Dyeing sludge deep dehydrating-drying treatment device and process

Abstract

The invention discloses a dyeing sludge deep dehydrating-drying treatment device and process. The device comprises a dyeing sludge storage tank, a back-mixing machine, a medium stirrer and a medium dryer, wherein sludge is stored in the storage tank and enters the medium stirrer after being subjected to biological pretreatment and mixed with a water absorption medium, the water absorption medium and the sludge are vibrated, sieved and separated through the medium stirrer, the separated water absorption medium enters the medium dryer, moisture in the water absorption medium is evaporated though the medium dryer, the water absorption medium is dried by the medium dryer, the heated water absorption medium enters the medium stirrer again, the water absorption medium and the sludge are vibrated, sieved and separated through the medium stirrer again, the moisture content of separated dry sludge particles is reduced to be 25%, the dry sludge particles are transported outwards and packaged as finished dry sludge particles, and part of sludge with the moisture content of 12-20% in the medium stirrer enters the back-mixing machine to be mixed with original sludge with the moisture content of 80-85%. The device is small in occupied area, low in investment and low in operation cost.

Description

technical field [0001] The invention relates to deep dehydration-drying treatment equipment and technology of printing and dyeing sludge, which belongs to the innovative technology of deep dehydration-drying treatment equipment and technology of printing and dyeing sludge. Background technique [0002] At present, the moisture content of sludge discharged from sewage treatment plants is about 80%. If it needs to be transported for disposal, the transportation cost will be high. The sludge advanced treatment process can dehydrate the sludge to a moisture content below 60%, which can be reduced by about 50%. freight. The large amount of water contained in sludge is the bottleneck restricting the treatment and disposal of sludge. At present, there are several conventional methods to reduce the water content of sludge. One is chemical conditioning + mechanical deep drying and dehydration process. After dehydration, it is filtered by a new type of plate and frame filter press, s...

AI Technical Summary

Problems solved by technology

However, the drying of waste heat and waste gas leads to a large amount of dry waste gas, high processing costs, large investment, high operating costs, and high requirements for management and operation technology

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