【摘要】 高效藻类塘除污效果好、运行费用低、维护管理简便,非常适合资金相对缺乏但土地资源丰富的农村地区的污水处理,但出水中含有大量的藻类妨碍了该技术的推广应用。为此采用水花生塘作为高效藻类塘的后续处理工艺,研究了其对藻类、SS、COD等污染物的去除效果。试验结果表明,在水力停留时间为4 d的条件下,当该工艺运行稳定后对Chl-a、SS、COD、TN及TP的平均去除率分别为90.6%、94.3%、62.9%、32.0%及25.9%,平均削减量分别为0.185、36.713、38.340、4.403和0.283 g/(m2.d)。水花生塘有效地解决了高效藻类塘出水中藻类浓度偏高的问题,使得高效藻类塘更适合在农村地区推广应用。更多还原

【Abstract】 High Rate Algal Pond(HRAP) has the advantage of high efficiency,low costs,and easy operation.It is suitable for wastewater treatment in rural regions which lack capital but are rich in land resources.However,there are a lot of algae in the outflow of HRAP,which baffles its application.Therefore,experiments were made on the removal of algae from outflow of HRAP by alternanthera philoxeroides pond.The experiment results show that the average removal efficiencies of Chl-a,SS,COD,TN and TP are 90.6%,94.3%,62.9%,32.0%,25.9%(HRT=4 d),respectively.The decrement of Chl-a,SS,COD,TN and TP is 0.185 g/(m~2·d),36.713 g/(m~2·d),38.340 g/(m~2·d),4.403 g/(m~2·d) and 0.283 g/(m~2·d),respectively.The problem of high algal concentration in the outflow of HRAP has been solved by alternanthera philoxeroides pond,which makes the high rate algal pond more adaptive to be applied in rural regions.更多还原