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Production method of garbage incineration ash residue-containing microbial brick

A technology of waste incineration ash and production method, which is applied in the field of solid waste resource utilization, can solve the problems of harmful gas emission process, poor engineering performance and high energy consumption, achieve good environmental protection and economic benefits, improve strength performance, reduce high energy consumption

Inactive Publication Date: 2018-01-05
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Technical problem: The purpose of this invention is to overcome the defects of high energy consumption, poor engineering performance, harmful gas emission and complicated process in the existing technology of making bricks from waste incineration ash, and to use the technology of microorganism-induced calcium carbonate crystallization for municipal solid waste incineration ash Slag is used to make bricks, cementing and solidifying loose waste incineration ash particles while fixing harmful heavy metal ion components, and solving the problem of resource utilization of municipal solid waste incineration ash with ecological, environmental protection and energy saving methods

Method used

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  • Production method of garbage incineration ash residue-containing microbial brick

Examples

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Effect test

Embodiment 1

[0033] In this example, a method for making a waste incineration ash microbial brick, the method comprises the following steps:

[0034] a. Sieve the waste incineration ash, and take the waste incineration ash with a particle size of less than 5mm and the concentration as OD 600 = 1.2 of the bacterial solution was mixed evenly;

[0035] b. The garbage incineration ash 1 mixed with the bacteria liquid is packed into a porous water-permeable mold 2 for compaction;

[0036] c. Submerge the porous water-permeable mold 2 containing the garbage incineration ash 1 in the mixed salt solution 3 with a concentration of 0.8mol / L, so that the mixed salt solution 3 penetrates into the pores of the garbage incineration ash 2, and let it stand for 12 hours;

[0037] d. Take out the porous water-permeable mold 3 containing the garbage incineration ash 1 from the mixed salt solution 3, and drain the free liquid in the pores of the garbage incineration ash 1;

[0038] e. Repeat operations c a...

Embodiment 2

[0040] In this example, a method for making a waste incineration ash microbial brick, the method comprises the following steps:

[0041] a. Sieve the waste incineration ash, and take the waste incineration ash with a particle size of less than 5mm and the concentration as OD 600 = 1.2 of the bacterial solution was mixed evenly;

[0042] b. The garbage incineration ash 1 mixed with the bacteria liquid is packed into a porous water-permeable mold 2 for compaction;

[0043] c. Immerse the porous water-permeable mold 2 containing the garbage incineration ash 1 in the mixed salt solution 3 with a concentration of 1.2mol / L, so that the mixed salt solution 3 penetrates into the pores of the garbage incineration ash 2, and let it stand for 12 hours;

[0044] d. Take out the porous water-permeable mold 2 containing the waste incineration ash 1 from the mixed salt solution 3, and drain the free liquid in the pores of the waste incineration ash 1;

[0045] e. Repeat operations c and d ...

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Abstract

A production method of a garbage incineration ash residue-containing microbial brick comprises the following steps: a, sieving garbage incineration ash residue, and uniformly blending the garbage incineration ash residue with the particle size smaller than 5mm and a microbial solution with the concentration OD600 of 1.2; b, loading the garbage incineration ash residue 1 blended with the microbialsolution into a porous water-permeable mould 2, and compacting; c, immersing the porous water-permeable mould 2 loaded with the garbage incineration ash residue 1 into a mixed salt solution 3 with theconcentration of 0.8-1.2mol / L so as to enable the mixed salt solution 3 to permeate into pores of the garbage incineration ash residue 2, and standing for 12h; d, taking out the porous water-permeable mould 2 from the mixed salt solution 3, and draining off a free liquid in the pores of the garbage incineration ash residue 1; e, repeating operations in the steps c and d for 4-6 times, and takingout the solidified and moulded garbage incineration ash residue 1 from the porous water-permeable mould 2 to obtain the garbage incineration ash residue-containing microbial brick.

Description

technical field [0001] The invention relates to making bricks from municipal solid waste incineration ash by using microbial technology, so as to realize resource utilization of garbage incineration ash, and belongs to the technical field of resource utilization of solid waste. Background technique [0002] Municipal solid waste incineration ash is regarded as solid waste. At present, the main disposal method is to send it to landfill for burial, which requires a large amount of landfill space. Brick making from municipal solid waste incineration ash is an effective way for its reduction and resource utilization. Existing technologies for making bricks from municipal solid waste incineration ash mainly include high-temperature roasting method, chemical cementation method, cement mixing method, gasification ash slag fly ash cementation method, etc. Microbe-induced calcium carbonate crystallization technology (MICP technology) can also realize the cementation of bulk material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00C04B38/00C04B38/08
Inventor 邵光辉陈相宇赵志峰
Owner NANJING FORESTRY UNIV
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