Large tonnage sludge dehydration treatment device and sludge treatment method

Abstract

The invention discloses a large-tonnage sludge dehydration treatment device and a sludge treatment method, including a sludge storage and transportation area and a sludge treatment area. Transported to the sludge treatment area, the sludge treatment area is composed of four pyrolysis chambers, the second-level pyrolysis chamber is equipped with two horizontal pyrolysis pipes that are not connected to each other, the third-level pyrolysis chamber is parallel to the first-level pyrolysis chamber, There are six horizontal pyrolysis tubes not communicating with each other, and the fourth-level pyrolysis chamber is parallel to the second-level pyrolysis chamber; each pyrolysis tube is equipped with a hollow spiral impeller. The large-tonnage sludge dehydration treatment device of the present invention adopts four-stage pyrolysis chambers to carry out pyrolysis treatment on sludge in stages, six-pipe pyrolysis chambers and double-pipe pyrolysis chambers are arranged alternately, the pipes are heated outside the pipes and filtered inside the pipes, and the electrocatalytic oxidation method is used. Realize rapid and efficient dissociation of sludge bound water, low dissociation cost and long service life, large daily processing capacity and high processing efficiency, the daily processing capacity can reach 150 tons, and the dryness is 10-15%. It is suitable for large-scale promotion and use.

Description

technical field [0001] The invention relates to a large-tonnage sludge dehydration treatment device and a sludge treatment method, belonging to the field of sewage treatment. Background technique [0002] At present, due to the increase of urban sewage treatment plants, most of the urban sewage treatment plants currently use biochemical processes to treat sewage, and a large amount of biochemical sludge will be generated during the treatment process. The water content of biochemical sludge is high, and the existence forms of water can be divided into two categories: capillary water, interstitial water, surface adsorption water, internal water and other bound water and free water (free water). Part of the free water and interstitial water in the sludge can be removed by means of filtration, gravity concentration, etc. However, since biochemical sludge is a suspension of organic particles as the main body, the particles are fine and colloidal, and have a great affinity with wa...

AI Technical Summary

Problems solved by technology

However, this set of sludge pyrolysis treatment equipment has certain limitations. First, the four-stage sludge spiral pyrolysis tube of the equipment is designed for a single tube, and the processing capacity of the four-stage pyrolysis tube is limited, which leads to the processing of the whole set of equipment. The efficiency is low, the processing capacity is small, and the entire equipment occupies a large area. The combination of the belt pulley and the quantitative bucket is used as the automatic feeding device. The feeding is intermittent and discontinuous, which further limits the processing capacity of the entire processing device.

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