Method for increasing humic acid content of compost through stage treatment

Abstract

The invention provides a method for increasing compost humic acid content through stage treatment, belongs to the technical field of solid organic waste treatment and resource utilization, and aims to pre-hydrolyze organic solid waste to be treated and destroy a lignocellulose crystal connection structure in the organic solid waste to be treated. According to the method, the lignocellulose efficient hydrolysis microbial inoculum is added before composting to promote hydrolysis of organic components, ventilation is stopped while a functional material is added in the high-temperature stage of composting, rapid condensation of a humic acid precursor compound is promoted to form humic acid, and a substrate is provided for humic acid formation; after ventilation is recovered, the functional material stimulates enzyme activity, and oxidative polymerization of the humic acid precursor is further accelerated. In the compost cooling period, mineral substances and metal ion oxides are added into the compost body, and formed humic acid molecules are protected against further hydrolysis by microorganisms.

Description

technical field

[0001] The invention relates to the technical field of solid organic waste treatment and resource utilization, in particular to a method for increasing the humic acid content of compost through stage treatment. Background technique

[0002] Large quantities of organic solid waste discarded carelessly are destroying soil fertility. Harmful by-products such as landfill leachate and odor can cause water eutrophication, air pollution, and even threaten human health. Composting, as a fast and safe way to recycle organic waste, is gaining more and more attention. At the same time, humic acid, as the most important by-product in the composting process, has a certain repairing effect on environmental pollution, and can improve soil fertility, promote crop growth, absorb heavy metals and organic dyes and other important functions. Therefore, in the face of a large amount of organic waste, increasing the production of humic acid during composting may be the best way ...