Method and equipment for treating sludge in normal state

A sludge, normal technology, applied in the oxidation treatment of sludge, dewatering/drying/concentrated sludge treatment, etc., can solve the problems of insignificant effect, high price, affecting the industrial application and promotion of technology

Inactive Publication Date: 2011-08-10
HUNAN XIANGNIU SLUDGE ADVANCED TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the shortcomings of high price and inconspicuous effect of single use, the industrial application and promotion of these technologies have been affected.

Method used

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  • Method and equipment for treating sludge in normal state
  • Method and equipment for treating sludge in normal state
  • Method and equipment for treating sludge in normal state

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Embodiment 1

[0024] Such as figure 2 As shown, the sludge treatment equipment provided by the present invention includes a reaction tank I, an ozone generator II, an air compression system III, a filter press system IV and a coagulation tank V. Wherein, the reaction tank 1 is also connected with the agitator 1, the tail gas treatment device 2, the excess sludge feeding device 3, the liquid feed port 10, and the solid feed port 11; Empty pipeline 8, also be provided with the aeration device 4 that is communicated with ozone generator II at the bottom of reaction tank; Press filter system IV communicates with air compression system III, and, by providing oxygen-enriched air to ozone generator II; Settling tank V communicates with press filter system IV through feed pump 9 .

[0025] For operating procedures, see figure 2 :

[0026]1. Close the sludge outlet valve 12 of the reaction tank, open the residual sludge feed device 3 of the reaction tank to feed, and add metered oxidation direc...

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Abstract

The invention relates to a method for treating sludge in municipal sewage, in particular to a method for separating water from sludge in the watery sludge. The method comprises the following steps of: (1) adding an oxidation directing agent and a regulator into the sludge, stirring the sludge and filling ozone into the sludge; and (2) after stirring to perform a reaction, adding a coagulant agent, and finally carrying out pressing filtration on the sludge to obtain the sludge with the moisture content of below 55 percent. By the method overcomes the technical bottleneck that in a normal temperature sludge treatment process, water adsorbed by the sludge containing organic matter cannot be removed, and achieves the aims that the cost is low, the effect is good and the processed sludge reaches the national standard.

Description

technical field [0001] The invention relates to a treatment method for sludge in urban sewage, in particular to a method for separating water and sludge in water-containing sludge. Background technique [0002] Sludge is organic matter, microbial micelle and other sedimentary substances produced in sewage treatment plants in the process of sewage treatment, as well as residues such as froth floating on the surface of sewage, which contains a large number of pathogenic bacteria, parasites, pathogenic microorganisms, dioxins and arsenic, Toxic heavy metals such as copper, mercury, and chromium, and even toxic and harmful substances that are difficult to degrade such as radionuclides. How to further treat and dispose of the sludge produced by sewage treatment plants is a major problem in the field of environmental protection in the world today. Due to the colloidal water-absorbing characteristics of sludge, the sludge has a high moisture content and a large volume, which bring...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/06C02F11/14
Inventor 李志光何纯莲
Owner HUNAN XIANGNIU SLUDGE ADVANCED TREATMENT
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