Fresh Ideas for Fresh Water: Okeechobee Utility Authority's Surface Water Treatment Plant Uses Innovative Technology to Achieve High Quality Drinking Water from Lake Okeechobee

2006 ◽  
Vol 2006 (7) ◽  
pp. 4830-4837 ◽  
Author(s):  
Curtis Robinson ◽  
Stephen Fowler
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Surface Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Innovative Technology ◽  
Lake Okeechobee ◽  
High Quality ◽  
Surface Water Treatment ◽  
Plant Uses

Study of the Origin of Musty Taste in the Drinking Water Supply

1999 ◽  
Vol 40 (6) ◽  
pp. 171-177 ◽  
Author(s):  
A. Montiel ◽  
S. Rigal ◽  
B. Welté;
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Surface Water ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Drinking Water Supply ◽  
Low Concentration ◽  
Surface Water Treatment

During Autumn 1982, many consumers complained in Paris about a musty taste. Complaints were located only in a quarter of Paris which was supplied by a surface water treatment plant. The experiments and tests have shown that this taste appeared only in the network. Musty taste was detected neither on the river nor at the outlet of the plant. Some hypotheses have been made and experiments have been conducted later because this episode of complaints stopped suddenly. It appeared that some chlorophenols were produced in the plant. These compounds were biomethylated further by fungi in the network leading to chloroanisole which give a musty taste detectable a very low concentration.

Selection of the surface water treatment technology – a full-scale technological investigation

2014 ◽  
Vol 71 (4) ◽  
pp. 638-644 ◽  
Author(s):  
Alina Pruss
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Full Scale ◽  
Treatment Technology ◽  
Surface Water Treatment ◽  
Second Stage ◽  
Third Stage ◽  
Water Treatment Technology

A technological investigation was carried out over a period of 2 years to evaluate surface water treatment technology. The study was performed in Poland, in three stages. From November 2011 to July 2012, for the first stage, flow tests with a capacity of 0.1–1.5 m3/h were performed simultaneously in three types of technical installations differing by coagulation modules. The outcome of the first stage was the choice of the technology for further investigation. The second stage was performed between September 2012 and March 2013 on a full-scale water treatment plant. Three large technical installations, operated in parallel, were analysed: coagulation with sludge flotation, micro-sand ballasted coagulation with sedimentation, coagulation with sedimentation and sludge recirculation. The capacity of the installations ranged from 10 to 40 m3/h. The third stage was also performed in a full-scale water treatment plant and was aimed at optimising the selected technology. This article presents the results of the second stage of the full-scale investigation. The critical treatment process, for the analysed water, was the coagulation in an acidic environment (6.5 < pH < 7.0) carried out in a system with rapid mixing, a flocculation chamber, preliminary separation of coagulation products, and removal of residual suspended solids through filtration.

Removal of cyanobacteria, cyanotoxins, heterotrophic bacteria and endotoxins at an operating surface water treatment plant

2006 ◽  
Vol 54 (3) ◽  
pp. 23-28 ◽  
Author(s):  
J. Rapala ◽  
M. Niemelä ◽  
K.A. Berg ◽  
L. Lepistö ◽  
K. Lahti
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Treatment Process ◽  
Heterotrophic Bacteria ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Bacterial Isolates ◽  
Sand Filtration ◽  
Surface Water Treatment ◽  
Guide Value

The removal of cyanobacteria, hepatotoxins produced by them (microcystins), phytoplankton, heterotrophic bacteria and endotoxins were monitored at a surface water treatment plant with coagulation, clarification, sand filtration, ozonation, slow sand filtration and chlorination as the treatment process. Coagulation–sand filtration reduced microcystins by 1.2–2.4, and endotoxins by 0.72–2.0 log10 units. Ozonation effectively removed the residual microcystins. The treatment process reduced phytoplankton biomass by 2.2–4.6 and heterotrophic bacteria by 2.0–5.0 log10 units. In treated water, the concentration of microcystins never exceeded the WHO guide value (1 μg/L), but picoplankton and monad cells were often detected in high numbers. The heterotrophic bacterial isolates from the treated waters belonged to genera Sphingomonas, Pseudomonas, Bacillus, Herbaspirillum and Bosea.

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