Photocatalysis-plant cooperated water purifying method for pisciculture water

Abstract

The invention relates to a photocatalysis-plant synergy water purifying method for fish-farming water, which comprises the following steps that: 1) sewage in a fish pond is pumped into a filter tank by a diving pump, solid impurities are filtered by sponge foam, and the intercepted solid impurities are discharged by a blowdown valve; 2) clear water filtered by sponge foam falls into a nacreous glass catalytic reaction curtain which is vertically hung on the side wall of the filter tank to contact and react with a photocatalysis material, wherein the nacreous glass catalytic reaction curtain is formed by connecting glass balls in series and in parallel, and the surfaces of the glass balls are burnt and plated with a TiO2 series catalytic material; and 3) the catalyzed water falls into a plant culture tank; and the water flows into the fish pond after pollutants in the water are reduced. The method has the advantages of good natural light transmission, high mass transfer efficiency, no oxygen supplement and nitrogen release power consumption and no blockage, and the practical characteristics of low cost and continuous work. Except for the water pollution treatment for circulating water fish-farming, the method can also be applied to low concentration water treatment of the occasions of environmental protection, civicism, landscape greenbelts and the like.

Description

technical field [0001] The invention relates to a water body pollution treatment method for fish farming in circulating water, in particular to a continuous water purification process which adopts photocatalytic reaction to degrade organic pollutants in water and cooperates with plant nutrient absorption. Background technique [0002] As the nutritional and health value of aquatic animal protein is gradually recognized, the demand for aquatic products continues to increase, and the fish farming industry has developed rapidly. However, high-density breeding will produce a large amount of organic pollutants, which will damage the water body and endanger the lives of the animals in severe cases. At the same time, sewage discharge also affects the surrounding water ecological environment. Especially in high-density farming with closed circulating water, timely and effective water treatment is even more important. At present, the water pollution treatment method of industrial c...

AI Technical Summary

Problems solved by technology

TiO 2 There are currently two types of photocatalytic reaction devices: suspension and fixed bed. In the suspension reactor, TiO 2 Suspended in a powder state, the specific surface area is large and the mass transfer efficiency is high, but it is difficult to separate after use, and it is easy to condense and deactivate, causing secondary pollution and high operating costs; the fixed bed reactor adopts surface immobilized TiO 2 The inert carrier filling structure of the powder catalyst realizes the photocatalytic reaction through the irradiation of sunlight or ultraviolet light, avoiding the TiO 2 It is difficult to separate and recover the powder catalyst, and it can work continuously, but there are also defects that the reactor is easily blocked by solids, which affects the light and flow.

[0004] Based on the relevant background technologies, there are few reports on the photocatalytic treatment of fish farming water for the characteristics of low-concentration organic pollution, and the water purification method using photocatalytic synergistic plants has not been reported yet.

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