CN211946719U - Ecological wetland purifying pond for breeding sewage - Google Patents

Abstract

An ecological wetland purification pond for aquaculture sewage, which includes a purification pond body, the purification pond body is divided into two parts, an ecological wetland pond and a gravel purification pond by a baffle, and the bottom of the baffle does not contact the bottom of the purification pond body. And a seepage flow port is formed that connects the ecological wetland pool and the gravel purification pool; the upper part of the ecological wetland pool is provided with a sewage inlet, and the bottom of the ecological wetland pool is inclined towards the seepage flow port, so that the seepage flow port is located in the ecological wetland pool. The lowest part of the bottom; the inside of the ecological wetland pool is sequentially laid with a gravel layer, a stainless steel metal filter screen layer and a soil matrix layer, and a submerged plant layer and an emergent plant layer are arranged on the water surface above the soil matrix layer. The utility model has the advantages that the activities of submerged plants and emergent plants are used to reduce nitrogen, phosphorus and other pollutants in aquaculture sewage, the sewage treatment efficiency of the wetland purification tank is effectively improved, and the investment cost is low.

Description

An ecological wetland purification tank for aquaculture sewage

technical field

The utility model relates to the technical field of aquaculture equipment, in particular to an ecological wetland purification tank for aquaculture sewage.

Background technique

Existing aquaculture ponds will produce a large amount of aquaculture sewage during the breeding process, and these sewages need to be treated and purified before they can be recycled and reused. Therefore, an ecological wetland purification pond for aquaculture sewage is required to carry out ecological purification treatment of the precipitation and filtered aquaculture sewage.

Utility model content

The purpose of this utility model is to aim at the above-mentioned deficiencies, and to provide an ecological wetland purification pond for aquaculture sewage.

The utility model comprises a purification pool body, the purification pool body is divided into two parts, an ecological wetland pool and a sand and gravel purification pool by a baffle plate, and the lowermost part of the baffle plate is not in contact with the bottom of the purification pool body And form a seepage flow port connecting the ecological wetland pond and the gravel purification pond;

The upper part of the ecological wetland pool is provided with a sewage inlet, and the bottom of the ecological wetland pool is inclined toward the seepage flow opening, so that the seepage flow opening is at the lowest point of the bottom of the ecological wetland pool;

The inside of the ecological wetland pool is sequentially laid with a gravel layer, a stainless steel metal filter screen layer and a soil matrix layer from bottom to top, and a submerged plant layer and an emergent plant layer are arranged in the water surface above the soil matrix layer;

The upper part of the sand purification tank is provided with a water outlet, and the height of the water outlet is lower than the height of the sewage inlet;

A sand and gravel layer is laid on the bottom of the sand and gravel purification pond, and the thickness of the sand and gravel layer is half of the height of the sand and gravel purification pond.

The depth of the purification tank body is 1.8-2.5m.

Both the bottom and the inner wall of the purification pool body are coated with a waterproof coating layer.

The thickness of the gravel layer is 45-60 cm, and gravel particles with a particle size of 50-160 mm are used, and the gravel particles are zeolite or cobblestone.

The thickness of the soil matrix layer is 60-80 cm.

The height of the seepage flow opening is 10-15 cm.

The sand and gravel layer adopts sand with a particle size of 1-5 mm.

The utility model has the advantages that the activities of submerged plants and emergent plants are used to reduce nitrogen, phosphorus and other pollutants in aquaculture sewage, the sewage treatment efficiency of the wetland purification tank is effectively improved, and the investment cost is low.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

Detailed ways

As shown in the accompanying drawings, the utility model includes a purification pool body, which is divided into two parts, an ecological wetland pool 52 and a sand and gravel purification pool 53 by a baffle plate 51. The lowermost part of the baffle plate 51 and the The bottom of the purification pond body does not contact and forms a seepage flow port 58 connecting the ecological wetland pond 52 and the gravel purification pond 53;

The upper part of the ecological wetland pond 52 is provided with a sewage inlet 54, and the bottom of the ecological wetland pond 52 is inclined toward the seepage flow port 58, so that the seepage flow port 58 is at the lowest position at the bottom of the ecological wetland pond 52;

The inside of the ecological wetland pool 52 is sequentially laid with a gravel layer 55, a stainless steel metal filter screen layer 56 and a soil matrix layer 57 from bottom to top, and a submerged plant layer 59 and a submerged plant layer 59 are arranged in the water surface above the soil matrix layer 57. water plant layer 60;

The upper part of the sand purification tank 53 is provided with a water outlet 61, and the height of the water outlet 61 is lower than the height of the sewage inlet 54;

A sand and gravel layer 62 is laid on the bottom of the sand and gravel purification tank 53 , and the thickness of the sand and gravel layer 62 is half of the height of the sand and gravel purification tank 53 .

The depth of the purification tank body is 1.8-2.5m.

Both the bottom and the inner wall of the purification pool body are coated with a waterproof coating layer.

The thickness of the gravel layer 55 is 45-60 cm, and gravel particles with a particle size of 50-160 mm are used, and the gravel particles are zeolite or cobblestone.

The thickness of the soil matrix layer 57 is 60-80 cm.

The height of the seepage flow opening 58 is 10-15 cm.

The sand and gravel layer 62 adopts sand with a particle size of 1-5 mm.

Working method: After initial treatment such as sedimentation, aeration filtration, etc., the sewage from aquaculture fish pond enters into the ecological wetland pond through the sewage inlet, and the sewage passes through the emergent plant layer and the submerged plant layer in the ecological wetland pond. , phosphorus and other pollutants are absorbed, and then slowly infiltrate through the soil matrix layer, stainless steel metal filter layer and gravel layer, and enter the bottom of the sand purification tank through the seepage flow port, and then slowly penetrate through the sand and gravel under the action of water pressure. Finally, it overflows through the sand and gravel layer and overflows from the water outlet on the upper part of the sand and gravel purification tank, so that the recycling of aquaculture sewage can be realized. The ecological purification tank of the utility model utilizes the activities of submerged plants and emergent plants to reduce nitrogen, phosphorus and other pollutants in aquaculture sewage, effectively improves the sewage treatment efficiency of the wetland purification tank, and has low investment cost.

Claims (7)

1. The ecological wetland purification tank for the aquaculture sewage is characterized by comprising a purification tank body, wherein the purification tank body is divided into an ecological wetland tank (52) and a gravel purification tank (53) by a baffle (51), the lowest part of the baffle (51) is not contacted with the bottom of the purification tank body, and a water seepage port (58) for communicating the ecological wetland tank (52) with the gravel purification tank (53) is formed;

the upper part of the ecological wetland pool (52) is provided with a sewage inlet (54), the bottom of the ecological wetland pool (52) is obliquely arranged towards the seepage flow port (58), so that the seepage flow port (58) is positioned at the lowest position of the bottom of the ecological wetland pool (52);

a ballast layer (55), a stainless steel metal filter screen layer (56) and a soil matrix layer (57) are sequentially paved inside the ecological wetland pool (52) from bottom to top, and a submerged plant layer (59) and an emergent aquatic plant layer (60) are arranged in the water surface above the soil matrix layer (57);

a water outlet (61) is arranged at the upper part of the gravel purification tank (53), and the height of the water outlet (61) is smaller than that of the sewage inlet (54);

a gravel layer (62) is laid at the bottom of the gravel purification pool (53), and the thickness of the gravel layer (62) is half of the height of the gravel purification pool (53).

2. The ecological wetland purification tank for aquaculture sewage of claim 1, wherein the depth of the tank body of the purification tank is 1.8-2.5 m.

3. The ecological wetland purification tank for aquaculture sewage of claim 1, wherein the bottom and the inner wall of the purification tank body are coated with waterproof coating layers.

4. The ecological wetland purification tank for aquaculture sewage according to claim 1, characterized in that the thickness of the ballast layer (55) is 45-60 cm, and ballast particles with the particle size of 50-160 mm are adopted, and the ballast particles are zeolite or cobblestones.

5. The ecological wetland purification tank for aquaculture sewage of claim 1, characterized in that the thickness of the soil matrix layer (57) is 60-80 cm.

6. The ecological wetland purification tank for aquaculture sewage of claim 1, characterized in that the height of the seepage openings (58) is 10-15 cm.

7. The ecological wetland purification tank for aquaculture sewage of claim 1, characterized in that the gravel layer (62) is made of gravel with a particle size of 1-5 mm.

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