成都双流国际机场航空器二次供水卫生调查

Sanitary survey on the aircraft secondary water supply of Chengdu Shuangliu international airport

目的调查成都双流国际机场航空器二次供水卫生状况,为确保机组和旅客用水卫生安全提供依据。方法对双流国际机场2007—2013年航空器二次供水的水样进行细菌总数、总大肠菌群、游离性余氯、色度、臭和味、p H值、浑浊度、肉眼可见物8项指标进行检测和评价。结果加水站水质合格率最高,加水站出水水质长期保持合格状态;加水车水质合格率能够保持较高的水平;但航空器水抽样结果合格率偏低;加水车水质合格率与加水站水质有明显联系,而航空器水水质与其他两项水质无明显关系;经检测双流国际机场航空器二次供水主要问题是游离氯和菌落总数不合格。结论双流国际机场加水站能够为双流国际机场提供符合卫生要求的航空器二次供水,加水车能够为航空器中转提供安全的机用饮用水,但是航空器水依然存在安全隐患,应加强水中游离氯水平和微生物污染控制。

Objective To investigate the hygienic status of secondary water supply to the aircrafts in Chengdu Shuangliu international airport and to provide the reference for qualified water supply management for aircrew and passengers. Methods Water samples of secondary water supply were collected, 2007-2013, and the microbial index,free residual chlorine, p H value, sensory property index of water samples were tested and evaluated. Results The highest qualification rate of water passing was water station,which tap water quality was above the safety standard.Waterwheel water quality was satisfactory. But the tap water of aircrafts sampling results showed a low qualification rate. There was significant association between the qualification rate of secondary water supply in waterwheels and station tap water. The tap water quality of aircrafts showed no significant relationship with that of water station and waterwheels. The problem of the aircrafts secondary water supply of Chengdu Shuangliu international airport was free residual chlorine and total number of colonies. Conclusion The water station and waterwheels could provide qualified water for aircrafts. There were still potential hygiene problems in tap water of aircrafts. The levels of free residual chlorine and microbial contamination should be controlled furtherly.