Combined aquaculture tail water treatment system based on MABR

Abstract

The utility model relates to a combined aquaculture tail water treatment system based on an MABR (Membrane Aerated Baffled Reactor), which relates to the technical field of sewage treatment and mainly comprises a water inlet system, an air supply system, an MABR anoxic tank, an aerobic tank, a sedimentation tank, a middle water tank, a filter tank and a clean water tank, water enters the MABR anoxic tank and the aerobic tank in sequence through a water inlet pump in the water inlet system for biochemical treatment, the air supply system supplies an air source to the MABR anoxic tank and the aerobic tank, the water enters the sedimentation tank for sedimentation after being subjected to biochemical treatment, supernate enters the middle water tank, the water is lifted to the filter tank by a lifting pump for filtration, and the filtered water enters the clean water tank. By utilizing efficient denitrification of the MABR and aerobic treatment and filtration of the MBBR, pollutants are fully adsorbed and degraded, the use requirements of the culture circulating water are met, and safe, reliable and low-cost operation of the culture tail water is realized. The water treatment system disclosed by the utility model has the advantages of integration of partial devices, simplicity in maintenance and management, good treatment effect, safety, reliability and the like.

Description

Technical Field

[0001] The utility model discloses a MABR combined aquaculture tail water treatment system, which relates to the technical field of sewage treatment. Background Art

[0002] In order to purify the aquaculture effluent well, treat it without adding carbon source, operate it with low carbon, low energy consumption and low cost, and not bring inconvenience to the aquaculture industry, it is necessary to treat the aquaculture effluent separately, return it to the aquaculture for recycling after the treatment meets the use requirements, and meet the water demand of the aquaculture industry. Utility Model Content

[0003] In view of the above requirements, the utility model provides a MABR combined aquaculture tailwater treatment system, which establishes a separate treatment system for the aquaculture tailwater, uses the MABR anoxic tank and aerobic tank for biochemical treatment, and then passes through the sedimentation tank for filtration treatment and is discharged into the clear water tank to return to the aquaculture pond for recycling, thereby achieving safe, reliable and low-cost operation of the aquaculture tailwater and improving the utilization rate of aquaculture circulating water.

[0004] The utility model is realized by the following technical solutions:

[0005] The MABR combined aquaculture tailwater treatment system is characterized in that it is mainly composed of an inlet system, an air supply system, a MABR anoxic tank, an aerobic tank, a sedimentation tank, an intermediate water tank, a filter tank and a clear water tank. The aquaculture tailwater enters the inlet system and enters the MABR anoxic tank and aerobic tank in sequence through the inlet pump in the inlet system for biochemical treatment. The air supply system supplies the air source to the MABR anoxic tank and aerobic tank. After the biochemical treatment, the water body enters the sedimentation tank for precipitation, and the supernatant enters the intermediate water tank. The water body is lifted to the filter tank for filtration by a lifting pump, and the filtered water enters the clear water tank.

[0006] The water inlet system includes an inlet box, an inlet pump, an inlet pipe and a valve, and the valve adjusts the water supply flow rate of the inlet pump; the air supply system includes air supply equipment, air supply pipelines and valves; the MABR membrane treatment unit is placed in the MABR anoxic tank; the MBBR filler and bottom aerator are placed in the aerobic tank, and the MBBR filler is placed in the screen; the sedimentation tank is provided with an inclined plate area; the filter tank adopts a top-in and bottom-out type, and granular fillers are installed in the filter tank.

[0007] Preferably, the MABR anoxic tank is provided with a MABR treatment unit, which is mainly composed of a MABR membrane assembly and a membrane frame. The MABR membrane assembly includes a membrane shell, an air inlet end, a sealing end and MABR membrane filaments. An air inlet branch pipe and a conversion pipe are arranged at the air inlet end, and a sealing cap is arranged at the sealing end for sealing; connecting ribs are arranged on the top of the membrane frame, and the number of connecting ribs is set according to the number of MABR membrane assemblies.

[0008] Preferably, the number of MABR treatment units in the MABR anoxic tank is one group or more, and the number of MABR membrane modules arranged in each group of MABR treatment units is 6 or more.

[0009] Preferably, there are three or more layers of screens in the aerobic pool.

[0010] Preferably, the number of bottom aerators provided in the aerobic pool is eight or more.

[0011] Preferably, the MABR anoxic tank, aerobic tank, sedimentation tank and intermediate water tank can be arranged as a whole and partitioned by partitions.

[0012] Preferably, the filter pool preferably uses volcanic rock filter material or granular activated carbon filter material.

[0013] The utility model is based on the MABR combined aquaculture tailwater treatment system, which utilizes the efficient denitrification of MABR technology, sets up a MABR anoxic tank, and combines with MBBR aerobic treatment to fully degrade pollutants, and then further adsorbs and degrades pollutants by filtration, so that the water quality reaches the level of aquaculture circulating water, realizes the safe, reliable and low-cost operation of aquaculture tailwater, and improves the utilization rate of aquaculture circulating water. The utility model water treatment system can integrate some devices, has simple maintenance and management, good treatment effect, safety and reliability, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a schematic diagram of the process of the utility model.

[0015] Attached Figure 2 This is a schematic diagram of the structure of the MABR treatment unit of the utility model.

[0016] Attached Figure 3 This is a schematic diagram of the structure of the MABR membrane assembly of the utility model.

[0017] Attached Figure 4 This is a schematic diagram of the membrane fiber structure of the MABR membrane module of the utility model.

[0018] Attached Figure 5 This is a schematic diagram of the connecting rib structure at the top of the membrane frame of the utility model.

[0019] In the figure: 1. water inlet system, 101. water inlet box, 102. water inlet pump, 103. water inlet pipe, 2. air supply system, 201. air supply pipeline, 3. MABR anoxic tank, 301. MABR treatment unit, 3011. connecting ribs, 3012. MABR membrane assembly, 3013. membrane frame, 3014 air inlet branch pipe, 3015. conversion pipe fittings, 3016. membrane shell, 3017. end capping, 3018. capping cap, 3019. MABR membrane filament, 4. aerobic tank, 401. screen, 402. MBBR filler, 5. sedimentation tank, 501. inclined plate area, 6. intermediate water tank, 7. lifting pump, 8. filter tank, 9. clear water tank. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the utility model easy to understand, please refer to Figure 1-Figure 5 , the utility model is further explained below in conjunction with specific implementation methods.

[0021] The MABR combined aquaculture tailwater treatment system is mainly composed of an inlet system 1, an air supply system 2, an MABR anoxic tank 3, an aerobic tank 4, a sedimentation tank 5, an intermediate water tank 6, a filter tank 8 and a clear water tank 9. The aquaculture tailwater enters the inlet system 1, and enters the MABR anoxic tank 3 and the aerobic tank 4 in sequence through the inlet pump 102 in the inlet system 1 for biochemical treatment. The air supply system 2 supplies the air source to the MABR anoxic tank 3 and the aerobic tank 4. After the water body is biochemically treated, it enters the sedimentation tank 5 for sedimentation, and the supernatant enters the intermediate water tank 6. The water body is lifted to the filter tank 8 for filtration by the lifting pump 7, and the filtered water enters the clear water tank 9;

[0022] Among them, the water inlet system 1 includes an inlet box 101, an inlet pump 102, an inlet pipe 103 and a valve, and the valve adjusts the water supply flow rate of the inlet pump 102; the air supply system 2 includes air supply equipment, an air supply pipeline 201 and a valve; an MABR membrane treatment unit 301 is placed in the MABR anoxic tank 3; MBBR filler 402 and a bottom aerator 404 are placed in the aerobic tank 4, and the MBBR filler 402 is placed in the screen 401; an inclined plate area 501 is set in the sedimentation tank 5; the filter tank 8 adopts a top-in and bottom-out type, and granular fillers are installed in the filter tank 8.

[0023] The MABR anoxic pool 3 is provided with a MABR treatment unit 301, which is mainly composed of a MABR membrane assembly 3012 and a membrane frame 3013. The MABR membrane assembly 3012 includes a membrane shell 3016, an air inlet end, a sealing end 3017 and a MABR membrane filament 3019. An air inlet branch pipe 3014 and a conversion pipe 3015 are provided at the air inlet end, and a sealing cap 3018 is provided at the sealing end 3017 for sealing. Connecting ribs 3011 are provided on the top of the membrane frame 3013, and the number of connecting ribs 3011 is set according to the number of MABR membrane assemblies 3012.

[0024] Example 1: A breeding pond with a volume of 2000m 3 , design 1 set of 500m 3 / d tailwater treatment system, 4 groups of MABR treatment units 301 are arranged in the MABR anoxic tank 3, and 30 MABR membrane modules are arranged in each group of MABR treatment units 301; three layers of screens 401 are arranged in the aerobic tank 4; the number of aerators at the bottom of the aerobic tank is 24; the MABR anoxic tank 3, the aerobic tank 4, the sedimentation tank 5 and the intermediate water tank 6 are arranged as a whole, and are divided by partitions; the filter tank 8 uses volcanic rock filter material filler to treat the aquaculture water body, and the treated water body meets the requirements for aquaculture circulating water use.

[0025] The above embodiments are only for explaining the technical concept and features of the utility model, and their purpose is to enable ordinary technicians in the field to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and concept of the utility model within the technical scope of the utility model, which should be covered by the protection scope of the utility model.

Claims

1. A MABR-based aquaculture tailwater treatment system, characterized by: It is mainly composed of water inlet system, air supply system, MABR anoxic tank, aerobic tank, sedimentation tank, intermediate water tank, filter tank and clear water tank. The aquaculture tail water enters the water inlet system, and enters the MABR anoxic tank and aerobic tank in turn for biochemical treatment through the water inlet pump in the water inlet system. The air supply system supplies the air source to the MABR anoxic tank and aerobic tank. After biochemical treatment, the water enters the sedimentation tank for sedimentation. The supernatant enters the intermediate water tank, and the water is lifted to the filter tank for filtration by the lifting pump. The filtered water enters the clear water tank. The water inlet system includes an inlet box, an inlet pump, an inlet pipe and a valve, and the valve adjusts the water supply flow rate of the inlet pump; the air supply system includes air supply equipment, air supply pipelines and valves; the MABR membrane treatment unit is placed in the MABR anoxic tank; the MBBR filler and bottom aerator are placed in the aerobic tank, and the MBBR filler is placed in the screen; the sedimentation tank is provided with an inclined plate area; the filter tank adopts a top-in and bottom-out type, and granular fillers are installed in the filter tank.

2. The MABR combined aquaculture tailwater treatment system according to claim 1 is characterized in that: The MABR anoxic tank is provided with a MABR treatment unit, which is mainly composed of a MABR membrane assembly and a membrane frame. The MABR membrane assembly includes a membrane shell, an air inlet end, a sealing end and MABR membrane filaments. An air inlet branch pipe and a conversion pipe fitting are arranged at the air inlet end, and a sealing cap is arranged at the sealing end for sealing. Connecting ribs are arranged on the top of the membrane frame, and the number of the connecting ribs is set according to the number of MABR membrane assemblies.

3. The MABR combined aquaculture tailwater treatment system according to claim 1 is characterized in that: The number of MABR treatment units in the MABR anoxic tank is one group or more, and the number of MABR membrane modules arranged in each group of MABR treatment units is 6 or more.

4. The MABR-based aquaculture tailwater treatment system according to claim 1, characterized in that: The aerobic pool has three or more layers of screens.

5. The MABR combined aquaculture tailwater treatment system according to claim 1 is characterized in that: The number of bottom aerators arranged in the aerobic pool is eight or more.

6. The MABR combined aquaculture tailwater treatment system according to claim 1 is characterized in that: The MABR anoxic tank, aerobic tank, sedimentation tank and intermediate water tank can be set as a whole and partitioned by partitions.

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