Sludge dewatering process and system employing combination of sludge wall-breaking and ultrahigh-pressure squeezer

A sludge dewatering and ultra-high pressure technology, which is used in water/sludge/sewage treatment, presses, sludge treatment, etc. problems, to achieve the effect of shortening the batch running time, reducing the dosage of chemicals, and shortening the mud feeding time

Pending Publication Date: 2021-11-30
SHANGHAI TECHASE ENVIRONMENT PROTECTION
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Problems solved by technology

[0005] The conventional method of sludge treatment in the prior art is to use the method of squeezing after adding organic and inorganic agents to condition, yet, for high water content (water content 97%) sludge dehydration, this method is pressed in the press Finally, it is difficult to achieve a sludge moisture content lower than 50%, usually the moisture content is about 60%. Therefore, in order to achieve a sludge moisture content of 50%, there is currently a method of adding lime to the sludge before pressing. The water content of the slu

Method used

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  • Sludge dewatering process and system employing combination of sludge wall-breaking and ultrahigh-pressure squeezer

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[0022] In order to achieve the technical means of the present invention, the creation of features, to achieve the purpose and effect readily apparent understood, the following examples in conjunction with the accompanying drawings of the sludge and sludge dewatering process of the present invention and the broken EHV press for binding specifically addressed.

[0023] like figure 1 , The present embodiment provides a sludge deep dehydration treatment system, comprising: a sludge thickening tank, the sludge feed pump 3, the solenoid conditioning device 4, the conditioning means 5, 6 can first agent, second agent tank 7, 8 press the pump, high pressure press 9, the conveyor belts 10 and 11 shed mud stack.

[0024] Sludge thickening tank 1 for storing the sludge was allowed to stand. Sludge thickening tank 1 cell reinforced concrete structure. An upper end portion of the sludge thickening tank 1 is provided with a drain pipe 2. High moisture content sludge remain in the original sludg...

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Abstract

The invention discloses a sludge dewatering process and system employing a combination of sludge wall-breaking and an ultrahigh-pressure squeezer. The sludge dewatering process comprises the following steps: 1) performing sludge wall-breaking treatment on raw sludge with a moisture content of 97%; 2) carrying out dosing flocculation conditioning on the sludge having been subjected to the sludge wall-breaking treatment; and 3) carrying out ultrahigh-pressure squeezing on the flocculated and conditioned sludge under a squeezing pressure of 2-10 Mpa until the water content of the squeezed sludge is lower than 50%, and then conveying the sludge for outward transportation treatment. The sludge dewatering process employing the combination of sludge wall-breaking and the ultrahigh-pressure squeezer has the advantages that chemical consumption is low; dehydration effect is good; and batch operation time is shortened, and operation efficiency is improved.

Description

Technical field [0001] The present invention relates to a sludge treatment technologies, and particularly relates to a process and a system for sludge dewatering sludge broken UHP press bonded. Background technique [0002] With industrialization, sludge production increases. Sewage treatment plant sludge is generally employed nearly 58% of landfill, land use using nearly 15%, for building materials using about 8%, about 6% incinerated. Sewage treatment plants commonly used in landfill or simple stacking approach to sludge, sludge treatment and disposal of the current situation is grim. [0003] With the increasing requirements sludge treatment, sludge standards specified generation, transportation, storage, treatment and disposal of the whole process should meet the relevant standards of pollution control, wherein the sewage treatment plant to the reservoir (i.e., not disposal) for the purpose of transport sector factory sludge, the sludge must be dewatered to a standard moistur...

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Application Information

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IPC IPC(8): C02F11/00C02F11/122C02F11/14C02F11/143C02F11/147B30B9/00
Inventor 宋小莉刘红宇刘道广
Owner SHANGHAI TECHASE ENVIRONMENT PROTECTION
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