MBR-sulfur autotrophic deep denitrification integrated membrane box
By adding a sulfur autotrophic deep denitrification zone after the MBR membrane tank, an autotrophic denitrification system is constructed, which solves the problems of low total nitrogen removal rate and high carbon source consumption in the integrated MBR membrane tank, and achieves efficient and economical wastewater treatment.
Patent Information
- Application Number
- CN202423007513.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing integrated MBR membrane boxes have limited total nitrogen removal rates, rely on heterotrophic denitrification processes, consume large amounts of carbon source reagents, have high operating costs, and are difficult to achieve deep nitrogen removal and control carbon emissions.
An autotrophic denitrification zone is added after the MBR membrane tank to construct an autotrophic denitrification system. Sulfotrophic bacteria are used to remove nitrate nitrogen from the MBR membrane effluent. Electrons are provided by adding denitrification materials to form an autotrophic denitrification process.
To improve total nitrogen removal rate, reduce sludge production, save on reagent costs, achieve efficient wastewater treatment, reduce operating costs, and achieve the goals of energy conservation and emission reduction.
Smart Images
Figure CN223522361U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of MBR-sulfur autotrophy deep denitrification integrated membrane box. BACKGROUND
[0002] MBR integrated membrane box is the system that MBR (membrane bioreactor) technology is combined with biological denitrification process, can strengthen denitrification effect.A / O-MBR process, including anoxic tank, aerobic tank and membrane component, is one of the most widely used MBR denitrification and phosphorus removal processes in China at present.The characteristics of this process are the combination of anoxic and aerobic environment, which is conducive to the growth of different microbial flora, can remove organic matter, nitrogen, phosphorus and other nutrient salt pollutants at the same time, and can strictly control the level of suspended solids (SS) in effluent, and the process flow is simple.
[0003] MBR integrated membrane box is usually composed of a container shell, an anoxic zone, an aerobic zone, an MBR membrane tank and a equipment room. The sewage first passes through the anoxic zone, then the aerobic zone, and the organic matter and nitrogen, phosphorus and other pollutants in the sewage are degraded by activated sludge. In the MBR membrane tank, the sludge and water are separated, and the water is pumped out by the water production pump in the equipment room, while the sludge is recycled by the sludge backflow pump in the equipment room. MBR integrated membrane box adopts PLC automatic control, and after reaching the set water production frequency, it will automatically perform water cleaning, chemical washing and other operations. This system is suitable for places with high environmental beautification requirements, inconvenient sewage collection, small amount of sewage, limited sewage treatment space, such as tourist attractions, residential areas, administrative new areas, office buildings, rural towns, etc.
[0004] However, the existing MBR integrated membrane box has the following problems: first, as a combination of traditional activated sludge method and MBR membrane method, its total nitrogen removal rate is limited. Second, the removal of total nitrogen usually depends on heterotrophic denitrification process, which not only consumes a large amount of carbon source reagent and produces more sludge, but also has high operating cost, making it difficult to achieve deep denitrification and carbon emission control at the same time. Therefore, improvement and optimization of MBR integrated membrane box is still an important topic in the field of sewage treatment technology. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a kind of MBR-sulfur autotrophy deep denitrification integrated membrane box.
[0006] The technical scheme of the utility model is as follows:
[0007] A kind of MBR-sulfur autotrophy deep denitrification integrated membrane box has a standard container shell, a gas feeding assembly, a water production backwash assembly, a chemical washing assembly and a PLC automatic control unit,
[0008] The standard container shell has, in sequence, an anoxic tank section, an aerobic tank section, an MBR membrane tank section, a sulfur autotrophic deep denitrification section, a water production tank section, and an equipment room section. The anoxic tank section and the aerobic tank section are separated by a first partition, the aerobic tank section and the MBR membrane tank section are separated by a second partition, the MBR membrane tank section and the sulfur autotrophic deep denitrification section are separated by a third partition, the sulfur autotrophic deep denitrification section and the water production tank section are separated by a fourth partition, and the water production tank section and the equipment room section are separated by a fifth partition. The first partition is provided with a first flow guide pipe for guiding the liquid in the inner cavity of the anoxic tank section to the inner cavity of the aerobic tank section. The second partition is provided with a second flow guide pipe for guiding the liquid in the inner cavity of the aerobic tank section to the inner cavity of the MBR membrane tank section.
[0009] The anoxic tank section is provided with a water inlet pipe, an anoxic tank vent pipe, and an anoxic tank flow inducer.
[0010] The aerobic tank section is provided with an aerobic tank sludge return pump, an aerobic tank sludge return pipe, and an aeration mechanism. The aerobic tank sludge return pump delivers sludge in the aerobic tank section to the anoxic tank section through the aerobic tank sludge return pipe.
[0011] The MBR membrane tank section is provided with an MBR membrane tank sludge return pump, an MBR membrane tank sludge return pipe, and an MBR membrane assembly. The MBR membrane tank sludge return pump returns sludge in the MBR membrane tank section to the aerobic tank section through the MBR membrane tank sludge return pipe.
[0012] The sulfur autotrophic deep denitrification section is provided with S-shaped filter bricks and sulfur autotrophic fillers filling the inner cavity from bottom to top, a sulfur autotrophic deep denitrification effluent tank, a sulfur autotrophic deep denitrification influent main pipe, a sulfur autotrophic deep denitrification influent branch pipe, and a sulfur autotrophic deep denitrification air inlet electric ball valve. The sulfur autotrophic deep denitrification effluent tank is arranged above the sulfur autotrophic fillers and communicates with the water production tank section. One end of the sulfur autotrophic deep denitrification influent main pipe communicates with the sulfur autotrophic deep denitrification influent branch pipe. The sulfur autotrophic deep denitrification influent branch pipe is arranged in the S-shaped filter bricks. The other end of the sulfur autotrophic deep denitrification influent main pipe communicates with the sulfur autotrophic deep denitrification air inlet electric ball valve.
[0013] The water production tank section is provided with a water production tank vent pipe on the side wall and an inner cavity provided with a water production tank backwashing pipe and a water production tank overflow pipe.
[0014] The air supply assembly includes a blower and an air main pipe. The air outlet of the blower communicates with the air hose of the MBR membrane assembly, the aeration mechanism of the aerobic tank section, and the sulfur autotrophic deep denitrification air inlet electric ball valve through the air main pipe.
[0015] The water production backwashing assembly comprises a water production and backwashing pump, one end of the water production and backwashing pump is connected with the water production port of the MBR membrane assembly through an MBR membrane pool water production pipe, and the other end is connected with the inner cavity of the sulfur autotrophic deep denitrification section and the inner cavity of the water production pool section through a switch valve.
[0016] The medicine washing assembly comprises a medicine adding pump and a medicine storage tank, and the medicine storage tank is connected with the water production port of the MBR membrane assembly through the medicine adding pump.
[0017] The water production and backwashing pump, the medicine adding pump, the medicine storage tank and the air blower are arranged in the equipment room section, and the PLC automatic control unit is electrically connected with the water production and backwashing pump, the medicine adding pump, the air blower, the anoxic pool flow inducer, the sludge return pump of the aerobic pool and the sludge return pump of the MBR membrane pool.
[0018] In a preferred embodiment of the utility model, the water inlet end of the water inlet pipe is arranged at the lower part of the side wall, and the water outlet end is arranged at the upper part of the inner cavity of the anoxic pool section away from the side of the first baffle; the anoxic pool vent pipe is arranged at the lower end of the side wall; and the anoxic pool flow inducer is arranged at the lower part of the inner cavity of the anoxic pool section away from the side of the first baffle.
[0019] In a preferred embodiment of the utility model, the sludge return pump of the aerobic pool is arranged at the lower part of the inner cavity of the aerobic pool section close to the side of the first baffle; and the aeration mechanism is arranged at the lower part of the inner cavity of the aerobic pool section.
[0020] In a preferred embodiment of the utility model, the sludge return pump of the MBR membrane pool is arranged at the lower part of the inner cavity of the MBR membrane pool section close to the side of the second baffle.
[0021] In a preferred embodiment of the utility model, the water production pool vent pipe is arranged at the lower part of the side wall of the inner cavity of the water production pool section.
[0022] The utility model discloses a water production backwashing assembly, a medicine washing assembly, an anoxic pool section, an aerobic pool section, an MBR membrane pool section and a water production pool section are arranged in the equipment room section.
[0023] 1. The utility model discloses a sulfur autotrophic deep denitrification section is added to the rear end of MBR membrane pool, is specially used for further processing the effluent of MBR membrane.
[0024] 2, the utility model discloses can improve the removal rate of total nitrogen, and need not use carbon source reagent to save reagent cost. This improvement not only improves the efficiency of sewage treatment, but also reduces the economic burden in the operation process, and it is an economic and environment-friendly sewage treatment technology. BRIEF DESCRIPTION OF DRAWINGS
[0025] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model.
[0026] Fig. 2 It is the internal structure side view of the utility model.
[0027] Fig. 3 It is the internal structure plan view of the utility model. DETAILED DESCRIPTION
[0028] The technical scheme of the utility model will be further explained and described in the embodiment in conjunction with the drawings.
[0029] As shown in Figs. 1-3 , a kind of MBR-sulfur autotrophic deep denitrification integrated membrane box, with a standard container shell 1, a gas sending component 2, a water production backwash component 3, a medicine washing component 4 and a PLC automatic control unit 5,
[0030] Standard container shell 1, as shown in Fig. 1 , in sequence with an anoxic tank section 11, an aerobic tank section 12, an MBR membrane tank section 13, a sulfur autotrophic deep denitrification section 14, a water production tank section 15 and a equipment room section 16, anoxic tank section 11 and aerobic tank section 12 are separated by a first partition 110, aerobic tank section 12 and MBR membrane tank section 13 are separated by a second partition 120, MBR membrane tank section 13 and sulfur autotrophic deep denitrification section 14 are separated by a third partition 130, sulfur autotrophic deep denitrification section 14 and water production tank section 15 are separated by a fourth partition 140, water production tank section 15 and equipment room section 16 are separated by a fifth partition 150;First partition 110 is equipped with first flow guide pipe 1101, to guide the liquid in the inner cavity of anoxic tank section 11 to the inner cavity of aerobic tank section 12;Second partition 120 is equipped with second flow guide pipe 1201, to guide the liquid in the inner cavity of aerobic tank section 12 to the inner cavity of MBR membrane tank section 13.
[0031] The anoxic tank section 11 has an inlet pipe 111, an anoxic tank vent pipe 112 and an anoxic tank pusher 113; preferably, the inlet end of the inlet pipe 111 is arranged at the lower part of the side wall, and the outlet end is arranged at the upper part of the inner cavity of the anoxic tank section 11 on the side away from the first partition 110; the anoxic tank vent pipe 112 is arranged at the lower end of the side wall; and the anoxic tank pusher 113 is arranged at the lower part of the inner cavity of the anoxic tank section 11 on the side away from the first partition 110.
[0032] The aerobic tank section 12 has an aerobic tank sludge return pump 121, an aerobic tank sludge return pipe 122 and an aeration mechanism 123, the aerobic tank sludge return pump 121 conveying sludge in the aerobic tank section 12 to the anoxic tank section 11 through the aerobic tank sludge return pipe 122; preferably, the aerobic tank sludge return pump 121 is arranged at the lower part of the inner cavity of the aerobic tank section 12 on the side close to the first partition 110; and the aeration mechanism 123 is arranged at the lower part of the inner cavity of the aerobic tank section 12.
[0033] The MBR membrane tank section 13 has an MBR membrane tank sludge return pump 131, an MBR membrane tank sludge return pipe 132 and an MBR membrane assembly 133, the MBR membrane tank sludge return pump 131 conveying sludge in the MBR membrane tank section 13 to the aerobic tank section 12 through the MBR membrane tank sludge return pipe 132; preferably, the MBR membrane tank sludge return pump 131 is arranged at the lower part of the inner cavity of the MBR membrane tank section 13 on the side close to the second partition 120.
[0034] The sulfur autotrophic deep denitrification section 14 has S-shaped filter bricks 141 and sulfur autotrophic fillers 142 filled in the inner cavity from bottom to top, and a sulfur autotrophic deep denitrification effluent tank 143, a sulfur autotrophic deep denitrification inlet main pipe 144, a sulfur autotrophic deep denitrification inlet branch pipe 145 and a sulfur autotrophic deep denitrification inlet gas electric ball valve 146, the sulfur autotrophic deep denitrification effluent tank 143 being arranged above the sulfur autotrophic fillers 142 and communicating with the effluent tank section 15, one end of the sulfur autotrophic deep denitrification inlet main pipe 144 communicating with the sulfur autotrophic deep denitrification inlet branch pipe 145, the sulfur autotrophic deep denitrification inlet branch pipe 145 being arranged in the S-shaped filter bricks 141, and the other end of the sulfur autotrophic deep denitrification inlet main pipe 144 communicating with the sulfur autotrophic deep denitrification inlet gas electric ball valve 146;
[0035] The effluent tank section 15 has an effluent tank vent pipe 151 on the side wall, and an effluent tank backwashing pipe 152 and an effluent tank overflow pipe 153 in the inner cavity; preferably, the effluent tank vent pipe 151 is arranged at the lower part of the side wall of the inner cavity of the effluent tank section 15.
[0036] Air supply assembly 2, including a blower 21 and an air main 22, the air outlet of the blower 21 is connected to the air hose of the MBR membrane assembly 133, the aeration mechanism 123 of the aerobic tank section 12 and the sulfur autotrophic deep denitrification inlet electric ball valve 146 through the air main 22;
[0037] Water production backwash assembly 3, including a water production and backwash pump 31, one end of the water production and backwash pump 31 is connected to the water outlet of the MBR membrane assembly 133 through a MBR membrane tank water production pipe, and the other end is connected to the inner cavity of the sulfur autotrophic deep denitrification section 14 and the inner cavity of the above-mentioned water production tank section 15 through a switch valve (not shown in the figure);
[0038] Medicine washing assembly 4, including a medicine adding pump 41 and a medicine storage tank 42, the medicine storage tank 42 is connected to the water outlet of the above-mentioned MBR membrane assembly 133 through the medicine adding pump 41;
[0039] The above-mentioned water production and backwash pump 31, medicine adding pump 41, medicine storage tank 42 and blower 21 are all installed in the equipment room section 16, and the PLC automatic control unit 5 is electrically connected with the above-mentioned water production and backwash pump 31, medicine adding pump 41, blower 21, anoxic tank pusher 113, aerobic tank sludge return pump 121 and MBR membrane tank sludge return pump 131 for control.
[0040] Sewage enters from the water inlet pipe 111 of the anoxic tank, is fully mixed and stirred by the anoxic tank pusher 113, and reacts to degrade COD, ammonia nitrogen, total nitrogen and other substances in the sewage, and the treated mud-water mixture enters the aerobic tank section 12 through the anoxic tank overflow tank.
[0041] Sewage and activated sludge flow from the anoxic tank section 11 to the aerobic tank section 12. The blower 21 of the equipment room section 16 supplies pressurized air to the activated sludge through the aeration mechanism 123 of the aerobic tank section 12 to oxygenate and degrade COD, ammonia nitrogen and other substances in the sewage. The aerobic tank sludge is lifted by the aerobic tank sludge return pump 121 and returned to the anoxic tank section 11 through the aerobic tank sludge return pipe 122.
[0042] The MBR membrane assembly 133 separates the mud-water mixture, and the treated water flows out through the MBR membrane tank water production pipe, and the sludge is left in the membrane tank and lifted by the MBR membrane tank sludge return pump 131 and returned to the aerobic tank section 12 through the MBR membrane tank sludge return pipe. The blower 21 of the equipment room section 16 supplies pressurized air to the MBR membrane assembly 133 to strengthen the disturbance on the surface of the MBR membrane wire, slow down the clogging of the membrane wire surface, and ensure the water production.
[0043] The MBR membrane tank water is lifted by the water production and backwashing pump 31, enters the S-shaped filter brick 141 through the sulfur autotrophic deep denitrification water inlet main pipe 144 and the sulfur autotrophic deep denitrification water inlet branch pipe 145, is uniformly distributed upwards through the sulfur autotrophic filler 142, fully reacts with the sulfur autotrophic filler 142 to remove total nitrogen, and flows to the water production tank section 15 through the sulfur autotrophic deep denitrification water outlet tank 143. When the sulfur autotrophic filler 142 needs to be washed by water, the switch valve is switched, the water in the water production tank section 15 is uniformly distributed through the water production tank backwashing pipe 152, the water production and backwashing pump 31, the sulfur autotrophic deep denitrification water inlet main pipe 144, the sulfur autotrophic deep denitrification water inlet branch pipe 145, the S-shaped filter brick 141, upwards through the sulfur autotrophic filler 142, the sulfur autotrophic filler 142 is fully cleaned, and the washed wastewater flows back to the sewage inlet through the sulfur autotrophic deep denitrification water outlet tank 143. When the sulfur autotrophic filler 142 needs to be washed by gas, the air blower 21 in the equipment section 16 blows the pressurized air through the sulfur autotrophic deep denitrification gas inlet electric ball valve 146, the sulfur autotrophic deep denitrification water inlet main pipe 144, the sulfur autotrophic deep denitrification water inlet branch pipe 145, the S-shaped filter brick 141, upwards through the sulfur autotrophic filler 142, and the sulfur autotrophic filler 142 is fully cleaned.
[0044] The water in the sulfur autotrophic deep denitrification water outlet tank 143 flows to the water production tank section 15, and when the water in the water production tank section 155 reaches the highest liquid level, the water is discharged through the water production tank overflow pipe 153.
[0045] The water production and backwashing pump 31 mainly sucks the MBR membrane tank water and delivers the water to the sulfur autotrophic deep denitrification section 14. When the MBR membrane assembly 133 needs to be backwashed, the switch valve is switched, the water in the water production tank is sucked and delivered to the MBR membrane assembly 133, the membrane surface sludge is backwashed, the membrane is cleaned, and the water production is restored. Every day, when the water needs to be chemically washed, the hypochlorite sodium in the chemical storage tank 42 is sucked by the chemical pump 41 and delivered to the backwashing pipe, and then delivered to the MBR membrane assembly 133 together with the backwashing water for chemical washing.
[0046] The above is only a preferred embodiment of the present application, and therefore cannot limit the scope of the present application, that is, equivalent changes and modifications made according to the scope of the present application and the content of the specification should still be within the scope of the present application.
Claims
1. An MBR-sulfur autotrophic deep denitrification integrated membrane tank, characterized in that: The application relates to a water production device, which comprises a standard container shell, an air feeding assembly, a water production backwashing assembly, a medicine washing assembly and a PLC automatic control unit. The standard container shell comprises an anoxic pool section, an aerobic pool section, an MBR membrane pool section, a sulfur autotrophic deep denitrification section, a water production pool section and a equipment room section in sequence, the anoxic pool section and the aerobic pool section are separated by a first partition plate, the aerobic pool section and the MBR membrane pool section are separated by a second partition plate, the MBR membrane pool section and the sulfur autotrophic deep denitrification section are separated by a third partition plate, the sulfur autotrophic deep denitrification section and the water production pool section are separated by a fourth partition plate, and the water production pool section and the equipment room section are separated by a fifth partition plate; the first partition plate is provided with a first flow guide pipe for guiding liquid in the inner cavity of the anoxic pool section to the inner cavity of the aerobic pool section; the second partition plate is provided with a second flow guide pipe for guiding liquid in the inner cavity of the aerobic pool section to the inner cavity of the MBR membrane pool section; The anoxic pool section is provided with a water inlet pipe, an anoxic pool vent pipe and an anoxic pool flow inducer. The aerobic pool section is provided with an aerobic pool sludge return pump, an aerobic pool sludge return pipe and an aeration mechanism, the aerobic pool sludge return pump is used for conveying sludge in the aerobic pool section to the anoxic pool section through the aerobic pool sludge return pipe. The MBR membrane pool section is provided with an MBR membrane pool sludge return pump, an MBR membrane pool sludge return pipe and an MBR membrane assembly, the MBR membrane pool sludge return pump is used for returning sludge in the MBR membrane pool section to the aerobic pool section through the MBR membrane pool sludge return pipe. The sulfur autotrophic deep denitrification section is provided with S-shaped filter bricks and sulfur autotrophic fillers which are filled in the inner cavity from bottom to top, a sulfur autotrophic deep denitrification water outlet tank, a sulfur autotrophic deep denitrification water inlet main pipe, a sulfur autotrophic deep denitrification water inlet branch pipe and a sulfur autotrophic deep denitrification air inlet electric ball valve, the sulfur autotrophic deep denitrification water outlet tank is arranged above the sulfur autotrophic fillers and is communicated with the water production pool section, one end of the sulfur autotrophic deep denitrification water inlet main pipe is communicated with the sulfur autotrophic deep denitrification water inlet branch pipe, the sulfur autotrophic deep denitrification water inlet branch pipe is arranged in the S-shaped filter bricks, and the sulfur autotrophic deep denitrification air inlet electric ball valve is communicated with the other end of the sulfur autotrophic deep denitrification water inlet main pipe. The water production pool section is provided with a water production pool vent pipe on the side wall and a water production pool backwashing pipe and a water production pool overflow pipe in the inner cavity. The air feeding assembly comprises a blower and an air main pipe, the air outlet of the blower is communicated with an air hose of the MBR membrane assembly, the aeration mechanism of the aerobic pool section and the sulfur autotrophic deep denitrification air inlet electric ball valve through the air main pipe. The water production backwashing assembly comprises a water production and backwashing pump, one end of the water production and backwashing pump is communicated with a water outlet of the MBR membrane assembly through an MBR membrane pool water production pipe, and the other end is communicated with the inner cavity of the sulfur autotrophic deep denitrification section and the inner cavity of the water production pool section through a switch valve. The medicine washing assembly comprises a medicine adding pump and a medicine storage tank, the medicine storage tank is communicated with the water outlet of the MBR membrane assembly through the medicine adding pump; the water production and backwashing pump, the medicine adding pump, the medicine storage tank and the air blower are arranged in the equipment room section, and the PLC automatic control unit is electrically connected with the water production and backwashing pump, the medicine adding pump, the air blower, the anoxic tank flow pusher, the aerobic tank sludge return pump and the MBR membrane tank sludge return pump.
2. The MBR-sulfur autotrophic advanced denitrification integrated membrane tank according to claim 1, characterized in that: In the anoxic tank section, the water inlet end of the water inlet pipe is arranged at the lower part of the side wall, and the water outlet end is arranged at the upper part of the inner cavity of the anoxic tank section, away from the side of the first partition; the anoxic tank vent pipe is arranged at the lower end of the side wall; and the anoxic tank flow pusher is arranged at the lower part of the inner cavity of the anoxic tank section, away from the side of the first partition.
3. The MBR-sulfur autotrophic advanced denitrification integrated membrane tank according to claim 1, characterized in that: In the aerobic tank section, the aerobic tank sludge return pump is arranged at the lower part of the inner cavity of the aerobic tank section, close to the side of the first partition; and the aeration mechanism is arranged at the lower part of the inner cavity of the aerobic tank section.
4. The MBR-sulfur autotrophic advanced denitrification integrated membrane tank according to claim 1, characterized in that: In the MBR membrane tank section, the MBR membrane tank sludge return pump is arranged at the lower part of the inner cavity of the MBR membrane tank section, close to the side of the second partition.
5. The MBR-sulfur autotrophic advanced denitrification integrated membrane tank according to claim 1, characterized in that: In the water production tank section, the water production tank vent pipe is arranged at the lower part of the side wall of the inner cavity of the water production tank section.