A few days ago, the reporter learned from the West Coast Public Utility Group Yitong Thermal Power Company that the company's new sludge disposal environmental protection project “Steam Drying Sludge System†has been commissioned and is to be put into operation. Many of the project's technologies have been pioneered in China.
As early as in 2009, the company launched a comprehensive urban sludge disposal project. The urban sludge produced by various urban sewage treatment plants was dried and processed through a high-pressure plate and frame pressure filtration process to make fuel cakes, which were all used for thermal power plant incineration. Power generation has innovatively solved the problem of urban sludge disposal.
"After frame-frame filtration, the moisture content of the sludge can be reduced from 80% to 40%. As a mixture of fuel and coal, this moisture content is not perfect. If the moisture content is lower, the sludge combustion will be more fully and environmentally friendly. "Corporate responsible person told reporters. For this reason, Yitong Thermal Power Company continued to deepen its research on sludge disposal technologies. After extensive investigations, it decided to add a steam drying sludge system based on the pressure filtration and dewatering to achieve a complete "transformation" of the sludge.
It is reported that the steam drying system uses a multi-channel air suction scheme to ensure fresh air flow at any time in the wet sludge silo, operation pit, and main plant, eliminating the harm caused by hydrogen sulfide and other toxic and harmful gases to operators, and preventing Harmful emissions of secondary emissions of secondary pollution, which is the first domestic sludge drying industry. At the same time, this system is the first in China to provide a filter-transfer technology for filter-pressurized sludge, which solves the domestic problem of filter-pressurized sludge that cannot be transported.
After the project is put into production, the daily processing capacity can reach 200 tons, which basically meets the requirements for the Nissan Nissan sludge production in the Western District. After the drying treatment, the moisture content of the sludge can be reduced to 30%, greatly improving the combustion efficiency, and the disposal volume and the moisture content after treatment all rank first in the country, and the reduction, harmlessness, and resources of the sludge are truly realized. Processing.
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