Drug-adding dehydration reduction system

Abstract

The invention provides a drug-adding dehydration reduction system for treating sludge; the drug-adding dehydration reduction system comprises a sludge receiving tube for receiving the sludge and adding a first drug into the sludge to make the sludge wall-broken, at least one reaction tank connected with the sludge receiving tube and used for receiving the wall-broken sludge and adding a second drug into the wall-broken sludge to make the wall-broken sludge reorganized, a conditioning completing tank connected with the reaction tank and used for receiving the reorganized sludge and adding a third drug into the reorganized sludge to make the reorganized sludge flocculated, and a sludge dehydration machine connected with the conditioning completing tank and used for receiving the flocculated sludge and performing dehydration treatment of the flocculated sludge to reduce the water content of the flocculated sludge. The drug-adding dehydration reduction system can effectively reduce the water content of the sludge and reduce the volume of the sludge.

Description

technical field [0001] The invention relates to a sludge treatment system, in particular to a dehydration and weight reduction system for reducing the moisture content of biochemical sludge. Background technique [0002] With the development of industrialization and the acceleration of urbanization, the sludge production of sewage treatment equipment has increased rapidly, and with the rise of the concept of environmental protection, most of the sludge is treated by incinerators to reduce pollution. The moisture content of undehydrated sludge is mostly higher than 80%. Such sludge is directly put into incinerator for incineration. Incineration treatment can greatly reduce the amount of sludge and reduce the degree of environmental pollution. [0003] However, the sludge particles that have not been dewatered are small and have a flocculent micelle structure, and the water is bound in the sludge particle micelles and difficult to remove, also known as interstitial water. Inte...

AI Technical Summary

Problems solved by technology

[0003] However, the sludge particles without dehydration treatment are small and have a flocculent micelle structure. The water is bound in the sludge particle micelle and is difficult to get rid of. It is also called interstitial water. The interstitial water accounts for more than 70% of the sludge moisture. The higher the sludge volume, the larger the volume, and it is not easy to store and transport, so the amount of sludge treated by subsequent sludge incineration is actually very small

In the existing technology, the moisture content of sludge is reduced by mechanical dehydration, but the sludge particle micelles are not easy to decompose, and the dehydration effect is not good.

In addition, in the existing technology, the water content of sludge is reduced by adding conditioning agents, but due to errors in manual calculation of dosage or only conventional dosages are added, sludge is easily hydrolyzed before dehydration treatment, or sludge is easily hydrolyzed before dehydration treatment. After the sludge cake is formed, the moisture content of the sludge cake is still high, and the calorific value is low

Therefore, the subsequent sludge incineration treatment takes a long time and consumes more energy

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