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AG1 - WWRO Antiscalant replaces acid dosing (NEW)
Genesys PHO has been found to reduce or eliminate the need for acid dosing in high phosphate reverse osmosis feed waters, such as surface and tertiary effluent, while controlling the potential for calcium phosphate scale deposition.. |
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AG2 - Clay deposit removal from membranes (NEW)
Genesys membrane laboratories in Madrid show that the majority of deposits found on reverse osmosis membranes are clay based aluminosilicates. These deposits are difficult to remove with traditional cleaning chemicals, Genesol 703 is a speciality membrane cleaning chemical designed to effectively remove these and other deposits reducing membrane cleaning frequency and associated costs. Results of cleaning trials on actual membranes are presented.. |
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AG3 - Alternative Autopsy Techniques (NEW)
Comprehensive studies of membrane autopsy results show that 60% of failures tested in the Genesys laboratory are caused by poor
pre-treatment design and/or poor operation. Alternative cost-effective autopsy techniques allow us to optimise re-treatment dosage and design specific membrane cleaning programmes based on accurate deposit identification.. |
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AG4 - RO Pre-treatment - safe use of cationic flocculant (NEW)
Genefloc GPF is a membrane compatible low dose, poly amine cationic flocculant. The effectiveness of cationic flocculants is well known but due to the perceived danger of membrane fouling they are not widely used. This paper dispels some of the myths.. |
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Cleaning Clay from fouled membranes
Within the lifetime of most reverse osmosis (RO) systems some fouling will adversely affect membrane
performance. The major constituents of foulants found on the first position during six years
of membrane autopsy at the Genesys Membrane laboratory are .... |
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Theoretical and Practical experience of calcium phosphate inhibition in waste water RO plant
The increasing trend over the last ten years to use waste water as a feed source for reverse osmosis membrane plant has resulted in an increase in calcium phosphate scaling on membrane surfaces. This is due to ... |
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Innovations in the inhibition and cleaning of reverse osmosis mebrane scaling and fouling
Scaling and fouling of membranes are an on-going performance issue for most plants. This presentation outlines innovations in speciality chemicals designed to ..... |
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Simple laboratory techniques to improve the operation of RO pre-treatment systems
Membranes failures are often caused by poor pre-treatment design and/or poor operation. Systems are frequently designed and built without a clear understanding of the chemistry of the feed water ..... |
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Problems of operation and main reasons for failure of membrane in tertiary treatment systems
This paper presents and discuss the results of the long term operation and monitoring of membrane fouling at several full-scale MF/RO water recycling facilities operated by Agbar in Spain. It was
demonstrated that membranes are.... |
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Cost saving case study using a calcium sulphate specific antiscalant
Extensive extraction from aquifers often leads to deterioration in water quality. This is usually seen as
an increase in the soluble salt levels which, over time, has a detrimental effect on membrane
performance. A limiting factor.... |
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The safe use of cationic flocculants with reverse osmosis membranes
Flocculants are used in combination with coagulants to agglomerate suspended particles for removal by filtration. This technique is used extensively.... |
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Practical experience with high silica concentration in RO water
Silica chemistry is very complex. Silica can be found on the surface of reverse osmosis membranes in a polymeric or crystalline form...... |
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