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Optimizing NOM Removal: Impact of Calcium Chloride
Malmö universitet, Fakulteten för teknik och samhälle (TS), Institutionen för datavetenskap och medieteknik (DVMT). Vatteninfo Sverige AB.
Lund University; Sweden Water Research AB.
TETRA Chemicals Europe AB.
2021 (engelsk)Inngår i: Sustainability, E-ISSN 2071-1050, Vol. 13, nr 11, artikkel-id 6338Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Understanding the character of natural organic matter (NOM) and assessing its impact on water quality is paramount for managers of catchments and water utilities. For drinking-water producers, NOM affects disinfectant demand and the formation of by-products which can have adverse health effects. NOM content in raw waters also has an impact on water treatment processes by increasing required coagulant dosages, reducing the effectiveness of adsorption processes and fouling membrane systems. This study investigated the effects of calcium chloride (CaCl2) as a co-coagulant in Al3+ and Fe3+ assisted coagulation, flocculation and sedimentation processes for NOM-removal from raw water collected from Lake Bolmen, in southern Sweden. Jar tests were conducted at Ringsjo Water Works (WW), a surface water treatment plant (WTP), to investigate the potential reduction in primary coagulants aluminum sulphate (Al-2(SO4)(3)) and ferric chloride (FeCl3). This work shows that CaCl2 can, in certain situations, reduce the need for primary coagulants, which would reduce the environmental impact and costs associated with primary coagulant consumption.

sted, utgiver, år, opplag, sider
MDPI, 2021. Vol. 13, nr 11, artikkel-id 6338
Emneord [en]
NOM, coagulation, flocculation, Lake Bolmen, aluminum sulphate, ferric chloride, calcium chloride, raw water
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Identifikatorer
URN: urn:nbn:se:mau:diva-43933DOI: 10.3390/su13116338ISI: 000660715100001Scopus ID: 2-s2.0-85107702078OAI: oai:DiVA.org:mau-43933DiVA, id: diva2:1570755
Tilgjengelig fra: 2021-06-22 Laget: 2021-06-22 Sist oppdatert: 2024-06-18bibliografisk kontrollert

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Gonzalez-Perez, Alfredo

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