Analysis Of Water Quality Status And Influencefactors Of Drinking Water In Fuzhou Region

Objective:Drinking water refers to water for drinking and water for human life,from central water supply units directly supplies dweller, including direct drinking water and water for daily life.There are many problems in the process of development and utilization of drinking water.Drinking water quality are highly concerned about a lot of academics and a number of departments. Water quality status and influencing factors on drinking water to seem to be particularly important.This paper aims to study water quality status and influencing factors of drinking water in Fuzhou region,we will learn through research to realize:2008-2014 water quality status and influencing factors of drinking water during the dry season in Fuzhou region;2008-2014 water quality status and influencing factors of drinking water during the wet season in Fuzhou region; water quality status in dry season comparing with water quality in wet period during 2008-2014 years;comparison of water quality status in different geographical areas in Fuzhou drinking water;Drinking water quality status trends during 2008—2014 years in Fuzhou region. Method:1.To coordinate the data of drinking water of seven years during 2008~2013 from Fuzhou disease prevention and control center.To obtain the data of 36 related examination index of the produced water,tube net end water,secondary supplying water from water works in severn years.2. After import into the excel form,judge on examing items according to various life drinking water standard.With an examination index sign unqualified for stalldard.affirm to the water sample unqualified.All statistical analyses were performed using SPSS(version 19.0).Statistics were used to describe each drinking water hygiene problem and examination index signs.3. Make comparisions to items with Chi.square test among different years or different sorts drinking water or richy water.And analyze the main influence factor of hygiene problem in drinking water and evaluate interfere measure.point out influence to the healthy in human body and discuss improvement measure.Result:1. 2008-2014 contamination of drinking water during the dry season Fuzhou region and influencing factors.The main indicators of failure and the pass rate of drinking water during the dry season in Fuzhou region are Free residual chlorine(77.0%),thermotolerant colifoms(80.5%), total coliforms(82.4 %), ammonia nitrogen(87.1%),The total number of colonies(87.3%),Iron(91.4%),Total Hardness(91.9%).The total pass rate of drinking water during seven years in Fuzhou region in dry season is 69.3%. The total pass rate of produced water during seven years in dry season is 81.7%. The total pass rate of tube net end water during seven years in dry season is 71.8%. The total pass rate of secondary supplying water during seven years in dry season is 68.2%.2. 2008-2014 contamination of drinking water during the wet season Fuzhou region and influencing factors.The main indicators of failure and the pass rate of drinking water during the wet season in Fuzhou region are Free residual chlorine(74.8%), thermotolerant colifoms(77.8%),total coliforms(79.8%),ammonia nitrogen(83.4%), The total number of colonies(84.9%), Iron(89.5%), Total Hardness(90.0%).The total pass rate of drinking water during seven years in Fuzhou region in wet season is 67.2%. The total pass rate of produced water during seven years in dry season is 75.4%. The total pass rate of tube net end water during seven years in dry season is 68.3%. The total pass rate of secondary supplying water during seven years in dry season is 65.7%.3. Water qlality status in dry season comparing with water quality status in wet period during 2008-2014 years.The total pass rate of produced water in Fuzhou region in dry season(81.7%)is significantly higher than wet season(75.4%)(χ2=4.11,P<0.05).The total pass rate of tube net end water in Fuzhou region in dry season(71.8%)is significantly higher than wet season(68.3%)(χ2=3.94,P<0.05).The total pass rate of secondary supplying water in Fuzhou region in dry season(68.2%)is significantly higher than wet season(65.7%)(χ2=3.87,P<0.05).The total pass rate of drinking water in Fuzhou region in dry season(69.3%)is significantly higher than wet season(67.2%)(χ2=4.61,P<0.05).4. Comparison of water quality status in different geographical areas in Fuzhou drinking water.The total pass rate of drinking water in Fuzhou region in plain regions(83.0%)is significantly higher than mountain regions(67.2%)(80.1%)(χ2=12.06,P<0.01).The total pass rate of drinking water in Fuzhou region in inland regions(83.5%)is significantly higher than Coastal regions(81.0%)(χ2=9.92,P<0.01).The total pass rate of drinking water in Fuzhou region in economically developed regions(82.6%)is significantly higher than economically underdeveloped regions(77.2%)(χ2=41.37,P<0.05).5. Drinking water quality status trends during 2008—2014 years in Fuzhou region.The total pass rate of drinking water showed an increasing trend in Fuzhou region.The total pass rate of produced water, tube net end water and secondary supplying water,were all showed an increasing trend in Fuzhou region.The total pass rate of produced water, tube net end water and secondary supplying water were all showed an increasing trend in Fuzhou region.The total pass rate of organoleptic,physical and disinfectants parameters,Toxicological parameters and microbiological parameters were all showed an increasing trend in Fuzhou region.Conclusion:1.The main failure indicator of drinking water in Fuzhou region are Free residual chlorine,thermotolerant colifoms,total coliforms,ammonia nitrogen,The total number of colonies, Iron,Total Hardness.2. The total pass rate of drinking water in Fuzhou region in dry season is significantly higher than wet season.3. Differences between water quality status of drinking water in different geographical areas is significantly, plain regions is significantly higher than mountain regions, inland regions is significantly higher than Coastal regions, economically developed regions is significantly higher than economically underdeveloped regions.4. The total pass rate of drinking water showed an increasing trend in Fuzhou region.5.The main reason of microbial contamination of drinking water in Fuzhou region is that a part of central water supply facilities do not effectively purify and disinfect.6.The geology construction factor result in total hardness unqualified,it is main reason that cause drinking water exceed the standard. bacteriological indicators exceed the standard is important factor of tube net end water and secondary supplying water. Tube net end water and secondary supplying water are polluted from saving and transporting process,it is main reason that bacteriological indicators exceed the standard.