工业性铬污染对湟水水质的影响

Effects of Industrial Pollution by Chromium on Sanitary Quality of Huangshui River

目的分析湟水六价铬(Cr6+)污染现状及污染源。方法将湟水源头区的哈勒涧河上游设为对照点,按湟水流向将A泉、湟海渠、哆吧水源地、扎马隆、西钢桥设为调查点,于1996-2003年采集上述地区的水样并对Cr6+含量进行分析。结果1999-2003年A泉Cr6+平均含量为45.192mg/L,湟水上游湟海渠、下游扎马隆、西钢桥断面水中Cr6+含量逐年上升,哈勒涧河上游至2003年为止仍未检出Cr6+,2003年哆吧水源地首次检出Cr6+(0.007mg/L)。结论A泉附近的青海海北化工厂是湟水上游Cr6+污染的主要来源。

Objective To analyze the status of Huangshui River water pllution by chromium(Cr6+)and define the pollution source. Methods Water samples were collected from 5 monitoring points closely located at the bank of Huangshui River from the upper reaches to the lower reaches including A spring,Huanghai canal,Duoba water source well,Zhamalong,Xigangqiao,and also from the location of the upper reaches of Halejian River in the area of source of Huangshui River established as the control monitoring point during 1996-2003. The contents of Cr6+ in the water samples from above sampling points were determined. Results During 1999-2003,the average content of Cr6+ in the water samples from A spring was 45.192 mg/L,and those from Huanghai canal in the upper reaches of Huangshui River Zhamalong and Xigangqiao increased year by year gradually.By the end of 2003,Cr6+ hadn't been found in the water samples from the upper reaches of Halejian River,but Cr6+ had been found first in the water samples from Duoba water source well with a concentration of 0.007 mg/L. Conclusion Haibei Chemical Industrial Works near A spring was the main source for the Cr6+-pollution of water body of the upper reaches of Huangshui River.