生物膜—膜生物反应器脱氮除磷性能

The nitrogen and phosphorus removal properties of biofilm-membrane biological reactor

在膜生物反应器中投加聚乙烯悬浮填料,考察生物膜—膜生物反应器对生活污水中污染物质去除效果.结果表明,投加悬浮填料使膜生物反应器去除有机污染物质的能力得到增强,总氮、总磷的平均去除率由45.5%和47.2%分别增至57.4%和71.8%.投加悬浮填料还可以延缓膜污染,膜生物反应器中膜丝比流量在试验结束时为0.1L/(hkPa),而未投加悬浮填料的膜生物反应器中膜丝比流量降至0.036L/(hkPa).

For investigating the effect of a biofilm membrane biological reactor on removal of pollutants in domestic sewage, polyethylene suspended filler was added into the membrane biological reactor (MBR). Adding suspended filler to MBR could strengthen the ability of MBR in organic pollutant removal, with total nitrogen and total phosphorus average removal, rates increased respectively from 45.5% and 47.2% to 57.4% and 71.8%. Adding the suspended filler could also slow the membrane fouling; and the specific flux in MBR was 0.1L/(hkPa) after the test but decreased to 0.036L/(hkPa) without adding the filler.