Comprehensive treatment method for kitchen waste, town excrement and municipal sludge

A technology of kitchen waste and urban sludge, applied in sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc., can solve problems such as soil, air and water pollution, and impact on human natural environment. Achieve resource utilization, reduction and harmless treatment, and reduce external emissions

Inactive Publication Date: 2012-12-26
BEIJING CENTURY GREEN ENVIRONMENTAL ENG &TECH +2
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Problems solved by technology

[0002] With the continuous improvement of the level of urbanization and the continuous increase of the urban population, the amount of garbage generated by residents is huge. The total amount of garbage includes three categories: kitchen wa...

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  • Comprehensive treatment method for kitchen waste, town excrement and municipal sludge

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[0024] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 The present invention shows a comprehensive treatment method for kitchen waste, urban excrement and urban sludge, including kitchen waste pretreatment, fecal waste pretreatment, urban sludge pretreatment, homogenate adjustment, medium temperature fermentation, biogas residue dehydration and biogas process, in which

[0026] 1) Food waste pretreatment: According to the characteristics of food waste containing inorganic substances such as organic matter, oil, water and tableware, in the pretreatment process, the components of different properties must be separated first:

[0027] — Food waste input: food waste input discharge port;

[0028] —Grate sorting: There is a flat coarse grid at the discharge port, and the grid spacing is 60mm. Inorganic residues > 60mm in the food waste are sorted out and sent to t...

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Abstract

The invention discloses a comprehensive treatment method for kitchen waste, town excrement and municipal sludge, relating to the technical field of harmless resourceful treatment for waste. The comprehensive treatment method comprises the following steps of: pretreating the kitchen waste; pretreating the excrement waste; pretreating the municipal sludge; homogenizing; adjusting; fermenting at a medium temperature; dehydrating biogas residue; and performing biogas treatment. The degradation rate of organic matters in the waste reaches over 80 percent.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to a harmless and resourceful treatment method for kitchen waste, urban excrement and urban sludge. Background technique [0002] With the continuous improvement of the level of urbanization and the continuous increase of the urban population, the amount of garbage generated by residents is huge. The total amount of garbage includes three categories: kitchen waste, feces garbage and urban sludge generated by residents. If garbage is discharged freely, it will pollute the soil, air and water sources, directly affect the natural environment in which human beings live, and cause irreparable consequences. Residential domestic waste is a special kind of waste rich in organic matter. How to recycle useful resources in urban waste in the waste treatment process to make them resourceful, and to discharge waste in a harmless manner during the treatment process. Minimizing the amount...

Claims

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Application Information

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IPC IPC(8): B09B3/00C02F9/14C02F11/00C02F11/04C12P5/02C05F17/00
CPCY02E50/343Y02E50/30Y02W30/40
Inventor 王绍康王海山
Owner BEIJING CENTURY GREEN ENVIRONMENTAL ENG &TECH
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