Characteristics of pipe corrosion scales in untreated water distribution system and effect on water quality in Peshawar, Pakistan

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Characteristics of pipe corrosion scales in untreated water distribution system and effect on water quality in Peshawar, Pakistan
	Shams, Dilawar Farhan ; Islam, Saeed ; Shi, Baoyou ; Khan, Waliullah ; Gunawardana, Buddhika ; Saad, Maryam ; Qasim, Muhammad ; Javed, Haider Ali ; Afridi, Sahib Gul ; Naeem, Muhammad
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2019-02
卷号	26 期号:6 页码:5794-5803
关键词	Corrosion scales Drinking water Water quality Composition Dissolution Microorganisms
ISSN号	0944-1344
英文摘要	This study investigated the characteristics of iron corrosion scales in pipes at tube well, overhead tank, and consumers' end in older untreated water distribution system in Peshawar city, Pakistan. Effect of water quality conditions on corrosion scales and that of scales on drinking water quality in such systems was also assessed by undertaking a comparison with new piped distribution systems. The scales were analyzed for chemical composition and morphology using X-ray diffraction (XRD), inductively coupled plasma (ICP), and a scanning electron microscope (SEM), while water quality was examined for physicochemical and biological characteristics. The main crystalline phases of corrosion scales were goethite, magnetite, siderite, and quartz. From tube well to consumers' end, goethite increased from 36 up to 48%, quartz declined from 22 to 15%, while magnetite fluctuated and siderite disappeared. Elemental composition of scales showed the deposition of Zn, Al, Mn, Cr, Pb, Cu, As, and Cd with Zn (13.9g/kg) and Al (3.6g/kg) in highest proportion. The SEM analysis illustrated the presence of microbial communities indicating the formation of biofilms in the corrosion scales. The significant difference (P<0.05) in levels of dissolved oxygen (DO), Cl-, SiO44-, electrical conductivity (EC), SO42-, NO3-, alkalinity, hardness, and trace metals between old (DS-O) and new piped systems indicated their role in corrosion scale formation/destabilization and the effect of scale dissolution on water quality. In DS-O, EC, Cu, and Mn were significantly higher (P<0.05), whereas turbidity, EC, DO, and SiO44- significantly increased from source to consumers' end implying a higher dissolution of scales and lowered corrosion rates in DS-O to utilize SiO44- and DO for iron oxidation.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43069]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Abdul Wali Khan Univ Mardan, Dept Environm Sci, Mardan 23200, Pakistan 3.Abdul Wali Khan Univ Mardan, Dept Biochem, Mardan 23200, Pakistan 4.Univ Moratuwa, Dept Civil Engn, Moratuwa 10400, Sri Lanka 5.Abdul Wali Khan Univ Mardan, Dept Chem, Mardan 23200, Pakistan
推荐引用方式 GB/T 7714	Shams, Dilawar Farhan,Islam, Saeed,Shi, Baoyou,et al. Characteristics of pipe corrosion scales in untreated water distribution system and effect on water quality in Peshawar, Pakistan[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2019,26(6):5794-5803.
APA	Shams, Dilawar Farhan.,Islam, Saeed.,Shi, Baoyou.,Khan, Waliullah.,Gunawardana, Buddhika.,...&Khan, Gul Shahzada.(2019).Characteristics of pipe corrosion scales in untreated water distribution system and effect on water quality in Peshawar, Pakistan.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,26(6),5794-5803.
MLA	Shams, Dilawar Farhan,et al."Characteristics of pipe corrosion scales in untreated water distribution system and effect on water quality in Peshawar, Pakistan".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26.6(2019):5794-5803.