浙江省水库水源水氨氮等水质参数阈值范围调研

Investigation on Threshold Ranges of Water Quality Parameters Including Ammonia Nitrogen of Source Water of Reservoirs in Zhejiang Province

对我国浙江省水库水源水氨氮等8个水质参数的阈值范围进行了调研。采用聚类分析法,对文献查阅收集到的浙江省水库水源水氨氮、COD_(Mn)、p H、水温和浊度等水质参数数据进行统计分析,初步得到5个水质参数的阈值范围。通过实地调研和采样分析,验证了初得的5个水质参数的阈值范围,同时补充完善了氨基酸、腐殖酸和尿素等参数的阈值及范围,最终得到了浙江省水库水源水氨氮等8个水质参数的阈值范围。结果表明:氨氮、COD_(Mn)、pH、水温、浊度、氨基酸、腐殖酸和尿素的阈值范围分别为:0.01~0.32、0.0~4.5mg/L、6.70~8.81、4.1~34.0℃、0.9~10.9NTU,0.029~0.131、0.41~0.61和0.02~0.07 mg/L。该结果为微污染水源水强化混凝及产出水消毒过程中,含亚硝胺类的消毒副产物的形成规律和机理研究奠定了可靠的数据基础。

The threshold ranges of 8 water quality parameters including ammonia nitrogen of source water of reservoirs in Zhejiang province were investigated. Using the method of cluster analysis, the water quality parameter data of reservoirs in Zhejiang province from literature survey, including ammonia nitrogen, COD_（Mn）, p H, water temperature, turbidity and so on, were analyzed statistically. And the threshold ranges of 5 water quality parameters were acquired. The threshold ranges of the 5 parameters were verified through collecting and analyzing the water samples from the representative water source places, and the threshold ranges of additional 3 parameters including amino acid, humic acid and urea were supplemented. The threshold ranges of 8 water quality parameters of source water of reservoirs in Zhejiang province were concluded eventually. The results showed that： the threshold ranges of ammonia nitrogen, COD_（Mn）, p H, water temperature, turbidity, amino acid, humic acid and urea were 0.01-0.32, 0.0-4.5 mg/L, 6.70-8.81, 4.1-34.0 ℃, 0.9-10.9 NTU, 0.029-0.131, 0.41-0.61 and 0.02-0.07 mg/L, respectively. The results would lay a reliable data base for the study of the formation regularity and mechanism of nitrosamine disinfection byproducts produced in the processes of both the enhanced coagulation of source water and the disinfection of product water.