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

A technology of conditioning machine and wall breaking machine, which is applied in the directions of sludge treatment, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., which can solve the problems of increased processing difficulty, high operating cost, and high drying cost. problems, to achieve the effect of improving adjustability and dehydration, simple process flow and low operating cost

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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the operating cost of this reduction method is high at present. The main reason is that the mud cake of the dehydrator has a high moisture content, and the amount of water removed by subsequent thermal drying is large.
Especially for the project where the sludge from multiple sewage plants is concentrated in one place for re-drying treatment, it will directly face a large amount of sludge with a moisture content of about 80%, and the subsequent drying cost is too high
However, the sludge is dehydrated by the common plate press dehydrator, the moisture content of the sludge is not enough, and the sludge needs to be diluted with water again, which increases the difficulty of treatment.

Method used

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

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Embodiment 1

[0030] The present invention includes three aspects. First, the first aspect includes a sludge high-temperature wall-breaking conditioner. For the sludge high-temperature wall-breaking conditioner, see figure 1 , including interconnected high-temperature sludge breakers and sludge conditioning tanks, in this embodiment, see figure 1 As shown, the high-temperature sludge breaker has a three-layer structure, the middle layer includes a pre-heating chamber, and the pre-heating chamber is provided with a working fluid heat exchange chamber at the corresponding position of the adjacent two layers, and the hydrolysis and wall breaking The chambers are respectively connected to the preheating chamber of the middle layer and the working fluid heat exchange chambers of the two adjacent layers, and a heating device is installed in the hydrolysis chamber to heat and break the sludge in the hydrolysis chamber , because the working fluid heat exchange chamber and the preheating chamber are...

Embodiment 2

[0035] In Embodiment 2 of the present invention, a sludge high-temperature wall-breaking conditioning and dehydration system is provided, which includes a sludge high-temperature wall-breaking conditioner described in Example 1, and the sludge high-temperature wall-breaking conditioner The high-temperature sludge breaker is connected to the wet sludge silo, which contains a large amount of sludge with a water content of about 80%. These sludge may have passed through the existing belt dehydrator or centrifugal dehydrator in advance. The sludge conditioning tank is connected to the plate and frame dehydrator, and the sludge with a water content of about 90% after the wall breaking is further dehydrated to 50% to 60% in the plate and frame dewaterer. Compared with the drying cost required to directly dry the sludge with a water content of about 80% to a water content of 50% to 60%, the technical solution adopted in this example adopts the dehydration method of mechanical dehydrat...

Embodiment 3

[0037] Embodiment 3 Through a kind of sludge high-temperature wall-breaking conditioning and dehydration system provided in Example 2, implement a sludge high-temperature wall-breaking conditioning and dehydration method, including the following steps:

[0038] S1. Put the sludge with a water content of 80% into the preheating chamber of the sludge high-temperature wall-breaking conditioner through the sludge feed pump to preheat the sludge;

[0039] S2. The preheated sludge continues to move forward and enters the hydrolysis and wall breaking chamber of the sludge high temperature wall breaking conditioner to further heat the sludge. After a period of high temperature and high pressure, the cell walls of a large number of cells in the sludge are broken and released intracellular water;

[0040] S3. The broken sludge further enters the working medium heat exchange chamber, exchanges heat with the preheating chamber, and cools the sludge to a temperature close to that at the ti...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/13C02F11/122C02F11/14C02F11/147
CPCC02F11/13C02F11/14C02F11/147C02F11/122C02F2303/06
Inventor 石文政
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