CN205455413U - Surface blowdown and device of administering blue alga oxygenation simultaneously - Google Patents

Abstract

The utility model discloses a device for simultaneously increasing oxygen on the surface of a culture pond for discharging sewage and treating cyanobacteria. A drainage pipe is installed vertically at the sewage discharge point in the center of the pond to be inserted into the drainage outlet. The upper end of the drainage pipe is connected to a 90-degree elbow through a bearing, and the elbow is then horizontally connected to a section of one-way open sewage pipe. Aerators on the surface of the water. In the utility model, a standpipe is fixed in the center of the pond and is impermeable, and there are holes in the horizontal pipe, half of which is submerged in the surface water, so after the outside sewage pipe is pulled out, only the surface water flows out through the pipe hole, and the horizontal pipe When the tube is rotating, all the dirt on the surface is sucked into the tube and discharged. And because cyanobacteria is generally concentrated in the surface layer of water, the utility model can discharge surface water exclusively, just can discharge cyanobacterium simultaneously, controls cyanobacteria. Since the aerator is not fixed, when the aerator is turned on, the tube is pushed to rotate around the central tube along the water surface, and the rotating aerator and the driven tube stir the surface water to achieve the purpose of increasing oxygen.

Description

A device for surface sewage discharge and cyanobacteria treatment and simultaneous oxygenation

technical field

The utility model relates to the field of aquaculture, in particular to a device for simultaneously increasing oxygen on the surface of aquaculture ponds for discharging sewage and treating cyanobacteria.

Background technique

During the aquaculture process, there are often dead algae and other debris floating on the water surface of the aquaculture pond. First, it will affect the dissolved oxygen in the air to enter the water body, and second, it is easy to be poisoned by aquaculture species such as fish and shrimp. The aquaculture sediment decomposes at the bottom of the pond to consume oxygen, release toxic and harmful substances, and pollute the water body, resulting in frequent fish diseases, low feed conversion rate, and increased aquaculture costs. Endogenous contamination. At present, the method of sewage discharge at the bottom of the pond is widely promoted throughout the country, and the pond is transformed into a central sewage pond. A pot-bottom structure is adopted, that is, a sewage outlet is set in the center of the pond, and the PVC pipe is buried at the bottom of the pond to lead directly to the outside of the pond. The sewage outside the pond There is a PVC pipe in place, which is higher than the water surface of the pond, which can be used to detect the water level of the pond. When the sewage is discharged, the standpipe is pulled out, and the water is discharged due to the water pressure. This method of sewage discharge is called bottom sewage discharge, which can effectively improve the water quality of aquaculture and increase the quality and output of fish in the pond. Pond water lacks oxygen at night.

Cyanobacteria blooms are the result of continuous eutrophication of water bodies in recent years. Harmful algae blooms in natural lakes, rivers and aquaculture water have become a global problem that seriously affects the quality of the water environment and the ecological safety of water bodies. The rapid development of industry and agriculture has accelerated The discharge of eutrophic salts such as nitrogen and phosphorus and the eutrophication of water bodies are also seriously affected. At the same time, it also seriously affects the development of aquaculture. In recent decades, people have carried out a lot of experiments and research work on the removal of algae blooms. Generally, physical methods, chemical methods, water exchange methods to remove algae, biological treatment methods, combined technology methods and animal predation are used to treat them. Although the chemical algae removal technology has the advantages of rapid and efficient algae removal, the addition of chemical agents will bring new pollution to the water body. There are many kinds of agents used in chemical methods, such as copper sulfate, which has a short-term effect and is itself a pollutant, so it is not suitable for repeated application. Changing the water method treats the symptoms, not the root cause. The biological method is to use the natural enemies of algae and the growth inhibitory substances produced to inhibit the growth and reproduction of algae. This kind of organisms should not only efficiently and quickly remove Microcystis, but also ensure that it will not cause species invasion hazards to aquaculture water and other water bodies, and it will not pose a threat to the microbial community structure and ecological balance of the water body itself. It can be used in practical production applications at present. There are very few algae-killing strain preparations on the market, and most of them can only stay in the laboratory stage. Biological methods, especially microbial algae dissolution, have a slow onset time and a long duration of action, making it difficult to use in actual aquaculture production practice. Using physical methods to remove algae, such as using containers to mechanically harvest algae, is difficult to apply to the removal of large-area water pollution (time-consuming and costly). The flocculation and sedimentation method is a method for removing algae from water bodies by enriching algae through the molecular attraction between adsorbents and algae or between algae and pollutants. However, the dosage of ready-made flocculants is very large. It is difficult to achieve the desired effect if the dosage is small. Although there are many methods for controlling cyanobacteria, each method has its own advantages and disadvantages and cannot be widely used. And blue-green algae is a kind of ubiquitous algae, mainly distributes in the water surface layer, absorbs the sunlight and reproduces rapidly, easily causes the lack of oxygen in the pond water body at night and causes the cultured species to die.

Contents of the invention

The utility model can simultaneously realize the three purposes of removing surface dirt, removing cyanobacteria and increasing oxygen in the middle of the pond through a device.

The technical scheme that the utility model takes is:

A device for simultaneously increasing oxygen on the surface of sewage and controlling blue-green algae, characterized in that a drainage pipe is vertically installed at the sewage discharge point in the center of the pond to be inserted into the drainage outlet, the upper end of the drainage pipe is connected to a 90-degree elbow through a bearing, and the elbow is connected horizontally to a section of one-way opening. The end of the sewage pipe is connected to an aerator floating on the water surface through a joint.

The length of the sewage discharge pipe is adjusted according to the radius of the pond, half of the pipe is submerged in the water surface, and a row of round holes is opened on one side of the direction of rotation.

The aerator is not fixed.

The beneficial effects of the utility model are:

In the utility model, a standpipe is fixed in the center of the breeding pond and is impermeable, and there are holes in the horizontal pipe, and half of it is submerged in the surface water, so after the outside sewage pipe is pulled out, only the surface water flows in through the hole on the horizontal pipe. , plus the horizontal tube is rotating, all the dirt on the surface is sucked into the tube and discharged. However, because blue-green algae are generally concentrated on the surface of the water, the traditional bottom sewage discharge cannot discharge the surface water, and it is impossible to really control the blue-green algae. Splashing chemicals can easily affect the growth of fish and shrimp. The utility model can specifically discharge the surface water and sundries, It also discharges blue-green algae while sucking out surface dirt, and controls blue-green algae. In addition, the aerator of the utility model is not fixed, and when the aerator is started, the horizontal tube is pushed to rotate around the central tube along the water surface, and the rotating aerator and the driven horizontal tube stir the surface water to achieve the purpose of increasing oxygen. The method of the utility model is scientific and reasonable, simple in structure, and complete in function. Very convenient.

Description of drawings

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

detailed description

Below in conjunction with accompanying drawing embodiment the utility model is described in detail.

The utility model device is as follows:

A large PVC drain pipe 1 is inserted into the drain outlet at the sewage discharge point in the center of the pond. The drain pipe 1 is slightly lower than the water surface by about 20cm. Bearing 2, then connect a 90-degree elbow 3, and then connect a section of PVC sewage pipe 4 horizontally. The length of the pipe can also be adjusted through the joint to meet the requirements of different sizes of ponds. Finally, it is connected to a small aerator 5. The electric cable of the aerator 5 is routed from the middle drain pipe 1 along the sewage pipe 4, which is convenient for rotation. The aerator is not fixed. The sewage pipe 4 rotates around the central pipe along the water surface, half of the sewage pipe 4 is submerged in the water surface, and a row of round holes is punched on one side of the rotation direction, and the surface water can enter through the holes, then flow to the central drainage pipe 1, and flow out of the pond to reach the surface sewage and The purpose of controlling cyanobacteria. In addition, conventional pond aerators are generally distributed at the four corners of the pond near the edge, and there are few oxygenation facilities in the middle. The purpose of aeration can be achieved by stirring the surface water with the rotating aerator and the driven sewage pipe 4 .

Claims (3)

1. surface blow-off and a device for improvement cyanophyceae, simultaneously oxygen supplement, this device arranges drain pipe in culturing pool central vertical (1) insert discharge outlet, it is characterized in that: drain pipe (1) upper end connects 90 degree of bend pipes (3) by bearing (2), and bend pipe (3) is the most horizontal Connecting one section of unidirectional perforate blow-off pipe (4), the end at blow-off pipe (4) connects an aerator bubbled through the water column by joint (5).

Surface blow-off the most according to claim 1 and the device of improvement cyanophyceae, simultaneously oxygen supplement, is characterized in that: described blowdown The length of pipe (4) regulates according to culturing pool radius, and the half of pipe there is not upstream face, direction of rotation side to have row's circular hole.

Surface blow-off the most according to claim 1 and the device of improvement cyanophyceae, simultaneously oxygen supplement, is characterized in that: described oxygen supplement Machine (5) is not fixed.