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  • Removal of natural organic matter by ultrafiltration and ...

    2004-10-10u2002·u2002Removal of natural organic matter by ultrafiltration and nanofiltration for drinking water production ... The main objective in applying the NF process as a final step in surface water treatment is the removal of NOM and bacteria in order to reduce post-disinfection and bacterial regrowth in the distribution network. ... NF 45 chemically ...

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  • Ultrafiltration, Nanofiltration and Reverse Osmosis — Safe ...

    2016-12-4u2002·u2002Ultrafiltration removes bacteria, protozoa and some viruses from the water. Nanofiltration removes these microbes, as well as most natural organic matter and some natural minerals, especially divalent ions which cause hard water. Nanofiltration, however, does not remove dissolved compounds. Reverse osmosis removes turbidity, including microbes ...

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  • Removal of Bacteria and Organic Carbon by an Integrated ...

    2020-9-4u2002·u2002Fouling caused by organic matter and bacteria remains a significant challenge for the membrane-based desalination industry. Fouling decreases the permeate quality and membrane performance and also increases energy demands. Here, we quantified the amount of organic matter and bacteria at several stages along the water-treatment train of an integrated ultrafiltration…

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  • Removal of pathogens by ultrafiltration from sea water ...

    2020-9-1u2002·u2002Among water treatment processes, ultrafiltration is known to be efficient for the elimination of micro-organisms (bacteria and viruses). In this study, two pathogens were targeted, a bacterium, Vibrio aestuarianus and a virus, OsHV-1, with the objective to produce high quality water from seawater, in the case of shellfish productions. The retention of those microorganisms by ultrafiltration ...

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  • Removal of particles, bacteria and parasites with ...

    1998-9-20u2002·u2002After more than 2 years operation of four pilot plants, with five modules of micro- and ultrafiltration, it was proved that at correct operation, in spite of fluctuations in raw water quality, the complete and safe removal of bacteria, parasites and particles with running costs including membrane replacement of <0.1 DM/m 3 treated water can be achieved.

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  • Removal of antibiotic-resistant bacteria (ARBs) by ...

    2020-10-26u2002·u2002Ultrafiltration membranes associated with in-line coagulation and hydraulic flocculation were applied for antibiotic-resistant bacteria removal during Nervión river water potabilization. The study was conducted at pilot scale with an ultrafiltration module equipped with three hollow fibre polyvinylidenefluoride membranes (0.04 μm nominal pore size) with in-line precoagulation–flocculation ...

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  • Ultrafiltration - an overview

    Rajindar Singh, Nicholas P. Hankins, in Emerging Membrane Technology for Sustainable Water Treatment, 2016. 2.3.3 Ultrafiltration and Microfiltration. UF membrane separation falls between NF and MF with a pore size range of 0.001–0.05 μm (Table 2.1).The pore size of an MF membrane is in the range of 0.05–10 μm.Both UF and MF membranes are porous in nature, but UF membranes virtually ...

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  • Changes in rearing water microbiomes in RAS induced by ...

    2021-10-30u2002·u2002Membrane ultrafiltration in RAS operated at high organic loading stabilized the water microbiomes • Mycobacterium and Spartobacteria dominated the water microbiomes in cRAS at high organic loading. Bacilli, Firmicutes, and a commensal Carnobacterium dominated hindgut microbiomes of salmon parr. At high organic loading, the bacterial communities in RAS water influenced the parr gut …

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  • Membrane filtration for removal of fine solids from ...

    The MDR consisted of a reactor with an ultrafiltration membrane unit for removal of micro-particles (e.g. sludge flocs, bacteria and parasites). ... of organic matter removal on physicochemical ...

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  • Membrane technology for surface water treatment ...

    2017-9-13u2002·u2002The high removal efficiency of organic matter and ammonium nitrogen in the BDDMR was attributed to diatomite adsorption, dynamic membrane interception, and microbial degradation. Among these, the biodegradation by bio-diatomite mixed liquor was the primary method for pollutant removal.

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