Method for producing red mud compressed nutrient soil

Abstract

The invention discloses a method for producing red mud compressed nutrient soil. According to the technical scheme, the method comprises the following steps of firstly acidifying red mud and sludge, and then stirring ingredients of the red mud compressed nutrient soil, compressing, carrying out microwave low temperature sterilization and packaging to obtain the finished product. The red mud compressed nutrient soil comprises acidified red mud, acidified sludge, instant-soluble sodium silicate, polyvinyl alcohol, ferrous sulfate, peat, flower ceramsite, high-viscosity attapulgite clay, biogas slurry, biogas slag, crushed plant fibers, expanded vermiculite, expanded perlite and super absorbent resin. Since the red mud compressed nutrient soil contains a large amount of nitrogen, phosphorus, potassium, organic matter and a plurality of trace elements, the red mud compressed nutrient soil can provide nutrients necessary for the growth of plants, harms of pathogens and pests to plants are reduced, and red mud compressed nutrient soil is conducive to the normal growth and development of plants, the ecological environment is protected, the secondary pollution to the surrounding environment is avoided and the method for producing red mud compressed nutrient soil is suitable for producing red mud compressed nutritive soil with different formulas.

Description

Technical field [0001] The invention relates to nutrient soil, in particular to a production method of red mud compressed nutrient soil. Background technique [0002] Red mud is the polluting waste discharged during the extraction of alumina in the aluminum industry. Generally, for every 1 ton of alumina produced, 1.0 to 2.0 tons of red mud are incidentally produced. The pH of red mud is 10-12. As the world's fourth largest alumina producer, China emits millions of tons of red mud every year. A large amount of red mud cannot be fully and effectively used. It can only rely on large-area storage yards and occupy a large amount of land. The production of red mud has already caused many direct and indirect impacts on human production and life, so the maximum It is extremely urgent to reduce the production and harm of red mud, and realize multi-channel and large-scale resource utilization. [0003] Sludge is a kind of paste produced in the process of sewage treatment that is easy to p...

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 di