Arid
DOI10.1016/j.scitotenv.2011.12.005
The impacts of low-cost treatment options upon scale formation potential in remote communities reliant on hard groundwaters. A case study: Northern Territory, Australia
Kinsela, Andrew S.1; Jones, Adele M.1; Collins, Richard N.1,2; Waite, T. David1
通讯作者Kinsela, Andrew S.
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2012
卷号416页码:22-31
英文摘要

The majority of small, remote communities within the Northern Territory (NT) in Central Australia are reliant on groundwater as their primary supply of domestic, potable water. Saturation indices for a variety of relevant minerals were calculated using available thermodynamic speciation codes on collected groundwater data across the NT. These saturation indices were used to assess the theoretical formation of problematic mineral-scale, which manifests itself by forming stubborn coatings on domestic appliances and fixtures. The results of this research show that 63% of the measured sites within the NT have the potential to form calcium carbonate (CaCO3) scale, increasing to 91% in arid, central regions. The data also suggests that all groundwaters are over-saturated with respect to amorphous calcium-bridged ferric-silica polymers, based on the crystalline mineral index (Ca3Fe2Si3O12), although the quantitative impact of this scale is limited by low iron concentrations. An assessment of possible low-cost/low-technology management options was made, including: lowering the temperature of hot-water systems, diluting groundwater with rainwater and modifying the pH of the source water. Source water pH modification (generally a reduction to pH 7.0) was shown to clearly alleviate potential carbonate-based scale formation, over and above the other two options, albeit at a greater technical and capital expense. Although low-cost/low-technology treatment options are unlikely to remove severe scale-related issues, their place in small, remote communities with minor scale problems should be investigated further, owing to the social, technical and capital barriers involved with installing advanced treatment plants (e.g. reverse osmosis) in such locations. (C) 2011 Elsevier B.V. All rights reserved.


英文关键词Saturation index Calcium carbonate Metal silicate Hard groundwater Water treatment
类型Review
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000301155200002
WOS关键词REVERSE-OSMOSIS DESALINATION ; POWERED MEMBRANE TECHNOLOGY ; CALCIUM-CARBONATE ; MAGNETIC-FIELD ; DRINKING-WATER ; PRECIPITATION ; ALUMINUM ; UNIT ; ANTISCALANT ; INHIBITION
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/174960
作者单位1.Univ New S Wales, Sch Civil & Environm Engn, UNSW Water Res Ctr, Sydney, NSW 2052, Australia;
2.Australian Nucl Sci & Technol Org, Inst Environm Res, Kirrawee Dc, NSW 2232, Australia
推荐引用方式
GB/T 7714
Kinsela, Andrew S.,Jones, Adele M.,Collins, Richard N.,et al. The impacts of low-cost treatment options upon scale formation potential in remote communities reliant on hard groundwaters. A case study: Northern Territory, Australia[J],2012,416:22-31.
APA Kinsela, Andrew S.,Jones, Adele M.,Collins, Richard N.,&Waite, T. David.(2012).The impacts of low-cost treatment options upon scale formation potential in remote communities reliant on hard groundwaters. A case study: Northern Territory, Australia.SCIENCE OF THE TOTAL ENVIRONMENT,416,22-31.
MLA Kinsela, Andrew S.,et al."The impacts of low-cost treatment options upon scale formation potential in remote communities reliant on hard groundwaters. A case study: Northern Territory, Australia".SCIENCE OF THE TOTAL ENVIRONMENT 416(2012):22-31.
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