Method for improving dehydration performance of sludge through oxidizing organic matters in sludge

A technology of dewatering performance and organic matter, applied in the oxidation treatment of sludge, dewatering/drying/concentrating sludge treatment, etc., can solve the problems of water can not flow out, block water filtration channels, etc., to achieve easy operation and equipment maintenance, easy removal, cost reduction effect

Active Publication Date: 2014-08-27
湖南葆华环保科技有限公司
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  • Summary
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  • Application Information

AI Technical Summary

Problems solved by technology

After the sludge is treated by the traditional method, the organic matter is compressed and deformed during the compression process of the sludge, which blocks the filter channel of the water and prevents the water from flowing out.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] This embodiment includes the following steps:

[0020] (1) Mixed dilution or concentration: inject the sludge with a moisture content of 80wt% after treatment in the sewage plant into the sludge mixing receiving tank, add water to dilute to a moisture content of 92wt%, and stir evenly to obtain sludge slurry;

[0021] (2) Dosing oxidation: pump the sludge slurry obtained in step (1) through a sludge pump, inject 98wt% concentrated sulfuric acid through a pipeline mixer, adjust the pH value of the sludge to 3, and then inject a concentration of 27. 5wt% industrial grade hydrogen peroxide, the mass ratio of the hydrogen peroxide to the sludge slurry obtained in step (1) is 0.01:1, after stirring and reacting through the pipeline mixer, inject the prepared ferrous sulfate solution at the end of the pipeline mixer , the mass ratio of ferrous sulfate contained in the ferrous sulfate solution to the sludge slurry is 0.01:1, and the slurry is discharged into the sludge homogen...

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Abstract

A method for improving dehydration performance of sludge through oxidizing organic matters in the sludge includes the following steps that (1), mixing dilution or concentration is performed; (2), chemical feeding is performed for oxidization; (3), solid-liquid separation is performed; (4), liquid filtering is performed. The method is simple in progress, conditions are easy to control, the dehydration time for the sludge can be shortened, and the sludge can be treated on a large scale.

Description

technical field [0001] The invention relates to a method for oxidizing sludge organic matter, in particular to a method for oxidizing sludge organic matter to improve its dewatering performance. Background technique [0002] With the acceleration of urbanization, the discharge of urban sewage is also increasing. In order to solve the problem of environmental pollution caused by urban sewage discharge, various sewage treatment plants have been launched one after another. With the increase of sewage treatment capacity, new problems of sludge treatment have been brought. A sewage treatment plant with a daily processing capacity of 300,000 tons produces approximately 120 tons of sludge with a moisture content of 80% per day. Sludge is a solid-liquid mixture produced in each unit of the sewage treatment system. It is an accessory product of the sewage treatment process. It is an extremely complex heterogeneous body composed of organic debris, bacterial cells, inorganic particles...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F11/14C02F11/06
Inventor 周旋辉李加皇
Owner 湖南葆华环保科技有限公司
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