A kind of soil treatment solution for controlling heavy metals in polluted soil in ecological garden

Abstract

The invention provides a soil treatment fluid for treating heavy metals in polluted soil in ecological gardens. The soil treatment fluid contains 2-oxo-1,3-imidazoline bis(dithioformic acid) as an active component. The soil treatment fluid disclosed by the invention can remove heavy metals in polluted soil and can also avoid loss of nutrient elements in the soil. According to the method, 2-oxo-1,3-imidazoline bis(dithioformic acid) with multiple coordination sites and multiple coordination modes is selected as an eluting agent, and the eluting agent has extremely high adsorption capacity on heavy metals, but is relatively weak in bonding with metals such as Mg and Ca.

Description

technical field [0001] The invention belongs to the technical field of heavy metal treatment in garden soil, and in particular relates to a soil treatment solution for treating heavy metal in polluted soil in ecological gardens. Background technique [0002] Current statistics show that the country's soil pollution is serious, and soil pollution is dominated by inorganic pollution, of which heavy metal pollution accounts for more than 80%. In the construction of ecological gardens, in order to ensure the normal growth of plants and human health, it is necessary to treat polluted soil to remove heavy metals and other pollution. Traditional soil remediation methods include physical remediation, chemical remediation, biological remediation and soil leaching. The soil leaching method has high efficiency and can fundamentally remove heavy metals. The key to the leaching method is the choice of leaching agent. [0003] The leaching agent mainly includes inorganic acids, inorganic...

AI Technical Summary

Problems solved by technology

However, the currently used chelating agents remove heavy metal ions and also chelate other nutrients in the soil, such as Mg, Ca, etc., which causes nutrient loss