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Method for producing organic fertilizer with urban refuse as raw material

A technology of urban waste and organic fertilizer, applied in the direction of organic fertilizer, bio-organic part treatment, waste fuel, etc., can solve the problems of large area, large amount of garbage ash, ground pollution, etc., and achieve low investment cost and comprehensive utilization rate High, yield-enhancing effect

Inactive Publication Date: 2007-11-21
肖国华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the amount of daily garbage in the city is extremely huge and its composition is complex. Except for plastic waste, metal waste, rubber waste, etc., most of the remaining waste is rich in organic matter, inorganic matter and minerals. Waste disposal is an important issue. The use of open-air stacking and landfill covers a large area and causes ground and groundwater pollution. Most of them use incineration, but the incineration flue gas contains harmful components such as chlorine, fluorine, and sulfur dioxide, which pollutes the atmosphere. Garbage after incineration There are also harmful substances in the ash, and the amount of garbage ash is also large. If no suitable use is found, a large amount of farmland will be occupied, and the secondary pollution will be serious.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The first step, crushing: sorting and recycling the renewable and usable substances in the urban garbage, such as scrap metal, plastic, glass, porcelain, cloth, brick, tile, sand, stone, etc., and use the sorted garbage Coarse crushing after quicklime water disinfection and sterilization.

[0015] The second step, fermentation: send 100 tons of crushed garbage into the artificial fermentation device, add fermentation aids such as sludge, distiller's grains, livestock or poultry manure and 1 ton of urea, heat at 130 ° C for 2-5 days, and then it will be decomposed , The decomposed garbage contains considerable organic matter, organic salt and other nutrients;

[0016] The third step, grinding: the fermented garbage is sent to the drying kiln for drying, and then the dried garbage is ground to 200 mesh, screened and packaged to obtain powdery fertilizer.

Embodiment 2

[0018] According to the method described in Example 1, use urban refuse as raw material to produce organic fertilizer, and add 3 tons of ammonium bicarbonate to 100 tons of garbage during fermentation. The fuel used for drying in the third step is to use recovered biogas or overflowed biogas and ammonia, sulfide and other gases during the garbage decomposing process as fuel. Others are identical to Example 1.

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Abstract

Production of organic fertilizer by urban refuse is carried out by crushing, separating, recovering reused substances from urban refuse, sterilizing by caustic lime, crushing for separated refuse, fermenting, adding into mud, baking accessories and urea and carbon ammonia, inducing while heating for 2-5 days to obtain organics and organic salts, delivering fermented refuse into drying kiln, drying, grinding dried refuse to 200 meshes, screening and packing to obtain powdery fertilizer. It's efficient, cheap, has various raw materials and no environmental pollution and can be reutilized.

Description

Technical field: [0001] The invention relates to waste recycling, especially urban waste recycling and reuse. Background technique: [0002] At present, the amount of daily garbage in the city is extremely huge and its composition is complex. Except for plastic waste, metal waste, rubber waste, etc., most of the remaining waste is rich in organic matter, inorganic matter and minerals. Waste disposal is an important issue. The use of open-air stacking and landfill covers a large area and causes ground and groundwater pollution. Most of them use incineration, but the incineration flue gas contains harmful components such as chlorine, fluorine, and sulfur dioxide, which pollutes the atmosphere. Garbage after incineration There are also harmful substances in the ash, and the amount of garbage ash is also very large. If no suitable use is found, a large amount of farmland will be occupied, and the secondary pollution will be serious. Invention content: [0003] The purpose of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F9/04
CPCY02E50/343Y02A40/20Y02E50/30Y02W30/40
Inventor 肖国华
Owner 肖国华
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