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Preparation for converting urban solid waste into building material and method thereof

A technology of solid waste and building materials, applied in the field of solid waste utilization, can solve the problems of unfavorable composting, impact on the ecological environment, high cost, etc., and achieve the effects of reducing secondary pollution, saving manpower and material resources, reducing occupation and government funds

Inactive Publication Date: 2003-05-21
吴伟文 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] ①The landfills are mostly located in remote areas, and the distance to transport domestic solid waste is relatively long; ②The land that can be used as landfills is limited; ③Pollution of marine water quality, soil and groundwater quality, generation of biogas, and impact on the ecological environment
At present, most of the composting using poultry waste as raw material is mainly due to the wide range of substances contained in domestic waste, and some substances are not conducive to composting.
[0008] (4) Recycling: Using recycling technology, part of the waste can be made into useful things, but the disadvantages are as follows: ① Higher cost; ② Several technologies need to be mastered; ③ Available for recycling limited items

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1-3

[0033] Example 1-3 is to prepare catalytic coagulant.

[0034] The raw materials used and their amounts are listed in Table 1. Put the ingredients in a container and stir well.

example 4

[0036] This example is to prepare a 150 × 150 × 150mm cubic brick sample.

[0037] Specific preparation process:

[0038] With 250 kilograms of pretreated domestic waste in Guangzhou, China (its composition is shown in Table 2), 120 kilograms of catalytic coagulant of example 1 and 30 kilograms of water are mixed with a concrete mixer, injected in the sample mold of 150 * 150 * 150mm, Vibration extrusion molding, and then sent to the indoor curing room, steam heating (120 ℃) ​​curing for 22 hours, and then sent to the natural curing yard for 40 days of natural curing to obtain the required samples.

[0039] The samples were tested by China National Environmental Monitoring Station, and the test results are shown in Table 3.

example 5

[0041] This example is to prepare a cubic brick sample of 150×150×150mm.

[0042] Raw materials and their contents of this example:

[0043] 450 kilograms, 200 kilograms of catalytic coagulants and 60 kilograms of water of pretreated Chinese Fushun City municipal solid waste (its composition is shown in Table 4).

[0044] Specific preparation process: the above raw materials are mixed with a concrete mixer, poured into the mold, vibrated and extruded, sent to the indoor curing room, steam heated (100°C) for 14 hours, and then sent to the natural curing yard for 28 days of natural curing. The test report of the sample by Fushun City, China concluded that it meets the technical requirements of GB / T5101-1998.

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Abstract

The present invention relates to a building material made of urban solid wastes through the process of conversion treatment, and is characterized by that the pretreated urbon solid wastes and catalytic coagualting agent composed of magnesium oxide, magnesium chloride aqueous solution, silicone dioxide, iron trichloride, talcum powder and others and water are mixed, press-formed and cured so as toobtain the invented required building materials.

Description

technical field [0001] The invention relates to solid waste utilization technology, more specifically, a method for converting municipal solid waste into building materials. Background technique [0002] Modern human life style not only consumes a lot of resources and energy, but also discharges a lot of waste every day, including municipal solid waste. For a long time, countries all over the world have attached great importance to the research on the effective utilization of municipal solid waste, and some progress has been made. At present, the methods for large-scale disposal of urban waste in the world include: [0003] (1) Incineration method: Although the use of domestic solid waste waste heat by incineration method is also a way of resource utilization, compared with the recycling of various wastes (such as glass, plastic, metal, etc.) in domestic solid waste Its comprehensive effect is still not ideal. When incinerating domestic solid waste, a large amount of vari...

Claims

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Application Information

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IPC IPC(8): C04B28/32
CPCC04B28/32Y02W30/91
Inventor 杨清沛吴伟文
Owner 吴伟文
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