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Method for producing phosphate-fertilizer with urban refuse as raw material

A technology of municipal waste and phosphate fertilizer, which is applied in the treatment of organic fertilizers, waste fuels, and biological organic parts, etc., can solve the problems of large floor space, large amount of garbage ash, polluted atmosphere, etc., and achieves low investment cost and high comprehensive utilization rate. , the effect of improving soil

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 method for producing phosphate fertilizer from urban garbage as raw material:

[0015] 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 After quicklime water disinfection and sterilization, it is coarsely crushed to about 40 meshes;

[0016] The second step, fermentation: the crushed garbage is sent to the artificial fermentation device, and fermentation aids such as distiller's grains, livestock or poultry manure and phosphate fertilizer with 10% of the weight of the garbage are added, and heated at 120°C for 3 days to induce rottenness, and the decomposed garbage Contains considerable organic matter, organic salt and other nutrients; add bean cakes to the decomposed garbage, stir evenly, and then ferment naturally for 2-3 days;

[0017] The third step, grinding: the fermented garbage is sent to ...

Embodiment 2

[0019] According to the method described in embodiment 1, take urban refuse as raw material to produce phosphate fertilizer:

[0020] The first step is exactly the same as Example 1.

[0021] The vegetable cake added in the second step is vegetable cake.

[0022] 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.

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PUM

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Abstract

Production of phosphate fertilizer by urban refuse is carried out by crushing, separating, recovering reused substances from urban refuse, sterilizing by caustic lime, crushing for separated refuse, adding into baking accessories and phosphate fertilizer, inducing while heating for 2-5 days to obtain organics and organic salts, adding vegetable cake into rotted refuse, agitating, naturally fermenting for 2-3 days, 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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