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目的:了解梓潼县水库、塘堰水水质状况,确保饮用水源保护区水质安全,保障人民群众身体健康。方法:采集梓潼全县水库水和塘堰水共165份,按生活饮用水标准检验方法对溶解氧、五日生化需氧量、总磷、总氮进行检测。结果:165份水样中符合地表水环境质量标准Ⅳ类水9份,Ⅴ类水14份,劣Ⅴ类水142份,没有Ⅰ、Ⅱ、Ⅲ类水。总磷、总氮最高值分别是地表水环境质量标准中Ⅴ类水含量上限值的7.0倍、9.6倍。结论:梓潼的地表水氮、磷污染较重,相关部门应采取多种有效措施,加强对饮用水源的有效保护,确保饮用水源安全卫生。
Objective: To understand the water quality of reservoirs and pond weirs in Zitong County, ensure the water quality and safety of drinking water source protection areas and ensure the health of the people. Methods: A total of 165 reservoirs of Zitong county water and pond water were collected. The dissolved oxygen, the fifth day biochemical oxygen demand, total phosphorus and total nitrogen were tested according to the standard drinking water test method. Results: Among the 165 water samples, 9 were Grade IV water, 14 were Grade V and 142 were worse than Grade V. No Grade I, II and III water was found. The highest values of total phosphorus and total nitrogen are respectively 7.0 times and 9.6 times of the upper limit of Grade V water content in surface water environmental quality standards. Conclusion: Zitong has heavy pollution of nitrogen and phosphorus in surface water. Relevant departments should take various effective measures to strengthen the effective protection of drinking water sources and ensure the safety and health of drinking water sources.