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Integral treatment method for city household refuse

A technology of municipal solid waste and its disposal method, which is applied in the field of comprehensive disposal of municipal solid waste, can solve problems such as decline and less landfill sites, and achieve the effects of high economic value, high degree of harmlessness, and high degree of reduction

Inactive Publication Date: 2008-10-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although landfill treatment has the characteristics of simple operation equipment, strong adaptability and flexibility, there are fewer and

Method used

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  • Integral treatment method for city household refuse
  • Integral treatment method for city household refuse
  • Integral treatment method for city household refuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, a kind of municipal solid waste comprehensive disposal method, such as figure 1 As shown, it includes ten steps: pre-sorting, rapid biological fermentation treatment, secondary sorting, post-ripening composting treatment, fertilizer treatment, wastewater treatment, waste gas treatment, waste plastics treatment, brick-making treatment and thermal energy conversion treatment. . The method specifically carries out the following steps in sequence:

[0043] 1. Pre-sorting:

[0044] process such as figure 2 Shown:

[0045] Raw garbage (mixed garbage) enters the anti-seepage inclined discharge storage bin after being measured, and sprays deodorant liquid and mosquito and fly liquid on the raw waste. Generally speaking, the amount of deodorant liquid is 0.1% of the total weight of the raw waste. ~0.5%, the consumption of liquid for removing mosquitoes and flies is 0.1~0.5% of the total weight of primary garbage.

[0046] The raw garbage after the above treat...

Embodiment 2

[0110] Embodiment 2, adopt the method described in embodiment 1 to process Zhejiang Yuhuan municipal solid waste:

[0111] Municipal solid waste in Yuhuan, Zhejiang belongs to mixed waste, and a few of them are packed in simple bags. At present, its domestic waste is composed of: 30.1% of organic matter such as animals and plants, 41.4% of inorganic matter such as dust, bricks and tiles, paper, plastic, rubber, textiles, Recyclable materials such as metal, glass and bamboo wood are 28.5%. With the continuous improvement of the level of urbanization, the urban infrastructure is becoming more and more perfect, the city gas rate is increasing year by year, the amount of coal ash in the garbage will decrease accordingly, and at the same time, the food waste (fruit peels, etc.), waste products and some bulky garbage in the garbage will increase. , so the proportion of organic matter and recyclable matter in the garbage will increase, while the content of inorganic matter will decre...

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Abstract

The invention discloses a comprehensive disposal method for municipal solid wastes, which comprises the following steps: 1) the wastes are pre-sorted to separately get primary wastes, plastic wastes, fiber wastes and brick wastes; 2) after the treatment of rapid biological fermentation of the primary wastes, degraded wastes are formed; 3) after the secondary sorting of the degraded wastes, non-organics in the degraded wastes are removed; the sorted degraded wastes are obtained; 4) the sorted degraded wastes are ground; after-mature compost treatment is carried out to obtain mature wastes; 5) fertilizer making treatment is carried out for the mature wastes to obtain organic fertilizer. After the method of the invention is used for treating the municipal solid wastes, the harmless level is improved and the effective use of resource is fully realized.

Description

technical field [0001] The invention belongs to the technical field of urban solid waste treatment, and in particular relates to a comprehensive treatment method for urban domestic waste. Background technique [0002] Municipal solid waste is produced along with human urban life, and with the acceleration of urbanization, the growth rate of municipal solid waste is also accelerating. Municipal solid waste disposal is not only related to the quality of people's living environment, but also related to the taste and image of the city where it is located, and related to the sustainable development of the local economy. [0003] Due to the complex composition of urban waste and the influence of economic development level, energy structure, natural conditions and traditional habits, it is difficult to have a unified model. Therefore, the treatment methods of urban waste generally vary with national conditions, and often different treatment methods are adopted in different regions...

Claims

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Application Information

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IPC IPC(8): C05F9/00B09B3/00
CPCY02A40/20
Inventor 林福呈凌民章初龙闵航
Owner ZHEJIANG UNIV
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