Environmental-friendly solid fuel manufactured by municipal solid waste without manual classification and manufacturing method thereof

Abstract

The invention discloses solid fuel manufactured by municipal solid wastes without manual classification. The solid fuel is manufactured by the following components in percentage by weight: 75%-85% of treated municipal solid wastes, 2%-7% of coal dust containing fixed carbon and 10%-20% of mixed additives. The invention aims at overcoming the defects in the prior art and increasing a novel treatment technology taking a biotechnology as a main technology to carry out advanced treatment on the municipal solid wastes, thereby providing the solid fuel which turns wastes into useful things by taking the municipal solid wastes as raw materials, has low production cost and little pollution, is beneficial to the environmental protection and has high combustion efficiency; and in addition, the invention has an other purpose of additionally providing a method which has simple process and environmental protection and is used for producing the solid fuel for changing a biochemical treatment methodof percolate generated in the wastes treatment process, wherein the biochemical treatment method has high production cost.

Description

technical field [0001] The invention relates to a solid fuel made from urban living garbage, and also relates to a method for preparing the solid fuel. Background technique [0002] my country has a population of 1.3 billion. With the continuous growth of per capita GDP and resident consumption expenditure TCE, the per capita garbage production in cities and towns across the country has reached 1.2kg / person day, and will continue to grow at a rate of 5% to 8% per year. The average annual volume of garbage removal in my country has reached 250 million tons, and the accumulated garbage over the years has reached 8 billion tons. [0003] The components and physical and chemical properties of domestic waste in my country are directly related to people's living standards, living habits, climate conditions, energy structure, per capita GDP and other characteristics. Studies have shown that domestic waste in my country is currently at a level between low-income countries and middl...

AI Technical Summary

Problems solved by technology

For example, the investment cost and operating cost are high, and Western developed countries still have a certain ability to bear it. However, to implement this technology in China, the government needs to subsidize a large amount of enterprises to survive. It has a great influence on the working conditions of the operation, and it is difficult to control the pollutants (this series of problems are especially prominent in our country)

[0005] my country's municipal solid waste treatment mainly adopts (1) landfill method, which wastes energy, occupies a large area, and causes secondary pollution, which has a great impact on the environment around the garbage site and people's health

(2) Garbage incineration method, incineration power generation investment is large, the calorific value of waste in my country's cities is low, the quality is poor, the economic benefit is poor when generating power, and the exhaust gas contains dioxins, causing serious environmental pollution

(3) Composting method, because the plastic bags used by the people to load kitchen waste are made of recycled plastics, which contain a large amount of toxic substances, the fertilizers produced contain toxins, and the use of fertilizers for planting plants will also cause serious pollution, which is harmful to the people Good health, the composting method takes a long time to ferment, the amount of garbage used is very small, and the economic benefit is also very low

Farmers dare not use the waste fertilizer produced, and there is no market

[0006] However, the technology of using urban waste as raw material to prepare solid fuel is not perfect at present. The quality of the general products is poor, the pollution is large, and the production method is complicated.