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目的了解某铁路局高铁车站二次供水卫生现状,为进一步做好卫生管理工作提供依据。方法根据GB/T5750-2006《生活饮用水标准检验方法》分别于2015-2016年度不同时期采集某铁路局高铁车站二次供水进行检测,依据GB 5749-2006《生活饮用水卫生标准》对检测结果进行评价,使用SPSS19.0数据统计软件对结果进行统计分析。结果2015-2016年度共检测301份水样,合格274份,合格率为91.03%,枯水期合格率高于丰水期(P<0.05)。与丰水期相比,枯水期总硬度(以Ca CO3计)、氯化物、硫酸盐、菌落总数、浑浊度(散射浑浊度单位)、溶解性总固体、耗氧量(CODMn法,以O2计)、硝酸盐(以N计)检测值较低,氯气及游离氯制剂(游离氯)检测值较高,其中前5项指标与氯气及游离氯制剂(游离氯)合格率较高(P<0.05)。各指标间存在一定的相关性。氯气及游离氯制剂(游离氯)检测值在0.02~0.1mg/L时,浑浊度(散射浑浊度单位)与菌落总数为正相关(P<0.05),氯气及游离氯制剂(游离氯)检测值超过0.1 mg/L时相关系数无统计学意义。结论丰水期二次供水水质合格率相对较低。相关部门需进一步加大丰水期饮用水质处理,以改善水质品质,并增加水质检测与监管检测频率,保障饮水安全。
Objective To understand the secondary water supply status of high-speed rail station in a railway bureau and provide basis for further health management. Methods According to GB / T5750-2006 Standard Test Method of Domestic Drinking Water, the secondary water supply of high speed rail station of a railway bureau was collected at different periods in 2015-2016 for testing. According to GB 5749-2006 Sanitary Standard for Drinking Water, the test results Evaluation, the use of SPSS19.0 data statistical software for statistical analysis of the results. Results A total of 301 water samples were tested in 2015-2016, with 274 passes, with a passing rate of 91.03%. The passing rate in dry season was higher than that in wet season (P <0.05). Compared with the wet season, total dry hardness (calculated as CaCO3), chloride, sulfate, total number of colonies, turbidity (scattering turbidity units), total dissolved solids, oxygen consumption (CODMn method, ), Nitrate (in terms of N) lower detection value, chlorine and free chlorine (free chlorine) higher detection value, of which the first five indicators and chlorine and free chlorine (free chlorine) pass rate was higher (P < 0.05). There is a certain correlation between the indicators. The detection results of chlorine and free chlorine (free chlorine) showed a positive correlation (P <0.05) between the turbidity (scattering turbidity unit) and the total number of colonies when the detection value was between 0.02 and 0.1 mg / L, and chlorine and free chlorine (free chlorine) The correlation coefficient was not statistically significant when the value exceeded 0.1 mg / L. Conclusion The water quality of the secondary water supply in the wet season is relatively low. Relevant departments need to further increase drinking water treatment during the wet season to improve the quality of water quality, and increase the frequency of water quality testing and regulatory testing to protect the safety of drinking water.