Method for producing coal ash compressed nutrient soil

Abstract

The invention discloses a method for producing coal ash compressed nutrient soil. According to key points of the technical scheme, the method comprises the following steps: acidizing coal ash and sludge, stirring, compressing and performing low-temperature microwave sterilization on ingredients of the coal ash compressed nutrient soil, and packaging to obtain the finished product. The coal ash compressed nutrient soil consists of acidized coal ash, acidized sludge, instant sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, high viscosity attapulgite clay, biogas slurry, crushed plant fibers, expanded perlite, super absorbent resin and other materials. The coal ash compressed nutrient soil contains lots of nitrogen, phosphorus, potassium, organic matters and multiple trace elements, can provide necessary nutrient elements for plant growth and reduce harm of pathogenic bacteria and injurious insects to plants and contributes to normal plant growth and development, the ecological environment is protected, secondary pollution to a surrounding environment is avoided, and the method for producing the coal ash compressed nutrient soil is suitable for producing coal ash compressed nutrient soil of different formulas.

Description

technical field [0001] The invention relates to nutrient soil, in particular to a production method of fly ash compressed nutrient soil. Background technique [0002] Fly ash is the fine ash collected from the flue gas after coal combustion. Fly ash is the main solid waste discharged from coal-fired power plants. Fly ash is one of the industrial waste residues with a large discharge in my country. With the development of the power industry, the discharge of fly ash from coal-fired power plants has increased year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; if it is discharged into the water system, it will cause river silting, and the toxic chemicals in it will also cause harm to human beings and organisms. [0003] Sludge is a kind of easily corrupt and smelly paste produced in the process of sewage treatment. It enriches the pollutants in sewage, contains a large amount of nutrients such as nitrogen and phosphorus,...

AI Technical Summary

Problems solved by technology

Generally, it is prepared by mixing fertile field soil and decomposed manure. There are also nutrient soils selected from imported high-quality peat and coconut bran mixed in a specific proportion. However, these nutrient soils have not undergone reasonable ingredients and strict disinfection. Conducive to the normal growth and development of seedlings

[0008] Because the treated nutrient soil is relatively light and loose, the conventional product of nutrient soil is relatively large, which is not conducive to reducing the cost of production and transportation