摘要
将城市污水的流量控制在400m3/d左右的条件下,在3200m2池面水浮莲净化塘内进行净化处理.结果表明,在滞留处理时间为8d时, SS、BOD5、CODCr、NH4-N与色度的去除率分别保持在91.85%、84.54%、81.91%、61.88%、86.96%以上,净化水的理化指标达到二级排放标准;细菌总数与大肠杆菌群总数的剩余率也仅为净化前的0.0078%和0.075%,水的卫生指标也得到明显改善.
Under condition of controlling city sewage flow rate at about 400m3/d, the sewage was purificated in Pistia stratiotes L. pond with 3200m2 area. Results show that under the condition of 8d retention time for treatment, the removal efficiencies of SS, BOD5, CODCr, NH4-N and colority are retained over 91.85%, 84.54%, 81.91%, 61.88% and 86.96% respectively; with the indicators of purificated water reached 2nd grade of discharge standards; the residual rates of total bacteria number and coliform group organisms are only 0.0078% and 0.075% of non-treated sewage; the hygieneindicators of water are also improved apparently.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2002年第3期268-271,共4页
China Environmental Science
基金
新疆大学横向课题基金资助项目(19970302)
关键词
水浮莲
净化塘
城市污水
废水处理
Pistia stratiotes L.
purification ponds
city sewage
practice
