浅层气浮-厌氧-NSBR-高密度沉淀池工艺处理印染工业园区废水实例

SHALLOW FLOATATION- ANAEROBIC-NSBR- HIGH DENSITY SEDIMENTATION TANK PROCESS FOR TREATMENT OF PRINTING AND DYEING INDUSTRIAL PARK WASTEWATER

为满足《纺织染整工业水污染物排放标准》(GB4287-2012)的排放要求,浙江某工业园区的印染企业新建2万吨/日的印染废水处理工程,采用高效浅层气浮-厌氧-NSBR-高密度沉淀的处理工艺。该工程经过半年的运行,在进水COD≤2000mg/l,水温≤50℃的情况下,出水COD≤170mg/l,运行平稳。污泥采用锅炉烟气干化处理后焚烧,取得很好的经济效益。

In order to meet the requirements of Discharge standards of water pollutants for dyeing and finishing of textile industry（GB4287-2012）,a new project designed capability 2 ×104m3/d was built for printing and dyeing wastewater treatment in Zhejiang. The hallow floatation- anaerobic-NSBR- high density sedimentation tank process was taken. The practical performance results in half a year showed when the influent COD is less than2000mg/l, the water temperature is less than 50 DEG C, the effluent COD is less than 170mg/l. The sludge incineration with boiler gas treatment, and achieved good economic benefits.