Base material improvement method for recovery of plant cover of wet-discharge coal ash yard

Abstract

The invention discloses a matrix improving method through which the vegetation in a wet fly ash yard is recovered, which belongs to an improved method of industrial solid waste; the invention is to provide a method for improving wet fly ash, so that the wet fly ash can adapt to the growth of plants. Straw stack retting and wormcast are mixed by the weight ratio of 1:1 to 1 and then added into polymer resin with 5 percent of weight, to obtain a water retaining modified material; the water retaining modified material with 5 percent to 40 percent of weight and the wet fly ash with 60 percent to 95 percent of weight are evenly mixed, to obtain the improved matrix; the improved matrix is spread on the surface of the wet fly ash; grass seeds are sowed on the improved matrix through a conventional greening method, and field management is conducted. The method of the invention can quickly recover the vegetation and effectively improve the ecological environment of the fly ash yards of sensitive areas, treats waste with waste, changes waste into valuable, has the advantages of low cost, good investment profit, etc. can not only be used for the greening of fly ash yards, but also be used as greening soil for mine rehabilitation or garbage landfill.

Description

Technical field: [0001] The invention relates to a method for improving industrial solid waste, in particular to a method for improving wet-discharged fly ash so that it can adapt to plant growth. Background technique: [0002] Fly ash is one of the main solid wastes in thermal power plants. Its main components are composed of incompletely burned substances in coal and non-volatile mineral elements in coal. The amount of fly ash generally accounts for 10% of the amount of coal burned. 50%. There are two ways to discharge fly ash in thermal power plants: one is to transport the fly ash to the designated ash yard by car for stacking, that is, dry ash; the other is to use hydraulic power to flush the fly ash to the ash yard for stacking , that is, wet ash discharge. At present, whether it is dry ash or wet ash discharge, the treatment of fly ash in my country is still mainly stacked in the open air in ash yards. Generally, every 10,000 tons of fly ash needs to occupy an area ...

AI Technical Summary

Problems solved by technology

The defect of method one is: a large amount of soil is needed, the engineering quantity is large, and the project cost is high; although method two is convenient and quick, the lawn survival rate is not high, and it needs manual maintenance frequently, and the project cost is also high; although method three has achieved The use of industrial waste residues to improve fly ash, but for fly ash dumps located in environmentally sensitive areas (such as fly ash dumps located in drinking water source protection areas), this method may cause serious damage to the area. new pollution

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