金泽水库中试系统对饮用水源原水的净化

PURIFICATION EFFECT OF PILOT SYSTEM FOR TREATING DRINKING WATER SOURCE IN JINZE RESERVOIR

在上海市金泽镇太浦河北岸设计构建了饮用水水源生态净化工程中试系统,以期改善饮用原水水质。通过水质监测,分析了研究期间太浦河原水水质特征,并对中试系统的净化效果进行评价。研究表明:太浦河饮用水源原水水质较好,TP和DO绝大部分时段均能满足GB 3838—2002《地表水环境质量标准》中的Ⅲ类标准,CODMn、NH3-N指标全年均能达到Ⅲ类标准。太浦河原水经中试系统净化后,主要指标不同季节均可稳定达到Ⅲ类水质标准以上,对CODMn、NH3-N、TN、TP和SS的平均去除率分别为7.2%、38.4%、20.4%、36.2%和46.5%,对DO的平均提升率为19.1%,总体表现为夏、秋季节的去除效果优于冬、春季节。中试系统1年内可削减CODMn、NH3-N、TN、TP和SS的量分别为4.6,1.4,4.5,0.5,195.9 t,为原水充氧20.1 t。

The drinking water source ecological purification project pilot system was designed and located at the north bank of Taipu River in Jinze to improve the drinking water quality. Through the water quality monitoring,the characteristics of water quality in Taipu River during the research were analyzed,and the purification effect of the pilot system was evaluated. The results showed that water quality of the drinking water source of Taipu River was good. The concentrations of TP and DO could meet the level Ⅲ of ＂Surface Water Envirenmental Quality Standard ＂（ GB 3838—2002） for most of the time,and the concentrations of CODMnand NH3-N could reach class Ⅲ standard throughout the year. After the water purification process in pilot system,major indicators of water quality in different seasons could stably achieve class Ⅲ standard. The average removal rates of CODMn,NH3-N,TN,TP and SS were 7. 2%,20. 4% 36. 2% and 46. 5%,respectively,and the average increase rate of DO was 19. 1%. The effect of summer and autumn was better than that of winter and spring. The amount of CODMn,NH3-N,TN,TP and SS can be annually reduced by 4. 6,1. 4,4. 5,0. 5,195. 9 t,respectively in the pilot system,and the oxygenation capacity is 20. 1 t per year.