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Method for making bricks from sludge

A technology for making bricks and sludge from sludge, which is applied in clay products, applications, household appliances, etc. It can solve the problems of difficult mass and heat transfer, difficult dehydration, and high energy consumption required for drying, and achieves the goal of reducing costs and saving energy. Effect

Pending Publication Date: 2020-11-27
杭州国泰环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existence forms of various water molecules inside the sludge and the characteristics of the bacteria and micelles of the sludge determine that the water molecules are difficult to transfer mass and heat during the sludge drying process, which is directly manifested as difficult dehydration and high energy consumption for drying.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] S01-Select 10kg of sludge, and measure its water content, the measured water content is 90%;

[0027] S02-Put the above sludge into the mixer for stirring, during the stirring process, the ozone generator and ultraviolet lamp are used to sterilize and deodorize;

[0028] S03- Divide the stirred and deodorized sludge into two parts, each with a mass of 5kg, one of which is put into the incinerator for incineration. The bricks are broken to form brick slag, and the brick slag and sludge incineration ash are mixed to form additives;

[0029] S04-add water to the second part of sludge for stirring, add a pH regulator, and adjust the pH regulator to 12;

[0030] S05-Put the sludge obtained in S03 into the sedimentation tank for standing, and add the curing agent and then stir and let stand. The added curing agent makes the moisture content of the sludge controlled at 35%

[0031] S06-After standing for a period of time, transfer the settled sludge to the dewatering tank, a...

Embodiment 2

[0035] S01-select 10kg of sludge, and measure its water content, and the measured water content is 88%;

[0036] S02-Put the above sludge into the mixer for stirring, during the stirring process, the ozone generator and ultraviolet lamp are used to sterilize and deodorize;

[0037] S03- Divide the stirred and deodorized sludge into two parts, each with a mass of 5kg, one of which is put into the incinerator for incineration. The bricks are broken to form brick slag, and the brick slag and sludge incineration ash are mixed to form additives;

[0038] S04-add water to the second part of sludge for stirring, add a pH regulator, and adjust the pH regulator to 13;

[0039] S05-Put the sludge obtained in S03 into the sedimentation tank for standing, and add the curing agent and then stir and let stand. The added curing agent makes the moisture content of the sludge controlled at 40%

[0040] S06-After standing for a period of time, transfer the settled sludge to the dewatering tan...

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PUM

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Abstract

The invention relates to a method for making bricks from sludge, which comprises the following steps: S01, taking a certain amount of sludge, and equally dividing the sludge into two parts; S02, adding the sludge into a stirrer for stirring; S03, equally dividing the stirred sludge into two parts, incinerating the first part of sludge to obtain sludge incineration ash, crushing waste bricks to form brick residues, and mixing the brick residues and the sludge incineration ash to form an additive; S04, adding water into the second part of sludge, stirring, adding a pH regulator, and regulating the pH regulator to 12 or above; S05, putting the sludge obtained in the step S03 into a sedimentation tank for performing standing, adding a curing agent, and then stirring and performing standing; S06, after standing, transferring the settled sludge into a dewatering tank, dewatering in the dewatering tank, and then performing standing; S07, after standing, feeding the sludge into a mixing tank,adding the additive prepared in the step S02, SiO2, Al2O3 and Fe2O3, then mixing, stirring, feeding into an extruder, fully mixing, then feeding into an aging tank, and aging for 48 hours; and S08, feeding the aged brick making pug into a blank making workshop.

Description

technical field [0001] The technical field of sludge treatment of the present invention, in particular relates to a method for making bricks from sludge. Background technique [0002] Domestic sludge is the final product in the process of urban domestic sewage treatment. The current sewage treatment technology mainly transfers a large amount of pollutants in sewage to sludge through physical and chemical methods and microbial treatment methods to achieve the purpose of purifying sewage. The essence of sewage treatment is the transfer of some pollutants. While the sewage is purified, a large number of soluble pollutants become insoluble solids, which are sludge. The composition of sludge is complex, mainly composed of bacterial micelles formed by various microorganisms and the aggregates of organic and inorganic substances adsorbed. Sludge generally contains a lot of water, and the solid substances in sludge are mainly organic substances that are difficult to degrade. , heav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13
CPCC04B33/1321C04B33/13C04B2235/656C04B2235/602C04B2235/3217C04B2235/3272C04B2235/3418Y02P40/60
Inventor 何小瑜王成陈鑫波彭贤辉许晗夏泽鑫高雅金
Owner 杭州国泰环保科技股份有限公司