CN204968967U - Sewage treatment system based on ecological breed - Google Patents

Abstract

The utility model discloses a sewage treatment system based on ecological breeding, which includes a drainage system and a wetland system. The wetland system includes a wetland pool equipped with a vegetable planting system. The drainage system includes a sewage pipe connected to the bottom of the breeding pool and a wetland system. Spot check the shaft, the aquaculture pond is equipped with an oxygenation device, the sewage pipe is connected to the aquaculture pond and the spot inspection shaft, and the spot check shaft is provided with a sewage outlet for discharging sewage to the wetland pool, and a surface water return pipe is connected between the wetland pool and the aquaculture pool. The sewage treatment system effectively treats the bottom water discharged from the aquaculture pond. The bottom water is purified by means of fish and vegetable symbiosis. After reaching the fishery water standard, it re-enters the aquaculture pond to form an ecological purification treatment system for sewage, which solves the problem. The existing farming status of my country's fishery has the advantages of saving resources and reducing environmental pollution.

Description

Sewage treatment system based on ecological farming

technical field

The utility model is a sewage treatment system based on ecological breeding, specifically relates to a sewage treatment system for realizing ecological wetland purification and circulation breeding, and belongs to the technical field of water treatment of aquaculture.

Background technique

At present, my country's aquaculture industry is developing rapidly. With the continuous development of aquaculture technology, the output of ponds continues to increase, and the amount of feeding in ponds has also increased significantly. On the one hand, it has increased the income of farmers. On the other hand, fish The increase of excrement and residual bait exceeds the purification ability of the water body itself, the water body is seriously polluted, and the fish body is prone to illness, which will lead to an increase in the amount of fish medicine, and bring a series of problems of food safety and water resource waste, causing serious economic loss and environmental pollution.

At present, the fish farming in my country has the following situations:

1) The level of wastewater treatment is low, the utilization rate is low, and the equipment is simple. Most ponds adopt the method of directly discharging surface aquaculture wastewater. There is no efficient treatment facility, and circulating aquaculture cannot be realized. The direct discharge of aquaculture wastewater causes a lot of waste of water resources. Some recirculating aquaculture systems such as: patent document CN202890231U (a water circulation treatment system for aquaculture, 2013.04.24) mentioned that the sewage in the aquaculture pond is sequentially passed through biological sedimentation, After filtration and oxygenation, circulating water with water quality meeting the requirements of aquaculture can be obtained, and zero discharge can be achieved. This circulating treatment system has the following defects: the installation cost of multi-stage biological sedimentation tanks is high, and the generated biological sludge needs to be discharged and treated separately. The system process is complex.

2) The residual bait and feces produced during the breeding process generally gather at the bottom of the pond. When the residual bait and feces exceed the microbial utilization of the pond, they will be converted into substances harmful to fish such as ammonia nitrogen and nitrite in large quantities, causing fish It is easy to get sick, the output decreases, and the bottom water is easy to age, ammonia nitrogen and nitrite are easy to exceed the standard, and the bottom water needs to be removed. At present, the best treatment measure is the fish and vegetable symbiosis method, such as: CN101575126A (a sewage purification treatment method and its device and System, 2009.11.11), the waste water and feed residues excreted by fish are the best nutrients for vegetable growth, and the root system and microbial community of vegetables are the best biological filtration system for water treatment and purification, realizing the ideal of fish and vegetable cultivation Sustainable circulation, water forms a closed loop between filter tanks, photocatalytic devices, plant cultivation tanks and breeding ponds to achieve sewage treatment.

3) The surface water contains a large amount of plankton and high dissolved oxygen, so it cannot be directly discharged from the pond, resulting in a waste of resources.

In order to change the current situation of fish farming in our country, the utility model proposes a sewage treatment system based on ecological farming, which provides a basis for pond farming to enter into ecological engineering.

Utility model content

The purpose of this utility model is to provide a sewage treatment system based on ecological breeding. The sewage treatment system can effectively treat the bottom water discharged from the breeding pond, and use the fish and vegetable symbiosis method to purify the bottom water. Re-enter the breeding pond to form an ecological purification treatment system for sewage, which solves the current situation of fish farming in my country, and has the advantages of saving resources and reducing environmental pollution.

The utility model is realized through the following technical solutions: the sewage treatment system based on ecological cultivation includes a drainage system and a wetland system, the wetland system includes a wetland pool equipped with a vegetable planting system, and the drainage system includes Sewage pipes and spot check shafts at the bottom. There is an aeration device in the breeding pool. The sewage pipes are connected to the breeding pool and the spot check shaft. The spot check shaft is provided with a sewage outlet for discharging sewage to the wetland pool. Surface water is connected between the wetland pool and the culture pool. Return tube.

The utility model adopts the drainage system to send the bottom sewage of the breeding pond into the wetland system, and uses the vegetable planting system in the wetland pond to form a fish and vegetable symbiosis system with the breeding pond, which is used to improve the water quality of the bottom sewage, and finally reaches the fishery water standard, and then the surface layer The water return pipe returns the surface water of the wetland pool to the aquaculture pool, forming a wetland ecological purification cycle system in the aquaculture pool, which not only avoids the pollution of the sewage discharge to the environment, but also realizes the effective purification of the bottom sewage. At the same time, it also avoids the discharge of surface water The waste caused by water resources is suitable for extensive promotion and use.

The bottom of the culture pond is provided with a sewage collection port in the shape of a bowl mouth. The bottom of the cultivation pond is usually provided with an inclined ramp greater than 15°. The sewage collection port is located at the lowest point of the inclined ramp, and the sewage collection port is not less than 100cm. × 100cm × 50cm, the diameter of the surrounding solidified area is not less than 10m, and the sewage discharge pipe is connected to the sewage collection port. In the utility model, the sewage discharge pipe can be a PVC pipe with a diameter of not less than 160mm.

The function of the spot check shaft involved in the utility model is to pump the bottom water of the culture pond upwards through pressure. In order to ensure the sufficient aeration of the bottom sewage of the culture pond, a stepped channel for the sewage to pass through in a thin path is provided on the sewage outlet. , when the bottom sewage of the breeding pond is pumped from the spot check shaft to the sewage outlet, it slowly flows into the wetland pool through the stepped channel. The stepped channel is 2m long, 60cm wide, and 50cm high. The sewage increases the contact area with the air through the stepped channel, and the aeration is sufficient. Can increase the number of aerobic bacteria.

The vegetable planting system includes a water surface layer planted with aquatic vegetables and a submerged water layer planted with submerged plants, and a fishing net for fixing aquatic vegetables is laid on the water surface of the wetland pool. On the shelf, choose a fishing net with a mesh of 1 cm. The aquatic vegetables planted on the fishing net can choose one or more of water spinach, water celery and water chestnut.

At the bottom of the wetland pool is a sewage storage and sedimentation tank with a ramp. A sludge outlet is provided at the bottom of the sewage storage and sedimentation tank. The sludge outlet can also be set in the shape of a bowl to facilitate the deposition of bottom sludge. After being extracted and dried in the sun, it can also be used to grow organic vegetables, which is economical and environmentally friendly. The ramp slopes downward along the sewage inlet side of the wetland pool and extends to the sludge outlet. The slope angle of the ramp is 20°.

Further, the wetland pond is equipped with a film anti-seepage system, which is beneficial to remove excess fish feces and residual bait in the pond.

The wetland pool is equipped with a microbial treatment system. In actual use, photosynthetic bacteria and Bacillus complex bacteria can be mixed in a certain proportion to purify the water body, which can strongly decompose carbon, nitrogen, phosphorus, and sulfur pollutants. Complex polysaccharides, proteins and water-soluble organic matter can form dominant bacterial flora in the water environment and improve the water quality improvement effect.

The aeration device includes a water wheel aerator, a microporous aerator, an impeller aerator and a surge machine. The center of the culture pond is provided with a bait feeding area, and the feeding area is provided with a wind feeding feeding area. The bait machine, the surge machine and the impeller aerator are respectively arranged on both sides of the wind-delivered bait machine, and are located on the same straight line as the air-delivered bait machine; the number of the microporous aerators is two Groups are respectively located on both sides of the straight line where the surge machine, the impeller aerator and the wind feeding bait feeding machine are located; the number of the waterwheel aerators is more than one group, and they are arranged along the periphery of the breeding pond. The utility model Compared with a single aerator, the aeration device involved has a better effect in promoting the water body, and can more effectively increase aeration and stir the fish feces and residual bait in the aquaculture pond to the sewage collection port, so as to facilitate the purification of the water body.

The utility model is equipped with a water quality detection device in the wetland pool. In actual use, the water quality detection device is used to detect the water quality in the wetland pool. When the surface water of the wetland pool is ammonia nitrogen≤0.5mg/L and nitrite≤0.1mg/L , open the surface water return pipe, and return the surface water of the wetland pool to the aquaculture pond, so as to achieve the purpose of aquaculture water circulation and save water resources.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) The utility model adopts the drainage system and wetland system to form a fish-vegetable symbiosis mode with the culture pond, purifies the bottom sewage of the culture pond, and reuses the improved surface sewage to the culture pond to realize the purification of the ecological cycle of sewage The treatment not only avoids the pollution of the environment caused by sewage discharge, but also realizes the effective purification of the bottom sewage. At the same time, it also avoids the waste of water resources caused by the discharge of surface water, which is suitable for widespread promotion and use.

(2) The utility model uses a composite oxygenation device to stir the water body. The oxygenation device includes a water wheel aerator, a microporous aerator, an impeller aerator and a surge machine, which is better than a single aerator to promote the water body , it can more effectively increase oxygen and stir the fish feces and residual bait in the aquaculture pond to the sewage collection port, which is convenient for water purification.

(3) The utility model is equipped with a spot check shaft, which uses static pressure to remove the bottom sewage of the aquaculture pond, saves resources, reduces costs, and avoids the waste of water resources caused by the removal of surface water in traditional aquaculture ponds.

(4) The utility model is designed with a stepped channel, and the sewage passes through the stepped channel in a thin path and slowly flows into the wetland pool, which increases the contact area between the sewage and the air, fully aerates, and increases the number of aerobic bacteria.

(5) The wetland pool involved in this utility model is equipped with a thin film anti-seepage system and a microbial treatment system, which uses physics and biology to form a composite artificial wetland system, which has a better purification effect than a single artificial wetland, and can more effectively remove nitrogen and phosphorus. pollutants.

(6) The design of the utility model is reasonable. The water quality detection device is used to monitor the water quality in the wetland pool in real time. When the surface water of the wetland pool meets the fishery breeding requirements, the surface water of the wetland pool can be returned to the aquaculture pool through the surface water return pipe. To achieve the purpose of breeding water circulation and saving water resources.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a schematic diagram of the installation of the oxygen increasing device of the present invention.

Among them, 1—wetland pool, 2—culture pond, 3—sewage pipe, 4—spot check shaft, 5—sewage outlet, 6—surface water return pipe, 7—sewage collection outlet, 8—ladder channel, 9—aquatic vegetables, 10—submerged plants, 11—fishing net, 12—inclined ramp, 13—sewage storage and sedimentation tank, 14—silt outlet, 15—ramp, 16—water wheel aerator, 17—microporous aerator, 18 - impeller aerator, 19 - surge machine, 20 - bait throwing area, 21 - wind feed bait throwing machine.

detailed description

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example 1:

The utility model proposes a sewage treatment system based on ecological cultivation, which uses a drainage system, a wetland system and a breeding pond 2 to form a sewage purification cycle treatment system, wherein the wetland system includes a wetland pond 1 equipped with a vegetable planting system, and the drainage system includes a connection Sewage pipe 3 and spot check vertical shaft 4 at the bottom of culture pond 2, in the culture pond 2, be provided with oxygen increasing device, be used to increase the dissolved oxygen of water body, sewage pipe 3 communicates with culture pond 2 and spot check shaft 4, set up on spot check shaft 4 There is a sewage outlet 5 for discharging sewage to the wetland pool 1, and a surface water return pipe 6 is connected between the wetland pool 1 and the culture pool 2. The spot check shaft 4 involved in the utility model can pump the bottom sewage of the breeding pond 2 to the sewage outlet 5 through the sewage pipe 3, so that the sewage flows into the wetland pool 1, and the vegetable planting system in the wetland pool 1 purifies the sewage. When the water quality in the pool reaches After the fish farming standard, the surface water in the wetland pool 1 is sent to the culture pool 2 by the surface water return pipe 6 to avoid the waste of the surface water.

In this embodiment, the sewage discharge pipe 3 can be a PVC pipe with a diameter of not less than 160mm.

Example 2:

The difference between this embodiment and embodiment 1 is: as shown in Figure 1, this embodiment has made the following improvements on the culture pond 2, spot check shaft 4 and wetland pond 1:

Breeding pond 2: The bottom of the breeding pond 2 is provided with a sewage collection port 7 in the shape of a bowl mouth. The sewage collection port 7 is not less than 100cm×100cm×50cm, and the diameter of the surrounding solidified area is not less than 10m. The sewage pipe 3 is connected to the sewage collection port 7 Above, as shown in Figure 1, the bottom of the culture pond 2 is provided with an inclined ramp 12 greater than 15°, and the sewage collection port 7 is located at the lowest point of the inclined ramp 12.

Wetland pool 1: The vegetable planting system of wetland pool 1 includes a water surface layer planted with aquatic vegetables 9 and a submerged water layer planted with submerged plants 10, and a fishing net 11 for aquatic vegetables 9 is fixed on the water surface of wetland pool 1. Select The mesh is a fishing net 11 of 1 cm, and it is laid on a triangular iron frame to facilitate fixing. The aquatic vegetables 9 planted on the fishing net 11 can choose water spinach, water celery and/or water chestnut; The sedimentation tank 13 has a sludge outlet 14 at the bottom of the sewage storage tank 13. The ramp 15 slopes downward along the side of the sewage inlet of the wetland pool 1 and extends to the sludge outlet 14. The inclination angle of the ramp 15 is 20°, and the sludge The sludge extracted from outlet 14 can be used for planting organic vegetables after being dried in the sun, which is economical and environmentally friendly.

Spot check shaft 4: the sewage outlet 5 of the spot check shaft 4 is provided with a stepped channel 8 for sewage to pass through in a thin road shape, as shown in Figure 1, when the sewage channel at the bottom of the culture pond 2 is sent into the sewage outlet 5 by the spot check shaft 4 At this time, the sewage can slowly flow into the wetland pool 1 along the stepped channel 8, which ensures the full exposure of the sewage. In actual operation, the stepped channel 8 is 2m long, 60cm wide, and 50cm high. Bricks to prevent sewage seepage, and the size is not less than 3m×3m×4m.

Example 3:

The difference between this embodiment and Embodiment 2 is that the wetland pond 1 involved in this embodiment is also provided with a film anti-seepage system and a microbial treatment system, and the film anti-seepage system is conducive to removing excess fish droppings and residual bait in the pond; the microbial treatment system Photosynthetic bacteria and Bacillus complex bacteria can be mixed in a certain proportion to purify the water body, which can strongly decompose carbon, nitrogen, phosphorus, and sulfur pollutants, and decompose complex polysaccharides, proteins, and water-soluble organic matter to form dominant bacteria in the water environment Group, improve the water quality improvement effect, the actual use effect is good.

Example 4:

The difference between this embodiment and Embodiment 3 is that the aeration device involved in this embodiment includes a water wheel aerator 16, a microporous aerator 17, an impeller aerator 18 and a wave generator 19, as shown in Figure 2 , the central position of culture pond 2 is provided with bait throwing area 22, is provided with air-feeding bait-throwing machine 21 in the bait-throwing area 22, surge machine 19 and impeller aerator 18 are located at the both sides of wind-blown bait throwing machine 21 respectively , and is located on the same straight line with the wind feeding bait throwing machine 21; the quantity of the microporous aerator 17 is two groups, which are respectively located on both sides of the straight line where the surge machine 19, the impeller aerator 18 and the wind feeding bait throwing machine 21 ; The quantity of the water wheel aerator 16 is more than one group, and is arranged along the periphery of the culture pond 2 .

In order to provide the oxygenation effect, in the preparation process, the photosynthetic bacteria Bacillus ichthyosa mixed bacteria are mixed according to a certain ratio, and the selected amount is splashed in the morning on a sunny day. Before splashing, 5% brown sugar is added and fully activated for 15 hours. Oxygen is charged during activation, and the pond aerator is turned on when it is splashed.

Example 5:

The difference between this embodiment and Embodiment 4 is that the wetland pool 1 involved in this embodiment is equipped with a water quality detection device, and the water quality detection device can use intelligent monitoring equipment. Water quality, when the ammonia nitrogen in the surface water of the wetland pool 1 is ≤0.5mg/L, and the nitrite is ≤0.1mg/L, open the surface water return pipe 6, and return the surface water of the wetland pool 1 to the aquaculture pool 2 to achieve the circulation of the aquaculture water. The purpose of saving water resources.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model.

Claims (9)

1. based on the sewage disposal system of ecologic breeding, it is characterized in that: comprise drainage system and wet land system, described wet land system comprises the wetland pond (1) being provided with growing vegetables system, described drainage system comprises the blow-off line (3) and selective examination vertical shaft (4) that are connected to culturing pool (2) bottom, culturing pool is provided with oxygen-increasing device in (2), blow-off line (3) is communicated with culturing pool (2) and selective examination vertical shaft (4), selective examination vertical shaft (4) is provided with the sewage mouth (5) to wetland pond (1) sewage effluent, superficial water return duct (6) is connected with between wetland pond (1) and culturing pool (2).

2. the sewage disposal system based on ecologic breeding according to claim 1, is characterized in that: be provided with the dirty mouth (7) of collection in the rim of a bowl shape in the bottom of described culturing pool (2), described blow-off line (3) is connected on the dirty mouth of collection (7).

3. the sewage disposal system based on ecologic breeding according to claim 2, is characterized in that: being provided with for sewage on described sewage mouth (5) is the stepped channel (8) that thin road shape passes through.

4. the sewage disposal system based on ecologic breeding according to claim 3, it is characterized in that: described growing vegetables system comprises the heavy water layer that the water surface layer that kind to be implanted with aquatic vegetable (9) and kind are implanted with submerged plant (10), is equipped with for the fixing fishing net (11) of aquatic vegetable (9) at the water surface of described wetland pond (1).

5. the sewage disposal system based on ecologic breeding according to claim 4, it is characterized in that: store dirty sedimentation basin (13) in the bottom of described wetland pond (1) for what be provided with ramp (15), sludge outlet (14) is provided with in the described bottom storing dirty sedimentation basin (13), ramp (15) is downward-sloping and extend to sludge outlet (14) along wetland pond (1) sewage inlet side, and the angle of inclination of ramp (15) is 20 °.

6. the sewage disposal system based on ecologic breeding according to claim 5, is characterized in that: described wetland pond (1) is provided with membrane seepage prevention system.

7. the sewage disposal system based on ecologic breeding according to claim 6, is characterized in that: be provided with microbe treatment system in described wetland pond (1).

8. the sewage disposal system based on ecologic breeding according to any one of claim 1 ~ 7, it is characterized in that: described oxygen-increasing device comprises water-mill oxygen increasing machine (16), micro-pore oxygenation machine (17), impeller automatic aerator (18) and surge machine (19), the center of described culturing pool (2) is provided with bait throwing in district (20), be provided with wind in bait throwing in district (20) and send device for feeding fish bait (21), described surge machine (19) and impeller automatic aerator (18) are located at the both sides that wind send device for feeding fish bait (21) respectively, and send device for feeding fish bait (21) to be located along the same line with wind; The quantity of described micro-pore oxygenation machine (17) is two groups, is located at the both sides that surge machine (19), impeller automatic aerator (18) and wind send device for feeding fish bait (21) place straight line respectively; The quantity more than one group of described water-mill oxygen increasing machine (16), and along culturing pool (2) periphery and arrange.

9. the sewage disposal system based on ecologic breeding according to claim 8, is characterized in that: in described wetland pond (1), be provided with water quality detecting device.