Urban organic waste pyrolytic biochar, soil conditioner and use method of soil conditioner

Abstract

The invention discloses urban organic waste pyrolytic biochar, a soil conditioner and a use method of the soil conditioner. Paper waste, rubber and plastic waste, fabric waste, bamboo waste and kitchen waste of urban organic waste are selected as raw materials, the raw materials including, in parts by weight, 1-1.5 parts of paper waste, 2-2.5 parts of rubber and plastic waste, 0.5-1 part of fabric waste, 0.5-1 part of bamboo waste and 5-5.5 parts of kitchen waste are uniformly mixed, inorganic components are removed, dried and smashed and subjected to high-temperature pyrolysis, and the urban organic waste pyrolytic biochar is obtained. According to the soil conditioner, the urban organic waste pyrolytic biochar is taken as an effective ingredient and added to the soil during use in the mass ratio being 2%-4%. The urban organic waste pyrolytic biochar has the characteristics of rich sources of the raw materials, low cost and simple process; the urban and rural environments can be improved, and reduction, reutilization and harmless utilization of urban organic waste are realized; besides, nitrogen cycle of soil can be accelerated, and a theoretical direction is provided for improvement of the agricultural soil environment.

Description

technical field [0001] The invention belongs to the technical field of solid waste treatment, and in particular relates to pyrolysis biochar of urban organic waste, a soil improver and a use method thereof. Background technique [0002] At present, the harmless treatment methods of garbage widely used at home and abroad mainly include incineration, landfill and composting. However, traditional treatment methods have problems such as large land occupation, large amount of methane gas generation, groundwater and soil pollution, and cannot reduce carbon emissions. [0003] There are serious environmental problems in my country's agricultural soil. On the one hand, soil nutrients are seriously lost, causing serious pollution. On the other hand, farmland emits a lot of greenhouse gases. Urban organic waste, as an important biomass resource, is a possible way for soil improvement. Chen Jinhai and others have developed a method of mixing and composting Spartina alterniflora and...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a kind of urban organic waste pyrolysis biochar, so as to realize that paper, rubber and plastic, fabric, bamboo and wood and kitchen waste can be used Urban organic waste pyrolysis biochar is prepared by urban organic waste, and the prepared biochar has high carbon content, large surface area, small bulk density, rich pore structure, good water permeability and ventilation performance, and a large amount of biochar. Negative surface charge and high charge density, and biochemical stability, not easy to be decomposed by microorganisms