生物砂滤池处理微污染原水的试验研究

生物砂滤池是在普通砂滤池的石英砂表面培养附着生物膜而形成的强化处理工艺.采用其处理微污染原水,并考察了出水水质,结果表明：生物砂滤池对CODMn的平均去除率由普通砂滤池的13%提高到31.5%左右,对NH4^＋-N的平均去除率由23.5%提高到88.3%左右,对亚硝酸盐氮的平均去除率由零提高到90%左右,出水浊度＜1 NTU,色度＜15度.该工艺在现有普通砂滤池基础上即可实现,是解决微污染水源水质的一条新途径.

Study on Micro-polluted Raw Water Treatment by Bio-sand Filter

Bio-sand filter is a developed conventional sand filter in which biofilm has been cultivated on the surface of quartz sand,which is used to treat micro-polluted raw water.This method is easy to be achieved,and has better treatment effects.The removal rate has been increased from about 13% to(31.5)% for COD_(Mn),23.5% to 88.3% for NH~+_4-N,and 0 to 90% for NO~-_2-N.The turbidity and color of the treated water are under 1 NTU and 15 degrees.This process can be achieved from conventional sand filter that does not require adding any other structures.It is a new way to solve the quality of micro-polluted source water.