生物滤池工艺对微污染水处理的效果

Effect of Biofilter Processes for Treatment of Micro-Polluted Raw Water

考察了竹炭和珊瑚砂作为填料的生物滤池对微污染水的处理效果。结果表明,该填料生物滤池对色度、浊度、SS、氨氮、CODMn的平均去除率分别为73.9%和60.4%、72.7%和83.8%、59.8%和67.1%、96.8%和83.6%、43.4%和51.6%。为获得优良的出水水质,并考虑到基建投资费用的经济性,建议用竹炭和珊瑚砂作填料处理微污染水时,生物滤池的水力负荷不宜大于5 m3(/m2.h),填料高度以85 cm为宜。

The purification characteristics of micro-polluted water by biological contact filtering method were studied.The results show that biological filter with bamboo charcoal and coral sand can effectively purify the micro-polluted water,and the removal efficiency of color ,turbidity, SS, NH3-N and COD Mn are 73.9 % and 60.4 %, 72.7 % and 83.8 %, 59.8 % and 67.1%, 96.8 % and 83.6 %,43.4 % and 51.6 %.In order to get an excellent outlet water quality and pay less for the infrastructure investment,the hydraulic loading rate shoud not be set more than 5 m3/（m2· h） and the media height shoud be 85 cm when bamboo charcoal and coral sand were used in purification of micro-polluted water.