A kind of photocatalysis and biological purification integrated ecological bank protection block and preparation method thereof

Abstract

The invention discloses a photocatalysis and biological purification integrated type ecological revetment building block. The photocatalysis and biological purification integrated type ecological revetment building block comprises a photocatalysis water permeable layer, a biological attachment water permeable layer and a water permeable base body layer which are fixedly connected end to end in sequence from top to bottom; the surface of the photocatalysis water permeable layer is wrapped by a nanocrystalline titanium dioxide photocatalysis thin film layer; the surface of the biological attachment water permeable layer is wrapped by a concrete layer; and a plurality of penetrating type water permeable holes are vertically formed in the water permeable base body layer. A three-layer type structure is adopted for the photocatalysis and biological purification integrated type ecological revetment building block, the surface photocatalysis water permeable layer has good structural strengthand erosion resistance, and under light ray irradiating, and organic pollutants difficult to degrade in water can be subjected to photocatalysis degrading; the middle biological attachment water permeable layer has a large specific surface area and surface roughness, and load growing of microorganisms and degrading removing of N, P and other pollutants are facilitated without direct illuminating of sunlight; and the bottom water permeable base body layer has very good structural strength, and high stability and durability in the service process of the building block can be guaranteed.

Description

technical field [0001] The invention relates to an ecological revetment block integrated with photocatalysis and biological purification and a preparation method of an ecological revetment block integrated with photocatalysis and biological purification, belonging to the technical field of environmental protection. Background technique [0002] The progress of human industrialization has brought us economic benefits, but it has also caused serious damage to the environment. The discharge of domestic and industrial sewage has risen rapidly, and a large amount of untreated or incompletely treated sewage has been directly discharged into rivers, lakes and other water bodies. , leading to the overall deterioration of the water quality of rivers and lakes. Industrial wastewater has the characteristics of many types of pollution, complex components, and poor biodegradability. Excessive application of chemical fertilizers and spraying of highly toxic and high-residual pesticides, w...

AI Technical Summary

Problems solved by technology

However, traditional bank revetment blocks are mainly made of cement and gravel, with smooth and impermeable surfaces, and only have the function of maintaining the stability of the bank revetment structure, and do not have the function of water purification

At the same time, the all-hard structure of the traditional revetment isolates the ecological connection between the water body and the soil, which seriously affects the ecological continuity and stability around the water area.

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