A method for preparing building materials using microbial activated sludge

A technology of microbial activity and building materials, which is applied in the field of preparing building materials from microbial activated sludge, can solve problems such as low compressive strength, high microbial content in sludge, and potential safety hazards, and achieve low cost, high combustion efficiency, and heat reduction wasteful effect

Active Publication Date: 2021-05-04
XINJIANG FUFENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are also reports of directly using sludge as building materials, such as the Chinese patent technology "201610787371.8, a method for preparing aerated bricks with anti-mildew and frost resistance", which directly applies sludge to prepare aerated brick building materials, but there are The high content of microorganisms in the sludge is likely to cause safety hazards, and there are defects such as low compressive strength

Method used

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  • A method for preparing building materials using microbial activated sludge
  • A method for preparing building materials using microbial activated sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of method utilizing microbial activated sludge to prepare building material, it specifically comprises the steps:

[0033] Dividing the dewatered microbial activated sludge into a large portion of microbial activated sludge and a small portion of microbial activated sludge, wherein the large portion of microbial activated sludge is used for combustion, and the small portion of microbial activated sludge is used to prepare foaming agents;

[0034] Adding fine coal to a large amount of microbial activated sludge to obtain fuel sludge, the amount of fine coal added accounts for 10% of the sludge mass; sending the fuel sludge into the incinerator for combustion, collecting combustion waste residue, and obtaining heat, The heat is collected by the heat collection and conversion device and supplied to the dehydrator;

[0035] Dry a small portion of microbial activated sludge until the moisture content is lower than 20wt%, then add the same mass of 3M hydrochloric acid ...

Embodiment 2

[0041] A kind of method utilizing microbial activated sludge to prepare building material, it specifically comprises the steps:

[0042] Dividing the dewatered microbial activated sludge into a large portion of microbial activated sludge and a small portion of microbial activated sludge, wherein the large portion of microbial activated sludge is used for combustion, and the small portion of microbial activated sludge is used to prepare foaming agents;

[0043] Adding fine coal to a large amount of microbial activated sludge to obtain fuel sludge, the amount of fine coal added accounts for 10% of the sludge mass; sending the fuel sludge into the incinerator for combustion, collecting combustion waste residue, and obtaining heat, The heat is collected by the heat collection and conversion device and supplied to the dehydrator;

[0044] Dry a small portion of microbial activated sludge until the water content is lower than 20wt%, then add the same mass of 3M hydrochloric acid sol...

Embodiment 3

[0050] A kind of method utilizing microbial activated sludge to prepare building material, it specifically comprises the steps:

[0051] Dividing the dewatered microbial activated sludge into a large portion of microbial activated sludge and a small portion of microbial activated sludge, wherein the large portion of microbial activated sludge is used for combustion, and the small portion of microbial activated sludge is used to prepare foaming agents;

[0052] Adding fine coal to a large amount of microbial activated sludge to obtain fuel sludge, the amount of fine coal added accounts for 8% of the sludge mass; the fuel sludge is sent to the incinerator for combustion, the combustion waste residue is collected, and heat is obtained. The heat is collected by the heat collection and conversion device and supplied to the dehydrator;

[0053] Dry a small portion of microbial activated sludge until the moisture content is lower than 20wt%, then add the same mass of 3.5M hydrochlori...

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Abstract

The invention belongs to the technical field of microbial sludge treatment, and discloses a method for preparing building materials using microbial activated sludge, which specifically includes the following steps: burning and hydrolyzing the microbial activated sludge, and combining it with other raw materials, Used in the preparation of building materials. The method of the invention has the characteristics of simple process operation, low production cost, energy saving and environmental protection.

Description

technical field [0001] The invention relates to a method for preparing building materials using microbial activated sludge, in particular to a treatment method for microbial activated sludge. Background technique [0002] With the rapid development of industry, the amount of sludge in supporting industrial sewage treatment stations has also increased significantly. How to better deal with sludge is also the focus of people's attention. Most of the wastewater treatment of amino acid production enterprises adopts microbial technology, which will produce a large amount of microbial activated sludge. Sludge incineration is to use an incinerator to heat and dry the dewatered sludge, and then oxidize the organic matter in the sludge with high temperature, so that the sludge becomes a small amount of ash. This is a reduction, stabilization, and harmless treatment method that can completely remove water and organic matter in sludge and kill pathogens. [0003] Generally speaking, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/10C04B18/10C04B24/00F23G7/00C02F11/18C02F11/121C02F11/143C02F11/13
CPCC02F11/14C02F11/18C04B18/10C04B24/001C04B28/04C04B38/10C04B2201/32C04B2201/50F23G7/001C04B14/06C04B18/08C04B24/122C04B24/18C04B22/002C04B24/14C04B38/0067Y02W30/91
Inventor 包鑫杨瑞丽张宗华史静东毛松举刘元涛
Owner XINJIANG FUFENG BIOTECH
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