Intelligent assembly type MABR sewage treatment equipment capable of enhancing denitrification effect

Abstract

The invention relates to intelligent assembly type MABR sewage treatment equipment capable of enhancing the denitrification effect, the intelligent assembly type MABR sewage treatment equipment comprises a box body and an intelligent control system, the interior of the box body is divided into a water inlet buffer pool, an anaerobic pool, an MABR membrane pool, an aerobic pool, a precipitation buffer area, a precipitation pool, a backflow pool, a disinfection pool and an equipment room through partition plates and perforated lattice walls, and the intelligent control system comprises a cabinet body. A touch screen, a circuit breaker, an ammeter, a fuse, a guide rail socket, a fuse terminal, a power supply module, a CPU module, an isolator, a power distribution terminal, an electromagnetic relay, a DTU, a contactor, a thermal relay, a wire inlet terminal and a power distribution terminal are arranged in the cabinet body. The problems that integrated equipment adopting a traditional sewage treatment process is low in denitrification efficiency, high in energy consumption, large in occupied area and low in intelligent degree, and a highly-integrated installation mode does not utilize internal equipment for overhaul and replacement are solved. The device is mainly used for small-scale and distributed domestic sewage treatment with high total nitrogen and low carbon nitrogen ratio.

Description

Technical Field

[0001] The present invention belongs to the technical field of MABR membrane domestic sewage treatment, and particularly relates to an intelligent prefabricated MABR sewage treatment device with enhanced denitrification effect. Background Art

[0002] In the treatment of domestic sewage, the removal of total nitrogen has always been a major difficulty. Traditional denitrification processes mostly rely on the activated sludge method and its derivative technologies, and achieve nitrification-denitrification reactions by constructing alternating aerobic and anoxic environments, thereby achieving denitrification. However, such processes have significant technical bottlenecks. First, the metabolic competition between nitrifying bacteria and denitrifying bacteria leads to limited reactor volume load, and the denitrification efficiency is generally lower than 80%. Moreover, the activities of nitrifying bacteria and denitrifying bacteria are extremely vulnerable to low temperatures, resulting in the stability of meeting the standards. Second, a large amount of carbon source is required in the denitrification stage. For domestic sewage with high total nitrogen and low carbon-nitrogen ratio, additional carbon source needs to be added, increasing the treatment cost per ton of water by 15%-30%. Third, the series connection of anoxic-aerobic alternating reaction tanks leads to a large floor area, and the aeration energy consumption during the reaction process accounts for 50% or even a higher proportion of the total energy consumption of the system.

[0003] In recent years, the MABR membrane technology has gradually been applied to the sewage treatment field due to its gas-liquid countercurrent mass transfer, which can achieve simultaneous nitrification and denitrification (SND) and complete the denitrification process in a single reactor. Existing integrated sewage treatment devices generally have low denitrification efficiency, unstable effluent, poor film-forming effect of fillers, inconvenient maintenance and replacement due to integrated fixed installation, low degree of intelligence, and require special personnel for operation and management. Especially for small-scale and decentralized sewage treatment scenarios, existing various integrated sewage treatment devices are difficult to achieve stable effluent meeting the standards, rapid assembly and intelligent regulation, which restricts their large-scale application in typical scenarios such as towns and scenic spots. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems. The present application proposes an intelligent prefabricated MABR sewage treatment device with enhanced denitrification effect. A textile layer is attached to the surface of the MABR membrane to improve the film-forming effect of the membrane, thereby increasing the number of microorganisms, enhancing the denitrification effect of sewage treatment, and improving the effluent stability.

[0005] To achieve the above object, the present invention provides the following technical solutions: An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect, including a box body and an intelligent control system. The interior of the box body is divided into an influent buffer tank, an anaerobic tank, an MABR membrane tank, an aerobic tank, a sedimentation buffer zone, a sedimentation tank, a reflux tank, a disinfection tank and an equipment room by partitions and perforated flower walls. An influent port is arranged near the top of the influent buffer tank, and an electromagnetic flowmeter is arranged on the influent port. An anaerobic tank agitator is arranged in the anaerobic tank. An MABR membrane and an anoxic tank agitator are arranged in the MABR membrane tank. An aeration device and an internal reflux pump are arranged in the aerobic tank. The baffle between the sedimentation buffer zone and the sedimentation tank is a perforated flower wall. The sedimentation tank is a inclined tube sedimentation tank with a conical bottom, and inclined tube fillers and triangular weir troughs are installed inside. The triangular weir trough is communicated with the disinfection tank. An outlet is arranged on the outer wall of the disinfection tank. The bottom of the sedimentation tank is connected to the reflux tank through a sedimentation tank sludge discharge pipe. An external reflux pump and a sludge discharge pump are arranged in the reflux tank. A sludge discharge port is opened on the outer wall of the reflux tank. A protective door is arranged in the equipment room, and an aeration blower, a phosphorus removal chemical dosing device and a disinfection chemical dosing device are arranged inside the protective door.

[0006] Further: The intelligent control system includes a cabinet body, which is of a double-layer structure. A glass window observation port is arranged on the outer layer door. A touch screen is arranged at the middle upper position of the second-layer cabinet door of the cabinet body. A circuit breaker, an electric meter and a fuse are arranged in sequence from left to right at the upper end inside the cabinet body. A circuit breaker, a rail socket and a fuse terminal are arranged below the fuse. The core component inside the cabinet body is a CPU module. A power module is arranged on the left side of the CPU module, and an isolator and a distribution terminal are arranged on the right side. An electromagnetic relay and a DTU are arranged at the middle part inside the cabinet body. A contactor and a thermal relay are arranged below the electromagnetic relay. Terminals and distribution terminals are arranged at the lower part inside the cabinet body, and the terminals and distribution terminals are arranged in two rows.

[0007] Further: The box body is made of carbon steel corrugated board, insulated with rock wool sandwich board on the outside, and a steel ladder is arranged on the side close to the anaerobic tank, and a protective railing is arranged on the top.

[0008] Further: Water passing holes are opened on the partitions; Multiple groups of Φ50 water distribution holes are arranged at the middle part of the perforated flower wall.

[0009] Further: A textile layer is attached to the outer wall of the MABR membrane, and the MABR membrane is fixed by two limit guide rods.

[0010] Preferably: The anaerobic tank agitator is a hyperbolic agitator with a rain cover, and the motor protection level is IP65; The anoxic tank agitator is a submersible agitator with a non-fixed installation.

[0011] Preferably, the aerator is respectively connected to the MABR membrane tank and the aeration device through process pipelines. A branch pipe is also provided on the aeration fan and connected to the dissolution medicine tank of the phosphorus removal chemical dosing device. An electromagnetic valve and a manual valve are provided on the branch pipe.

[0012] Preferably, both the phosphorus removal chemical dosing device and the disinfection chemical dosing device are skid-mounted equipment, integrating a chemical dosing tank, a chemical dosing pump and a liquid level gauge.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: This sewage treatment equipment couples the traditional process with the MABR membrane, strengthening the effect of nitrogen removal in sewage treatment, improving the effluent stability. The overall nitrogen removal efficiency is increased by more than 20% compared with the traditional process. Moreover, the high mass transfer performance of the MABR greatly reduces the energy consumption of the fan, and the overall energy consumption of the system is reduced by more than 30% compared with the traditional process. A dense textile layer is attached to the surface of the MABR membrane to improve the membrane fouling effect, and then the number of microorganisms is increased.

[0014] This equipment is assembled in a modular manner, which is convenient for installation and replacement. When overhauling and replacing the supporting equipment, the sewage treatment equipment does not need to be shut down. The intelligent control configured in the equipment can realize the automatic operation regulation and operation data recording of the equipment, and at the same time has a fault alarm function, greatly alleviating the disadvantages of manual maintenance and management of the equipment.

[0015] The whole equipment is miniaturized and can be flexibly configured according to the treatment scale and scenario, making up for and broadening the large-scale application market of the integrated sewage treatment equipment in small-scale and decentralized sewage treatment scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only for more clearly illustrating the technical solutions of the embodiments of the present invention or the prior art. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0017] Figure 1 It is a plan view of the overall structure schematic diagram of the present invention; Figure 2 It is an elevation structure schematic diagram of the overall structure schematic diagram of the present invention; Figure 3 It is an external shape schematic diagram of the intelligent control system of the present invention; Figure 4 It is an external shape schematic diagram of the second-layer cabinet of the intelligent control system of the present invention; Figure 5 It is an internal structure schematic diagram of the intelligent control of the present invention; In the figure: 1 - box body, 101 - cabinet body, 102 - glass window observation port, 103 - touch screen, 104 - circuit breaker, 105 - electricity meter, 106 - fuse, 107 - rail socket, 108 - insurance terminal, 109 - power module, 110 - CPU module, 111 - isolator, 112 - distribution terminal, 113 - electromagnetic relay, 114 - DTU, 115 - contactor, 116 - thermal relay, 117 - terminal, 118 - distribution terminal; 2 - inlet buffer zone, 3 - anaerobic tank, 4 - MABR membrane tank, 5 - aerobic tank, 6 - sedimentation buffer zone, 7 - sedimentation tank, 8 - reflux tank, 9 - disinfection tank, 10 - equipment room, 11 - water inlet, 12 - water outlet, 13 - sludge discharge port, 14 - anaerobic tank agitator, 15 - MABR membrane module, 16 - anoxic tank agitator, 17 - aeration device, 18 - internal reflux pump, 19 - external reflux pump, 20 - sludge discharge pump, 21 - aeration fan, 22 - phosphorus removal chemical dosing device, 23 - disinfection chemical dosing device, 24 - partition board, 25 - perforated flow - through wall, 26 - sedimentation tank sludge discharge pipe, 27 - inclined tube packing, 28 - triangular weir trough, 29 - electromagnetic flowmeter, 30 - vortex - street flowmeter, 31 - solenoid valve, 32 - manual valve, 33 - process pipeline, 34 - limit guide rod, 35 - steel ladder, 36 - protective railing, 37 - rock wool sandwich panel, 38 - protective door. Specific implementation manners

[0018] In order to enable those skilled in the art to better understand and implement the technical solution of the present invention, the present invention will be further described below in conjunction with specific embodiments. However, the specific embodiments cited are only for the illustration of the present invention and do not limit the present invention.

[0019] As Figures 1 - 2An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect, comprising a box body 1 and an intelligent control system. The box body 1 is made of corrugated steel plate of carbon steel material, and the outside is insulated by a rock wool sandwich panel 37. Inside the box body 1, it is divided into an influent buffer tank 2, an anaerobic tank 3, an MABR membrane tank 4, an aerobic tank 5, a sedimentation buffer zone 6, a sedimentation tank 7, a reflux tank 8, a disinfection tank 9 and an equipment room 10 through a partition plate 24 and a perforated flower wall 25. On one side of the box body 1 near the anaerobic tank, a steel ladder 35 is arranged. At the position near the top of the influent buffer tank 2, an influent port 11 is arranged, and an electromagnetic flowmeter 29 is provided on the influent port 11. In the anaerobic tank 3, an anaerobic tank agitator 14 is arranged. The anaerobic tank agitator 14 is a hyperbolic agitator with a rain cover, and the motor protection level is IP65. In the aerobic tank 5, an aeration device 17 and an internal reflux pump 18 are arranged. The internal reflux pump 18 is connected to the front end of the MABR membrane tank 4 through a process pipeline 33. In the MABR membrane tank 4, an MABR membrane 15 and an anoxic tank agitator 16 are arranged. A textile layer is attached to the outer wall of the MABR membrane 15. The MABR membrane 15 is fixed by two limit guide rods 34. The anoxic tank agitator 16 is a submersible agitator and is installed in a non-fixed manner. The perforated flower wall 25 is located between the sedimentation buffer zone 6 and the sedimentation tank 7, and multiple groups of Φ50 water distribution holes are arranged in the middle of the perforated flower wall. The sedimentation tank 7 is a inclined tube sedimentation tank with a conical bottom, and inclined tube fillers 27 and triangular weir troughs 28 are installed inside. The triangular weir trough 28 is communicated with the disinfection tank 9. An outlet 12 is arranged on the outer wall of the disinfection tank 9. The bottom of the sedimentation tank 7 is connected to the reflux tank 8 through a sedimentation tank sludge discharge pipe 26. An external reflux pump 19 and a sludge discharge pump 20 are arranged in the reflux tank 8. A sludge discharge port 13 is opened on the outer wall of the reflux tank 8. The external reflux pump 19 is connected to the influent buffer tank 2 through a process pipeline 33. The internal reflux pump 18, the external reflux pump 19 and the sludge discharge pump 20 are all submersible sludge discharge pumps and are installed in a coupling form.

[0020] In the equipment room 10, a protective door 38 is arranged. Inside the protective door 38, an aeration blower 21, a phosphorus removal chemical dosing device 22 and a disinfection chemical dosing device 23 are arranged. The aeration blower 21 is connected to the MABR membrane 15 and the aeration device 17 respectively through a process pipeline 33. A vortex flowmeter 30 and a manual valve 32 are arranged on the process pipeline connecting to the MABR membrane 15. A branch pipe of the aeration blower 21 is also connected to the inlet solution tank of the phosphorus removal chemical dosing device 22, and a solenoid valve 31 and a manual valve 32 are arranged on the branch pipe. The phosphorus removal chemical dosing device 22 and the disinfection chemical dosing device 23 are both skid-mounted equipment, integrating a chemical dosing tank, a chemical dosing pump and a liquid level gauge.

[0021] Preferably: Except for the main pipe of the aeration blower located in the equipment room, the process pipeline 33 is made of PVC-U material, and the other pipelines are made of carbon steel material.

[0022] As shown Figures 3 - 5 in the figure, the intelligent control system includes a cabinet body 101, the cabinet body 101 is of a double-layer structure, a glass window observation port 102 is arranged on the outer layer door, a touch screen 103 is arranged at the middle upper position of the second-layer cabinet door of the cabinet body 101, a circuit breaker 104, an electric meter 105 and a fuse 106 are sequentially arranged at the upper end inside the cabinet body 101 from left to right, a circuit breaker 104, a rail socket 107 and an insurance terminal 108 are arranged below the fuse 106; the core component inside the cabinet body 101 is a CPU module 110; a power module 109 is arranged on the left side of the CPU module 110, an isolator 111 and a distribution terminal 112 are arranged on the right side; an electromagnetic relay 113 and a DTU 114 are arranged at the middle part inside the cabinet body 101; a contactor 115 and a thermal relay 116 are arranged below the electromagnetic relay 113; terminals 117 and distribution terminals 118 are arranged at the lower part inside the cabinet body 101, and the terminals 117 and the distribution terminals 118 are arranged in two rows.

[0023] Working process: The operation of the sewage treatment equipment is executed by the intelligent control system. Sewage enters the inlet buffer tank through the inlet, and then flows through the anaerobic tank, MABR tank, aerobic tank, sedimentation buffer zone, sedimentation tank, and disinfection tank in sequence and is discharged from the outlet. The aeration blower provides the aeration volume for the MABR membrane in the MABR membrane tank and the aeration device in the aerobic tank. The muddy water mixture in the aerobic tank flows into the sedimentation buffer zone and then enters the sedimentation tank after being evenly distributed by the perforated flower wall. Part of the muddy water mixture in the aerobic tank is refluxed to the MBAR membrane tank through the internal reflux pump. When the mixed liquid in the aerobic tank enters the sedimentation tank, the phosphorus removal dosing device adds phosphorus removal agents to the inlet of the sedimentation tank for chemical phosphorus removal. The sludge in the sedimentation tank is discharged to the reflux tank through the sedimentation tank sludge discharge pipe and then pumped to the front inlet buffer tank through the external reflux pump to supplement the front-end sludge concentration. The surplus sludge is discharged from the sludge discharge port through the sludge discharge pump. The supernatant of the sedimentation tank flows to the disinfection tank through the triangular weir trough and is disinfected by the disinfection dosing device, and then is discharged through the outlet after reaching the standard.

[0024] The content not described in detail in the present invention is the prior art.

[0025] It should be noted that the above-described content is all the components of the present invention. Without departing from the technical principle of the present application, those skilled in the art can combine the technical solutions in the above embodiments, or make equivalent changes or replacements to the relevant technical features. Any changes and equivalent replacements made within the technical concept and / or technical principle of the present application will fall within the protection scope of the present application.

Claims

1. An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect, comprising a box body (1) and an intelligent control system. The interior of the box body (1) is divided into an influent buffer tank (2), an anaerobic tank (3), an MABR membrane tank (4), an aerobic tank (5), a sedimentation buffer zone (6), a sedimentation tank (7), a reflux tank (8), a disinfection tank (9) and an equipment room (10) by a partition board (24) and a perforated flower wall (25), and is characterized in that: The inlet buffer tank (2) is provided with an inlet (11) near the top of the tank. An electromagnetic flowmeter (29) is installed on the inlet (11). An anaerobic tank mixer (14) is arranged in the anaerobic tank (3). An MABR membrane (15) and an anoxic tank mixer (16) are arranged in the MABR membrane tank (4). An aeration device (17) and an internal reflux pump (18) are arranged in the aerobic tank (5). The baffle between the sedimentation buffer zone (6) and the sedimentation tank (7) is a perforated flower wall (25). The sedimentation tank (7) is a inclined tube sedimentation tank with a conical bottom, and is internally equipped with inclined tube packing (27) and triangular weir troughs (28). The triangular weir troughs (28) are communicated with the disinfection tank (9). An outlet (12) is arranged on the outer wall of the disinfection tank (9). The bottom of the sedimentation tank (7) is connected to the reflux tank (8) through a sedimentation tank sludge discharge pipe (26). An external reflux pump (19) and a sludge discharge pump (20) are arranged in the reflux tank (8). A sludge discharge port (13) is opened on the outer wall of the reflux tank (8); A protective door (38) is arranged in the equipment room (10). An aeration blower (21), a phosphorus removal chemical dosing device (22) and a disinfection chemical dosing device (23) are arranged inside the protective door (38).

2. The intelligent prefabricated MABR sewage treatment equipment for enhancing denitrification effect according to claim 1, wherein: The intelligent control system includes a cabinet body (101). The cabinet body (101) is of a double-layer structure. A glass window observation port (102) is arranged on the outer layer door. A touch screen (103) is arranged at the middle upper position of the second-layer cabinet door of the cabinet body (101). A circuit breaker (104), an ammeter (105) and a fuse (106) are sequentially arranged at the upper end inside the cabinet body (101) from left to right. A circuit breaker (104), a rail socket (107) and a fuse terminal (108) are arranged below the fuse (106); The core component inside the cabinet body (101) is a CPU module (110); A power module (109) is arranged on the left side of the CPU module (110), and an isolator (111) and a power distribution terminal (112) are arranged on the right side; An electromagnetic relay (113) and a DTU (114) are arranged at the middle part inside the cabinet body (101); A contactor (115) and a thermal relay (116) are arranged below the electromagnetic relay (113); Terminals (117) and power distribution terminals (118) are arranged at the lower part inside the cabinet body (101). The terminals (117) and the power distribution terminals (118) are arranged in two rows.

3. An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect according to claim 1, characterized in that: The box body (1) is made of carbon steel corrugated board, insulated with rock wool sandwich board (37) on the outside, and a steel ladder (35) is arranged on the side close to the anaerobic tank (3), and a protective railing (36) is arranged on the top.

4. An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect according to claim 1, characterized in that: Water passing holes are opened on the partition board (24); Multiple groups of water distribution holes with a diameter of Φ50 are arranged at the middle part of the perforated flower wall (25).

5. An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect according to claim 1, characterized in that: A textile layer is attached to the outer wall of the MABR membrane (15). The MABR membrane (15) is fixed by two limit guide rods (34).

6. The intelligent prefabricated MABR sewage treatment equipment for enhancing denitrification effect according to claim 1, characterized in that: The anaerobic tank mixer (14) is a hyperbolic mixer with a rain cover, and the motor protection level is IP65; The anoxic tank mixer (16) is a submersible mixer and is installed in a non-fixed manner.

7. The intelligent assembled MABR sewage treatment equipment for enhancing denitrification effect according to claim 1, characterized in that: The internal reflux pump (18), external reflux pump (19) and sludge discharge pump (20) are all submersible sludge discharge pumps, and are installed in a coupling form. The internal reflux pump (18) is connected to the front end of the MABR membrane tank (4) through a process pipeline (33), and the external reflux pump (19) is connected to the influent buffer tank (2) through the process pipeline (33).

8. An intelligent prefabricated MABR sewage treatment device for enhancing denitrification effect according to claim 1, characterized in that: The aeration blower (21) is respectively connected to the MABR membrane tank (4) and the aeration device (17) through a process pipeline (33). A branch pipe is also provided on the aeration blower (21) and is connected to the dissolution medicine tank of the phosphorus removal chemical dosing device (22). A solenoid valve (31) and a manual valve (32) are provided on the branch pipe.

9. The intelligent prefabricated MABR sewage treatment equipment for enhancing denitrification effect according to claim 1, characterized in that: The phosphorus removal chemical dosing device (22) and the disinfection chemical dosing device (23) are both skid-mounted equipment, integrating a chemical dosing tank, a chemical dosing pump and a liquid level gauge into one body.

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