Reuse of filter backwash water by implementing ultrafiltration technology

2001 ◽  
Vol 1 (5-6) ◽  
pp. 207-214
Author(s):  
A. Brügger ◽  
K. Voßenkaul ◽  
T. Melin ◽  
R. Rautenbach ◽  
B. Golloing ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Pilot Study ◽  
Membrane Filtration ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Full Scale ◽  
Water Filters ◽  
Filter Backwash Water

Membrane filtration allows safe retention of microorganisms when treating filter backwash water from conventional drinking water filters. The permeate of the membrane plant can thus be reused to produce drinking water. The benefits are a higher yield of the drinking water treatment plant and a minimised wastewater production. This paper discusses the results of a pilot study, cost data and full-scale operation experiences concerning the application of ultrafiltration to treat filter backwash water. The effectiveness of ultrafiltration was assessed with regard to flux, cost and permeate quality.

Characterization of bacterial community dynamics in a full-scale drinking water treatment plant

2017 ◽  
Vol 51 ◽  
pp. 21-30 ◽  
Author(s):  
Cuiping Li ◽  
Fangqiong Ling ◽  
Minglu Zhang ◽  
Wen-Tso Liu ◽  
Yuxian Li ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Bacterial Community ◽  
Community Dynamics ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Full Scale ◽  
Bacterial Community Dynamics

scholarly journals Occurrence of titanium dioxide nanoparticle in Taihu Lake (China) and its removal at a full-scale drinking water treatment plant

2021 ◽  
Author(s):  
Zhiyuan Liu ◽  
Min Rui ◽  
Shuili Yu
Keyword(s):  
Drinking Water ◽  
Titanium Dioxide ◽  
Water Treatment ◽  
Taihu Lake ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Water Source ◽  
Full Scale ◽  
Titanium Dioxide Nanoparticle

Abstract The occurrence of titanium dioxide nanoparticle (TNP), an emerging contaminant, in Taihu Lake of China was investigated. Ti was present at a concentration of 224 ± 59 µg/L in the water source of east Taihu Lake. Approximately 0.19% of the Ti-containing matter was at the nano-scale. Scanning Electron Microscope analysis verified the existence of Ti-containing components, such as TiOX and FeTiOX. Furthermore, Ti K-edge X-ray absorption near-edge structure spectroscopy was used to detect the phase composition of nano-scaled Ti-containing matter. The spectra showed the three characteristic peaks of TiO2 in the samples, suggesting the occurrence of TNP in Taihu Lake. A least-squares linear combination fitting analysis indicated that the TNP concentration in the water source was 0.86 µg/L, with a crystal composition of 0.44 ± 0.1 µg/L amorphous, 0.14 ± 0.03 µg/L anatase and 0.28 ± 0.06 µg/L rutile. The removal performance of the TNP at a full-scale conventional drinking water treatment plant indicated that 58.8% of TNP was removed via coagulation/sediment, sand filtration and disinfection/clear water reservoir. The coagulation/sediment process accounted for approximately 76.6% of the total removed TNP. The finished water contained 0.33 µg/L TNP with a crystal composition of 0.24 ± 0.13 µg/L anatase and 0.09 ± 0.05 µg/L rutile. This study is the first that reported the presence and transport of TNP in a drinking water treatment system.

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