A mabr aquaculture water treatment device

Abstract

The utility model discloses a kind of MABR aquaculture water treatment devices, it is related to sewage treatment technical field, mainly by mainly by box, MABR membrane box, water inlet pipe, water outlet, overflow pipe is formed, water inlet pipe is respectively arranged at box four corners, upper portion of side surface is provided with water outlet, MABR membrane box is installed in box, overflow port is arranged on the outside of box, overflow port is connected with overflow pipe outside box. Device is installed in the drainage area of aquaculture pond or pond body, adopt semi-ground semi-underground type, make full use of MABR membrane unique from inside to outside form aerobic / anoxic / anaerobic microbial membrane structure, realize synchronous carbon removal denitrification, and synchronous nitrification denitrification in same reactor, high-efficiency removal of pollutants. The device has the advantages of small floor area, easy operation, good removal effect, low running cost etc.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, specifically relating to a MABR aquaculture water treatment device. Background Technology

[0002] With the booming development of aquaculture, the continuous expansion of farming scale and the sustained increase in farming density, the treatment of aquaculture recirculating water and wastewater has become increasingly prominent, becoming a key bottleneck restricting the healthy and sustainable development of the industry. Under high-density farming models, nitrogenous waste such as ammonia nitrogen and nitrite produced by the metabolism of aquatic organisms such as fish and shrimp accumulates continuously in the aquaculture water. The decomposition of uneaten feed and excrement further exacerbates the pollution load on the water, leading to water quality deterioration. Traditional aquaculture water treatment technologies, such as physical filtration, chemical flocculation, and biological oxidation, while able to purify water to some extent, also have many limitations. Physical filtration mainly removes suspended particulate matter from the water, but its effect on dissolved pollutants is minimal; chemical flocculation can quickly reduce water turbidity, but the use of chemical agents can easily cause secondary pollution, and long-term use may have potential toxic effects on farmed organisms; biological oxidation technology has high requirements for equipment and operating conditions, and its treatment effect is difficult to guarantee in the event of water quality fluctuations or sudden pollution, and the long start-up time of traditional biological treatment processes makes it difficult to meet the urgent need for real-time water quality control during aquaculture production. Therefore, the efficient removal of aquaculture recirculating water and effluent is urgently needed.

[0003] Membrane-Aerated Biofilm Reactor (MABR), as a novel wastewater treatment technology, combines traditional biofilm methods with membrane separation technology. It uses hollow fiber membranes to provide a carrier for the biofilm and diffuses oxygen into the biofilm, forming a unique aerobic / anoxic / anaerobic microbial membrane structure from the inside out. This provides a suitable environment for the growth of different microorganisms such as nitrifying and denitrifying bacteria, achieving simultaneous carbon and nitrogen removal and reducing operating costs. Currently, MABR technology has been gradually applied in experimental research and pilot-scale field trials of aquaculture wastewater. Existing MABR equipment requires a bypass system and a separate treatment system, with the treated aquaculture water being returned to the aquaculture area. While this system has good treatment effects, it requires separate space for the treatment area, and the aquaculture wastewater needs to be pumped to the treatment area, increasing land occupation and energy consumption. Based on this background, this invention proposes a MABR aquaculture wastewater treatment device. The tank is installed within the aquaculture area, using a semi-underground, semi-above-ground design, without increasing land occupation and reducing operating energy consumption. This application aims to improve aquaculture wastewater treatment while reducing energy consumption, achieving an economical, efficient, and stable new solution for aquaculture wastewater treatment. Utility Model Content

[0004] In summary, this utility model provides a MABR aquaculture water treatment device that fully utilizes MABR technology to achieve efficient carbon and nitrogen removal, simultaneous nitrification and denitrification within the same reactor, effectively removing pollutants. At the same time, the MABR treatment device is installed in the aquaculture area in a semi-underground, semi-above-ground manner, without increasing the land area, thus achieving effective removal of nitrogen pollutants from the aquaculture recirculating water system while saving energy.

[0005] This utility model is achieved through the following technical solution:

[0006] The MABR aquaculture water treatment device is characterized by the following: it mainly consists of a tank, a MABR membrane tank, an inlet pipe, an outlet, and an overflow pipe. Inlet pipes are installed at the four corners of the tank, and an outlet is located on the upper side. The MABR membrane tank is installed inside the tank, and an overflow outlet is located on the outside of the tank, connected to an overflow pipe outside the tank. The lower part of the tank is buried underground, and a balancing hole is provided on the side of the tank. The inlet pipe has an opening at the top and extends to the bottom of the tank.

[0007] Furthermore, the MABR membrane box mainly consists of MABR membrane modules, membrane frame, gas supply connection pipe, and gas supply branch pipe connection port. The gas supply branch pipe connection port is located at one end of the upper part of the membrane frame and is connected to an external gas supply device through a gas supply main pipe. There is one or more MABR membrane boxes, and the number of MABR membrane modules in each MABR membrane box is 12 to 60.

[0008] Furthermore, the dimensions of the MABR enclosure are 1.0~2.5m in length, 0.8~1.5m in width, and 1.35~2.5m in height.

[0009] Furthermore, the number of water inlet pipes is 4, and the size of the water inlet pipes is DN100~DN250.

[0010] Furthermore, the water inlet pipe extends to the bottom of the tank, and the extension length of each water inlet pipe to the bottom of the tank does not exceed 2 / 5 of the tank length.

[0011] Furthermore, the number of water outlets is one, the size of the water outlet is DN100~DN250, and the highest position of the water outlet is lower than the lowest position of the overflow outlet.

[0012] Furthermore, the number of overflow ports is 4, and the overflow ports are connected to the overflow pipes by flanges. The diameter of the overflow ports and overflow pipes is DN100~DN250.

[0013] Furthermore, the liquid level at the outlet of the overflow pipe is below the liquid level in the aquaculture pond.

[0014] Furthermore, the number of the balance holes on each side is one or more, and they are arranged in the part below 1 / 2 of the height direction of the box.

[0015] Furthermore, the device is placed in the drainage area of ​​the aquaculture pond.

[0016] This utility model discloses a MABR aquaculture water treatment device, installed in the drainage area of ​​aquaculture ponds or pools. It adopts a semi-above-ground, semi-underground design, fully utilizing the unique aerobic / anoxic / anaerobic microbial membrane structure formed from the inside out of the MABR membrane to achieve simultaneous carbon and nitrogen removal, as well as simultaneous nitrification and denitrification within the same reactor, resulting in highly efficient removal of pollutants. This device has advantages such as small footprint, convenient operation, good removal effect, and low operating cost. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the elevation structure of this utility model.

[0018] Appendix Figure 2 This is a top view of the structure of this utility model.

[0019] Appendix Figure 3 This is a schematic diagram of the elevation structure of the MABR membrane box of this utility model.

[0020] In the diagram: 1. Overflow port, 2. Box body, 3. Water outlet, 4. Water inlet pipe, 5. Overflow pipe, 6. MABR membrane box, 7. MABR membrane module, 8. Balance hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, please refer to... Figure 1-3 The present invention will be further described below with reference to specific embodiments.

[0022] The MABR aquaculture water treatment device mainly consists of a tank 2, a MABR membrane tank 6, an inlet pipe 4, an outlet 3, and an overflow pipe 5. The inlet pipe 4 is installed at the four corners of the tank 2, and the outlet 3 is installed on the upper side. The MABR membrane tank 6 is installed inside the tank 2. An overflow port 1 is installed on the outside of the tank 2 and is connected to the overflow pipe 5 outside the tank 2. The lower part of the tank 2 is buried underground, and a balance hole 8 is installed on the side of the tank 2. The inlet pipe 4 is open at the top and extends to the bottom of the tank 2. The MABR membrane tank 6 mainly consists of MABR membrane modules, membrane frame, air supply connection pipe, and air supply branch pipe connection port. The air supply branch pipe connection port is located at one end of the upper part of the membrane frame and is connected to the external air supply equipment through the air supply main pipe.

[0023] Example 1: The aquaculture pond has a volume of 300m³. 3 Install one MABR aquaculture water treatment unit with a treatment capacity of 150m³. 3 / d, HRT is 2d. The dimensions of the tank 2 are set as follows: length 1.7m, width 1.2m, height 2.3m. One MABR membrane tank 6 is set inside the tank 2. The MABR membrane tank 6 contains 60 MABR membrane modules connected as a whole by air supply connection pipes. The tank 2 is equipped with four DN100 water inlet pipes 4. The aquaculture water is pumped from the aquaculture water body into the water inlet pipes 4 through a submersible pump. The water inlet pipes 4 are arranged from top to bottom and extend from bottom to bottom inside the tank 2, with an extension length of 0.6m (not exceeding 2 / 5 of the tank length). One DN100 outlet 3 is set. Four DN100 overflow ports 1 are set. The overflow ports 1 are connected to the overflow pipes 5 by flanges, and the highest position of the outlet 3 is lower than the lowest position of the overflow port 1. The liquid level at the end of the overflow pipe 5 is below the liquid level of the aquaculture tank. To ensure the safety of the installation and use of the tank 2, two balance holes 8 are set on each side below 1 / 2 of the height of the tank 2. The entire device is placed in the drainage area of ​​the aquaculture tank. The air supply equipment includes a blower, a main air supply pipe, and control valves. The blower is installed on the ground near the aquaculture pond. The main air supply pipe is connected to the air supply branch pipe of the MABR membrane box 6 through a metal hose. The air supply pressure and duration are controlled and adjusted by the valves.

[0024] During implementation, the water in the tank 2 can be returned to the aquaculture pond after treatment through the outlet 3 or the overflow pipe 5. Depending on the amount of water treated, the aquaculture pond can be circulated once every two days, which improves the recycling rate of aquaculture water. The device has a small footprint, and multiple treatment devices can be used in parallel when the amount of water treated is increased.

[0025] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope of this utility model, based on its technical solution and concept, should be included within the scope of protection of this utility model.

Claims

1. A MABR aquaculture water treatment device, characterized by: It mainly consists of a housing, a MABR membrane tank, an inlet pipe, an outlet pipe, and an overflow pipe. The inlet pipe is installed at each of the four corners of the housing, and the outlet pipe is installed on the upper side. The MABR membrane tank is installed inside the housing, and the overflow port is installed on the outside of the housing and connected to the overflow pipe outside the housing. The lower part of the housing is buried underground, and the side of the housing is provided with a balance hole. The inlet pipe is open at the top and extends to the bottom of the housing.

2. The MABR aquaculture water treatment device according to claim 1, characterized in that: The MABR membrane box mainly consists of MABR membrane modules, membrane frame, gas supply connection pipe, and gas supply branch pipe connection port. The gas supply branch pipe connection port is located at one end of the upper part of the membrane frame and is connected to the external gas supply equipment through the gas supply main pipe. There is one or more MABR membrane boxes, and the number of MABR membrane modules in each MABR membrane box is 12 to 60.

3. The MABR aquaculture water treatment device of claim 1, wherein: The dimensions of the MABR enclosure are 1.0~2.5m in length, 0.8~1.5m in width, and 1.35~2.5m in height.

4. The MABR aquaculture water treatment device of claim 1, wherein: The number of water inlet pipes is 4, and the size of the water inlet pipes is DN100~DN250; the water inlet pipes extend to the bottom of the tank, and the extension length of each water inlet pipe to the bottom of the tank does not exceed 2 / 5 of the length of the tank.

5. The MABR aquaculture water treatment device of claim 1, wherein: The number of water outlets is 1, the size of which is DN100~DN250, and the highest position of the water outlet is lower than the lowest position of the overflow outlet.

6. The MABR aquaculture water treatment device of claim 1, wherein: The number of overflow ports is 4, and the overflow ports are connected to the overflow pipes by flanges. The diameter of the overflow ports and overflow pipes is DN100~DN250.

7. The MABR aquaculture water treatment device of claim 1, wherein: The liquid level at the outlet of the overflow pipe is below the liquid level in the aquaculture pond.

8. The MABR aquaculture water treatment device of claim 1, wherein: The number of balance holes on each side is one or more, and they are arranged in the part below 1 / 2 of the height direction of the box.

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