Remediation agent for improving soda-alkalized soil

Abstract

The invention discloses a remediation agent for improving soda-alkalized soil. The remediation agent is made from the following raw materials, by weight part, 25-27 of straw ash, 7-9 of peat powder, 1.7-2.0 of calcium nitrate, 6-7 of powdery flue-cured tobaccos, 2-3 of tourmalinite powder, 2.4-2.6 of sargassum thunbergii powder, 1.6-1.8 of polyferric sulfate, 74-76 of polluted pig dung and urine, 16-18 of a black liquor from papermaking, 4-5 of a nitric acid solution with the concentration being 10%, 14-15 of a thick alum liquid and a proper amount of water. According to characteristics of the soda-alkalized soil, the remediation agent contains multiple soluble components which can generate a large amount of cations through hydrolyzation during usage, and the cations can replace exchangeable sodium in the soil. Since the organic matters are good in adsorption and a polyhydroxyl complex is generated, colloid particles in the soil can be aggregated, thereby improving the physical and chemical properties of the soil, reducing the PH value of the soil, and improving the acid-base slow-release property of the soil. Therefore, the use value of the soil is increased.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a remediation agent for improving soda alkalized soil. Background technique [0002] Soil improvement is aimed at the poor texture and structure of the soil, and corresponding measures are taken to improve soil properties and soil fertility. Soil improvement and restoration agent is an important application of soil improvement. However, the soil remediation and improvement agents currently on the market have many defects: one is that the raw materials used contain artificially synthesized polymer compounds, which are not easy to decompose in the soil and remain for a long time, which has potential safety hazards; Soils, such as acidic and alkaline soils, have no effective targets for heavy metal pollution and nutrient deficiencies, resulting in low efficiency of improvement and restoration, or even counterproductive effects; third, the long cycle and high cost of soil im...

AI Technical Summary

Problems solved by technology

However, the soil remediation and improvement agents currently on the market have many defects: one is that the raw materials used contain artificially synthesized polymer compounds, which are not easy to decompose in the soil and remain for a long time, which has potential safety hazards; Soils, such as acidic and alkaline soils, have no effective targets for heavy metal pollution and lack of nutrients, resulting in low efficiency of improvement and restoration, or even counterproductive effects; third, the cycle of soil improvement is long and the cost is high, so it cannot be applied on a large scale

[0003] As a renewable biological resource with a wide range of sources and low cost, pig manure has great potential as a raw material for soil improvement and restoration because it is rich in organic matter and nutrients such as nitrogen, phosphorus, and potassium. The feed contains a large amount of additives during the process, resulting in excessive heavy metals and indirectly polluting the excrement