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目的分析玉林市生活饮用水卫生质量,为防控水源性疾病和卫生监督管理、农村饮水工程提供科学依据。方法按照GB/T5750-2006《生活饮用水标准检验方法》检验,GB5749-2006《生活饮用水卫生标准》判定,并对检测资料进行统计分析。结果玉林市2008-2010年生活饮用水微生物指标总合格率为71.79%,2008、2010年合格率71.54%、71.79%与2009年57.83%差异有统计学意义(χ2=25.44,P<0.05);总大肠菌群平均超标率最高24.39%(141/578),其次是细菌总数平均超标率17.12%(99/578),耐热大肠菌群平均超标率最低6.93%(40/578);城市集中式供水277份,合格率94.22%,乡村集中式供水125份,合格率64.80%,农村井水176份,合格率41.47%,城乡之间饮用水细菌指标差异有统计学意义(χ2=132.10,P<0.05);分散式供水细菌指标超标率显著大于集中式供水(χ2=114.91,P<0.05);枯水期水质优于丰水期水质但差异无统计学意义(χ2=1.38,P>0.05)。结论玉林市生活饮用水细菌指数均有超标,污染较重在农村,应采取相应措施,确保生活饮用水卫生安全,切实保障饮水居民的身体健康。
Objective To analyze the hygienic quality of drinking water in Yulin City and provide a scientific basis for prevention and control of waterborne diseases and health supervision and management and rural drinking water project. Methods According to GB / T5750-2006 “drinking water standard test method” test, GB5749-2006 “drinking water health standard” judgment, and test data for statistical analysis. Results The total qualified rate of microbial indicators of drinking water in Yulin city was 71.79% from 2008 to 2010. The passing rate of 71.54% and 71.79% in 2008 and 2010 was statistically different from 57.83% in 2009 (χ2 = 25.44, P <0.05). The average over-standard rate of total coliforms was 24.39% (141/578), followed by the average over-standard rate of bacteria of 17.12% (99/578) and the lowest average over-standard rate of heat-resistant coliforms of 6.93% (40/578) The water supply was 277, the pass rate was 94.22%, 125 rural centralized water supply, the passing rate was 64.80%, the well water in rural areas was 176, the pass rate was 41.47%. There was significant difference in drinking water bacteria index between urban and rural areas (χ2 = 132.10, P <0.05). The over-standard index of disperse water supply was significantly higher than that of centralized water supply (χ2 = 114.91, P <0.05), but the difference was not statistically significant (P> 0.05) . Conclusion The bacterial index of domestic drinking water in Yulin City exceeded the standard and the pollution was heavier in rural areas. Corresponding measures should be taken to ensure the sanitary safety of drinking water and ensure the health of drinking water residents.