Control system based on buried sewage treatment device

Abstract

The utility model provides a control system based on a buried sewage treatment device, which is characterized in that a sewage treatment tank body internally comprises a filter tank, an anoxic tank, an aerobic tank and a sedimentation tank, an air pump is arranged outside the sewage treatment tank body, and an anoxic aeration pipe and an aerobic aeration pipe are arranged at the bottoms of the anoxic tank and the aerobic tank; the anoxic aeration pipe and the aerobic aeration pipe are both connected with an air pump; the control system comprises a PLC, a flow meter connected to the water inlet pipeline, a first electromagnetic control valve connected to the anoxic aeration pipe and a second electromagnetic control valve connected to the aerobic aeration pipe, the air pump, the flow meter, the first electromagnetic control valve and the second electromagnetic control valve are all connected with the PLC, and the water inlet flow of the flow meter is obtained through the PLC; and the air pump, the first electromagnetic control valve and the second electromagnetic control valve are controlled. The control system can realize automatic and efficient operation of sewage treatment, does not need management by a specially-assigned person, and is low in operation cost, and the effluent quality meets the requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment equipment technical field especially relates to a control system based on buried sewage treatment device. BACKGROUND

[0002] In order to improve rural environmental quality, ensure groundwater safety, promote rural domestic sewage treatment is imperative. But the rural area village is widely distributed, population is dispersed, and the construction sewage collection pipe network cost is higher, currently more selects sewage treatment equipment and collects, handles rural sewage. Sewage treatment equipment is a kind of industrial equipment that can effectively treat domestic sewage, industrial wastewater and other sewage, mainly has surface type and buried type two types, wherein buried sewage treatment equipment is set below the ground, the ground above the equipment can be used as greening or other land, and currently buried sewage treatment device is widely applied in rural domestic sewage treatment.

[0003] Although some areas invest a lot of manpower, material resources and financial resources to build sewage treatment equipment, but because of low design, construction, operation and maintenance management capability, high operation cost etc. lead to many sewage treatment equipment after construction " sunbath ", effluent quality does not reach the standard, pollutes local ecological environment, and even the soil, river, groundwater etc. in some areas are polluted, affect the spiritual outlook of the area, hinder the improvement of rural environment. Therefore it is necessary to provide a control system of sewage treatment device, to realize the automatic operation of sewage treatment and reduce special management. SUMMARY

[0004] The utility model provides a control system based on buried sewage treatment device, the control system of sewage treatment device can realize the automatic operation and high efficiency of sewage treatment, need not special management, and operation cost is low, and effluent quality meets the requirement.

[0005] The technical scheme adopted by the utility model to realize the above-mentioned purposes of the utility model is as follows:

[0006] A control system based on buried sewage treatment device, the buried sewage treatment device at least includes sewage treatment jar body, the sewage treatment jar body includes the filter pond, the anoxic pond, the aerobic pond and the sedimentation tank that are sequentially arranged and sequentially communicated in phase separation according to water flow direction, the sewage treatment jar body is located at filter pond and sedimentation tank respectively and is connected with water inlet line and water outlet line, the outside of sewage treatment jar body is provided with air pump, and the bottom of anoxic pond and aerobic pond is arranged with anoxic aeration pipe and aerobic aeration pipe, and anoxic aeration pipe and aerobic aeration pipe are connected with air pump;

[0007] The control system comprises a PLC controller, a flow meter connected to the water inlet pipeline, a first electromagnetic control valve connected to the anoxic aeration pipe, and a second electromagnetic control valve connected to the aerobic aeration pipe, the air pump, the flow meter, the first electromagnetic control valve and the second electromagnetic control valve are connected to the PLC controller, the water inlet flow of the flow meter is obtained through the PLC controller, and the air pump, the first electromagnetic control valve and the second electromagnetic control valve are controlled, so that the air pump is controlled to aerate the anoxic tank and the aerobic tank.

[0008] The filter tank is provided with a filter basket, the outlet of the water inlet pipeline is located above the filter basket, and the anoxic aeration pipe arranged at the bottom of the anoxic tank extends to the bottom of the filter tank and aerates the bottom of the filter tank.

[0009] The bottom of the aerobic tank is provided with a biofilm assembly, and the end of the aerobic aeration pipe away from the air pump is connected to the biofilm assembly to perform nitrification treatment on the sewage.

[0010] The biofilm assembly is connected with a nitrified liquid reflux pipe, the other end of the nitrified liquid reflux pipe extends to the filter tank, a nitrified liquid gas lifting pipe is connected between the aerobic aeration pipe and the nitrified liquid reflux pipe, a third electromagnetic control valve is arranged on the nitrified liquid gas lifting pipe, the third electromagnetic control valve is connected to the PLC controller, and the nitrified liquid is refluxed into the filter tank through the PLC controller.

[0011] The bottom of the aerobic tank is provided with a sludge reflux pipe, the other end of the sludge reflux pipe extends to the filter tank, a sludge gas lifting pipe is connected between the aerobic aeration pipe and the sludge reflux pipe, a fourth electromagnetic control valve is arranged on the sludge gas lifting pipe, the fourth electromagnetic control valve is connected to the PLC controller, and the sludge at the bottom of the aerobic tank is refluxed into the filter tank through the PLC controller.

[0012] The sedimentation tank is provided with an inclined pipe filler, and the water outlet is located on the side wall of the sewage treatment tank body away from the aerobic tank and close to the top, so that the effluent of the sedimentation tank overflows.

[0013] The top of the sewage treatment tank body is connected with observation and maintenance wells upward at the filter tank, the anoxic tank, the aerobic tank and the sedimentation tank, and the top of each observation and maintenance well is provided with a well cover.

[0014] The PLC controller is placed in an electric control box, and a data acquisition and transmission instrument is further arranged in the electric control box, the PLC controller is connected to an upper computer through the data acquisition and transmission instrument, and remote monitoring is realized.

[0015] The buried sewage treatment device further comprises a solar power supply device installed on the ground, the solar power supply device comprises a solar photovoltaic panel and a storage battery, the solar photovoltaic panel is connected to the storage battery, the storage battery is connected to the PLC controller and the air pump, and the PLC controller controls the storage battery to supply power to the air pump.

[0016] The filter tank is further provided with a liquid level meter for monitoring water depth of the filter tank, and the liquid level meter is connected with the PLC controller.

[0017] Compared with the prior art, the technical scheme provided by the utility model has the following advantages: (1) the buried sewage treatment device based on the utility model is provided with a filter tank, an anoxic tank, an aerobic tank and a sedimentation tank, domestic sewage enters the sewage treatment tank body, is filtered through a filter basket, is subjected to two-stage anoxic treatment below the filter tank and in the anoxic tank, is subjected to treatment through a biological membrane assembly in the aerobic zone, and is discharged after being subjected to treatment through the sedimentation tank, so that the sewage treatment effect is good and the water quality is guaranteed.

[0018] (2) the buried sewage treatment device based on the utility model is provided with a PLC control system, can be subjected to normal operation and intermittent operation according to the intermittence and volatility of the rural water consumption, is subjected to automatic treatment of sewage during normal operation, is not subjected to treatment of sewage during intermittent operation, and only maintains the activity of the bacteria in the anoxic tank and the aerobic tank through intermittent aeration. The sewage treatment is realized through the PLC control system, and automation and high efficiency are realized, so that a person is not needed to be in charge, only needs to be subjected to maintenance and maintenance at a fixed time, and the operation is safe and reliable.

[0019] (3) the control system is connected with the upper computer through the data acquisition transmission instrument, and remote monitoring of the sewage treatment is realized. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the buried sewage treatment device based on the utility model;

[0021] Figure 2 It is a top view of the buried sewage treatment device based on the utility model;

[0022] Figure 3 It is a side view of the buried sewage treatment device based on the utility model;

[0023] Figure 4 It is Figure 1 a sectional view at E-E in the utility model;

[0024] Figure 5 It is Figure 2 a sectional view at G-G in the utility model;

[0025] Figure 6 It is Figure 2 a sectional view at F-F in the utility model;

[0026] Figure 7 It is Figure 1 a sectional view at B-B in the utility model;

[0027] Figure 8 It is Figure 1 a sectional view at C-C in the utility model;

[0028] Figure 9 For Figure 1 Cross-sectional view at D-D;

[0029] Figure 10 For the buried sewage treatment device based on the view of connecting with solar power supply equipment;

[0030] Figure 11 For the buried sewage treatment device based on the side view of connecting with solar power supply equipment;

[0031] Figure 12 For the buried sewage treatment device based on the schematic view when buried in the ground;

[0032] In the figure: 1-sewage treatment tank, 2-saddle support, 3-filtering pool, 4-anoxic pool, 5-oxygen pool, 6-sedimentation tank, 7-observation and maintenance well, 8-well cover, 9-water inlet pipeline, 10-filtering basket, 11-water outlet pipeline, 12-anoxic aeration pipe, 13-oxygen aeration pipe, 14-biological membrane assembly, 15-nitrification liquid return pipe, 16-nitrification liquid gas lifting pipe, 17-sludge return pipe, 18-water outlet pipe, 19-inclined pipe filler, 20-solar photovoltaic panel, 21-PLC controller, 22-battery box, 23-mounting rack, 24-mounting platform, 25-sludge gas lifting pipe, 26-third electromagnetic control valve, 27-fourth electromagnetic control valve. DETAILED DESCRIPTION

[0033] The utility model will be made detailed and specific description in combination with the drawings and specific embodiments.

[0034] The control system provided by the utility model is based on the buried sewage treatment device, and the structure of the buried sewage treatment device is as shown in Figures 1-3 The bottom of the sewage treatment tank body is provided with a plurality of saddle supports 2, which support the sewage treatment tank body, ensuring the stability of the sewage treatment tank body. Specifically, the saddle supports are provided with two.

[0035] In the embodiment, the sewage treatment tank body includes a filtering pool 3, an anoxic pool 4, an oxygen pool 5 and a sedimentation tank 6 which are sequentially arranged and communicated according to the water flow direction. Specifically, the bottom of the filtering pool, the anoxic pool, the oxygen pool and the sedimentation tank is sequentially communicated. The sewage treatment tank body is provided with a water inlet pipeline 9 and a water outlet pipeline 11 at the filtering pool and the sedimentation tank respectively, the sewage enters the filtering pool through the water inlet pipeline, flows through the anoxic pool, the oxygen pool and the sedimentation tank, and then flows out from the water outlet pipeline.

[0036] The top of the sewage treatment tank in the embodiment is connected upward with observation and maintenance wells 7 at the filter tank, the anoxic tank, the aerobic tank and the sedimentation tank, and the top of each observation and maintenance well is provided with a well cover 8 to prevent external rainwater and sundries from entering the sewage treatment tank, and after the well cover is removed, the observation and maintenance wells facilitate observation and maintenance of each area in the sewage treatment tank.

[0037] In the embodiment, a filter basket 10 is arranged in the filter tank, and the outlet of the water inlet pipeline is located above the filter basket, so that large-particle impurities in the sewage are removed. Specifically, the outlet of the water inlet pipeline is located at the observation and maintenance well above the filter tank, and the filter basket is also installed at the observation and maintenance well above the filter tank, so that the filter basket is conveniently cleaned and replaced regularly.

[0038] In the embodiment, an air pump is arranged outside the sewage treatment tank, and an anoxic aeration pipe 12 and an aerobic aeration pipe 13 are arranged at the bottom of the anoxic tank and the aerobic tank, and the anoxic aeration pipe and the aerobic aeration pipe are connected with the air pump. When the air pump works, air enters the anoxic zone and the aerobic zone through the anoxic aeration pipe and the aerobic aeration pipe to provide oxygen for the anoxic zone and the aerobic zone, thereby improving the sewage treatment efficiency and effect. Specifically, the anoxic aeration pipe arranged at the bottom of the anoxic tank extends to the bottom of the filter tank to aerate the bottom of the filter tank, that is, the filter tank has the functions of the filter zone and the anoxic zone, and the internal space of the sewage treatment tank is used efficiently.

[0039] In the embodiment, a biofilm assembly 14 is arranged at the bottom of the aerobic tank, and the end of the aerobic aeration pipe away from the air pump is connected with the biofilm assembly to perform nitrification treatment on the sewage. Specifically, the biofilm assembly is connected with a nitrified liquid return pipe 15, the other end of the nitrified liquid return pipe extends to the filter tank, and a nitrified liquid gas lifting pipe 16 is connected between the aerobic aeration pipe and the nitrified liquid return pipe to return the nitrified liquid to the filter tank. Further, a sludge return pipe 17 is arranged at the bottom of the aerobic tank, the other end of the sludge return pipe extends to the filter tank, and a sludge gas lifting pipe 25 is connected between the aerobic aeration pipe and the sludge return pipe to return the sludge at the bottom of the aerobic tank to the filter tank. In order to ensure that the nitrified liquid and the sludge returned are further decomposed well in the filter tank and the anoxic tank, the outlets of the nitrified liquid return pipe and the sludge return pipe are located above the filter zone and away from the bottom communication part between the filter zone and the anoxic zone in the embodiment. In order to facilitate control of the gas flow in the nitrified liquid gas lifting pipe and the sludge gas lifting pipe, the valves on the nitrified liquid gas lifting pipe and the sludge gas lifting pipe are located at the observation and maintenance well above the aerobic zone.

[0040] In the embodiment, the outlet of the biofilm assembly is connected with the bottom of the sedimentation tank through a water outlet pipe 18, so that the treated sewage enters the sedimentation tank, and an inclined pipe filler 19 is arranged in the sedimentation tank to further remove impurities in the sewage. Specifically, the water outlet pipeline is located on the side wall of the sewage treatment tank away from the aerobic tank and close to the top, so that the water overflowed from the sedimentation tank.

[0041] The working principle of the underground sewage treatment device in this embodiment is as follows: after domestic sewage enters the sewage treatment tank, it is filtered by the filter basket, and then undergoes two-stage anoxic treatment below the filter tank and in the anoxic tank. It is then treated by the biofilm component in the aerobic zone, and finally discharged after being treated by the sedimentation tank. The sewage treatment effect is good and the effluent quality is good.

[0042] In this embodiment, the underground sewage treatment device also includes a solar power supply device installed on the ground. The solar power supply device includes a solar photovoltaic panel 20 and a battery. The solar photovoltaic panel is connected to the battery, and the battery is connected to the air pump to supply power to the air pump. Further, both the battery and the air pump are housed in a battery box 22 to protect them. Preferably, the solar photovoltaic panel is installed at an angle on a mounting frame 23, and an installation platform is provided below the mounting frame. The electrical control box and the battery box are placed on the installation platform 24.

[0043] The underground sewage treatment device provided in this embodiment is buried underground, such as... Figure 12 As shown, by simply connecting the inlet pipe to the drainage pipe of rural domestic water supply, domestic sewage can flow into the treatment device on its own.

[0044] The control system provided by this utility model is designed based on the aforementioned underground sewage treatment device. In this embodiment, the control system includes a PLC controller 21, a flow meter (not shown in the figure) connected to the inlet pipe, a first electromagnetic control valve (not shown in the figure) connected to the anoxic aeration pipe, a second electromagnetic control valve (not shown in the figure) connected to the aerobic aeration pipe, a third electromagnetic control valve 26 connected to the nitrification liquid air-lift pipe, and a fourth electromagnetic control valve 27 connected to the sludge air-lift pipe. The air pump, flow meter, first electromagnetic control valve, second electromagnetic control valve, third electromagnetic control valve, and fourth electromagnetic control valve are all connected to the PLC controller. In this embodiment, a level gauge (not shown in the figure) for monitoring the water depth in the filter tank is also installed at the filter tank, and the level gauge is also connected to the PLC controller.

[0045] Due to the intermittence and volatility of the water usage of the farmers, the PLC controller obtains the water inflow of the flow meter and the water depth of the filter tank monitored by the liquid level meter, when the water inflow is not zero and the water depth of the liquid level meter is greater than or equal to the set threshold, the PLC controller controls the entire sewage treatment device to continuously and normally operate; otherwise, the PLC controller controls the entire sewage treatment device to intermittently operate. The specific process of the continuous and normal operation is that the PLC controller controls the air pump to work, and the PLC controller controls the first electromagnetic control valve to make the bottom of the anoxic tank intermittently aerate and stir the sludge at the bottom of the tank, the PLC controller controls the second electromagnetic control valve to make the bottom of the aerobic tank continuously aerate, the PLC controller controls the third electromagnetic control valve to make the nitration liquid reflux pipe return through the nitration liquid air lifting pipe, and the sewage at the end of the aerobic tank is lifted to the upper part of the anoxic tank, and the PLC controller controls the fourth electromagnetic control valve, the sludge reflux pipe returns through the sludge air lifting pipe, and the sludge at the bottom of the aerobic tank is lifted to the upper part of the anoxic tank. The process of the intermittent operation is that the PLC controller controls the air pump, the first electromagnetic control valve and the second electromagnetic control valve to intermittently aerate the anoxic tank and the aerobic tank to maintain the activity of the strains, and the intermittent time can be set and adjusted in the PLC controller.

[0046] In the embodiment, the battery of the solar power supply device is connected with the PLC controller and the air pump, the PLC controller controls the battery to supply power for the air pump, so as to control the air pump to work.

[0047] In the embodiment, the PLC controller is placed in the electric control box, and the data acquisition and transmission instrument is further arranged in the electric control box, the PLC controller is connected with the upper computer through the data acquisition and transmission instrument, specifically, the upper computer includes a web client and an APP client, the remote monitoring of the sewage treatment is realized, the running state of the equipment at each treatment point and the change of the water quality can be checked at any time, the corresponding operation management is facilitated, and the intelligent order is sent for the equipment with faults, the water quality not meeting the standards and other conditions, so that the faults are timely treated.

Claims

1. A control system based on a buried sewage treatment device, the buried sewage treatment device comprising at least a sewage treatment tank, characterized in that: The sewage treatment tank comprises a filter tank, an anoxic tank, an aerobic tank and a sedimentation tank which are arranged in sequence and communicated in sequence, and a gas pump is arranged outside the sewage treatment tank, and anoxic aeration pipes and aerobic aeration pipes are arranged at the bottom of the anoxic tank and the aerobic tank and connected with the gas pump. The control system comprises a PLC controller, a flow meter connected with the water inlet pipeline, a first electromagnetic control valve connected with the anoxic aeration pipe and a second electromagnetic control valve connected with the aerobic aeration pipe, the gas pump, the flow meter, the first electromagnetic control valve and the second electromagnetic control valve are connected with the PLC controller, the water inlet flow of the flow meter is obtained by the PLC controller, and the gas pump, the first electromagnetic control valve and the second electromagnetic control valve are controlled, so that the gas pump is controlled to aerate in the anoxic tank and the aerobic tank.

2. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The filter tank is provided with a filter basket, and the outlet of the water inlet pipeline is located above the filter basket, the anoxic aeration pipe arranged at the bottom of the anoxic tank extends to the bottom of the filter tank and aerates at the bottom of the filter tank.

3. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The bottom of the aerobic tank is provided with a biofilm assembly, and the end of the aerobic aeration pipe away from the gas pump is connected with the biofilm assembly to perform nitrification treatment on the sewage.

4. The control system based on the buried sewage treatment device according to claim 3, characterized in that: The biofilm assembly is connected with a nitrated liquid return pipe, the other end of the nitrated liquid return pipe extends to the filter tank, a nitrated liquid gas lifting pipe is connected between the aerobic aeration pipe and the nitrated liquid return pipe, a third electromagnetic control valve is arranged on the nitrated liquid gas lifting pipe, the third electromagnetic control valve is connected with the PLC controller, and the nitrated liquid is returned to the filter tank by the PLC controller.

5. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The bottom of the aerobic tank is provided with a sludge return pipe, the other end of the sludge return pipe extends to the filter tank, a sludge gas lifting pipe is connected between the aerobic aeration pipe and the sludge return pipe, a fourth electromagnetic control valve is arranged on the sludge gas lifting pipe, the fourth electromagnetic control valve is connected with the PLC controller, and the sludge at the bottom of the aerobic tank is returned to the filter tank by the PLC controller.

6. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The sedimentation tank is provided with an inclined pipe filler, and the water outlet pipeline is located on the side wall of the sewage treatment tank away from the aerobic tank and close to the top, so that the overflow of the sedimentation tank is discharged.

7. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The top of the sewage treatment tank is connected with observation and maintenance wells upward at the filter tank, the anoxic tank, the aerobic tank and the sedimentation tank, and the top of the observation and maintenance wells is provided with a well cover.

8. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The PLC controller is placed in an electric control box, and a data acquisition and transmission instrument is further arranged in the electric control box, the PLC controller is connected with an upper computer through the data acquisition and transmission instrument to realize remote monitoring.

9. The control system based on the buried sewage treatment device according to claim 1, characterized in that: The buried sewage treatment device further comprises a solar power supply device installed on the ground, the solar power supply device comprises a solar photovoltaic panel and a storage battery, the solar photovoltaic panel is connected with the storage battery, the storage battery is connected with the PLC controller and the gas pump, and the PLC controller controls the storage battery to supply power to the gas pump.

10. The control system based on the buried sewage treatment device according to claim 1, characterized in that: A liquid level meter for monitoring the water depth of the filter tank is further arranged at the filter tank, and the liquid level meter is connected with the PLC controller.

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