Corrigendum: Water Science and Technology: Water Supply 14(4), 532–539: Comparison of sand and membrane filtration as non-chemical pre-treatment strategies for pesticide removal with nanofiltration/low pressure reverse osmosis membranes, Krzysztof P. Kowalski, Henrik T. Madsen and Erik G. Søgaard

2014 ◽  
Vol 14 (5) ◽  
pp. 938-938
Keyword(s):  
Water Supply ◽  
Reverse Osmosis ◽  
Membrane Filtration ◽  
Science And Technology ◽  
Treatment Strategies ◽  
Low Pressure ◽  
Pesticide Removal ◽  
Water Science ◽  
Pre Treatment ◽  
Reverse Osmosis Membranes

Comparison of sand and membrane filtration as non-chemical pre-treatment strategies for pesticide removal with nanofiltration/low pressure reverse osmosis membranes

2014 ◽  
Vol 14 (4) ◽  
pp. 532-539 ◽  
Author(s):  
Krzysztof P. Kowalski ◽  
Henrik T. Madsen ◽  
Erik G. Søgaard
Keyword(s):  
Organic Matter ◽  
Reverse Osmosis ◽  
Membrane Filtration ◽  
Treatment Strategies ◽  
Low Pressure ◽  
Sand Filtration ◽  
Sand Filter ◽  
Pesticide Removal ◽  
Pre Treatment ◽  
Uf Membranes

Pilot plant investigations of sand and membrane filtration (microfiltration (MF)/ultrafiltration (UF)/nanofiltration (NF)/low pressure reverse osmosis (LPRO)) have been performed to treat groundwater polluted with pesticides. The results show that simple treatment, with use of aeration and sand filtration or MF/UF membranes, does not remove pesticides. However, by reducing the content of key foulants, the techniques can be used as a pre-treatment for nanofiltration and low pressure reverse osmosis that has proved to be capable of removing pesticides. It was found that a lower fouling potential could be obtained by using the membranes, but that sand filter was better at removing manganese and dissolved organic matter. The results indicate that combining aeration, sand filtration and membrane techniques might be a good option for pesticide removal without any addition of chemicals and minimized membrane maintenance.

Leading the City of Baltimore into the 21st Century: Flexible Treatment Solutions and Integrated Raw Water Management

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
J. L. Manuszak ◽  
M. MacPhee ◽  
S. Liskovich ◽  
L. Feldsher
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Water Supply ◽  
Conceptual Design ◽  
Membrane Filtration ◽  
Treatment Plant ◽  
Low Pressure ◽  
Management Tool ◽  
Raw Water ◽  
The City

The City of Baltimore, Maryland is one of many US cities faced with challenges related to increasing potable water demands, diminishing fresh water supplies, and aging infrastructure. To address these challenges, the City recently undertook a $7M study to evaluate water supply and treatment alternatives and develop the conceptual design for a new 120 million gallon per day (MGD) water treatment plant. As part of this study, an innovative raw water management tool was constructed to help model source water availability and predicted water quality based on integration of a new and more challenging surface water supply. A rigorous decision-making approach was then used to screen and select appropriate treatment processes. Short-listed treatment strategies were demonstrated through a year-long pilot study, and process design criteria were collected in order to assess capital and operational costs for the full-scale plant. Ultimately the City chose a treatment scheme that includes low-pressure membrane filtration and post-filter GAC adsorption, allowing for consistent finished water quality irrespective of which raw water supply is being used. The conceptual design includes several progressive concepts, which will: 1) alleviate treatment limitations at the City's existing plants by providing additional pre-clarification facilities at the new plant; and 2) take advantage of site conditions to design and operate the submerged membrane system by gravity-induced siphon, saving the City significant capital and operations and maintenance (O&M) costs. Once completed, the new Fullerton Water Filtration Plant (WFP) will be the largest low-pressure membrane plant in North America, and the largest gravity-siphon design in the world.

Pesticides removal performance by low-pressure reverse osmosis membranes

2006 ◽  
Vol 102 (4) ◽  
pp. 3575-3579 ◽  
Author(s):  
A. Bhattacharya ◽  
P. Ray ◽  
H. Brahmbhatt ◽  
K. N. Vyas ◽  
S. V. Joshi ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Low Pressure ◽  
Reverse Osmosis Membranes

scholarly journals Distribution and Diffusion Behaviors of Perfluorinated Compounds with Low Pressure Reverse Osmosis Membranes

2012 ◽  
Vol 10 (4) ◽  
pp. 449-461 ◽  
Author(s):  
Xiaming CHEN ◽  
Hiroaki OZAKI ◽  
Rabindra Raj GIRI ◽  
Shogo TANIGUCHI ◽  
Ryohei TAKANAMI
Keyword(s):  
Reverse Osmosis ◽  
Low Pressure ◽  
Perfluorinated Compounds ◽  
And Diffusion ◽  
Diffusion Behaviors ◽  
Reverse Osmosis Membranes

Effects of the pre-treatment alternatives on the treatment of oil-gas field produced water by nanofiltration and reverse osmosis membranes

2013 ◽  
Vol 88 (8) ◽  
pp. 1576-1583 ◽  
Author(s):  
Hale Ozgun ◽  
Mustafa Evren Ersahin ◽  
Selime Erdem ◽  
Burcu Atay ◽  
Borte Kose ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Produced Water ◽  
Gas Field ◽  
Pre Treatment ◽  
Treatment Alternatives ◽  
Oil Gas ◽  
Reverse Osmosis Membranes
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