Application of CASS Process in Phase Ⅲ Expansion Project of Xuzhou Sanbahe Sewage Treatment Plant
The design treatment capacity of the Sanbahe Sewage Treatment Plant(third-stage project)in Xuzhou City is 50000 t/d.CASS biochemical tank is used as the main process,and deep treatment adopts rotary disc filter+contact disinfection process.The effluent quality comply with the first level A standard for Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002),and the odor control of the entire plant shall refer to the second level standard for the maximum allowable concentration of atmospheric pollutants ofDis-charge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB18918-2002).After the moisture content of sludge dewatering reduced to 80％,it is transported for disposal.The actual operation results of the sewage treatment plant showed that the effluent quality is better than the design standards;the removal effect of organic matter is the best,and the removal rate of TN is relatively low.The land coverage for every ton of water treated was about 0.26 m2,and the comprehensive treatment cost is 0.5-0.6 yuan per ton of water.
wastewater treatment plantCASS processrotary disc filterodor control system
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