Ecological floating bed based on molecularly imprinted material and application of ecological floating bed in targeted degradation of emerging pollutants in polluted water

Abstract

The invention discloses an ecological floating bed based on a molecularly imprinted material and application of the ecological floating bed in targeted degradation of emerging pollutants in polluted water. The ecological floating bed based on the molecularly imprinted material structurally comprises a floating plate, a plurality of hollowed-out planting baskets, culture media, emergent aquatic plants and a plurality of biological ropes, wherein the bottom ends of the hollowed-out planting baskets penetrate through holes in the floating plate, and the hollowed-out planting baskets are fixed in the holes; the culture media are arranged in the hollowed-out planting baskets; the emergent aquatic plants are planted in the culture media; one end of thebiological rope is connected with the bottom of thehollowed-out planting basket; the culture medium is prepared from ceramsite, activated sludge and a molecularly imprinted material, the molecularly imprinted material is obtained by carrying out pyrolysis and surface molecular imprinting on a Cu-Mn-Fe trimetal organic framework material. The ecological floating bed based on the molecularly imprinted material not only can remove conventional pollutants in a polluted water body, but also can degrade ECs in the polluted water body in a targeted manner, has very high catalytic performance and water stability, and has a very good application prospect in the aspect of river regulation.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an ecological floating bed based on molecularly imprinted materials and its application for targeted degradation of emerging pollutants in polluted water. Background technique [0002] In recent years, the world economy has developed rapidly, but the construction of the sewage treatment system has not kept up with the pace of urbanization, causing a large amount of pollutants to be discharged into the river, and the chemical oxygen demand, nitrogen, phosphorus and other pollutants in the water body exceed the standard. Severe pollution has caused river water bodies to lose their functions of self-purification, drinking, irrigation, and landscape, destroying ecological balance, causing sanitation problems, and endangering human health. It has become an environmental problem that needs to be solved urgently. [0003] At present, water treatment methods mainly include physi...

AI Technical Summary

Problems solved by technology

However, the traditional ecological floating bed has the following defects: 1) remove conventional pollutants (such as: COD, NH 3 -N, TN, TP, etc.) have limited ability; 2) lack of ability to remove emerging pollutants ECs (a class of organic pollutants that can remain in the environmental medium for a long time, have bioaccumulation, and cause adverse effects on human health and the ecological environment. Pollutants) research

MOFs can adsorb and effectively degrade ECs by activating persulfate to generate sulfate radicals, but MOFs activate persulfate to degrade ECs with the following defects: 1) The efficiency of MOFs to degrade ECs in water is limited and needs to be further improved; 2) Free While oxidizing and degrading ECs, radicals will also affect the structure of MOFs to a certain extent, and water molecules will also affect the structural stability of MOFs; 3) free radicals have no selectivity, and the mass transfer distance is relatively long, so their utilization rate is relatively low. Low

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