Urban garbage purifying utilizing system and garbage processing method

Abstract

The invention provides an urban garbage purifying utilizing system and a garbage processing method. The urban garbage purifying utilizing system comprises a pre-processing system, a resolving system, a heat processing system and a purifying system. The pre-processing system is used for separating scrap iron, special-shaped objects and stones out, and used for separating waste paper and plastic bags; the heat processing system comprises an incinerator and a heat energy recycle device, and the heat energy recycle device is used for recycling heat energy generated by the incinerator and supplying the heat energy for the resolving system; the resolving system comprises a refining device used for refining garbage and a resolving disinfection device used for resolving and disinfecting garbage; the purifying system comprises a smoke purifying unit used for purifying smoke generated by the heat processing system and the resolving system. According to the urban garbage purifying utilizing system, based on an urban garbage processing method, a mechanical classifying function and a scientific processing method are added, processing cost is lowered, and the internal structure of purifying equipment is simplified, so that the purifying equipment is easy to manufacture and convenient to implement, the equipment failure rate is lowered, occupied land is reduced, and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the field of urban garbage treatment systems, and more specifically, relates to an urban garbage purification and utilization system and a garbage treatment method. Background technique [0002] With the rapid development of China's economy, the number of cities and population have increased significantly, and the scale and scope of cities have continued to expand. Especially with the acceleration of urbanization, the output of municipal solid waste is constantly increasing; in recent years, the annual growth rate of municipal solid waste has reached 5%-8%; in 2001 alone, the volume of urban solid waste removal in China was nearly 140 million tons . According to statistics, since 1979, the amount of urban domestic waste removal and transportation in my country has experienced a stage of rapid growth. Until 1995, the average annual growth rate was 8.98%, from 31.32 million tons in 1980 to 107.48 million tons in 1995. In recen...

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Problems solved by technology

[0010] ①. Waste paper mainly includes newspapers, periodicals, books, various packaging papers, office paper, advertising paper, cartons, etc. It is worth noting that paper towels and toilet paper are not recyclable due to their strong water solubility

[0031] The method of pure incineration has certain difficulties for household garbage, because the ignition point of household garbage is very low, and the water content is relatively large, and the types are various; therefore, it is necessary to add combustion accelerants, such as waste oil and natural gas; Increased processing costs, and will increase the investment in flue gas purification equipment, because the release of toxic substances such as dioxins will be produced in the flue gas here, which will lead to secondary pollution of the environment;

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