Field reinforced rhizo-remediation method for soil polluted by decabromodiphenyl oxide at circumference of electronic waste disassembling place

Abstract

The invention discloses a field reinforced rhizo-remediation method for soil polluted by decabromodiphenyl oxide at circumference of electronic waste disassembling place. The method comprises the following steps: fertilizing and moisture adjustment; crop rotation of paddy rice and ryegrass is carried out on the soil to be restored which is polluted by decabromodiphenyl oxide; after paddy rice is mature and harvested, ryegrass is cultivated, and plantation of the rye grass comprises the following steps: rye grass seeds are sown, and mycorrhizal fungi whole culture is uniformly mixed and sown in field plots; and / or a degrading microbial agent is sprayed during the rye grass plantation period; the mycorrhizal fungi whole culture is arbuscular mycorrhizal fungi Glomus mosseae whole culture, and the degrading microbial agent is a composition of Cupriavidus sp.WS and Ochrobactrum sp.FZ.

Description

technical field [0001] The invention relates to a field in-situ enhanced rhizosphere restoration technology for decabromodiphenyl ether-contaminated soil around an electronic waste dismantling site (for example, Taizhou electronic waste dismantling site). Background technique [0002] my country is one of the largest e-waste disposal countries in the world. The primitive and extensive dismantling of e-waste has caused serious environmental pollution in major e-waste collection and distribution areas for a long time. Polybrominated diphenyl ethers (Polybrominated Diphenyl Ethers, PBDEs) have been widely used in the production of daily electrical appliances since the 1960s due to their excellent flame retardancy, good thermal stability, and low cost of use. Its industrial products mainly include: pentabromodiphenyl ether, octabromodiphenyl ether and decabromodiphenyl ether. Pentabromodiphenyl ether and octabromodiphenyl ether have been banned in developed countries such as th...

AI Technical Summary

Problems solved by technology

[0006] On the one hand, the bioremediation technology of polybrominated diphenyl ethers is not completely clear because of its degradation pathway and metabolite formation mechanism, the main participating microbial genus and kinetic research, which limits the development of applied research

On the other hand, the lack of functional microbial strains for degrading PBDEs is still the biggest bottleneck in the research of bioremediation technology

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