Water Science and Technology: Water Supply

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Impacts of pH-dependent metal speciation on the decomposition of triclosan by sulfate radicals
Water Science and Technology: Water Supply - Tập 12 Số 6 - Trang 837-843 - 2012
Prince Nfodzo, Qinhong Hu, Hyeok Choi
The presence of triclosan (TCS) in water resources has drawn significant attention due to its endocrine disruption potential. Sulfate radicals (SRs), generated particularly by the metal-mediated activation of peroxymonosulfate (PMS), have been proposed to effectively decompose TCS and many other pharmaceuticals and personal care products. In spite of its significance for understanding the ...... hiện toàn bộ
Antibiotics in groundwater under locations with high livestock density in Germany
Water Science and Technology: Water Supply - Tập 16 Số 5 - Trang 1361-1369 - 2016
Frederike Balzer, Sebastian Zühlke, Stephan Hannappel
Antibiotics are deployed in large quantities both in human and in veterinary medicine. Studies show that antibiotic residues occur in the environment (e.g. soil and surface waters). In some cases they were also detected in ground and drinking water. However, the degree of groundwater pollution by antibiotic residues from livestock farming is unknown. Therefore, the federal environment agen...... hiện toàn bộ
Oxidized fulvic acid adsorption on activated carbon
Water Science and Technology: Water Supply - Tập 14 Số 2 - Trang 238-245 - 2014
Ivan Kozyatnyk, Joanna Świetlik, U. Raczyk-Stanisławiak, N. A. Klymenko, J. Nawrocki
This study evaluates and compares the parameters of equilibrium adsorption from aqueous solutions of river fulvic acids (FA) and peat fulvic acids. Compared to peat FA, the river FA had lower biodegradable dissolved organic carbon (BDOC). We observed a tendency for correlation between change of Gibbs free energy of adsorption and BDOC value. A chlorination dose of 1.4 mg L−1 did not change...... hiện toàn bộ
Rethinking urban areas: an example of an integrated blue-green approach
Water Science and Technology: Water Supply - Tập 13 Số 6 - Trang 1534-1542 - 2013
Evangelos Rozos, Christos Makropoulos, Č. Maksimović
The provision of high quality urban water services, the assets of which are often conceptualised as ‘blue infrastructure’, is essential for public health and quality of life in the cities. On the other hand, parks, recreation grounds, gardens, green roofs and in general ‘green infrastructure’, provide a range of (urban) ecosystem services (including quality of life and aesthetics) and coul...... hiện toàn bộ
Preservation of reverse osmosis membranes with non oxidizing biocides – comparison with SMBS
Water Science and Technology: Water Supply - Tập 11 Số 3 - Trang 342-351 - 2011
Katariina Majamaa, Ute Bertheas, F. Finlayson, Richard Levy
Sodium metabisulphite (SMBS) is the current standard preservation chemical used in RO plants during shut down. It is a cheap and efficient preservative, but its tendency to oxidize easily has several drawbacks. The use of a non-oxidizing biocide instead could solve some of the issues currently seen with the SMBS, but little has been reported about membrane compatibility and preservation ef...... hiện toàn bộ
Coupled coordination of water resources–economy–ecosystem complex in the Henan section of the Yellow River basin
Water Science and Technology: Water Supply - Tập 22 Số 12 - Trang 8835-8848 - 2022
Shunsheng Wang, Jinyue Yang, Aili Wang, Yongfang Yan, Tengfei Liu
Abstract This study investigates the coordination of factors in the three coupled systems of water resources, economy and ecosystem. The study data were economic, social, environmental and water resource indicators of the Henan section of the Yellow River basin from 2000 to 2019. Data were analyzed using a model of coupling coordination, grey relatio...... hiện toàn bộ
Hydrogeochemical evolution under a changing environment: a case study in Jilin, China
Water Science and Technology: Water Supply - Tập 20 Số 5 - Trang 1653-1663 - 2020
Mingqian Li, Changlai Xiao, Xiujuan Liang, Yuqing Cao, Shuya Hu
Abstract Groundwater is an important component of the global water cycle, and acts as a receptor and information carrier of global environmental changes. Therefore, it is of great importance to research the chemical evolution of groundwater under a changing environment. Historical data shows that groundwater hydrochemical types are becoming more comp...... hiện toàn bộ
Impact of irrigation water scarcity on rural household food security and income in Pakistan
Water Science and Technology: Water Supply - Tập 16 Số 3 - Trang 675-683 - 2016
Dil Bahadur Rahut, Akhter Ali, Muhammad Imtiaz, Khondoker Abdul Mottaleb, Olaf Erenstein
As Pakistan is currently facing a severe shortage of irrigation water, this paper analyzes the determinants of water scarcity and its impact on the yield of cereal crops (wheat, maize and rice), household income, food security and poverty levels by employing the propensity-score-matching approach. This study is based on a comprehensive set of cross-sectional data collected from 950 farmers...... hiện toàn bộ
Competitive mechanism of ammonia, iron and manganese for dissolved oxygen using pilot-scale biofilter at different dissolved oxygen concentrations
Water Science and Technology: Water Supply - Tập 16 Số 3 - Trang 766-774 - 2016
Qingfeng Cheng
In this study, the competitive mechanism of ammonia, iron and manganese for dissolved oxygen (DO) in a biofilter was investigated, and a new start-up method of a biofilter for ammonia, iron and manganese removal was approved, which can effectively shorten the start-up period from 3–4 months to 51 days. The results demonstrated that when DO was sufficient (about 8 mg · L−1), ammonia, iron a...... hiện toàn bộ
Natural organic matter fouling and chemical cleaning of nanofiltration membranes
Water Science and Technology: Water Supply - Tập 4 Số 5-6 - Trang 245-251 - 2004
Qilin Li, Menachem Elimelech
Fouling and subsequent chemical cleaning are two important issues for sustainable operation of nanofiltration (NF) membranes in water quality control applications. Because fouling strongly depends on the feed water quality, especially the ionic composition, chemical cleaning solutions should be chosen to target the solution chemistry that is most responsible for the formation of a compact,...... hiện toàn bộ
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