CN105830991A - Culture pond system realizing rotational-flow dirt collection - Google Patents

Abstract

The invention relates to a culture pond system for swirl sewage collection, comprising a circular or regular polygonal pool body, the center of the pool body has a certain taper downward; the bottom of the pool body is provided with a swirl sewage collection device, which With a motor, the motor drives the horizontal support rod to rotate, and the end of the support rod is connected to the propeller; the distance between the propeller and the bottom of the pool is less than 1 meter; there is a support column under the motor, and the support column is fixedly connected to the sewage collection tank, and the sewage collection tank is fixed The particles are collected and connected to the bottom particle discharge pipe, which discharges the sewage out of the pool; the side wall of the pool is equipped with a clean water discharge pipe, and the near side walls of the pool are respectively equipped with water inlet pipes, aeration and oxygen enhancement The upper layer of clean water discharged from the clean water discharge pipe accounts for 80%-90% of the drainage, and is purified by the water purification system and then returns to the pool through the water inlet pipe; the sewage discharged from the particulate matter discharge pipe accounts for 10%-20% of the discharge.

Description

A culture pond system for swirling sewage collection

technical field

The invention relates to a culture pond system for swirling sewage collection, and belongs to the technical field of culture pond systems.

Background technique

Industrialized aquaculture ponds have the characteristics of land saving, energy saving, high efficiency, and emission reduction. In recent years, they have developed rapidly in Jiangsu, Zhejiang, Shandong and other places in my country. At present, industrialized aquaculture ponds are generally rectangular ponds. Water enters from one side and exits from the other. In the form of push flow, more fish feces are often deposited at the bottom of the aquaculture pond, resulting in serious pollution of the aquaculture water.

First of all, for sewage collection, there is a high-level pond circulating water fish farming system in the prior art, which collects sewage by swirling with a surge machine. But the system has many shortcomings in actual operation. During the operation of the wave machine, it is easy to cause the exchange of the upper and lower water layers, resulting in an upward current, which will bring the feces and residual bait deposited at the bottom of the pool back to the water body, causing secondary pollution.

Second, in the existing circulating aquaculture pond system, all the sewage is discharged from the bottom, which makes it difficult to separate and purify, which brings greater pressure to the subsequent purification system.

Third, in the existing recirculating aquaculture pond system, the aeration facilities greatly interfere with the water flow, which is not conducive to the discharge and circulation of the water flow.

Fourth, the existing circulating aquaculture pond system has poor effect of forming swirling flow, which is not conducive to water body flow and water circulation.

Fifth, the existing high-level pool produces hydrocyclone sewage collection technology around the waterwheel aerator, which has problems such as poor hydrocyclone velocity in the middle of the pond and poor sewage collection effect, especially when the fish breeding density is high, the hydrocyclone The flow velocity is low, which makes it difficult to remove feces and residual bait in high-density fish farming.

Contents of the invention

The technical problem to be solved in the present invention is: in the existing swirl sewage collection pond system, since the surge machine is in operation, it is easy to cause the exchange of the upper and lower water layers, and the rising water generated by the surrounding water of the surge machine will deposit the pond The feces and residual bait at the bottom are brought back to the water body, causing secondary pollution; all the sewage is discharged from the bottom, and it is difficult to separate and purify, which brings greater pressure to the purification facility; the aeration facility interferes more with the water flow. It is not conducive to the work of water discharge and circulation; the effect of forming swirl is poor, which is not conducive to water flow and water circulation; the speed of hydrocyclone in the middle of the pond is poor, and the effect of sewage collection is poor, especially when the fish breeding density is high. When the hydrocyclone velocity is low, it is difficult to remove feces and residual bait in high-density fish culture.

The present invention takes the following technical solutions:

A culture pond system for swirl sewage collection, comprising a circular or regular polygonal pool body 1, the center of the pool body 1 has a certain taper downward; the bottom of the pool body 1 is provided with a swirl flow sewage collection device 3, The swirling sewage collecting device 3 has a motor 303, and the motor 303 drives the horizontal support rod 302 to rotate, and the end of the support rod 302 is connected with the propeller 301; the direction of the swirling flow generated by the propeller 301 is vertically downward, and the propeller 301 The distance from the bottom of the pool is less than 1 meter; a support column 304 is provided below the motor 303, and the support column 304 is fixedly connected with the dirt collection tank 305, and the dirt collection tank 305 collects the fixed particles, and connects with the bottom particle discharge pipe 5 Connected, the bottom particle discharge pipe 5 discharges the sewage out of the pool body 1; the side wall of the pool body 1 is provided with a clean water discharge pipe 6, and the near side wall of the pool body 1 is respectively provided with a water inlet pipe 2 and an aeration and oxygenation pipe 4 The upper layer clean water discharged by the clean water discharge pipe 6 accounts for 80%-90% of the displacement, and is purified by the water purification system and returns to the pool body 1 through the water inlet pipe 2; the sewage discharged by the particulate matter discharge pipe 5 accounts for 80%-90% of the discharge. 10%-20% of.

This technical scheme divides the industrialized rectangular flowing water aquaculture pond with poor sewage collection capacity into a series of square or octagonal unit ponds, and realizes the water flow rotation in each unit pond through a certain hydraulic arrangement, and swirls the particulate matter in the pond to the center of the pond , the particles are discharged out of the pool through the discharge device at the bottom of the center of each pool. This part of the water only accounts for about 10-20% of the total water volume, and can be recycled into the pool after purification; the other accounts for 80-90% of the total water volume. The cleaner water in the upper layer of the pool is discharged from another pipe to the outside of the pool, and can be reused after simple purification.

Further, the water inlet pipe 2 and the aeration and oxygenation pipe 4 are arranged side by side, and the aeration hole of the aeration and oxygenation pipe 4 is opened on one side of the pipe wall, aligned with the water inlet pipe 2, to push the water flow into the pool body 1 , the auxiliary cyclone sewage collection device 3 generates swirl.

Furthermore, the pool body 1 has a regular octagonal structure, and the water inlet pipe 2 and the aeration and oxygenation pipe 4 are arranged at one side.

Furthermore, the dirt collection tank 305 has a rounded platform structure, and the bottom particle discharge pipe 5 is horizontally connected to the dirt collection tank 305 .

The beneficial effects of the present invention are:

1) The swirling sewage collection device is located close to the bottom of the pool, which generates a stable downward swirling flow, avoids the exchange of water layers, and prevents the feces and residual bait deposited at the bottom of the pool from being brought back to the water body, thereby avoiding secondary pollution. pollute.

2) Sewage and clean water are separated in layers, the sewage is discharged directly, and most of the clean water is discharged from the upper part, purified by the purification system, and finally reused, which reduces the pressure on the purification facilities and has a better purification effect .

3) The aeration pipe is set at the edge of the pool body, which has little interference with the water flow, and the aeration direction is unidirectionally aligned with the water inlet pipe, which assists in generating a certain swirling effect and is beneficial to the circulation of the water flow.

4) The speed of the hydrocyclone in the middle of the pond is greatly increased, the sewage collection effect is improved, and the speed of the hydrocyclone is increased. Especially when the fish breeding density is high, the feces and residual bait in the high-density fish breeding can also be easily removed.

5) Through the setting of the inlet and drainage system and the aeration and outlet holes, a hydrocyclone is generated in the square-cut and rounded pool body, which promotes the collection of surrounding fish feces and residual bait.

6) By adding a swirling sewage collection device at the bottom of the center of the pool, the problem that feces and residual bait were difficult to collect and remove due to the poor sewage collection effect of the swirl in the center of the pool body in the past was changed.

7) Only decompose and treat the bottom material that is most harmful to the environment at the bottom of the pond, which greatly reduces the difficulty and water volume of the treatment, and the project cost is low and the benefit is high.

8) Aiming at the problem that it is difficult to effectively collect feces and residual bait in ordinary square-cut and rounded aquaculture ponds, a high-efficiency swirling sewage collection device is designed and installed in the center of the pond bottom, through which the swirling water generated by running on the bottom of the pond accelerates The collection of fish feces and residual bait solves the problem that it is difficult to collect feces and residual bait in the center of the traditional breeding pond.

9) Compared with using the swirl machine to collect the sewage, the high-efficiency swirl device is used to collect the sewage, which only swirls at the bottom of the pool and does not produce the exchange of upper and lower water layers, which solves the problem that the wave machine is easy to collect and confluence at the bottom of the pool due to the hydraulic lift The feces and residual bait are brought back to the water body, causing the problem of secondary pollution.

10) The double sewage system is adopted to discharge clean water and water containing more particulate pollutants, which is conducive to the collection and reuse of clean water, as well as the collection and treatment of pollutants. Significantly reduce the waste water of traditional breeding ponds, there is only one sewage outlet, the sewage is discharged in a centralized manner, the treatment volume is large, and the efficiency is low. Significantly improve water utilization efficiency.

11) Removing only the sediment, which is the most polluting source of water, can greatly reduce the amount of water treatment.

Description of drawings

Fig. 1 is a three-dimensional structural view of the swirl sewage collection culture pond system of the present invention.

Fig. 2 is a top view of the swirl sewage collection culture pond system of the present invention.

Fig. 3 is a sectional view along A-A in Fig. 2 .

FIG. 4 is a partially enlarged view of FIG. 3 .

In the figure, 1. Pool body, 2. Water inlet pipe, 3. Cyclone sewage collection device, 4. Aeration and oxygenation pipe, 5. Particulate matter discharge pipe, 6. Clean water discharge pipe, 301. Propeller, 302. Support rod , 303. Motor, 304. Support column, 305. Sewage collection tank, 306. Fish escape plate.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1-Fig. 4, a culture pond system for swirling sewage collection, including a circular or regular polygonal pond body 1, the center of the pond body 1 has a certain taper downward; the bottom of the pond body 1 is provided with The swirl sewage collection device 3, the swirl sewage collection device 3 has a motor 303, the motor 303 drives the horizontal support rod 302 to rotate, and the end of the support rod 302 is connected with the propeller 301; the direction of the swirl flow generated by the propeller 301 is Vertically downward, the distance between the propeller 301 and the bottom of the pool is less than 1 meter; a support column 304 is provided below the motor 303, and the support column 304 is fixedly connected with the dirt collection tank 305, and the dirt collection tank 305 collects fixed particles, And communicate with the bottom particle discharge pipe 5, the bottom particle discharge pipe 5 discharges the sewage out of the pool body 1; the side wall of the pool body 1 is provided with a clean water discharge pipe 6, and the near side wall of the pool body 1 is respectively provided with a water inlet pipe 2 , aeration and oxygenation pipe 4; the upper layer of clean water discharged by the clean water discharge pipe 6 accounts for 80%-90% of the displacement, and is purified by the water purification system and returns to the pool body 1 through the water inlet pipe 2; the particulate matter discharge The sewage discharged by the pipe 5 accounts for 10%-20% of the water discharge.

Referring to Fig. 1, the water inlet pipe 2 and the aeration and oxygenation pipe 4 are arranged side by side. Promote, the auxiliary swirl sewage collection device 3 generates swirl.

Referring to Figures 1-2, the pool body 1 has a regular octagonal structure, and the water inlet pipe 2 and the aeration and oxygenation pipe 4 are arranged at one side.

Referring to FIG. 4 , the dirt collection tank 305 has a rounded platform structure, and the bottom particle discharge pipe 5 is horizontally connected to the dirt collection tank 305 .

The invention divides the industrialized rectangular running water aquaculture pond with poor sewage collection capacity into a series of square or octagonal unit ponds, and realizes the water flow rotation in each unit pond through a certain hydraulic arrangement, and swirls the particulate matter in the pond to the center of the pond, The particles are discharged out of the pool through the discharge device at the bottom of the center of each pool. This part of the water only accounts for about 10-20% of the total water volume, and can be recycled into the pool after purification; another part accounts for 80-90% of the total water volume. The cleaner water in the upper layer is discharged from another pipe to the outside of the pool, and can be reused after simple purification.

The invention adopts a novel swirling flow sewage collection system for aquaculture ponds, which improves the collection efficiency of feces and residual bait in high-density fish ponds, and reduces the pollution load of fish ponds. Through the design of the water inlet and the design of the aeration device, the original rectangular flowing water fish ponds are transformed into square aquaculture pond units with rounded corners, and a swirling sewage collection device is installed at the bottom of the middle of the pond body. A sewage collection tank is set under the sewage collection device, and a protective cover is installed on the upper part of the sewage collection tank. Through the operation of the swirl sewage collection device, the water body at the bottom of the pool is driven to rotate, and the centrifugal force generated will collect the feces and residual bait scattered on the bottom of the pool to the protective cover. It is transported to the outside of the fish pond through pipelines to realize the removal of fish feces and residual bait, and at the same time increase oxygen through the aeration device.

The following examples illustrate in detail:

Application in high-density fish ponds:

A culture pond with square cut and rounded corners is built. The aquaculture system consists of aquaculture ponds, water inlet and drainage facilities, aeration and aeration systems, high-efficiency cyclone sewage collection devices, etc., as shown in Figures 1, 2, and 3. Among them, the size of the culture pond body 1 is about 20m, and the bottom of the pond is inclined towards the central sewage pit, and the sewage pit is located at the lowest center of the bottom of the pond. Construction of water inlet and drainage facilities: 110UPVC water inlet standpipe 2 is used for water inlet, and the standpipe 2 has a water outlet hole. The collected water body with high concentration of suspended particles is discharged from the UPVC90 drain pipe 5 at the bottom of the pool to the outside of the pool. This part of the water only accounts for about 10-20% of the total water volume, which is convenient for the collection and utilization of particulate matter in the water body; 80-90% of the relatively clean water in the upper layer is discharged from the UPVC200 drainage pipe 6 on the side of the pool wall to the outside of the pool, and then returns to the pool 1 after purification, which greatly improves the utilization efficiency of the water body. This mode can realize the classification of wastewater in the breeding process Collect and treat to reduce the pressure of subsequent wastewater treatment. Construction of aeration and oxygenation system: rationally arrange UPVC90 aeration pipes 4 around the pond. The aeration pipes are made of PVC pipes, with holes on the PVC pipes, and the opening direction is parallel to the pool wall. The strong gas thrust establishes the water swirl in the pool, which is convenient for building sewage around the pool. The high-efficiency sewage collection device 3 is located at the bottom of the center of the pool body.

In 1-2h after the fish feeding, open the high-efficiency sewage collection device 3, as shown in Figure 4, the motor 303 drives the propeller 301 to rotate, stir the water body, generate water flow in the center of the pond, and remove the excrement and waste produced by the fish. The residual bait is collected in the sewage collection device in the center of the bottom of the pond for removal. Among them, the propeller 301 is composed of two symmetrical blades, the length of a single propeller is 3-4m, and the effective rotation range of two blades is about 6-8m in diameter. Deposited feces and residual bait.

Claims (4)

1. A culture pond system for swirling sewage collection, characterized in that: It includes a circular or regular polygonal pool body (1), and the center of the pool body (1) has a certain taper downward; The bottom of the pool body (1) is provided with a swirl sewage collection device (3), and the swirl sewage collection device (3) has a motor (303), and the motor (303) drives the horizontal support rod (302) to rotate, so that The end of the support rod (302) is connected to the propeller (301); the direction of the swirling flow produced by the propeller (301) is vertically downward, and the length of a single propeller accounts for about 20-40% of the radius of the pool body. The propeller (301) and The distance at the bottom of the pool is less than 1 meter; a support column (304) is provided below the motor (303), and the support column (304) is fixedly connected with the dirt collection tank (305), and the dirt collection tank (305) carries out the cleaning of the fixed particles. Collect and communicate with the bottom particle discharge pipe (5), and the bottom particle discharge pipe (5) discharges the sewage out of the pool body (1); The side wall of the pool body (1) is provided with a clean water discharge pipe (6), and the near side wall of the pool body (1) is respectively provided with a water inlet pipe (2) and an aeration and oxygenation pipe (4); The upper layer of clean water discharged by the clean water discharge pipe (6) accounts for 80%-90% of the water discharge, and is purified by the water purification system and returns to the pool body (1) through the water inlet pipe (2); the particulate matter discharge pipe ( 5) The discharged sewage accounts for 10%-20% of the water discharge. 2. The culture pond system of swirling sewage collection as claimed in claim 1, characterized in that: the water inlet pipe (2) and the aeration and oxygenation pipe (4) are arranged side by side, and the aeration and oxygenation pipe (4) The aeration hole is opened on one side of the pipe wall, aligned with the water inlet pipe (2), and pushes the water flow entering the pool body (1), and assists the swirl flow sewage collection device (3) to generate swirl flow. 3. The aquaculture pond system for swirling sewage collection as claimed in claim 2, characterized in that: the pond body (1) has a regular octagonal structure, and the water inlet pipe (2) and the aeration and oxygenation pipe (4) are arranged at the position of one of the edges. 4. The culture pond system of swirling sewage collection as claimed in claim 2, characterized in that: the sewage collection tank (305) is in a rounded platform structure, and the bottom particle discharge pipe (5) is transverse to the sewage collection tank (305) Horizontal connections.