Occurrence of Organic Compounds in Source and Finished Samples from Seven Drinking-Water Treatment Facilities in Miami-Dade County, Florida, 2008

Data Series ◽  
10.3133/ds550 ◽  
2010 ◽  
Author(s):  
Adam L. Foster ◽  
Brian G. Katz
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Organic Compounds ◽  
Drinking Water Treatment ◽  
Dade County ◽  
Treatment Facilities

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.

Drinking water treatment plant assessment through performance indicators

2008 ◽  
Vol 8 (3) ◽  
pp. 245-253 ◽  
Author(s):  
P. Vieira ◽  
H. Alegre ◽  
M. J. Rosa ◽  
H. Lucas
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Performance Assessment ◽  
Performance Indicators ◽  
Raw Materials ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Treatment Facilities ◽  
Definition Of

Performance assessment (PA) of urban infrastructure services, mainly in the case of water systems, is becoming a major issue worldwide. Therefore, in the last decade, the need for a clear definition of management objectives of water services and the subsequent need to monitor goals achievement have led to the development of some initiatives to tackle the evaluation of the efficiency of those services, their main aim being the definition of systems of performance indicators. However, these PA systems are strongly oriented by a management/economic perspective and technical aspects have often been ignored. In addition, none of them has specifically addressed the drinking water treatment. This paper presents a proposal for a PI system that applies to drinking water treatment facilities as a part of a standardised methodology for performance assessment. In total, ca. 80 PI have been defined and classified according to seven evaluation domains, namely: treated water quality; plant reliability; use of natural resources and raw materials; by-products management; safety; human resources; and, economical and financial resources.

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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