CN103548751A - Energy-saving air-lift recirculating aquaculture fish pond system - Google Patents

Abstract

The invention relates to an energy-saving air-lift circulating water aquaculture fish pond system, which belongs to the technical field of aquaculture equipment. A circle or a section of sewage treatment pool is arranged around the fish pond. Filter tank, biological purification tank, disinfection tank and air lift tank; the water in the fish pond enters the filter tank through the drain pipe, and overflows into the fine filter tank after sedimentation and filtration. After being filtered by the fine filter tank, the water enters the biological purification tank from the bottom Middle; After removing harmful substances such as ammonia nitrogen in the water by biodegradation, the water overflows into the filter disinfection tank, and the sterilized water is oxygenated by the air stripping device and then flows back into the fish pond. The energy-saving air-lift circulating water aquaculture fish pond system occupies less land, has a compact structure, and has an integrated layout, which improves the scale and efficiency of aquaculture, has small investment, simple equipment, low aquaculture cost, and very good water treatment effect, which is beneficial to the system. promotional use.

Description

An energy-saving air-lift circulating water aquaculture fish pond system

technical field

The invention relates to an energy-saving air-lift circulating water culture fish pond system, which belongs to the technical field of aquaculture equipment.

Background technique

my country is a large aquaculture country and an important supplier of aquatic products in the world. However, the traditional extensive aquaculture method using scale expansion is currently facing enormous pressure from the environment, policy, society and other aspects. Therefore, it is of positive significance to widely promote the water-saving, land-saving and environment-friendly recirculating aquaculture system. At this stage, the recirculating aquaculture system can be roughly divided into two technical routes with obvious differences. One is the highly integrated recirculating aquaculture model, which mainly obtains good water quality through various water treatment equipment and reduces personnel through automated facilities. The labor intensity is low, and the system operation status is fed back in real time through a high-precision water quality monitoring system. However, this highly integrated recirculating aquaculture mode requires high investment and operating costs, which greatly increases the cost of aquaculture and hinders popularization; the second is an economical recirculating aquaculture mode, mainly to simplify water treatment equipment and adopt simple The processing method obtains higher economic benefits. However, this economical recirculating aquaculture mode consumes a lot of energy, such as power supply, water source, etc., and the efficiency is low, and the water treatment effect is not very good.

Therefore, the research and application of economical recirculating aquaculture mode has become a new research hotspot at present. It is desired to combine recirculating aquaculture technology with engineering ecological purification technology, improve the water treatment process, and ensure the water treatment effect. Streamline water treatment equipment to make up for the lack of economical recirculating aquaculture mode.

Contents of the invention

The technical problem solved by the present invention is: to provide a configuration structure of a circulating water aquaculture fish pond system, to overcome the large energy consumption, high cost, poor water treatment effect and the ratio of the breeding water surface area to the water treatment water surface area in the circulating aquaculture system low problem.

The purpose of the present invention is achieved by the following technical solutions.

An energy-saving airlift type circulating water aquaculture fish pond system is characterized in that:

A circle or a section of blowdown treatment ponds are set at the periphery of the fish pond 1, and the blowdown treatment ponds are successively sedimentation ponds 4, fine filtration ponds 5, biological purification ponds 8, disinfection ponds 11 and air stripping ponds 16 from front to back;

The height of the pool wall between the sedimentation tank 4 and the fine filter tank 5 is lower than the water level of the fish pond 1;

There is a gap at the bottom of the pool wall between the fine filter pool 5 and the biological purification pool 8;

The height of the wall between the biological purification pool 8 and the disinfection pool 11 is lower than the water level of the fish pond 1;

There is a gap at the bottom of the pool wall between the disinfection pool 11 and the air stripping pool 16;

The drain at the bottom of the fish pond 1 is connected to the bottom of the sedimentation tank 4 through the drain pipe 2, and the end of the drain pipe 2 is connected to the vertical intubation pipe 7, and the outlet height of the intubation pipe 7 is lower than the water level of the fish pond 1. The outer periphery of the intubation tube 7 is sleeved with a circular tube type draft tube 3 to form a vertical flow settler;

A three-dimensional mesh filler 6 is arranged in the fine filter pool 5;

The oxygen-increasing aeration pipe 15 is set at the bottom of the biological purification tank 8, and the three-dimensional elastic filler 12 is configured on the oxygen-increasing aeration pipe 15 top;

An ultraviolet sterilizing device 14 and a filter cotton 13 are arranged from bottom to top above the wall gap of the disinfection pool 11;

An air lift device 10 and a low-lift water pump 9 are arranged in the air lift tank 16, and the outlet leads into the fish pond 1.

Wherein, the width of the gap at the bottom of the pool wall between the fine filter pool 5 and the biological purification pool 8 is 0.2-0.3 meters.

Wherein, the bottom of the fine filter tank 5 is provided with a grid support, and the three-dimensional mesh filler 6 is placed in the grid support.

Wherein, the material of the three-dimensional mesh filler 6 in the fine filter tank 5 is polypropylene.

Wherein, the filter cotton 13 is one or a combination of synthetic fiber filter cotton, non-woven fabric filter cotton, glass fiber filter cotton, and activated carbon filter cotton.

Wherein, the three-dimensional elastic filler 12 is suspended in the biological purification tank 8, and the three-dimensional elastic filler is composed of a central rope and a thread, and the length of the thread is 20-25cm.

Wherein, the width of the gap at the bottom of the pool wall between the disinfection pool 11 and the air stripping pool 16 is 0.2-0.3 meters.

Wherein, the bottoms of the fish pond 1, the sedimentation pond 4, the fine filtration pond 5, the biological purification pond 8, the disinfection pond 11 and the air stripping pond 16 are all provided with sewage outlets.

Wherein, the height of the upper opening of the draft pipe 3 constituting the vertical flow settler is lower than the water level of the fish pond 1 .

The water in the fish pond 1 enters the filter tank 4 through the drain pipe 2, and overflows into the fine filter tank 5 after sedimentation and filtration. After further filtering through the fine filter tank 5, the water enters the biological purification tank 8 from the bottom, and passes After the harmful substances such as ammonia nitrogen in the water are removed by biodegradation, the water overflows into the disinfection pool 11, and the sterilized water enters the air stripping pool 16 from the bottom of the disinfection pool 11, and finally the treated water flows back through the air stripping device to increase oxygen. To the fish pond 1, so as to realize the circulation, filter, disinfection and other treatment steps of the whole water treatment system, and the water treatment effect is good.

The beneficial effects of the present invention are:

1. The energy-saving air-lift circulating water aquaculture fish pond system occupies less land, has a compact structure and an integrated layout, which improves the scale and efficiency of aquaculture, and also effectively increases the ratio of the aquaculture water surface area to the water treatment water surface area.

2. The energy-saving air-lift circulating water aquaculture fishpond system has small investment, simple equipment, and low aquaculture cost, which is conducive to the popularization and use of the system.

3. The bottom of each unit of the sewage treatment tank of the energy-saving air-lift circulating water aquaculture fish pond system is equipped with sewage outlets, which can discharge sewage independently, so solid matter can be collected through regular and centralized sewage discharge methods. Reuse can not only reduce environmental pollution but also save costs.

4. Adopting this circulating water aquaculture fish pond system, the water in the fish pond is treated through steps such as sedimentation, filtration, biological purification and disinfection. The water treatment effect is good, and it is economical and environmentally friendly.

5. Between the various functional pools, use the height difference of the pool wall lower than the water level of the fish pond, and use the pressure difference characteristics of the gap water at the bottom of the pool wall to flow naturally one after another, eliminating the need for power transmission at all levels and saving energy. For this reason, the front and rear positions of each functional pool are uniquely set, which has obvious novelty and creativity.

Description of drawings

Fig. 1 is a schematic plan view of the overall structure of the energy-saving air-lift circulating water aquaculture fish pond system of the present invention.

Fig. 2 is a schematic view of the internal structure of the sewage treatment pond arranged around the fish pond, viewed from the horizontal direction.

Fig. 3 is a process flow diagram of the energy-saving air-lift circulating water aquaculture fish pond system of the present invention.

1 is the fish pond, 2 is the drainage pipe, 3 is the diversion pipe, 4 is the sedimentation tank, 5 is the fine filter tank, 6 is the three-dimensional mesh packing, 7 is the intubation tube, 8 is the biological purification tank, 9 is the low-lift water pump, 10 is an air lift device, 11 is a disinfection tank, 12 is a three-dimensional elastic filler, 13 is a filter cotton, 14 is an ultraviolet sterilizing device, 15 is an aeration tube for increasing oxygen, and 16 is an air lift tank.

Detailed ways

The present invention will be further described below in conjunction with specific examples.

As shown in Fig. 1, Fig. 2 and Fig. 3, a section of sewage treatment pool is set in the periphery of fish pond 1, and described sewage treatment pool is successively sedimentation pond 4, fine filter pond 5, biological purification pond 8, disinfection pond 11 from front to back and stripping pool 16.

The height of the wall between the sedimentation tank 4 and the fine filter tank 5 is lower than the water level of the fish pond 1; the center of the bottom of the fish pond 1 is provided with a drain, and the drain is connected to the bottom of the sedimentation tank 4 by the drain pipe 2, The end of drainpipe 2 is connected with vertical intubation pipe 7, and the outlet height of intubation pipe 7 is lower than the water level height in the fishpond 1, and the periphery of intubation pipe 7 is nested with circular tube type draft tube 3 to form a vertical flow settler. Preferably, the height of the upper opening of the draft pipe 3 constituting the vertical flow settler is lower than the water level of the fish pond 1 . When the water in the fish pond 1 is discharged into the sedimentation tank 4 from the drain pipe 2, the large particles in the water settle to the bottom in the sedimentation tank 4, and the bottom of the sedimentation tank 4 is provided with a sewage outlet, which can be discharged regularly through the sewage outlet. The water after sedimentation and filtration overflows into the fine filter tank 5 .

There is a gap at the bottom of the pool wall between the fine filter pool 5 and the biological purification pool 8, and the width of the gap is 0.2-0.3 meters. The finely filtered water enters the biological purification pool 8 from the bottom. A grid support is provided at the bottom of the fine filter tank 5, and a three-dimensional mesh filler 6 made of polypropylene is placed in the grid support to trap tiny particles and carry out preliminary biological purification. There is a sewage outlet at the bottom of the fine filter tank, and the dirt in the pool can be discharged out through the sewage outlet.

The height of the wall between the biological purification tank 8 and the disinfection tank 11 is lower than the water level of the fish pond 1; the oxygen-increasing aeration tube 15 is set at the bottom of the biological purification tank 8, and a three-dimensional aeration tube 15 top is configured Elastic filler 12, the three-dimensional elastic filler 12 is suspended on the top of the biological purification tank 8, the three-dimensional elastic filler is made up of a central rope and a thread, and the length of the thread is 20cm. Harmful substances such as ammonia nitrogen in the water can be effectively removed through biodegradation, and the water after biological purification and oxygenation overflows into the disinfection pool 11 .

The width of the gap at the bottom of the pool wall between the disinfection pool 11 and the air stripping pool 16 is 0.2-0.3 meters, and the sterilized and filtered water enters the air stripping pool 16 from the bottom. Above the pool wall gap of the disinfection pool 11, an ultraviolet sterilizing device 14 and a filter cotton 13 are arranged from bottom to top. One or a combination of several can further filter and sterilize the water, fully meeting the water quality requirements required by the fish raised in the fish pond 1. The bottom of the disinfection pool 11 is separately provided with a sewage outlet for the discharge of filtrates.

An air lift device 10 and a low-lift water pump 9 are arranged in the air lift tank 16, and the outlet leads into the fish pond 1. The water in the air stripping pool 16 enters the fish pond 1 after passing through the air stripping device, which can realize the circulation of the whole water treatment system and effectively save energy. If centralized sewage discharge is required, the low-lift water pump 9 can be turned on to increase the water circulation volume and improve the water treatment capacity. There is also a sewage outlet at the bottom of the air stripping tank, which can discharge the sewage in the tank.

The above-mentioned energy-saving air-lift circulating water aquaculture fish pond system adopts an integrated layout and a compact structure, making full use of the workshop plane space to increase the ratio of the breeding water surface area to the water treatment water surface area; the air lift method is used to realize water circulation, which effectively saves energy and forms A new breeding system that is energy-saving, high-efficiency, low-cost, and easy to popularize and apply.

Claims (9)

1. An energy-saving air-lift type circulating water aquaculture fishpond system is characterized in that: A circle or a section of sewage treatment pools are set around the fish pond (1), and the sewage treatment pools are successively sedimentation ponds (4), fine filter ponds (5), biological purification ponds (8), and disinfection ponds (11) from front to back. ) and stripping tank (16); The height of the wall between the sedimentation tank (4) and the fine filter tank (5) is lower than the water level of the fish pond (1); There is a gap at the bottom of the pool wall between the fine filter tank (5) and the biological purification tank (8); The height of the wall between the biological purification tank (8) and the disinfection tank (11) is lower than the water level of the fish pond (1); There is a gap at the bottom of the pool wall between the disinfection pool (11) and the air stripping pool (16); The outlet at the center of the bottom of the fish pond (1) is connected to the bottom of the sedimentation tank (4) through the drain pipe (2), and the end of the drain pipe (2) is connected to a vertical intubation pipe (7), and the intubation pipe (7) ) outlet height is lower than the water level of the fish pond (1), and the outer periphery of the intubation pipe (7) is sleeved with a circular tube type draft tube (3) to form a vertical flow settler; A three-dimensional mesh filler (6) is arranged in the fine filter tank (5); The oxygen-increasing aeration pipe (15) is set at the bottom of the biological purification tank (8), and the three-dimensional elastic filler (12) is configured on the top of the aeration-increasing aeration pipe (15); An ultraviolet sterilizing device (14) and filter cotton (13) are arranged from bottom to top above the pool wall gap of the disinfection pool (11); An air stripping device (10) and a low-lift water pump (9) are arranged in the air stripping pool (16), and the outlet leads into the fish pond (1). 2. according to the described energy-saving air-lift type circulating water aquaculture fish pond system of claim 1, it is characterized in that: the gap width at the bottom of the pool wall between the fine filter tank (5) and the biological purification tank (8) is 0.2- 0.3 meters. 3. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1, characterized in that: the bottom of the fine filter tank (5) is provided with a grid support, and the three-dimensional mesh filler (6) is placed within the grill bracket. 4. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1 or 3, characterized in that: the three-dimensional mesh filler (6) in the fine filter tank (5) is made of polypropylene. 5. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1, characterized in that: the filter cotton (13) is a synthetic fiber filter cotton, a non-woven fabric filter cotton, a glass fiber filter cotton, or an activated carbon filter. One or a combination of cotton. 6. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1, characterized in that: the three-dimensional elastic filler (12) is suspended in the biological purification tank (8), and the three-dimensional elastic filler is composed of a central rope and Composed of silk strips, the length of the silk strips is 20-25cm. 7. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1, characterized in that: the width of the gap at the bottom of the pool wall between the disinfection pool (11) and the air-lift pool (16) is 0.2 -0.3 meters. 8. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1, characterized in that: the fish pond (1), the sedimentation pond (4), the fine filter pond (5), and the biological purification pond (8) , the bottom of the disinfection tank (11) and the air lift tank (16) are all provided with sewage outlets. 9. The energy-saving air-lift circulating water aquaculture fish pond system according to claim 1, characterized in that: the height of the upper mouth of the diversion pipe (3) constituting the vertical flow settler is lower than the water level of the fish pond (1) .

Images