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Method for promoting hydrolytic acidification process in anaerobic tank

A hydrolysis acidification and anaerobic tank technology, applied in the field of water treatment, can solve the problems of insufficient comprehensiveness and inability to significantly improve the treatment efficiency, and achieve the effects of short time, thorough anaerobic hydrolysis and acidification treatment of sewage, and fast treatment.

Inactive Publication Date: 2015-01-21
CHANGZHOU UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is not comprehensive enough, and the processing efficiency cannot be significantly improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Example 1 The sewage from a certain water source is connected to the common anaerobic pond and the improved anaerobic pond of the present invention respectively simultaneously, and the sewage SS is 205g / L. The SS of the sewage treated by the ordinary anaerobic tank is 30g / L, and the treatment time is 12h. The SS of the sewage treated by the improved anaerobic tank is 13g / L, and the treatment time is 10h. It is found by comparison that the conversion rate of the insoluble polymer digested in the improved anaerobic tank is increased, and the rate is increased.

example 2

[0024] Example 2 The sewage from a certain water source is connected to the common anaerobic pool and the improved anaerobic pool of the present invention respectively, and the sewage SS is 346g / L. The SS of the sewage treated by the ordinary anaerobic tank is 51g / L, and the treatment time is 16h. The SS of the sewage treated by the improved anaerobic tank is 16g / L, and the treatment time is 13h. It is found by comparison that the conversion rate of the insoluble polymer digested in the improved anaerobic tank is increased, and the rate is increased.

example 3

[0025] Example 3 The sewage from a certain water source is connected to the common anaerobic pool and the improved anaerobic pool of the present invention respectively, and the sewage SS is 430gL. The SS of sewage treated by ordinary anaerobic tank is 56g / L, and the treatment time is 19h. The SS of sewage treated by improved anaerobic tank is 26g / L. The treatment time is 14 hours. It is found by comparison that the conversion rate of the insoluble polymer in the improved anaerobic tank is improved and the rate is increased.

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PUM

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Abstract

The invention relates to a hydrolytic acidification method in an anaerobic tank. The hydrolytic acidification method comprises the following specific steps: adjusting the environment in a digestion tank in advance until a moderate pH value is achieved by adding an alkali; adding sodium thiosulfate into the digestion tank, and stirring with a stirrer while adding sodium thiosulfate so that the digestion tank is controlled to be in absolutely anaerobic state and the electrode potential is controlled to be at -75ev to -15ev; standing the digestion tank for 3-5 days and then adding ethanol into the digestion tank and continuously fermenting for 3-5 days; and finally introducing sewage into the digestion tank while controlling the digestion tank to be in absolutely anaerobic state, adjusting the pH value of the digestion tank to be 7.2-7.8 by virtue of continuously adding sodium hydroxide, heating the digestion tank to 50-55 DEG C in a gradient manner and carrying out high-temperature treatment on sewage in the digestion tank at the high temperature.

Description

technical field [0001] The invention relates to a method for hydrolysis and acidification of an anaerobic pond, which belongs to the field of water treatment. Background technique [0002] With the development of the economy, water utilization and treatment have become more and more critical in life. Water is a renewable resource, however, it has been seriously polluted by man-made for a long time, the self-purification ability of water is reduced, and the efficiency of water regeneration and reuse is reduced. Water treatment becomes an essential production stage. Among them, sewage treatment is the most extensive and common in the field of water treatment. Nowadays, anaerobic pools are more effective in treating sewage in the water treatment process. The anaerobic tank is a key structure in sewage treatment. It treats sewage in the absence of oxygen. It is generally divided into four stages of anaerobic reaction: hydrolysis stage, acidification stage, acetic acid producti...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/28C02F3/006C02F2209/06
Inventor 徐炜
Owner CHANGZHOU UNIV
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