Waste-Treatment Applications of Reverse Osmosis

Cruver, J.E.

doi:10.1115/1.3438546

Cited by 2 publications

(1 citation statement)

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“…However, extensive pretreatment and periodic cleaning are usually needed to maintain acceptable membrane water fluxes. Early studies 14,15 showed that the high removal of TDS and the moderate removal of organics can be achieved. H. Tsuge and R. Mori 16 showed that tubular membranes (with a substantial pretreatment system) can remove both the inorganic and organic pollutants from municipal secondary effluent and produce water that meets drinking-water standards.…”

Section: Municipal Wastewatermentioning

confidence: 99%

Performance of nano-filtration and reverse osmosis processes for wastewater treatment

Aljlil¹

2017

Mater. Tehnol.

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This study was carried out to evaluate the performance of nano-filtration (NF) and reverse osmosis (RO) technology for reducing the total salt concentration from waste water. The nano-filtration proved very effective in removing the polyvalent cations and anions, such as SO4 -, whereas the removal efficiency was 97.22 %. It is well known that a RO water-treatment process removes all the cations and anions from waste water or brine or sea water, especially removing the monovalent ions such as Cl -where the removal efficiency was 94.4 %. The performance efficiency of RO and NF water-treatment processes declined significantly during the first 3 years of operation due to fouling and biofouling of the membrane. The research findings provided a concrete clue for the important issue of water treatment as an alternative to existing water use methods on a cost-effective basis. The research also highlighted the potential to replace the NF and RO membranes used in these two water-treatment techniques. Keywords: desalination of waste water, reverse osmosis, nano-filtration Izvedena je bila {tudija ocene zmogljivosti tehnologije nanofiltracije (angl. NF) in povratne osmoze (angl. RO) za zmanj{anje skupne vsebnosti soli v odpadni vodi. Nanofiltracija je zelo u~inkovita pri odpravljanju polivalentnih kationov in anionov, kot so SO4 -, kjer je bila u~inkovitost odstranitve 97,22 %. Dobro je poznano, da RO postopek obdelave vode odstrani vse katione in anione iz odpadne vode, slanice ali morske vode, {e posebno monovalentni Cl -, kjer je bila u~inkovitost odstranitve 94,4 %. Zmogljivost RO in NF procesov pri obdelavi vode se ob~utno zmanj{a med prvim 3-letnim obratovanjem zaradi ma{enja in biolo{kega nalaganja na membrane. Ugotovitve raziskave omogo~ajo konkreten namig za pomembno vpra{anje obdelave vode, kot cenovno u~inkovita alternativa sedanjim metodam. Raziskava je pokazala tudi mo`nost za zamenjavo NF in RO membran, ki se jih uporablja v teh dveh na~inih obdelave vode.

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Section: Municipal Wastewatermentioning

confidence: 99%