, the air pump-driven sewage treatment reactor generally operates for one cycle per day and one batch per day when in use, and completes the standing of the sewage to be treated for the second day. The effective volume of inlet zone 2-2 is the daily discharge volume treated. If running 2 cycles per day, the effective volume of the water inlet area 2-2 is half of the treated daily drainage volume.

In this embodiment, the volume between the low level gauge and the high level gauge is the designed daily treated water volume (half of the designed water volume if it runs for 2 cycles per day), and the first air stripping pipe 4 is activated when the water level reaches the high level. When the water level reaches a low level, the first air lift pipe 4 stops working, and the aeration pipe 7 is started. The aeration tube 7 is operated by aeration for 10~20 seconds first, and the aeration is stopped for 10~15 minutes. This intermittent operation is 1.5~2 hours in total, followed by aeration for 6~16 hours (the aeration time is adjusted according to the water quality), and then intermittently. Aeration for 1.5 to 2 hours (same as above for 10 to 20 seconds, stop for 10 to 15 minutes), and after the mixture settles for 2 to 2.5 hours, start the second air lift pipe 5 to lift the sewage to the disinfection discharge area 2- 1. The lifting water first passes through the sterilization basket 11 , and then the third air lift pipe 6 discharges the sewage out. The time from the start of the first air lift pipe 4 to the discharge of the treated water is one cycle. At this time, the water inlet area 2-2 gradually goes to the high level gauge and waits for the next cycle to treat the sewage. The utility model can adjust the aerobic reaction time according to the water quality of the incoming water, so as to realize the adaptation to different water quality.

In this embodiment, the fixed packing is arranged at a design water level of 20-30 cm, the fixed packing is arranged to account for 3/4 of the volume of the main reaction zone 2-3, the other non-packing areas are provided with a second stripping pipe 5, and the aeration pipe 7 is set in the packing below.

In this embodiment, the main reaction zone 2-3 produces less sludge and is controlled in a low-load operation state, and part of the main reaction zone 2-3 sludge can be discharged to the front-end septic tank by a temporary sludge pump every quarter.

In this embodiment, the material of the sewage treatment reactor 2 may be steel, PVC, and precast concrete.

In this embodiment, the sewage treatment reactor 2 can also be designed to be built together with the septic tank. If it is built together, two or three septic tank areas will be added before the water inlet area 2-2.

In this embodiment, the planar shape of the sewage treatment reactor 2 may be a circle, an ellipse, a square, or the like.

In this embodiment, the outlet of the air pump is divided into 4 air pipes, which are respectively 3 air lift pipes and 1 aeration pipe, which are respectively controlled by solenoid valves, and the opening of the solenoid valves is controlled by a PLC program.

Embodiment 2: This embodiment provides a process of using the air pump-driven sewage treatment reactor described in Embodiment 1 to perform air pump-driven rural sewage treatment. As shown in FIG. 6, the domestic sewage containing feces first enters the septic tank first. At the end of the septic tank, the solids are precipitated in the first section, and the sewage enters the air pump-driven sewage treatment reactor at the end of the septic tank.

The schematic diagram of the installation of the septic tank and the air pump-driven rural sewage treatment reactor is shown in Figure 7. The villagers' drainage and feces enter the septic tank, and the septic tank effluent is connected to the air pump to drive the sewage treatment reactor. The effluent of the sewage treatment reactor is disinfected and air-lifted. Discharge or reuse after effluent. The sewage treatment reactor is connected with 3 air-lifting pipes and 1 with the aeration pipe. These 4 air-lifting pipes are connected with the air pump placed in the PLC control cabinet. In engineering application, the septic tank and the sewage treatment reactor are Underground and ground, there is only a PLC control cabinet with built-in air pump and PLC controller with rainproof function.

Embodiment 3: In this embodiment, the diameter of the sewage treatment reactor is 1.5m, the height is 2.6m, and the volume ratio of the water inlet area, the main reaction area and the disinfection water outlet area is 2:3:1, the operation effect is: the influent COD312 ~342mg/L, effluent COD: 43.2~49.2mg/L; influent ammonia nitrogen 55~61 effluent mg/L, effluent ammonia nitrogen 0.9~1.3mg/L, influent total nitrogen 38~46mg/L, effluent total nitrogen 14.3~ 18.7mg/L, total phosphorus in influent 4.06~5.29 mg/L, total phosphorus in effluent 1.39~2.48 mg/L, sludge concentration in main reaction zone: 3573~4300mg/L.

Claims (7)

1. The utility model provides an air pump drive sewage reactor based on program control, its characterized in that air pump drive sewage reactor includes inlet tube, sewage treatment reactor, PLC switch board, outlet pipe, wherein:

the PLC control cabinet is internally provided with an air pump and a PLC controller;

the air pump is used for separating three air pipes, namely a first air stripping pipe, a second air stripping pipe and a third air stripping pipe and an aeration pipe from the PLC control cabinet;

electromagnetic valves are arranged among the air pump, the first air stripping pipe, the second air stripping pipe, the third air stripping pipe and the aeration pipe, and the opening of the first air stripping pipe, the second air stripping pipe, the third air stripping pipe and the aeration pipe is implemented by the PLC control electromagnetic valves;

the sewage treatment reactor consists of an inner cylinder and an outer cylinder, wherein the inner cylinder is a disinfection water outlet area, and the outer cylinder is divided into a water inlet area and a main reaction area by a partition plate;

a high liquid level meter, a low liquid level meter and a first gas stripping pipe are arranged in the water inlet area;

the main reaction zone is internally provided with biological filler, a second air stripping pipe and an aeration pipe;

a disinfection sheet basket and a third air stripping pipe are arranged in the disinfection water outlet area;

the first air lifting pipe lifts the sewage from the water inlet area to the main reaction area;

the second air stripping pipe lifts the sewage after reaction and precipitation from the main reaction area to the disinfection sheet basket;

the aeration pipe is connected with an aeration head positioned at the bottom of the main reaction zone;

the third air stripping pipe is connected with the water outlet pipe to lift the disinfected sewage from the disinfection water outlet area to an external drainage ditch or recycle the disinfected sewage;

the water inlet pipe is connected with the effluent from the septic tank and is connected with the water inlet area of the sewage treatment reactor.

2. The air pump driven sewage reactor based on program control as claimed in claim 1, wherein said sterilizing sheet basket is a porous structure with solid sterilizing chlorine ingots built therein.

3. The air pump driven sewage reactor based on program control according to claim 1, wherein the bottom of the third stripping pipe is located at 1/3 above the bottom of the sewage treatment reactor, and the first stripping pipe, the second stripping pipe and the aeration pipe are all located 10-20 cm above the bottom of the sewage treatment reactor.

4. The air pump driven sewage reactor based on program control according to claim 1 or 3, wherein the first air stripping pipe is placed in a steel wire mesh barrel with a hole diameter of 0.2-0.5 cm.

5. The air pump driven sewage reactor based on program control according to claim 1, wherein the fixed packing is arranged at 3/4 occupying 2-3 volume of the main reaction zone under the designed water level of 20-30 cm, the rest non-packing zones are provided with second air stripping pipes, and the aeration pipes are arranged below the packing.

6. The air pump driven sewage reactor based on program control as claimed in claim 1, wherein the material of the sewage treatment reactor is steel, PVC or precast concrete, and the planar shape is circular, elliptical or square.

7. The air pump driven sewage reactor based on program control as claimed in claim 1, wherein the sewage treatment reactor is built with a septic tank, and 2 or 3 septic tank zones are added before the water inlet zone.

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