Biological carbon and biological humic acid compounded soil conditioner preparation method

Abstract

The invention discloses a biological carbon and biological humic acid compounded soil conditioner preparation method. The method includes: adopting excess sludge in sewage plants and tea dregs for preparing biological carbon according to a pyrolysis method, adopting composite strains for fermenting bagasse to obtain biological humic acid, compounding the biological carbon and the biological humic acid through a series of technical steps to obtain a soil conditioner, wherein the soil conditioner has certain water solubility and is capable of precipitating and adsorbing heavy metal ions in soil to realize soil improvement through ion exchange. The method is low in cost, dealing with wastes by wastes is realized by adoption of wastes as main raw materials, convenience in technical control is achieved, high product bioactivity, freeness of environmental secondary pollution and worthiness of popularization are realized.

Description

technical field

[0001] The invention relates to the technical field of soil improvers, in particular to a preparation method of a biochar biohumic acid composite soil improver. Background technique

[0002] With the development of industry and commerce and the increase of population, the deterioration of the ecological environment caused by human activities has become more and more serious. Among them, the problem of soil heavy metal pollution is particularly prominent. Soil heavy metal pollution refers to the phenomenon that due to human activities, the content of heavy metals in the soil is significantly higher than that in its natural state, and the quality of the ecological environment deteriorates. Heavy metals exist in different chemical forms in the soil, can accumulate and migrate in the soil, and accumulate in crops, directly or indirectly affecting human health. It can be seen that soil heavy metal pollution has become the main problem to be solved urgently. [0...