论文部分内容阅读
以上海市中心城区典型分流制系统Z泵站为例,研究了旱天放江对受纳河道水质的影响。结果显示:受放江负荷的影响,受纳河水的COD、硫化物及氨氮浓度增幅分别为(0.23%～37.68%)、(7.4%～76.19%)、(10.60%～76.15%);泵站放江污染物对河道水质的影响有显著差异,其中COD与氨氮浓度的下降主要源于水体的稀释扩散作用,而硫化物浓度的降低则主要受到氧化还原反应的影响;Z泵站旱天放江对河道水质的显著影响范围为泵站排放口上、下游40 m范围内,对黄浦江水质的影响不大。
Taking Z pumping station, a typical diversion system in downtown Shanghai, as an example, the effect of releasing the river in the dry weather on the water quality of the receptive river was studied. The results showed that the concentrations of COD, sulfide and ammonia nitrogen in the receiving river were (0.23% ~ 37.68%), (7.4% ~ 76.19%) and (10.60% ~ 76.15% The influence of river discharge pollutants on river water quality is significantly different. The decrease of COD and ammonia nitrogen concentration is mainly due to the dilution and diffusion of water bodies, while the decrease of sulfide concentration is mainly affected by the redox reaction; The significant impact of the river on the river water quality is within 40 m upstream and downstream of the discharge of the pumping station and has little effect on the water quality of the Huangpu River.