Soil conditioner for remediating nickel pollution of soil, and preparation method and use method of soil conditioner

Abstract

The invention discloses a soil conditioner for repairing nickel pollution of soil. The soil conditioner is prepared from the following raw materials in parts by weight: 1.0 to 3.0 parts of iron phosphate, 0.5 to 3.5 parts of manganese sulfate, 0.5 to 5.5 parts of ammonium hydroxide, 1.5 to 7.5 parts of a chelating agent, 2 to 8 parts of isoleucine and 3.0 to 10.0 parts of rhizobium. The inventionalso discloses a preparation method and a use method of the soil conditioner. The prepared soil conditioner is excellent in permeability, water retention capacity and nutrient supply capacity, can effectively maintain the activity of the rhizobium and reduce the activity of nickel in soil, and enables the range of nickel-contaminated soil to not be further expanded; and the soil conditioner has the characteristics that the raw materials are easy to obtain, production cost is low, performance is stable, the nickel-contaminated soil can be remediated in a short time, soil fertility is improved,remediation efficiency is high, secondary pollution is avoided, and remediated soil can be directly used for agricultural planting.

Description

technical field [0001] The invention belongs to the technical field of ecology and environmental protection, and in particular relates to a soil conditioner for repairing soil nickel pollution, a preparation method and a use method thereof. Background technique [0002] Soil refers to the loose surface layer on the land surface that is fertile and capable of growing plants, and its thickness is generally about 2 m. Soil not only provides mechanical support for plant growth, but also provides fertility elements such as water, fertilizer, air, and heat for plant growth and development. Due to the rapid growth of population and the rapid development of industry, solid wastes are continuously stacked and dumped on the soil surface, harmful waste water is continuously infiltrated into the soil, and harmful gases and floating dust in the atmosphere are also continuously falling into the soil with rainwater, resulting in soil pollution. All substances that hinder the normal functi...

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Problems solved by technology

This soil remediation method is suitable for remediation of heavy metal-contaminated soil, and has the advantages of low cost. However, the soil treated by the above-mentioned patent is only effective for cadmium, and it is difficult to meet the status quo of other heavy metal pollution in the soil. There are also various difficulties in promoting the use of

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