Remediation method for soil contaminated by heavy metal

A technology of polluted soil and remediation method, applied in the restoration of polluted soil, etc., can solve the problems of difficult to dispose of harvested plants containing pollutants, long repair time, seasonality, etc., and achieve the effect of high phytoremediation efficiency
CN103480641AInactive Publication Date: 2014-01-01FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a remediation method for soil contaminated by heavy metal. Paddy rice is planted in soil contaminated by both cadmium and copper, a carbon dioxide fertilizer is applied to enable the carbon dioxide concentration of local atmosphere to rise, the condition for increasing the carbon dioxide concentration is open-top phytotron, carbon dioxide rises to 860+/-50 [mu] l l<-1>, the paddy rice is Rongyou 398, Shanyou 428, Yueza 889, Tianyou 390, Guinongzhan or Yinjingruanzhan. The remediation method has the remarkable advantage that the plant remediation efficiency is high.
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Description

[0001] Technical field:

[0002] The invention relates to a method for treating soil pollution, in particular to a method for repairing heavy metal polluted soil. Background technique:

[0003] Due to the intensification of industrial pollution and the increase in the types and quantities of farmland chemical substances, soil heavy metal pollution is becoming more and more serious. Among them, 30% of the farmland is polluted by heavy metals (partition, mercury, lead, copper) to varying degrees, resulting in tens of millions of tons of grain. production cuts. Heavy metals are hidden, hysteresis, accumulative, irreversible, insoluble and harmful in soil. It not only endangers the growth and development of plants, but also threatens ecological security, affects the quality of agricultural products, and endangers human health and life through the food chain.

[0004] Conventional methods currently used to treat heavy metal-contaminated soils include physical methods, chemical...

Claims

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