论文部分内容阅读
目的通过对闵行区农村生活用井卫生状况的调查,评估现行消毒效果,探索有效的消毒方法。方法采用现场生活用井周边环境调查;井水消毒效果五项微生物和理化指标检测。结果对莘庄和七宝地区的157口井进行了井周环境及使用情况的调查,井周环境存在一定的传染病发病因素,水质检测结果显示手压井在消毒前后,色度、浊度、总大肠菌群以及菌落总数无显著差异性,自然井在消毒前后总大肠菌群有显著性差异。手压井和自然井比较消毒后效果,在浊度、总大肠菌群以及菌落总数方面有显著性差异。手压井和自然井菌落总数和总大肠菌群严重超标。结论闵行区使用的生活用井,存在一定的人群聚集性使用,有传染病暴发的危险因素。自然井消毒效果较手压井显著,手压井由于其使用模式,井深部的水无法得到充分消毒,微生物指标不能达标,存在传染病发病的危险因素。
Objective To investigate the health status of rural life wells in Minhang District, evaluate the current disinfection effect and explore effective disinfection methods. Methods Surrounding environment of field life well was used to investigate the effect of well water disinfection on five microorganisms and physical and chemical indexes. Results A total of 157 wells in Xinzhuang and Qibao areas were surveyed and their environmental factors were investigated. The factors influencing the environment of infectious diseases were well-circumscribed. The water quality test results showed that before and after disinfection, the colorimetric, turbidity, total Coliform bacteria and the total number of colonies was no significant difference between the natural wells in the total coliform before and after disinfection were significantly different. Hand-killing and natural wells after disinfection compared the effect of turbidity, the total coliform bacteria and the total number of colonies were significantly different. The total number of hand-pressed and natural wells colonies and total coliform serious. Conclusion The wells used in Minhang District have a certain concentration of people and risk factors for the outbreak of infectious diseases. Natural well disinfection effect than hand welling significantly, hand well killing because of its mode of use, deep well water can not be fully disinfected, microbial indicators can not be achieved, there is a risk factor for the incidence of infectious diseases.