Photocatalytic-oxidation biological floating bed algae removing device

Abstract

The present invention provides a photocatalytic-oxidation biological floating bed algae removing device, comprising a photocatalytic oxidation device, a floating body and a biological floating bed. The photocatalytic oxidation device is mounted on a light corrosion-resistant frame; left and right sides of the photocatalytic oxidation device are connected with the floating body; the front sides ofthe left and right floating body and the front side of the photocatalytic oxidation device are connected with the biological floating bed; symmetrically, the back sides of the left and right floatingbody and the back side of the photocatalytic oxidation device are also connected with the biological floating bed. The photocatalytic-oxidation biological floating bed algae removing device makes full use of the advantages of two technologies of photocatalytic oxidation technology and the biological floating bed technology so that in one aspect, the weak defect of the photocatalytic oxidation technology in removing organic substances and nitrogen and phosphorus is made up by the biological floating bed; in another aspect, the algae, bacteria are removed by the photocatalytic oxidation technology and the persistent organic substances in water are decomposed. The device is an integration of algae removal, sterilization, denitrification, phosphorus removal and the like so that the processed eutrophic water can be treated completely.

Description

technical field [0001] The invention relates to a photocatalytic oxidation-biological floating bed algae removal device for treating eutrophic water body, which belongs to the technical field of environmental protection engineering and water treatment. Background technique [0002] For a long time, the nitrogen and phosphorus in lakes and rivers have exceeded the standard, leading to the excessive reproduction of blue-green algae, which has plagued the work of water pollution control. With the development of the economy, the excessive discharge of a large amount of industrial wastewater and domestic sewage organic pollutants has led to excessively high content of nutrients such as total nitrogen and total phosphorus in lakes and other water bodies, exceeding the self-purification capacity of lakes, causing algae to multiply and destroy The original ecological balance reduces the use function of the water body. [0003] There are many ways to control eutrophication, mainly i...

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Problems solved by technology

[0002] For a long time, the nitrogen and phosphorus in lakes and rivers have exceeded the standard, leading to the excessive reproduction of blue-green algae, which has plagued the work of water pollution control

With the development of the economy, the excessive discharge of a large amount of industrial wastewater and domestic sewage organic pollutants has led to excessively high content of nutrients such as total nitrogen and total phosphorus in lakes and other water bodies, exceeding the self-purification capacity of lakes, causing algae to multiply and destroy The original ecological balance reduces the use function of water body

[0003] There are many ways to control eutrophication, mainly including: (1) Physical methods: such as filter algae removal, clay algae removal, air flotation algae removal, water change / dilution, dredging, mechanical algae harvesting, etc., with large investment and high operating costs , sometimes the efficiency is not good; (2) chemical method: such as chlorine algae removal, ozone algae removal, potassium permanganate algae removal, etc., this method has secondary pollution problems; (3) biological-ecological method: such as aquatic plant restoration technology , aquatic animal restoration technology, biofilm technology, etc., are more suitable for the prevention of eutrophication, because biological growth has certain requirements on the external environment, when the external environmental conditions change, it will inevitably affect its treatment effect

The use of nano-photocatalytic technology to control water pollution is a new field of sewage treatment in recent years. Photocatalytic reaction has a strong sterilization and disinfection effect, can decompose algae toxins, decompose organic pollutants, and has a strong killing effect on algae. The effect of nitrogen and phosphorus removal is not ideal, if combined with bio-ecological technology, satisfactory treatment effect will be obtained

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