scholarly journals Semivolatile organic compounds removal and health risk reduction in drinking water treatment biofilters applying different backwashing strategies

2012 ◽  
Vol 9 (4) ◽  
pp. 661-670 ◽  
Author(s):  
Y. Chen ◽  
X. X. Zhang ◽  
B. Wu ◽  
B. Liu ◽  
L. Xiao ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Health Risk ◽  
Risk Reduction ◽  
Organic Compounds ◽  
Drinking Water Treatment ◽  
Semivolatile Organic Compounds ◽  
Health Risk Reduction

Performance evaluation of point of use water treatment system in health risk reduction of trace metals in drinking water

2019 ◽  
Vol 139 ◽  
pp. 246-253 ◽  
Author(s):  
Salimeh Rezaienia ◽  
Simin Nasseri ◽  
Mitra Gholami ◽  
Mahdi Farzadkia ◽  
Ali Esrafili
Keyword(s):  
Drinking Water ◽  
Performance Evaluation ◽  
Water Treatment ◽  
Trace Metals ◽  
Health Risk ◽  
Risk Reduction ◽  
Treatment System ◽  
Water Treatment System ◽  
Point Of Use ◽  
Health Risk Reduction

scholarly journals Oxidation of Selected Trace Organic Compounds through the Combination of Inline Electro-Chlorination with UV Radiation (UV/ECl2) as Alternative AOP for Decentralized Drinking Water Treatment

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3275
Author(s):  
Philipp Otter ◽  
Katharina Mette ◽  
Robert Wesch ◽  
Tobias Gerhardt ◽  
Frank-Marc Krüger ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Organic Compounds ◽  
Energy Input ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
Residual Chlorine ◽  
Trace Organic Compounds ◽  
Drinking Water Standard ◽  
Trace Organic

A large variety of Advanced Oxidation Processes (AOPs) to degrade trace organic compounds during water treatment have been studied on a lab scale in the past. This paper presents the combination of inline electrolytic chlorine generation (ECl2) with low pressure UV reactors (UV/ECl2) in order to allow the operation of a chlorine-based AOP without the need for any chlorine dosing. Lab studies showed that from a Free Available Chlorine (FAC) concentration range between 1 and 18 mg/L produced by ECl2 up to 84% can be photolyzed to form, among others, hydroxyl radicals (OH) with an UV energy input of 0.48 kWh/m3. This ratio could be increased to 97% by doubling the UV energy input to 0.96 kWh/m3 and was constant throughout the tested FAC range. Also the achieved radical yield of 64% did not change along the given FAC concentration range and no dependence between pH 6 and pH 8 could be found, largely simplifying the operation of a pilot scale system in drinking water treatment. Whereas with ECl2 alone only 5% of benzotriazoles could be degraded, the combination with UV improved the degradation to 89%. Similar results were achieved for 4-methylbenzotriazole, 5-methylbenzotriazole and iomeprol. Oxipurinol and gabapentin were readily degraded by ECl2 alone. The trihalomethanes values were maintained below the Germany drinking water standard of 50 µg/L, provided residual chlorine concentrations are kept within the permissible limits. The here presented treatment approach is promising for decentralized treatment application but requires further optimization in order to reduce its energy requirements.

scholarly journals Fate of Trace Organic Compounds in Granular Activated Carbon (GAC) Adsorbers for Drinking Water Treatment

Water ◽  
2017 ◽  
Vol 9 (7) ◽  
pp. 479 ◽  
Author(s):  
Alexander Sperlich ◽  
Mareike Harder ◽  
Frederik Zietzschmann ◽  
Regina Gnirss
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Organic Compounds ◽  
Drinking Water Treatment ◽  
Granular Activated Carbon ◽  
Trace Organic Compounds ◽  
Trace Organic
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