Fertilizer soil activating agent and method for repairing heavy metal polluted soil

Abstract

The invention discloses a fertilizer soil activating agent and a method for repairing heavy metal polluted soil. The fertilizer soil activating agent comprises ammonium triphosphate and fulvic acid, and the mass ratio of the two is 0.5-1: 0.25-0.5. The method for repairing the heavy metal polluted soil comprises the step of applying the fertilizer soil activating agent in the repair process of theheavy metal polluted soil. The fertilizer soil activating agent has the advantages of high heavy metal dissolving capacity, capability of accelerating the plant growth, capability of prominently improving the capacity of plants absorbing and enriching multiple heavy metal, low cost, reasonable matching of nutrient components, good economical benefit and the like, is a novel soil activating agent,and achieves excellent application value and application prospect. The method for repairing the heavy metal polluted soil by using the fertilizer soil activating agent has the advantages of simple operation, low cost, high economical benefit, good repair effect and the like, and can efficiently and quickly repair the heavy metal polluted soil.

Description

technical field [0001] The invention belongs to the technical field of phytoremediation of polluted environment, and relates to a fertilizer type soil activator and a method for remediating heavy metal polluted soil. Background technique [0002] With the development of industry, urban pollution has intensified, and with the continuous progress of agricultural production, heavy metals accompanied by foreign organic compounds have become increasingly serious soil pollution. At present, there are different degrees of heavy metal pollution in the soil of various countries in the world. The average annual global emission of Hg is about 15,000 tons, Cu is 3.4 million tons, Pb is 5 million tons, Mn is 15 million tons, and Ni is 1 million tons. Heavy metal pollution will lead to soil degradation, while reducing the yield and quality of crops, and heavy metals will enter surface water and groundwater through runoff and leaching with rainwater and sediment, causing heavy metal pollut...

AI Technical Summary

Problems solved by technology

However, the hyperaccumulator plants used in existing phytoremediation techniques have the following problems: limited by seasons, poor growth; low biomass in the aboveground parts; less total amount of heavy metals absorbed and accumulated; only resistant to and enriched for a single heavy metal; remediation The obtained plants can only be incinerated, have no reuse value, and have poor economic benefits; the overall effect of practical application is poor, etc. These problems seriously limit the wide application of phytoremediation technology in remediation of heavy metal contaminated soil

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