Waste sludge dewatering method of water-based material

Abstract

The invention discloses a waste sludge dewatering method of a water-based material, and belongs to the technical field of sludge dewatering, the waste sludge dewatering method of the water-based material reduces the water content of sludge through chemical treatment and mechanical dewatering treatment by pretreatment, and has the advantages of thorough sludge treatment, high energy utilization rate, low energy loss, high recovery rate, high energy utilization rate and the like. Meanwhile, the dehydration device adopts a stacked screw type, so that self-cleaning and no blockage can be realized, the sludge is dehydrated by virtue of volume internal pressure, and the rotation speed is low, so that the energy is saved, and the noise is low.

Description

technical field [0001] The invention relates to a water-based material waste sludge dehydration method, in particular to a water-based material waste sludge dehydration method. Background technique [0002] Coatings are widely used in daily life, but a large number of chemicals used in their production process contain certain volatile organic compounds, such as ether esters, benzenes, aldehydes, etc. Such substances will be slowly released during the decoration and decoration process of the paint and in the future, which not only irritates the skin and respiratory system, but also enters the blood, causing serious teratogenic and carcinogenic changes. [0003] There are some inorganic metal substances in the wastewater, and the discharge into the water body will cause great harm to the health of the human body, animals and plants. The types of dehydrators commonly used in the prior art include plate-and-frame, centrifugal, belt, and stacked screw types. When selecting sludg...

AI Technical Summary

Problems solved by technology

The types of dehydrators commonly used in the prior art include plate-and-frame, centrifugal, belt, and stacked screw types. When selecting sludge dewatering equipment, in addition to considering the water content requirements of the mud cake, investment costs, and operating conditions, etc., Also need special consideration of the characteristics of the sludge, mercury in the sludge containing mercury can volatilize a small amount of mercury vapor at normal temperature, and the dehydration devices of the prior art are usually plate-frame, centrifugal, and belt-type airtight. Open type, poor sealing conditions, poor working environment, easy to cause high mercury concentration, resulting in secondary pollution, if the management is not good, it will cause mud overflow problems, if the mercury content in the working space exceeds the standard, it will endanger personnel and the environment

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