Method for treating soil and aquatic lead, zinc, cadmium pollution by cone south mustard

Abstract

A process for eliminating the pollution of Pb, Zn and Cd to said and water by use of arabis paniculata features that the Arabis paniculata is planted in the polluted sol or water for absorbing Pb, Zn and Cd. When their concentrations in the plant reach a certain value, the plant on the ground is cut out and its root is retained for growing the plant no the ground and further cutting it out.

Description

technical field [0001] The invention relates to a method for using Arabis Paniculata to remediate single or compound pollution of lead, zinc and cadmium in soil and water. Background technique [0002] Soil and water pollution with toxic heavy metals (lead, zinc, cadmium, etc.) poses a major environmental and human health concern. my country is rich in lead, zinc, and cadmium mineral resources. Due to the natural weathering of ore bodies rich in lead, zinc, and cadmium, the corresponding open-pit mining, smelting and other mining activities, as well as the extensive use of chemical fertilizers, pesticides and other chemical products, my country's large-scale Heavy metals such as lead, zinc, and cadmium pollute the soil and water bodies of the entire area, especially in areas around mines and smelters. Excessive exposure of lead, zinc, and cadmium directly threatens the living environment and food safety. The above three metals, which are ingested in large quantities through ...

AI Technical Summary

Problems solved by technology

[0007] Judging from the current research and practical progress of plant extraction technology at home and abroad, the following problems still exist and need to be solved: (1) There are few plant species that can be selected to enrich heavy metals lead, zinc and cadmium, especially those that can enrich heavy metals at the same time. There are very few plants with more than two kinds of metals; (2) hyperaccumulators, which are recommended for priority use, generally have low biomass, low overall removal efficiency of heavy metals, and there are also problems such as climate adaptation in different places; (3) ) The bioavailability of heavy metals in contaminated soil needs to be improved; (4) In terms of application, some phytoremediation technologies in developed countries have been put into practical application and have achieved good environmental, economic and social benefits, while my country has not It is in its infancy, and related technologies are still in the laboratory or pilot stage