Sludge high-temperature wall-breaking conditioning machine, wall-breaking conditioning dehydration system and method

Abstract

The invention relates to the technical field of sludge treatment, in particular to a sludge high-temperature wall-breaking conditioning machine and a wall-breaking conditioning dehydration system and method.The sludge high-temperature wall-breaking conditioning machine and method includes the following steps:S1, preheating sludge with the water content of 80%; s2, further heating the preheated sludge, breaking cell walls of a large number of cells in the sludge under the action of high temperature and high pressure for a period of time, and releasing water in the cells; s3, cooling the temperature of the wall-broken sludge to be close to the temperature when the wall-broken sludge enters; and S4, adding a flocculation agent into the cooled sludge, carrying out reaction conditioning, pumping the sludge into a plate-and-frame dehydrator, and carrying out squeezing dehydration in the plate-and-frame dehydrator until the water content is 50-60%. The device is particularly suitable for a centralized treatment project of sludge with the water content of about 80%, and the trouble that the sludge with the water content of about 80% needs to be further diluted until the water content is 90% and then enters a plate-and-frame machine to be dewatered is solved.

Description

technical field

[0001] The invention relates to the technical field of sludge treatment, in particular to a sludge high-temperature wall-breaking conditioner, a wall-breaking conditioning dehydration system and a method. Background technique

[0002] With the progress of society, environmental protection is deeply rooted in the hearts of the people. The amount of sewage treatment is increasing, and the amount of sludge generated in the process of sewage treatment is also increasing. At present, the amount of sludge generated by sewage treatment every year will reach more than 50 million tons. The most important link in sludge treatment and disposal is volume reduction, which accounts for the largest proportion of investment and the highest operating cost. At present, the sludge is mainly dehydrated to a moisture content of 70-80% by centrifuges, plate and frame machines and other mechanical equipment, and then the sludge enters the thermal drying device, and the moisture co...

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