Sewage treatment system with gas recovery and integrated skid-mounted functions based on MBR (Membrane Biological Reactor) process

Abstract

The utility model discloses an MBR (membrane bioreactor) process-based sewage treatment system with gas recovery and integrated skid-mounted functions, which comprises a skid-mounted seat, a filter tank, an anoxic tank, an aerobic tank and an MBR are sequentially mounted on the surface of the top of the skid-mounted seat from left to right, a filter plate is arranged in an inner cavity of the filter tank, and a gas collecting hood is fixedly mounted at the top of the anoxic tank. A gas collecting hood is arranged on the surface of the skid-mounted seat, the top of the gas collecting hood is communicated with a conveying pipe, the other end of the conveying pipe is communicated with a storage tank, and the storage tank is fixedly mounted on the surface of the skid-mounted seat. The generated hydrogen and methane pass through the gas collecting hood and enter the storage tank through the conveying pipe, so that the generated methane and hydrogen are collected, secondary utilization of the methane and hydrogen is facilitated, and the utilization rate of substances generated by sewage treatment is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment systems, in particular to a sewage treatment system based on an MBR process with an integrated skid-mounted gas recovery function. Background Art

[0002] MBR is a new sewage treatment technology that combines the activated sludge method with an integrated immersed separation membrane system. With the support of MBR technology, the sewage treatment equipment can directly recycle and treat municipal and industrial sewage together, so that the sewage can be purified and processed accordingly to meet the discharge standards.

[0003] According to the Chinese patent with publication number CN114262115A, an MBR sewage treatment system is disclosed, which includes a regulating tank, an anoxic tank, and an MBR membrane tank arranged in sequence; it also includes a sewage delivery pump capable of supplying water to the regulating tank, and the regulating tank is provided with a grid, an aeration stirring device, and a liquid level control device; the regulating tank and the anoxic tank are connected by a sewage lifting pump, and the anoxic tank is provided with a packing rack and a first aeration device, and the packing rack is provided with packing; the anoxic tank and the MBR membrane tank are connected by a water inlet pump, and the MBR membrane tank is provided with a membrane assembly and a second aeration device, and the outlet end of the membrane assembly is connected with a clean water pump. The advantages of this MBR sewage treatment system are: it can effectively avoid the defects of environmental pollution and waste of water resources caused by production sewage and domestic wastewater generated during the construction period of the power plant project.

[0004] The above-mentioned MBR sewage treatment system still has some problems in use: although it can effectively avoid the defects of industrial sewage and domestic wastewater generated during the construction period of the power plant project polluting the environment and causing waste of water resources, it cannot collect the usable gas generated by the anoxic tank during sewage treatment, thus causing waste of resources. Utility Model Content

[0005] The purpose of the utility model is to provide a sewage treatment system based on the MBR process with a gas recovery integrated skid-mounted function, so as to solve the problem proposed in the above background technology that the generated usable gas cannot be collected, thus causing a waste of resources.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The sewage treatment system with integrated skid-mounted function of gas recovery based on MBR process comprises a skid-mounted seat, on the top surface of which are sequentially installed from left to right with a filter tank having an inner cavity with a filter plate, an anoxic tank, an aerobic tank, and an MBR membrane bioreactor, the aerobic tank being connected with the MBR membrane bioreactor through a connecting pipe, both sides of the anoxic tank being connected with one side of the MBR membrane bioreactor via conduits, one end of the conduits on both sides of the anoxic tank being connected with the filter tank and the aerobic tank respectively, a water pump being arranged in the middle of the conduit, the water inlet and the water outlet of the water pump being connected with corresponding side conduits, the water pump being fixedly installed on the surface of the skid-mounted seat, a gas collecting hood being fixedly installed on the top of the anoxic tank, a conveying pipe being connected to the top of the gas collecting hood, the other end of the conveying pipe being connected with a storage tank, the storage tank being fixedly installed on the surface of the skid-mounted seat, and a plurality of groups of lifting rings being fixedly installed on the surface of the skid-mounted seat.

[0008] Preferably, a protection box is fixedly installed on one side surface of the anoxic pool, a DSP controller and a display screen are fixedly installed on the inner wall of the protection box, a second gas detector is plugged into the surface of the storage tank, and the detection end of the second gas detector extends to the inner cavity of the storage tank, a first gas detector is fixedly installed on one side surface of the anoxic pool, and the detection end of the first gas detector extends to the inner cavity of the anoxic pool, the signal output ends of the first gas detector and the second gas detector are electrically connected to the signal input end of the DSP controller through wires, and the signal output end of the DSP controller is connected to the signal output end of the display screen through wires.

[0009] Preferably, a blower is fixedly mounted on one side surface of the aerobic pool, the air outlet end of the blower is connected to a U-shaped tube, the other end of the U-shaped tube extends to above the bottom inner wall of the aerobic pool and is connected to a hollow block, one side of the hollow block is connected to several groups of aeration tubes.

[0010] Preferably, a filter cover is sleeved on the surface of the aeration pipe, and two ends of the filter cover are respectively fixedly connected to an inner wall of one side of the aerobic tank and the surface of the hollow block.

[0011] Preferably, a hollow shell is provided in the middle of the delivery pipe, the inner cavity of the delivery pipe is connected to the inner cavity box of the hollow shell, a fan is fixedly installed in the inner cavity of the hollow shell, the signal input end of the fan and the signal output end of the DSP controller are electrically connected together through a wire, and the fan is controlled by the DSP controller.

[0012] Preferably, the inner walls on both sides of the filter pool are provided with card slots, and the filter plate is card-connected to the inner cavity of the card slots.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model uses an anaerobic bacteria to produce hydrogen, methane, etc. by respiration of organic matter through the arrangement of a gas collecting hood, a conveying pipe and a storage tank. The produced hydrogen and methane pass through the gas collecting hood and the conveying pipe into the storage tank, thereby collecting the produced methane and hydrogen, facilitating their secondary utilization, thereby improving the utilization rate of substances produced by sewage treatment.

[0015] 2. The utility model provides a DSP controller and a display screen, so that the staff can intuitively view the data detected by the first gas detector and the second detector by viewing the display screen, thereby understanding the gas content in the anoxic pool and the storage tank.

[0016] 3. The utility model uses the setting of the DSP controller and the fan, and can adjust the parameters of the DSP controller. When the gas content in the anaerobic tank is higher than the set value, the DSP controller starts the fan to increase the air flow rate in the delivery pipe, so as to quickly pump the gas in the anaerobic tank into the storage tank, thereby controlling the gas content in the anaerobic tank and ensuring that the gas content in the anaerobic tank is within a safe range. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a sewage treatment system with integrated skid-mounted function of gas recovery based on the MBR process of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the card slot of the utility model;

[0019] Figure 3 It is a schematic diagram of the installation position of the second gas detector of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-section of the hollow shell of the utility model

[0021] Figure 5 This is a schematic diagram of the structure of the filter cover of the utility model

[0022] Figure 6 It is a structural schematic diagram of the protection box of the utility model.

[0023] In the figure: 100, skid mount; 101, lifting ring; 102, ladder; 103, aerobic tank; 104, water pump; 105, catheter; 106, MBR membrane bioreactor; 107, connecting pipe; 200, filter tank; 201, water inlet pipe; 202, filter plate; 203, slot; 300, storage tank; 301, delivery pipe; 302, gas collection hood; 303, first gas detector; 304, anoxic tank; 305, protection box; 306, hollow shell; 307, second gas detector; 308, fan; 309, display screen; 310, DSP controller; 400, U-tube; 401, blower; 402, hollow block; 403, aeration pipe; 404, filter hood. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6The present embodiment provides a wastewater treatment system with integrated skid-mounted function of gas recovery based on MBR process, including a skid-mounted seat 100, on the top surface of the skid-mounted seat 100, a filter tank 200 with a filter plate 202 in the inner cavity, an anoxic tank 304, an aerobic tank 103, and an MBR membrane bioreactor 106 are installed in sequence from left to right. The aerobic tank 103 is connected to the MBR membrane bioreactor 106 through a connecting pipe 107, and both sides of the anoxic tank 304 are connected to the MBR membrane bioreactor A conduit 105 is connected to one side of the anoxic pool 304, and one end of the conduits 105 on both sides of the anoxic pool 304 are respectively connected to the filter pool 200 and the aerobic pool 103. A water pump 104 is arranged in the middle of the conduit 105, and the water inlet and outlet of the water pump 104 are connected to the corresponding side conduits 105. The water pump 104 is fixedly installed on the surface of the skid-mounted seat 100. A gas collecting hood 302 is fixedly installed on the top of the anoxic pool 304, and the top of the gas collecting hood 302 is connected to a delivery pipe 301. The delivery pipe 301 The other end is connected with a storage tank 300, which is fixedly mounted on the surface of the skid-mounted seat 100. Several groups of lifting rings 101 are fixedly mounted on the surface of the skid-mounted seat 100. Through the arrangement of the gas collecting hood 302, the delivery pipe 301 and the storage tank 300, anaerobic bacteria use organic matter to produce hydrogen, methane, etc. by respiration. The produced hydrogen and methane pass through the gas collecting hood 302 and the delivery pipe 301 into the storage tank 300, thereby collecting the produced methane and hydrogen for secondary utilization, thereby improving the utilization rate of the substances produced by sewage treatment, integrating the filter tank 200, the anoxic tank 304, the aerobic tank 103, and the MBR membrane bioreactor 106 on the skid-mounted seat 100, and through the arrangement of the lifting ring 101, when the sewage treatment system is moved, it is directly lifted and moved away through the lifting ring 101, thereby facilitating its movement and saving the construction workload generated by moving the sewage treatment system.

[0026] Furthermore, a protective box 305 is fixedly installed on one side surface of the anoxic pool 304, and a DSP controller 310 and a display screen 309 are fixedly installed on the inner wall of the protective box 305, wherein the DSP controller 310 is TMS320F2812, a second gas detector 307 is plugged into the surface of the storage tank 300, and the detection end of the second gas detector 307 extends to the inner cavity of the storage tank 300, and a first gas detector 303 is fixedly plugged into the surface of the anoxic pool 304, and the detection end of the first gas detector 303 extends to the inner cavity of the anoxic pool 304, and the signal output ends of the first gas detector 303 and the second gas detector 307 are connected. The signal input end of the DSP controller 310 is electrically connected through a wire, and the signal output end of the DSP controller 310 is connected to the signal output end of the display screen 309 through a wire. The first gas detector 303 and the second gas detector 307 are of model TGS6812-D00, which can detect the concentrations of hydrogen, methane and isobutane in the space. Through the settings of the DSP controller 310 and the display screen 309, the staff can intuitively view the data detected by the first gas detector 303 and the second detector by checking the display screen 309, thereby understanding the gas content in the anoxic pool 304 and the storage tank 300.

[0027] Furthermore, a blower 401 is fixedly installed on the surface of one side of the aerobic tank 103, and a ladder 102 is fixedly installed on the other side of the aerobic tank 103. The air outlet end of the blower 401 is connected to a U-shaped tube 400, and the other end of the U-shaped tube 400 extends to the top of the bottom inner wall of the aerobic tank 103 and is connected to a hollow block 402. One side of the hollow block 402 is connected to a plurality of groups of aeration tubes 403. Through the arrangement of the blower 401 and the U-shaped tube 400, air is transported to the hollow block 402 through the U-shaped tube 400, and enters the sewage through the aeration tube 403, thereby increasing the oxygen content in the sewage, and then oxidizing and decomposing organic matter in the sewage, and removing ammonia nitrogen and nitric nitrogen in the wastewater.

[0028] It is worth mentioning that a filter cover 404 is sleeved on the surface of the aeration pipe 403, wherein the filter cover 404 is arranged in a cylindrical shape, and the two ends of the filter cover 404 are respectively fixedly connected to the inner wall of one side of the aerobic tank 103 and the surface of the hollow block 402. The setting of the filter cover 404 prevents large impurities from being filtered and prevents impurities from clogging the air outlet holes on the surface of the aeration pipe 403.

[0029] Preferably, a hollow shell 306 is provided in the middle of the delivery pipe 301, and the inner cavity of the delivery pipe 301 is connected to the inner cavity box of the hollow shell 306. A fan 308 is fixedly installed in the inner cavity of the hollow shell 306. The signal input end of the fan 308 and the signal output end of the DSP controller 310 are electrically connected together through a wire. The fan 308 is controlled by the DSP controller 310. Through the settings of the DSP controller 310 and the fan 308, and the parameters of the DSP controller 310 can be adjusted, when the gas content in the anaerobic tank is higher than the set value, the DSP controller 310 starts the fan 308 to increase the air flow rate in the delivery pipe 301, thereby quickly pumping the gas in the anaerobic tank into the storage tank 300, thereby controlling the gas content in the anaerobic tank.

[0030] Furthermore, the inner walls on both sides of the filter pool 200 are provided with card slots 203, and the filter plate 202 is card-connected to the inner cavity of the card slots 203. Through the setting of the card slots 203, when the filter pool 200 is used for a long time and a large number of impurities are attached to the surface of the filter plate 202, the filter plate 202 can be taken out from the card slots 203 and cleaned, thereby ensuring the filtering effect of the filter plate 202.

[0031] Working principle:

[0032] First, the water inlet pipe 201 is connected to the sewage pipe, and the filter tank 200 performs preliminary filtration on impurities and garbage in the sewage, and the sewage is pumped to the anoxic tank 304 through the water pump 104 for treatment. The organic matter in the wastewater is degraded and treated by anaerobic bacteria. In an anaerobic environment, anaerobic bacteria will use organic matter to breathe to produce hydrogen, methane, etc. The produced hydrogen and methane pass through the gas collecting hood 302 and the conveying pipe 301 into the storage tank 300, so that the staff can intuitively view the data detected by the first gas detector 303 and the second gas detector 303 by viewing the display screen 309, so as to understand the gas content in the anoxic tank 304 and the storage tank 300. And the parameters of the DSP controller 310 can be adjusted. When the gas content in the anaerobic tank is higher than the set value, the DSP controller 310 starts the fan 308 to increase the air flow rate in the delivery pipe 301, so that the gas in the anaerobic tank is quickly pumped into the storage tank 300, so as to control the gas content in the anaerobic tank. When the treated sewage is pumped from the anaerobic tank to the aerobic tank 103, the oxygen content in the sewage is increased, so that the organic matter in the sewage is oxidized and decomposed, and the ammonia nitrogen and nitric nitrogen in the wastewater are removed, and finally it flows into the MBR membrane bioreactor 106, and is treated by the MBR membrane bioreactor 106, and finally it can be pumped out from the MBR membrane bioreactor 106.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The sewage treatment system based on MBR process with integrated skid-mounted gas recovery function is characterized by: The invention comprises a skid-mounted seat (100), wherein a filter tank (200) having a filter plate (202) in its inner cavity, an anoxic tank (304), an aerobic tank (103), and an MBR membrane bioreactor (106) are sequentially installed on the top surface of the skid-mounted seat (100) from left to right, wherein the aerobic tank (103) is connected to the MBR membrane bioreactor (106) via a connecting pipe (107), and conduits (105) are connected to one side of the MBR membrane bioreactor (106) at both sides of the anoxic tank (304), and one end of the conduits (105) at both sides of the anoxic tank (304) is connected to the filter tank (200) and the aerobic tank (103) respectively. A water pump (104) is arranged in the middle of the conduit (105), the water inlet and the water outlet of the water pump (104) are connected to the corresponding side conduit (105), the water pump (104) is fixedly installed on the surface of the skid-mounted seat (100), the top of the anoxic pool (304) is fixedly installed with an air collecting hood (302), the top of the air collecting hood (302) is connected with a delivery pipe (301), the other end of the delivery pipe (301) is connected with a storage tank (300), the storage tank (300) is fixedly installed on the surface of the skid-mounted seat (100), and the surface of the skid-mounted seat (100) is fixedly installed with a plurality of lifting rings (101).

2. The sewage treatment system with integrated skid-mounted function of gas recovery based on MBR process according to claim 1 is characterized in that; A protection box (305) is fixedly installed on one side surface of the anoxic pool (304), and a DSP controller (310) and a display screen (309) are fixedly installed on the inner wall of the protection box (305). A second gas detector (307) is plugged into the surface of the storage tank (300), and the detection end of the second gas detector (307) extends to the inner cavity of the storage tank (300). A first gas detector (303) is fixedly installed on one side surface of the anoxic pool (304), and the detection end of the first gas detector (303) extends to the inner cavity of the anoxic pool (304). The signal output ends of the first gas detector (303) and the second gas detector (307) are electrically connected to the signal input end of the DSP controller (310) through a wire, and the signal output end of the DSP controller (310) is connected to the signal output end of the display screen (309) through a wire.

3. The sewage treatment system with integrated skid-mounted function of gas recovery based on MBR process according to claim 1 is characterized by: A blower (401) is fixedly mounted on one side surface of the aerobic pool (103); an air outlet end of the blower (401) is connected to a U-shaped tube (400); the other end of the U-shaped tube (400) extends to the top of the bottom inner wall of the aerobic pool (103) and is connected to a hollow block (402); one side of the hollow block (402) is connected to a plurality of groups of aeration tubes (403).

4. The sewage treatment system with integrated skid-mounted function of gas recovery based on MBR process according to claim 3 is characterized by: The surface of the aeration pipe (403) is sleeved with a filter cover (404), and both ends of the filter cover (404) are respectively fixedly connected to the inner wall of one side of the aerobic tank (103) and the surface of the hollow block (402).

5. The sewage treatment system with integrated skid-mounted function of gas recovery based on MBR process according to claim 2 is characterized by: A hollow shell (306) is provided in the middle of the delivery pipe (301); the inner cavity of the delivery pipe (301) is connected to the inner cavity box of the hollow shell (306); a fan (308) is fixedly installed in the inner cavity of the hollow shell (306); the signal input end of the fan (308) and the signal output end of the DSP controller (310) are electrically connected together through a wire; and the fan (308) is controlled by the DSP controller (310).

6. The sewage treatment system with integrated skid-mounted function of gas recovery based on MBR process according to any one of claims 1 to 5, characterized in that: The inner walls on both sides of the filter pool (200) are provided with clamping grooves (203), and the filter plate (202) is clamped in the inner cavity of the clamping grooves (203).

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