Heat-free sludge drying method and device system thereof

A sludge and drying technology, used in chemical instruments and methods, sludge treatment, water/sludge/sewage treatment, etc., can solve problems such as unbearable treatment costs, odor and dust generation, and limited application scope. Achieve significant energy-saving effect, reduce water viscosity, and avoid secondary pollution.
CN111153579AInactive Publication Date: 2020-05-15秦皇岛尼科环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
秦皇岛尼科环境科技有限公司
Publication Date
2020-05-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a heat-free sludge drying method and a device system thereof. The heat-free sludge drying method comprises the following technological steps: 1, sludge to be treated is conveyed into a stirring machine, a chemical conditioner and a physical conditioner are added, and mixing is performed until uniformity; (2) the uniformly mixed sludge is conveyed into a reaction tank, and stays for a certain time to ensure sufficient reaction; (3) after the reaction is completed, the sludge enters a squeezing device and is rapidly dehydrated; (4) the dehydrated mud cake enters a crusherand is crushed; (5) the crushed mud cake enters a drying bin and undergoes forced ventilation drying; and (6) the generated sewage enters a water treatment device and is treated. The dehydration process is short in time, and heating is not needed in the drying process; and the method has the advantages of high treatment efficiency, low energy consumption, low treatment cost, no secondary pollution and the like. The moisture content of the dried sludge cake is 20-40% and is adjustable, and the import requirements of various sludge final treatment processes can be met.
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Description

technical field

[0001] The invention relates to a heatless drying method for sludge treatment and a device system thereof, belonging to the technical field of sludge deep dehydration and drying. Background technique

[0002] Sludge, especially the excess sludge produced by urban sewage treatment plants, has the characteristics of high water content, high organic matter content, difficult dehydration, easy corruption and odor, etc. If it is not handled properly, it will cause serious secondary pollution. common environmental problems. The core issue of sludge treatment is dehydration. Only when the moisture content of sludge is reduced to a certain level can subsequent final disposal, such as incineration, pyrolysis, composting, landfill, etc. be carried out. The water content of the excess sludge produced by the sewage treatment plant is 80-85%. The water content can be reduced to 50-60% by pressure dehydration treatment, and the water content can be reduced to 20-60% by he...

Claims

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