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Method for producing bricks from urban domestic sludge

A technology of urban domestic sludge and production methods, which is applied in the field of brick production, can solve problems such as land incapability of planting and utilization, waste of land resources, and impact on life, and achieve the effects of reducing construction costs, saving energy, and avoiding pollution

Inactive Publication Date: 2007-11-21
刘仁富
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since various pollution sources in the sludge are heavy, long-term burial in the ground will cause greater pollution to the groundwater, and the land buried in the sludge cannot be planted and utilized, resulting in waste of land resources. big impact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: the production method of city life sludge brick making, carry out according to the following steps:

[0016] a, put the sludge into the fermentation tank for fermentation for 5 days;

[0017] b. Compress and frictionally heat the fermented sludge to 75°C to 80°C at the tight mud port of the brick making machine:

[0018] c. Put the heated sludge in the mud press tank to evacuate, and pour the extracted gas into the water with hydrochloric acid, and the amount of hydrochloric acid added to the water is 2‰;

[0019] d. The treated sludge and shale are mixed to make bricks. The mixing ratio is 20% to 30% of sludge and 70% to 80% of shale.

[0020] In this embodiment, 30% to 50% of energy will be saved in the brick making and sintering process, and 2 to 5 tons of water will be saved per ten thousand bricks.

Embodiment 2

[0021] Embodiment 2: the production method of city life sludge brick making, carries out according to the following steps:

[0022] a, put the sludge into the fermenter to ferment for 7 days;

[0023] b. Compress and frictionally heat the fermented sludge to 80°C to 85°C at the tight mud port of the brick making machine;

[0024] c. Put the heated sludge in the mud press tank to evacuate, and pour the extracted gas into the water with hydrochloric acid, and the amount of hydrochloric acid added to the water is 1.5‰;

[0025] d. The treated sludge is dehydrated and mixed with shale to make bricks. The mixing ratio is 30% to 40% of sludge and 60% to 70% of shale.

[0026] In this embodiment, 50% to 70% of energy will be saved in the brick making and sintering process, and 2 to 5 tons of water will be saved per ten thousand bricks.

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Abstract

A method for treating and utilizing urban domestic sludge and making bricks is carried out by fermenting urban domestic sludge, compressing, fretting and heating above 70 degree at compact opening of brick maker, placing heated sludge into mud-pressing tank, pumping vacuum, inducing extracted gas into water with hydrochloric acid and mixing treated mud with shale to produce bricks. It costs low, has less pollution for underground water and saves land resource and energy resource.

Description

(1) Technical field [0001] The invention relates to the treatment and utilization of municipal domestic sludge, especially a production method for making bricks. (2) Background technology [0002] With the increasing amount of urban sewage discharge, more and more sludge is deposited, and sludge treatment is very difficult. Most of the existing sludge treatment methods adopt deep burial treatment. Since various pollution sources in the sludge are heavy, long-term burial in the ground will cause greater pollution to the groundwater, and the land buried in the sludge cannot be planted and utilized, resulting in waste of land resources. big impact. (3) Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, provide a kind of urban domestic sludge is processed, utilize the sludge after the treatment to make brick production method, thereby overcome the various drawbacks of sludge deep burial, a...

Claims

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Application Information

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IPC IPC(8): C04B18/30C04B14/04
CPCY02W30/91
Inventor 刘仁富
Owner 刘仁富
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