Arsenic-polluted soil remediation fertilizer

Abstract

The invention relates to the technical field of fertilizers and particularly relates to an arsenic-polluted soil remediation fertilizer which consists of the following raw materials in parts by weight: 40-50 parts of urea, 15-30 parts of urea phosphate, 20-40 parts of potassium sulfate, 14-19 parts of sodium nitrate, 10-15 parts of decomposed coal, 6-9 parts of tobaccos, 8-12 parts of ardealite powder, 8-15 parts of polyaluminum chloride and 25-30 parts of a soil improver. The fertilizer contains rich nutrients, and the total content of nutrients, namely nitrogen, phosphorus and potassium, is greater than or equal to 55%; the fertilizer provided by the invention can effectively reduce the activity of metal ions in soil to change the form of heavy metals in soil; and with the conversion rate of an effective state into an ineffective state as an evaluation index for soil remediation, the conversion rate of arsenic metal in soil exceeds 84.9%.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a fertilizer for repairing arsenic-contaminated soil. Background technique [0002] With the rapid development of the economy and the advancement of industrial technology, the adverse impacts of industrial and agricultural production on the environment have been increasing. Due to the continuous accumulation and dumping of solid waste on the soil surface, harmful waste water has continuously penetrated into the soil, harmful gases and dust in the atmosphere It also continuously falls into the soil with rainwater, causing soil pollution, which not only reduces the yield and quality of crops, but also indirectly endangers human health. Among them, arsenic is one of the common heavy metal pollution elements in the soil. Excessive arsenic in the soil can have adverse effects on plant growth. At the same time, it can also accumulate in plants through plant roots and enter the huma...

AI Technical Summary

Problems solved by technology

[0003] Since crops began to use chemical fertilizers, they are rich in nutrients such as N, P, and K, such as urea phosphate, urea urea phosphate, urea nitrate phosphate, potassium urea phosphate, etc., which have a significant effect on increasing crop production. However, due to the discharge of pollution sources, the environment The deterioration of the soil caused the heavy metal content in the soil to exceed the standard, and the pollution of the soil became increasingly serious, which greatly reduced the absorption and utilization of fertilizers by crops, and reduced the utilization rate of fertilizers. At the same time, crops grown under heavy metal pollution have great food Safety, therefore, in the current high-efficiency and rapid development, it is the current trend of agricultural development to develop a nutrient-rich fertilizer that not only contains the nutrients necessary for crop growth, but also can effectively restore soil heavy metals. Planting healthy and safe crops, and at the same time, improving the soil, reducing pollution, and achieving the dual benefits of high yield and heavy metal removal have become the focus of research in the planting and fertilizer industries. For this reason, The present inventor provides a fertilizer with multiple functions of high yield and reducing arsenic content for arsenic-contaminated soil, which has extremely high economic and social significance, and provides an effective way for the repair of soil pollution and the treatment of heavy metals

Images