Sludge drying system and sludge drying process

Abstract

The invention relates to a sludge drying system and a sludge drying process, wherein the sludge drying system comprises a mixing and stirring device, a dryer, a multifunctional solar house, a solar air heat collector, a hot dry sludge warehouse, a deodorizing device, and an auxiliary heat source; the sludge dying process comprises the following steps: wet sludge is placed in the mixing and stirring device for stirring; the evenly stirred sludge is discharged out of an outlet of the mixing and stirring device and is thrown into the dryer by a sludge conveying belt from an inlet of the dryer; meanwhile, hot air generated by the solar air heat collector is led into the dryer from an air outlet of the solar air heat collector by a fan in the solar air heat collector for firstly dewatering and drying the wet sludge; and the sludge is discharged out of an sludge outlet of the dryer and is sent into the functional solar house by the sludge conveying belt for secondly piling and drying; the final sludge products are stored in the hot dry sludge warehouse; exhaust generated in the whole process can be deodorized by the deodorizing device connected with the mixing and stirring device, the dryer, the functional solar house and the hot dry sludge warehouse.

Description

technical field [0001] The invention relates to a sludge drying system and process, a two-stage sludge drying process using a solar air heat collector and a multifunctional solar room, and relates to the field of environmental protection and the sludge drying process. Background technique [0002] With the development of urban economy and the increase of population, my country's water pollution is becoming more and more serious, and the construction of urban sewage treatment plants has become an indispensable measure to control water pollution. According to the document issued by the State Council in November 2000, by 2010, the sewage treatment rate of all cities with municipalities in my country should not be lower than 60%, and the sewage treatment rate of municipalities directly under the Central Government, provincial capital cities, cities with independent planning and key scenic tourist cities should not be lower than 70%. Continuing to vigorously build and expand sewa...

AI Technical Summary

Problems solved by technology

[0004] Sludge disposal is a process of high energy consumption and high investment. Because of this, the urban sludge in my country has not been effectively treated for a long time.

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