Efficient soil remediation agent and preparing method thereof

Abstract

The invention provides an efficient soil remediation agent and a preparing method thereof. The efficient soil remediation agent is prepared from, by weight, 30-40% of animal bone meal, 10-20% of animal blood meal, 1-5% of ferrous sulfate, 5-11% of syrup, 3-7% of medical stone, 3-7% of rice chaff ash, 11-15% of humic acid, 10-16% of bentonite, 0.3% of a chelating agent and 0.7% of a microbial strain. In the using process, the soil remediation agent can adjust soil acidity, reduce heavy metal pollution, effectively restrain vicious circle caused by soil deterioration, kill harmful bacteria and nematode in soil and has the functions of activating soil, improving soil quality and supplementing nutrition needed by organisms and the like.

Description

technical field [0001] The invention relates to the field of soil restoration, in particular to a high-efficiency soil restoration agent and a preparation method thereof. Background technique [0002] With the development of industry and agriculture, soil resources are under increasing pressure. The use of a large amount of chemical fertilizers and pesticides, as well as various heavy metals and radioactive pollution, has caused long-term accumulation of various pollutants in the soil, resulting in reduced crop production and lower quality of agricultural products. Groundwater and surface water cause secondary pollution, and enter the human body through the food chain through drinking water or soil-plant systems, thereby endangering human health. [0003] Fundamentally speaking, the technical principles of contaminated soil remediation can include: (1) changing the form of pollutants in the soil or the way they combine with the soil to reduce their mobility and bioavailabili...

AI Technical Summary

Problems solved by technology

The research on the remediation technology of polluted soil has become the focus of environmental protection engineering science and technology research. Recently, China University of Geosciences (Wuhan) and the Institute of Agricultural Environment and Sustainable Development of the Chinese Academy of Agricultural Sciences jointly developed "new magnetic solid chelating agent material technology ", this technology relies on the results of the adsorption principle of inorganic-organic hybrid composite water-retaining agent in the "Twelfth Five-Year Plan" National 863 Plan. Although the purification and repair process of new materials has little disturbance to soil chemistry, the magnetic solid chelating agent granular material can "target chelate blunt The harmful heavy metals in the soil can be reduced to reduce the absorption of planting crops, and the magnetic materials loaded with heavy metals can be quickly separated from the soil by magnetic separation during fallow and slack, so that the heavy metals in the soil can be "removed and reduced" and purified, and the heavy metals can be directly eliminated Pollution hazards are reactivated by soil organisms or other reasons, the materials can be recycled and used, and the cost of 0 tons of soil treatment materials can be as low as 2-10 yuan / element; however, it does have its shortcomings: the material and The method cannot remove all harmful elements and substances in the soil. For example, whether the residues of organic pesticides and fertilizer damage may be unknown; Otherwise, it will be difficult for the vast soil restoration in our country, and at the same time increase the final cost of agricultural products