Sludge is the industrial waste generated during the production process of municipal sewage processing. Because sludge has many disadvantages such as high moisture content, high viscosity, high water holding capacity, and low calorific value, it is difficult to achieve industrial utilization. Dingli Company operated a series of technical researches on the current market situation of sludge treatment and the characteristics of sludge in various regions. Dingli Company concentrating created a new generation of sludge rotary drum drying system, drying product moisture can be reduced to less than 25%, achieving the standard of sludge landfill and further incineration processing conditions. The technology of equipment gets absolutely mature enough, also it has a stable capacity for operation and very convenient to operate and maintain.
The sludge dryer is mainly suitable for electroplating sludge, tannery sludge, chemical sludge, oil field sludge, municipal sewage treatment plant sludge, activated sludge, sewage sludge, petrochemical sludge, paper sludge, printing and dyeing sludge Drying of various sludges such as sludge, biological fermentation fungus residues, and various slag residues and other high-humidity materials.
The sludge drying system includes: heat source, dewatering machine, drying equipment, conveying equipment, dust removal and deodorization equipment.
Heat source ①: Adopt natural gas combustion, plus heat storage type to improve the combustion efficiency of natural gas.
Heat source ②: Use biomass pellets, wood chips, branches, straw, coal, etc. as fuel.
Drying equipment: using patented products, dispersing drum dryer. There is a high-speed dispersing shaft inside the dryer, which disperses the viscous sludge, solves the problem of the viscosity of the sludge, and also improves the heat exchange efficiency. One, two, three, four, five and six drying process working areas are set up in the dryer, and the final moisture content of the material is less than 25%, the entire drying process is completed, and the drying process is discharged from the dryer to enter the next process.
Dust removal and deodorization equipment: The system adopts a four-stage dust removal and deodorization method and a first-stage cyclone dust collector, which can remove dust particles in the exhaust gas. The secondary pickling method is used to remove the odorous gas, the third grade is used to remove the odorous gas, and the fourth grade is used to remove the odorous gas. The final odor gas can be controlled within 2000 dimensionless.
