摘要
以上海市某污水处理厂为例,系统研究了降雨对污水厂进水p H值、COD、NH_(4)^(+)-N、TP和TN等污染物浓度的影响。结果表明,在污水处理厂接收到雨水的24 h内,进水中COD、NH_(4)^(+)-N、TP和TN的浓度均升高,并在不同时段出现峰值,说明进水污染物的浓度在短时间内受降雨的影响较大。对比全年雨天和旱天的差异情况,COD、NH_(4)^(+)-N和TN质量负荷差异不明显,TP在雨天的质量负荷普遍高于旱天,但雨天和旱天TN/TP差异不大,说明雨天高质量负荷的TP对污水处理厂处理工艺未造成显著影响。
Taking a certain wastewater treatment plant in Shanghai as an example,the effects of rainfall on wastewater treatment plant’s influent pollutants such as pH,COD,NH_(4)^(+)-N,TP and TN were studied.The results indicated that,during the 24 h after the rain water was received by the wastewater treatment plant,the influent pollutants’concentration all increased and show peaks at different time periods,which proved that the concentrations of influent pollutants were largely affected by rainfall in a short period of time.By comparing the annual pollutants’loads between rainy days and dry days,little difference was shown for the mass loads of COD,ammonia nitrogen and total nitrogen.While the total phosphorus showed higher mass loads in rainy days compared to dry days,the TN/TP,however,showed litter difference.This indicated that the high mass load of total phosphorus has no serious effects on the wastewater treatment process during rainy days.
作者
李晶
LI Jing(Shanghai Chengtou Wastewater Treatment Corporation Limited,Shanghai 201203,China)
出处
《净水技术》
CAS
2021年第4期68-72,共5页
Water Purification Technology
关键词
降雨
污水处理厂
进水污染物
质量负荷
rainfall
wastewater treatment plant(WWTP)
influent pollutants
mass load
