Comparative Analysis of the Secondary Water Supply and Peripheral Water Monitoring from 2007 to 2012 in Zhangzhou City
Abstract：Objective:To understand the secondary water supply monitoring situation of Zhangzhou city drinking water,the unqualified items compared with peripheral water,analysis of the existing problems and put forward improvement strategies.Method:All samples were detected according to the national standard GB/T5750.4-5750.7-2006,GB/T5750.12-2006,and evaluated on the basis of GB5749-2006.Result:In the 167 secondary water supply,the qualified rate of sensory indicators,pH,oxygen consumption,ammonia nitrogen,iron,manganese,nitrite were 100%.In addition, the average qualified rate of free residual chlorine was 28.1%,total number of colonies average qualified rate was 60.5%,the total coliform bacteria average qualified rate was 94.0%.In the 1039 peripheral water,the average qualified rate of free residual chlorine was 99.8%,total number of colonies average qualified rate was 93.6%,the total coliform bacteria average qualified rate was 98.5%.Conclusion:Centralized water supply(including the finished water and tap water)at present has a higher passing rate,has been able to basically meet the requirements of GB5749-2006.But the secondary water supply as an extension of the centralized water supply,still has the existence of security risks.
Keywords：The secondary water supplyPeripheral waterMonitoring resultsQualified rate
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 66-68 )