A method of oxidizing sludge organic matter to improve its dewatering performance

A technology of dehydration performance and organic matter, which is applied in the oxidation treatment of sludge, dehydration/drying/concentrated sludge treatment, etc., can solve the problems of water can not flow out, block the water filtration channel, etc., and achieve easy operation and equipment maintenance, easy removal, Simple process effect

A technology of dehydration performance and organic matter, which is applied in the oxidation treatment of sludge, dehydration/drying/concentrated sludge treatment, etc., can solve the problems of water can not flow out, block the water filtration channel, etc., and achieve easy operation and equipment maintenance, easy removal, Simple process effect

CN104003602BActive Publication Date: 2015-12-09湖南葆华环保科技有限公司
6 Cites 2 Cited by

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment includes the following steps:

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

[0021] (2) Dosing oxidation: pump the sludge 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 and sludge slurry contained in the ferrous sulfate solution is 0.01:1, and the slurry is made into the sludge homogenization tank;

[002...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
09 Dec 2015
Publication
CN104003602B
IPC
C02F11/12; C02F11/14; C02F11/06
Inventors
周旋辉; 李加皇