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Special Soil Stabilizer Recycling Treatment of Unburned Bricks Made from Municipal Sludge

A municipal sludge and stabilizer technology, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of environmental pollution, waste of resources, etc., to achieve reduced usage, lower costs, and good pressure resistance The effect of intensity

Active Publication Date: 2020-01-17
包宗义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Municipal sludge refers to the mud or mud cake discharged from urban sewage treatment plants after concentration and dehydration. Generally, the water content is about 80%, and it is rich in organic matter and nutrients such as N, P, and K, as well as heavy metals and pathogenic bacteria. Harmful substances, if not disposed of properly, not only easily cause environmental pollution, but also cause waste of resources

Method used

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  • Special Soil Stabilizer Recycling Treatment of Unburned Bricks Made from Municipal Sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 100 parts by weight of municipal wet sludge and 18 parts by weight of quicklime into the first mixing bin to obtain a sludge mixture; the water content of municipal wet sludge is 70%, which is the secondary sedimentation of a sewage treatment plant in Shanghai pool sludge.

[0026] Add solid waste 9 times the volume of the sludge mixture into the first mixing bin, and mix to obtain the primary mixture;

[0027] The primary mixture is stacked for 21 days;

[0028] After mixing 100 parts by weight of the primary mixture and 6 parts by weight of cement in the second mixing bin for 10 minutes, add 0.018 parts by weight of a soil stabilizer and mix for 10 minutes to obtain an unburned brick mixture;

[0029] The unburned brick mixture is pressed into shape at normal temperature and naturally cured to obtain the unburned brick product.

[0030] The finished unfired brick (240×115×90) is tested according to GB8239-97 for the average compressive strength of 5 unfired bric...

Embodiment 2

[0032] Add 100 parts by weight of municipal wet sludge and 18 parts by weight of quicklime into the first mixing bin to obtain a sludge mixture; the water content of municipal wet sludge is 80%, which is the secondary sedimentation of a sewage treatment plant in Xuzhou pool sludge.

[0033] Add solid waste 9 times the volume of the sludge mixture into the first mixing bin, and mix to obtain the primary mixture;

[0034] The primary mixture is stacked for 21 days;

[0035] After mixing 100 parts by weight of the primary mixture and 6 parts by weight of cement in the second mixing bin for 10 minutes, add 0.018 parts by weight of a soil stabilizer and mix for 10 minutes to obtain an unburned brick mixture;

[0036] The unburned brick mixture is pressed into shape at normal temperature and naturally cured to obtain the unburned brick product.

[0037] The finished unfired brick (240×115×90) is tested according to GB8239-97 for the average compressive strength of 5 unfired bricks...

Embodiment 3

[0039] Add 100 parts by weight of municipal wet sludge and 18 parts by weight of quicklime in the first mixing bin to obtain a sludge mixture; the water content of municipal wet sludge is 80%, which is raw sewage from a sewage treatment plant in Hangzhou mud.

[0040] Add solid waste 9 times the volume of the sludge mixture into the first mixing bin, and mix to obtain the primary mixture;

[0041] The primary mixture is stacked for 21 days;

[0042] After mixing 100 parts by weight of the primary mixture and 6 parts by weight of cement in the second mixing bin for 10 minutes, add 0.018 parts by weight of a soil stabilizer and mix for 10 minutes to obtain an unburned brick mixture;

[0043] The unburned brick mixture is pressed into shape at normal temperature and naturally cured to obtain the unburned brick product.

[0044] The finished unfired brick (240×115×90) is tested according to GB8239-97 for the average compressive strength of 5 unfired bricks, the minimum value of ...

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Abstract

The invention relates to a baking-free brick prepared from municipal sludge obtained through resource treatment by a special soil body stabilizing agent. Preparation materials of the baking-free brick comprise 100 weight parts of primary mixing materials, 5 to 10 weight parts of cement and 0.01 to 0.1 weight part of soil body stabilizing agents; the primary mixing materials are prepared from 100 weight parts of municipal wet sludge, 15 to 20 weight parts of quicklime and solid wastes; the soil body stabilizing agents are prepared from 100 weight parts of water, 1 to 15 weight parts of surface active agents, 0.1 to 10 weight parts of boric acid or borate. The consumption of the solid wastes is 7 to 13 times of the total volume of the mixture of the municipal wet sludge and quicklime. The prepared baking-free brick has good pressure-resistant intensity and water-resistant performance.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an unburned brick manufactured by using a special soil stabilizer to recycle municipal sludge. Background technique [0002] Municipal sludge refers to the mud or mud cake discharged from urban sewage treatment plants after concentration and dehydration. Generally, the water content is about 80%, and it is rich in organic matter and nutrients such as N, P, and K, as well as heavy metals and pathogenic bacteria. Harmful substances, if not disposed of properly, not only easily cause environmental pollution, but also cause waste of resources. With the rapid development of my country's economy and urbanization, the generation and quantity of municipal sewage have increased dramatically. [0003] With the further intensification of urbanization, there are more and more municipal sludge in our country, and a new process and technology is urgently needed to make municipal sludge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B18/04
CPCC04B28/04C04B2201/50C04B18/0418C04B22/064C04B18/12C04B18/16C04B18/04C04B22/0013C04B24/20C04B2103/0068Y02W30/91
Inventor 包宗义
Owner 包宗义
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