校园生活污水水质时空动态规律初探

通过在三峡大学校园沙河沿岸及沙河出口布点,在2004～2005年对校园生活污水进行了1 a的监测,得出各个水质指标的时空动态变化规律.结果表明:生活污水的主要污染物是磷(TP)和BOD5.污染物的浓度随时间和区域的变化具有一定的规律性,总体表现为中午和夜晚时分高,清晨和傍晚稍低;冬、春季节的污染物浓度都要高于夏、秋季节.在区域上,沙河出水口以及学校接待中心排污口的生活污水的污染物含量最高.校园生活污水的可生化性较好,但不适于采用生物除磷.此结果将为沙河污染综合治理提供一定的参考.

Discussing on Space-time Dynamic Changing Rule of Campus Sewage Quality

Through the monitoring along the Shahe River and at the drainage mouths of the river,we got the campus sewage quality one time per month from 2004 to 2005,the peper discusses the space-time dynamic change rule of the indexes.The monitoring results show that BOD-5 and TP were two main pollutants in campus sewage and that with the alteration of sampling time and sampling site,concentrations of pollutants in campus sewage changed in a certain pattern.Firstly,the pollution level in noon and night was higher than that in morning and dusk;Secondly,in winter and spring,the domestic sewage contained more pollutants than the other two seasons;Thirdly,the domestic sewage from the drainage mouths of the river and the Receiving Center has highest pollutant concentration Biological purification would be suit for removing BOD-5,because of the higher biodegradability(BOD-5/CODcr) of the campus sewage but it is not suit for TP.This research will supply reference for the synthesis management of the Shahe River.