Fresh water pond culture tail water treatment system

Abstract

The utility model discloses a freshwater pond culture tail water treatment system which comprises ecological ditches arranged among culture ponds, and a sedimentation tank, a filter dam I, an aeration tank, a filter dam II and an ecological purification tank which are sequentially connected with one side of each ecological ditch, tail water is primarily purified through the ecological ditch, suspended solids and other substances in the water body are precipitated through the sedimentation tank, the suspended solids in the water are further removed through the first filter dam and the second filter dam, aeration equipment in the aeration tank is used for increasing dissolved oxygen in the water body and accelerating decomposition of organic matter in the water body, and nitrogen and phosphorus nutritive salt in the water body is absorbed through the ecological purification tank. The freshwater pond culture tail water treatment system is simple in structure, reasonable in design, reasonable in layout, high in tail water treatment efficiency and good in treatment effect, the area of the freshwater pond culture tail water treatment system accounts for more than 10% of the total aquaculture area, new technologies and new processes such as physical and biological purification treatment are applied to the whole system, construction of a pond circulation treatment system is accelerated, and the cost is reduced. The aquaculture tail water resource utilization or up-to-standard discharge is promoted, and the healthy and green development of the aquaculture industry is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of tail water treatment, in particular to a freshwater pond aquaculture tail water treatment system. Background Art

[0002] The treatment of tailwater from pond aquaculture will affect the operation effect of tailwater treatment facilities due to the different aquaculture species and changes in production management modes in different regions. At present, the technical modes of aquaculture tailwater treatment such as pond bottom discharge are widely used, which integrates physical, chemical, biological and other technical integrations to mature and improve. The existing tailwater treatment layout is unreasonable, and the construction requirements of aquaculture tailwater treatment technical facilities such as pond bottom discharge are not up to standard. Therefore, a freshwater pond aquaculture tailwater treatment system is designed to meet the use needs, and it meets the requirements of utility models after retrieval. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides a freshwater pond aquaculture tail water treatment system.

[0004] A freshwater pond aquaculture tailwater treatment system comprises an ecological ditch arranged between each aquaculture pond, and a sedimentation tank, a filter dam 1, an aeration tank, a filter dam 2, and an ecological purification tank are sequentially connected to one side of the ecological ditch. The tailwater is preliminarily purified by the ecological ditch, the sedimentation tank precipitates suspended matter and other substances in the water body, the filter dam 1 and the filter dam 2 further remove the suspended matter in the water, the aeration equipment in the aeration tank is used to increase the dissolved oxygen in the water body, accelerate the decomposition of organic matter in the water body, and the ecological purification tank absorbs nitrogen and phosphorus nutrients in the water body.

[0005] Furthermore, aquatic plants are planted in the ecological ditch, and a drainage pipeline with a valve is provided between the ecological ditch and the breeding pond.

[0006] Furthermore, a sluice is provided between the ecological ditch and the sedimentation tank.

[0007] Furthermore, the water depth of the sedimentation tank is 1.5-3m, and water retaining facilities are provided in the tank.

[0008] Furthermore, the filter dam 1 and the filter dam 2 have the same structure, the filter dam 1 uses hollow bricks to construct the dam body, and the middle of the dam body is filled with filter material.

[0009] Furthermore, an aeration plate, an aeration pipe, and an aerator are arranged in the aeration tank, and biological fillers are arranged vertically along the water flow in the aeration tank.

[0010] Furthermore, aquatic plants are planted or ecological floating beds are placed in the ecological purification pool, and aquatic animals are cultured.

[0011] Furthermore, the ecological floating bed includes a plate body, a plurality of planting tubes are evenly inserted on the plate body, a circle of floats is fixedly connected to the edge of the bottom plate of the plate body, and a limit rod is symmetrically slidably inserted on the plate body in the horizontal direction.

[0012] Furthermore, a water pump is connected to one side of the ecological purification pool, and the other end of the water pump is connected to a second drainage pipeline, through which the treated water is discharged into a breeding pond or an external ditch.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a simple structure and a reasonable design. The freshwater pond aquaculture tailwater treatment system accounts for more than 10% of the total aquaculture area, has a reasonable layout, high tailwater treatment efficiency, and good treatment effect. The entire system applies new technologies and processes such as physical and biological purification treatment to accelerate the construction of pond circulation treatment systems, promote the resource utilization of aquaculture tailwater or discharge in compliance with standards, and help the healthy and green development of the aquaculture industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 A schematic structural diagram of an ecological floating bed in the utility model.

[0016] In the figure: ecological ditch 1, drainage pipeline 11, valve 111, sluice gate 12, sedimentation tank 2, filter dam 13, aeration tank 4, filter dam 2 5, ecological purification tank 6, ecological floating bed 7, plate 71, planting tube 72, float 73, limit rod 74, water pump 8, drainage pipeline 2 81, and breeding pond 9. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Reference Figure 1 —2, a freshwater pond aquaculture tailwater treatment system, comprising an ecological ditch 1 arranged between each aquaculture pond 9, aquatic plants are planted in the ecological ditch 1, tailwater is preliminarily purified through the ecological ditch 1, and a drainage pipeline 11 with a valve 111 is arranged between the ecological ditch 1 and the aquaculture pond 9. A sedimentation tank 2, a filter dam 13, an aeration tank 4, a filter dam 25, and an ecological purification tank 6 are sequentially connected to one side of the ecological ditch 1.

[0019] A sluice gate 12 is provided between the ecological ditch 1 and the sedimentation tank 2. The sedimentation tank 2 has a water depth of 1.5-3m and is provided with a water retaining facility. The aquaculture tail water after preliminary purification is collected in the sedimentation tank 2. The suspended matter and other substances in the water body are precipitated by sedimentation and the water retaining facility in the sedimentation tank 2. The filter dam 1 3 and the filter dam 2 5 have the same structure. A fine mesh retaining net is provided in front of the filter dam 1 3 and the filter dam 2 5 to isolate floating objects. The filter dam 1 3 is constructed of hollow bricks, and the middle of the dam body is filled with filter material. The filter dam 1 3 and the filter dam 2 5 further remove suspended matter in the water. The aeration tank 4 is provided with an aeration plate, an aeration pipe, and an aerator, and biological fillers are arranged vertically along the water flow in the aeration tank 4. The aeration equipment in the aeration tank 4 is used to increase the dissolved oxygen in the water body and accelerate the decomposition of organic matter in the water body.

[0020] The ecological purification pool 6 absorbs nitrogen and phosphorus nutrients from the water body, and aquatic plants are planted or ecological floating beds 7 are placed in the ecological purification pool 6, and aquatic animals are cultured, and microbial preparations such as Bacillus and photosynthetic bacteria are regularly added to accelerate the decomposition of organic matter in the water body. A water pump 8 is connected to one side of the ecological purification pool 6, and a drainage pipeline 81 is connected to the other end of the water pump 8, and the treated water is discharged into the breeding pond 9 or an external ditch through the drainage pipeline 81.

[0021] The ecological floating bed 7 includes a plate body 71, on which a number of planting tubes 72 are evenly inserted, the bottom ends of the planting tubes 72 are blocked, and a number of water inlet holes are evenly opened at the blocked ends. A circle of floating bodies 73 is fixedly connected to the edge of the bottom plate of the plate body 71, and a limit rod 74 is symmetrically slidably inserted in the horizontal direction on the plate body 71. When the ecological floating bed 7 is placed on the water surface, the lower end of the planting tube 72 extends into the water. The advantage of using the ecological floating bed 7 to plant aquatic plants is that the aquatic plants are planted on the ecological floating bed 7, which is convenient for removing the aquatic plants in winter.

[0022] When treating tail water, open valve 111 on drainage pipeline 11, and tail water enters ecological ditch 1 from breeding pond 9, stays in ecological ditch 1 for 1 to 2 hours, and completes preliminary purification by aquatic plants. After the preliminary purification is completed, open sluice gate 12, and tail water enters sedimentation tank 2 from ecological ditch 1, and the preliminary purified breeding tail water is collected in sedimentation tank 2, and suspended matter and other substances in the water body are precipitated by sedimentation and water retaining facilities in sedimentation tank 2. Tail water is precipitated for 5 to 7 days, and after the treatment is completed, filter dam 3 is opened to filter tail water. , further remove suspended matter in the water, the tail water enters the aeration tank 4, and the aeration equipment in the tank is used to increase the dissolved oxygen in the water, accelerate the decomposition of organic matter in the water, and the tail water is retained for 2 to 3 days. After the treatment is completed, the filter dam 2 5 is opened, and the filter dam 2 5 filters the tail water to further remove suspended matter in the water. The tail water enters the ecological purification tank 6, and the aquatic plants planted in the ecological purification tank 6 and the aquatic animals cultured absorb nitrogen and phosphorus nutrients in the water. The tail water is retained for 7 to 10 days. After the treatment is completed, the treated water is discharged into the breeding pond 9 or the external ditch through the water pump 8 and the drainage pipe 2 81.

[0023] The utility model has a simple structure and a reasonable design. The freshwater pond aquaculture tailwater treatment system accounts for more than 10% of the total aquaculture area, has a reasonable layout, high tailwater treatment efficiency, and good treatment effect. The entire system applies new technologies and processes such as physical and biological purification treatment to accelerate the construction of pond circulation treatment systems, promote the resource utilization of aquaculture tailwater or meet discharge standards, and help the healthy and green development of the aquaculture industry.

Claims

1. A freshwater pond aquaculture tailwater treatment system, characterized in that: It comprises an ecological ditch (1) arranged between the breeding ponds (9), wherein one side of the ecological ditch (1) is connected in sequence to a sedimentation tank (2), a first filter dam (3), an aeration tank (4), a second filter dam (5), and an ecological purification tank (6).

2. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: Aquatic plants are planted in the ecological ditch (1), and a drainage pipeline (11) with a valve (111) is provided between the ecological ditch (1) and the breeding pond (9).

3. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: A sluice gate (12) is provided between the ecological ditch (1) and the sedimentation tank (2).

4. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: The sedimentation tank (2) has a water depth of 1.5-3 m and is provided with water retaining facilities.

5. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: The filter dam 1 (3) and the filter dam 2 (5) have the same structure. The filter dam 1 (3) uses hollow bricks to construct the dam body, and the middle of the dam body is filled with filter material.

6. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: An aeration plate, an aeration pipe, and an aerator are arranged in the aeration tank (4), and biological fillers are arranged vertically along the water flow in the aeration tank (4).

7. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: Aquatic plants are planted or an ecological floating bed (7) is placed in the ecological purification pool (6), and aquatic animals are cultured.

8. A freshwater pond aquaculture tailwater treatment system according to claim 7, characterized in that: The ecological floating bed (7) comprises a plate body (71), a plurality of planting tubes (72) are evenly inserted into the plate body (71), a circle of floating bodies (73) are fixedly connected to the edge of the bottom plate of the plate body (71), and a limit rod (74) is symmetrically slidably inserted into the plate body (71) in a horizontal direction.

9. A freshwater pond aquaculture tailwater treatment system according to claim 1, characterized in that: One side of the ecological purification pool (6) is connected to a water pump (8), and the other end of the water pump (8) is connected to a second drainage pipeline (81), through which the treated water is discharged into a breeding pond (9) or an external ditch.

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