Low-pressure sewage treatment reaction device

Abstract

The application discloses a low-pressure sewage treatment reaction device, which comprises a low-pressure reaction tank, an air compressor, a vacuum machine and a lifting pump, the air compressor is connected to the lower part of the low-pressure reaction tank through an air pipe, the lifting pump is connected to the low-pressure reaction tank through a water inlet pipe, the vacuum machine is connected to the upper part of the low-pressure reaction tank through a pipeline, an exhaust pipe is arranged at the top of the low-pressure reaction tank, a water outlet pipe is arranged at the upper part of the low-pressure reaction tank, sewage is intermittently fed into the upper part of the low-pressure reaction tank and discharged from the middle part, and after reaction treatment such as biodegradation and stripping under a low-pressure state, the total nitrogen is stably reduced to 10 mg / L; the application is suitable for sewage treatment with large water quality change, has the advantages of short treatment period, good water discharge effect, stable operation, small land occupation and the like.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically to a low-pressure wastewater treatment reaction device. Background Technology

[0002] In recent years, with the rapid development of the national economy and the continuous strengthening of environmental governance, the country's requirements for environmental protection have become increasingly stringent. Currently, wastewater influent pollutant concentrations are high, water quality fluctuates greatly, and conventional wastewater treatment processes are unstable in degrading total nitrogen, easily leading to environmental problems such as eutrophication. Therefore, wastewater treatment is a necessary measure to solve water eutrophication, protect water resources, improve the living environment, and is also an important guarantee for sustainable economic development. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a low-pressure wastewater treatment reaction device to solve the problems described above.

[0004] This invention provides a low-pressure wastewater treatment reaction device, including a low-pressure reaction tank, an air compressor, a vacuum machine, and a booster pump. The air compressor is connected to the lower part of the low-pressure reaction tank via an air pipe, and the booster pump is connected to the upper part of the low-pressure reaction tank via a water inlet pipe. The vacuum machine is connected to the upper part of the low-pressure reaction tank via a pipeline. An exhaust pipe is provided at the top of the low-pressure reaction tank, and a drain pipe is provided at the upper part of the low-pressure reaction tank.

[0005] Preferably, the low-pressure reactor is equipped with multiple layers of biological packing material. A check valve is installed on the inlet pipe; a pressure relief valve is installed on the top of the low-pressure reactor.

[0006] Preferably, the low-pressure reaction tank is equipped with a drain pipe at the bottom, and ball valves are installed on the drain pipe, water pipe, exhaust pipe, and other pipelines. It also includes a dissolved oxygen meter, which is located in the middle of the low-pressure reaction tank. Furthermore, it includes an intelligent control cabinet, with the booster pump, air compressor, vacuum machine, and dissolved oxygen meter electrically connected to the intelligent control cabinet.

[0007] Preferably, the low-pressure reaction vessel is provided with multiple ring-shaped pipes, and adjacent ring-shaped pipes are connected by connecting pipes. One ring-shaped pipe is connected to an air compressor through a gas pipe. The biological packing material is arranged vertically between the ring-shaped pipes.

[0008] Preferably, the low-pressure reaction tank is further equipped with a foam removal mechanism, which includes a rotating pipe, a guide pipe, a suction pipe, and a transmission assembly. The rotating pipe is rotatably disposed inside the low-pressure reaction tank and is coaxially rotatably connected to an external foam removal pipe. The guide pipe is connected to the end of the rotating pipe, and there are multiple suction pipes disposed on the guide pipe. The transmission assembly is disposed inside the low-pressure reaction tank, and a pressure relief valve extends into the low-pressure reaction tank through a pressure relief pipe. A pneumatic impeller is disposed on the pressure relief pipe, and the pneumatic impeller is connected to the transmission assembly through a driving gear. The transmission assembly includes a driven gear, a transmission gear, and a ring gear. The ring gear is fixedly connected to the rotating pipe. The driven gear meshes with the driving gear, the transmission gear meshes with the driven gear, and the ring gear meshes with the transmission gear.

[0009] Compared with existing technologies, it has the following beneficial effects:

[0010] This invention provides a low-pressure wastewater treatment reaction device, including a low-pressure reaction tank, an air compressor, a vacuum pump, a pressure relief valve, a safety valve, a control valve, an online dissolved oxygen meter, a pressure gauge, and biological packing material. Wastewater intermittently enters from the top of the low-pressure reaction tank and exits from the middle. After undergoing biodegradation, stripping, and other reaction treatments under low pressure, the total nitrogen content stabilizes at 10 mg / L. This invention is suitable for wastewater treatment with large variations in water quality, featuring a short treatment cycle, good effluent quality, stable operation, and small footprint. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a low-pressure wastewater treatment reaction device according to the present invention;

[0013] Figure 2 This is a schematic diagram of the aeration ring pipe inside the low-pressure reaction tank of the present invention;

[0014] Figure 3 This is a schematic diagram of the foam removal mechanism of the present invention;

[0015] Figure 4 This is an axial view of the foam removal mechanism of the present invention.

[0016] Figure 5 This is a schematic diagram of the pneumatic impeller and drive gear of the present invention.

[0017] In the diagram: 1-Low-pressure reaction vessel; 2-Air compressor; 3-Vacuum machine; 4-Boost pump; 5-Water inlet pipe; 6-Exhaust pipe; 7-Drain pipe; 8-Biological packing material; 9-Dissolved oxygen meter; 10-Intelligent control cabinet; 11-Annular pipe; 12-Check valve; 13-Pressure relief valve; 14-Pressure gauge; 15-Gas pipe; 21-Rotating pipe; 22-Guide pipe; 23-Suction pipe; 24-Transmission assembly; 25-Pneumatic impeller; 26-Driving gear; 27-Annular pipe; 28-Foam removal pipe; 241-Driven gear; 242-Transmission gear; 243-Annular gear. Detailed Implementation

[0018] To better understand the structure, functional features, and advantages of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings:

[0019] Example:

[0020] like Figures 1 to 4 As shown, this application proposes a low-pressure wastewater treatment reactor, including a low-pressure reactor 1, an air compressor 2, a vacuum pump 3, and a booster pump 4. The air compressor 2 is connected to the lower part of the low-pressure reactor 1 via an air pipe 15, and the booster pump 4 is connected to the low-pressure reactor 1 via an inlet pipe 5. The vacuum pump 3 is connected to the upper part of the low-pressure reactor 1 via a pipeline. An exhaust pipe 6 is provided at the top of the low-pressure reactor 1 to discharge the reaction gas inside the reactor 1. A drain pipe 7 is provided at the upper part of the low-pressure reactor 1 to discharge the treated wastewater from the reactor. Wastewater intermittently enters from the upper part of the low-pressure reactor 1 and exits from the middle part. After undergoing biodegradation, stripping, and other reaction treatments under low pressure, the total nitrogen content stabilizes at 10 mg / L.

[0021] As another embodiment of this application, such as Figure 1 As shown, the low-pressure reactor 1 of this application is equipped with multiple layers of biological packing material 8, which is used to supply wastewater to the low-pressure reactor 1. A check valve 12 is provided on the inlet pipe 5 to prevent backflow of wastewater from the inlet pipe 5; a pressure relief valve 13 is provided at the top of the low-pressure reactor 1 to relieve pressure inside the low-pressure reactor 1; furthermore, a pressure gauge 14 is provided on the upper part of the low-pressure reactor 1 to monitor the pressure inside the tank.

[0022] As another embodiment of this application, such as Figure 1As shown, the low-pressure reaction tank 1 of this application is equipped with a drain pipe at the bottom, and ball valves are installed on the inlet pipe 5, drain pipe 7, exhaust pipe 6, and other pipes. The ball valves on the inlet pipe 5, drain pipe 7, and exhaust pipe 6 are electric ball valves. It also includes a dissolved oxygen meter 9, which is located in the middle of the low-pressure reaction tank 1 to detect the dissolved oxygen level within the tank. Furthermore, it includes an intelligent control cabinet 10, with the booster pump 4, air compressor 2, vacuum machine 3, and dissolved oxygen meter 9 electrically connected to the cabinet. The electric ball valves on the inlet pipe 5, drain pipe 7, and exhaust pipe 6 are also electrically connected to the cabinet. The intelligent control cabinet 10 further includes a control system that is electrically connected to the booster pump 4, air compressor 2, vacuum machine 3, and dissolved oxygen meter 9 to intelligently monitor and treat the wastewater within the low-pressure reaction tank 1.

[0023] Specifically, a liquid level sensor is installed inside the low-pressure reaction tank 1 to monitor the liquid level inside the low-pressure reaction tank 1. Combined with the control system, water is intermittently introduced into the inlet pipe 5 to increase the residence time of sewage in the low-pressure reaction tank 1, so that the sewage can fully react with the biological packing material 8.

[0024] As another embodiment of this application, such as Figure 2 As shown, the low-pressure reaction tank 1 of this application is equipped with multiple ring pipes 11, and adjacent ring pipes 11 are connected by connecting pipes. One ring pipe 11 is connected to an air compressor 2 through an air pipe 15. The biological packing material 8 is arranged vertically between the ring pipes 11. The ring pipes 11 of this application aerate the sewage in the low-pressure reaction tank 1 by introducing air from the air compressor 2. Furthermore, multiple aeration nozzles are evenly distributed circumferentially on the ring pipes 11. The airflow from the aeration nozzles causes the sewage to generate bubbles, thereby causing the biological packing material 8 to chemically react with the sewage, allowing microorganisms in the sewage to attach to it. Bacteria attach to and combine with each other on the surface of the biological packing material 8, forming a biofilm. The sewage, as a culture medium for microorganisms, can increase the number of microbial communities under aeration, thereby improving the water treatment efficiency.

[0025] As another embodiment of this application, such as Figures 3 to 5As shown, the low-pressure reaction tank 1 of this application is also equipped with a foam cleaning mechanism, which includes a rotating pipe 21, a guide pipe 22, a suction pipe 23, and a transmission assembly 24. The rotating pipe 21 is rotatably disposed inside the low-pressure reaction tank 1 and is coaxially rotatably connected to the external foam discharge pipe 28. The guide pipe 22 is connected to the end of the rotating pipe 21. There are multiple suction pipes 23, which are disposed on the guide pipe 22. The transmission assembly 24 is disposed inside the low-pressure reaction tank 1. The pressure relief valve 13 extends into the low-pressure reaction tank 1 through the pressure relief pipe. A pneumatic impeller 25 is disposed on the pressure relief pipe, and the pneumatic impeller 25 is connected to the transmission assembly 24 through a drive gear 26. The transmission assembly 24 includes a driven gear 241, a transmission gear 242, and a ring gear 243. The ring gear 243 is fixedly connected to the rotating tube 21. The driven gear 241 meshes with the driving gear 26, the transmission gear 242 meshes with the driven gear 241, and the ring gear 243 meshes with the transmission gear 242. By setting the transmission assembly 24, when the pressure relief valve 13 is depressurized, the gas passes through the pressure relief pipe to drive the pneumatic impeller 25 to rotate, thereby causing the driving gear 26 to rotate. The driving gear 26 drives the driven gear 241 to rotate, so that the transmission gear 242 connected to the driven gear 241 can drive the ring gear 243 to rotate, thereby causing the rotating tube 21 to rotate inside the low-pressure reaction tank 1. The rotation of the rotating tube 21 drives the guide pipe 22 to rotate, thereby causing the suction pipe 23 on the guide pipe 22 to rotate inside the low-pressure reaction tank 1.

[0026] Specifically, the guide pipe 22 can be connected to the suction pipe 23 through the annular pipe 27, so that multiple suction pipes 23 are spaced apart on the annular pipe 27 in the circumferential direction. That is, the suction pipes 23 can be arranged in the circumferential direction or on a single guide pipe 22, so as to cover the upper part of the sewage in the low-pressure reaction tank 1 by rotating the rotating pipe 21, and to suck out the foam.

[0027] Specifically, the defoaming pipe 28 of this application is connected to the rotating pipe 21 via a rotary connector, allowing the rotating pipe 21 to rotate relative to the defoaming pipe 28. The defoaming pipe 28 is connected to an external pump body. The defoaming pipe 28 can also drive a suction impeller via a drive gear 26 coaxially connected to a pneumatic impeller 25, thereby generating suction within the defoaming pipe 28 to draw out the foam and debris from the upper part of the sewage from the low-pressure reaction tank 1. Furthermore, the suction impeller is driven by a gear meshing with the drive gear 26, causing the pneumatic impeller 25 to rotate, which in turn drives the suction impeller to rotate, thereby generating suction in the defoaming pipe 28 for foam suction and defoaming, as well as debris removal.

[0028] Specifically, the exhaust impeller of this application can also be installed on the exhaust pipe 6 so that the foam cleaning mechanism can work when the exhaust pipe 6 is opened after aeration; furthermore, the exhaust impeller can also be installed in the pipeline of the vacuum machine 3.

[0029] Specifically, it also includes a float, which is located inside the low-pressure reaction tank 1, and the suction port of the suction pipe 23 is fixed to the float; the suction pipe 23 is a sliding telescopic structure, so as to follow the telescopic movement of the float, thereby cleaning up foam and dirt at different heights.

[0030] The working principle of this application is as follows: Wastewater enters the reaction device from the top of the reaction tank. Air compressor 2 is turned on for continuous aeration, stabilizing the tank pressure to 0.2 MPa and dissolved oxygen to 2-4 mg / L. Intermittent aeration is then performed for 2 hours. After aeration, the electric ball valve on exhaust pipe 6 is opened to release the gas from the reaction tank. The vacuum pump is then started, maintaining a vacuum of 0.02-0.04 MPa for 1 hour. The control valve is opened to release the gas and restore the tank to normal pressure. The tank is then allowed to stand for 1 hour before effluent is discharged.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A low-pressure wastewater treatment reaction device, characterized in that... The system includes a low-pressure reaction tank (1), an air compressor (2), a vacuum machine (3), and a booster pump (4). The air compressor (2) is connected to the lower part of the low-pressure reaction tank (1) via an air pipe (15), and the booster pump (4) is connected to the low-pressure reaction tank (1) via a water inlet pipe (5). The vacuum machine (3) is connected to the upper part of the low-pressure reaction tank (1) via a pipeline. The top of the low-pressure reaction tank (1) is provided with an exhaust pipe (6), and the upper part of the low-pressure reaction tank (1) is provided with a drain pipe (7). A check valve (12) is provided on the water inlet pipe (5); a pressure relief valve (13) is provided on the top of the low-pressure reaction tank (1); The low-pressure reaction vessel (1) is provided with multiple ring pipes (11), and adjacent ring pipes (11) are connected by connecting pipes. One ring pipe (11) is connected to the air compressor (2) through the gas pipe (15). The low-pressure reaction vessel (1) is equipped with multiple layers of biological packing material (8), which is arranged vertically between the annular pipes (11); The low-pressure reaction tank (1) is also equipped with a foam cleaning mechanism, which includes a rotating pipe (21), a guide pipe (22), a suction pipe (23), and a transmission assembly (24). The rotating pipe (21) is rotatably installed inside the low-pressure reaction tank (1) and is coaxially rotatably connected to the external foam discharge pipe (28). The guide pipe (22) is connected to the end of the rotating pipe (21). There are multiple suction pipes (23), which are installed on the guide pipe (22). The transmission assembly (24) is installed inside the low-pressure reaction tank (1). The pressure relief valve (13) extends into the low-pressure reaction tank (1) through the pressure relief pipe. The pressure relief pipe is equipped with a pneumatic impeller (25), which is connected to the transmission assembly (24) through a drive gear (26).

2. The low-pressure wastewater treatment reaction device according to claim 1, characterized in that, The bottom of the low-pressure reaction tank (1) is provided with a drain pipe, and ball valves are provided on the drain pipe, the drain pipe (7) and the exhaust pipe (6).

3. The low-pressure wastewater treatment reaction device according to claim 2, characterized in that, It also includes a dissolved oxygen meter (9), which is located in the middle of the low-pressure reaction vessel (1).

4. The low-pressure wastewater treatment reaction device according to claim 3, characterized in that, It also includes an intelligent control cabinet (10), wherein the booster pump (4), air compressor (2), vacuum machine (3) and dissolved oxygen meter (9) are electrically connected to the intelligent control cabinet (10).

5. The low-pressure wastewater treatment reaction device according to claim 1, characterized in that, The transmission assembly (24) includes a driven gear (241), a transmission gear (242), and a ring gear (243). The ring gear (243) is fixedly connected to the rotating tube (21). The driven gear (241) meshes with the driving gear (26) for transmission. The transmission gear (242) meshes with the driven gear (241) for transmission. The ring gear (243) meshes with the transmission gear (242) for transmission.

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