membrane cleaning chemical Articles

  • Membrane chemical cleaning: from art to science

    Membrane chemical cleaning is an integral part of operation for micro- and ultrafiltration systems in the water industry and has significant impact on process operations. However, this issue has not been adequately addressed primarily for two reasons: 1) cleaning protocols are typically recommended from membrane manufacturers and some cleaners are proprietary; 2) the issues of membrane fouling ...


    By Pall Corporation

  • Enhanced membrane bioreactor process without chemical cleaning

    In membrane bioreactors (MBR) for wastewater treatment, the separation of activated sludge and treated water takes place by membrane filtration. Due to the small footprint and superior effluent quality, the number of membrane bioreactors used in wastewater treatment is rapidly increasing. A major challenge in this process is the fouling of the membranes which results in permeability decrease and ...


    By IWA Publishing

  • The Chemistry of Membrane Cleaning

    International Products Corporation (IPC), incorporated in 1923, manufactures specialty chemicals. IPC has over 30 years experience making and selling membrane cleaners and formulated lubricants to industry. IPC is the proud recipient of the 2013 Environmental Innovation award by the Suppliers Partnership for the Environment. All products are manufactured in the New Jersey headquarters and are ...

  • INNOVATIVE CHEMICALS FOR DETERIORATED RO MEMBRANES

    The new rejuvenation chemical treatment is introduced in this paper. This chemical treatment repairs the deteriorated RO membranes, and recovers the salt rejection ratio immediately. In the past, such kind of rejuvenation methods have been developed and reported only with table test basis and pilot plant test basis as seen in the IVREFERENCES ...


    By Kurita

  • Cleaning clay (aluminosilicates) from fouled membranes

    Abstract 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 clay minerals chemically known as aluminosilicates. Clay is a naturally occurring material found in all RO feed waters ...

  • Membrane cleaning skids prolong operating life of costly membrane filtration units

    Considered one of the most important and costly components of a reverse osmosis purification system, membrane filtration elements (a thin semi-permeable layer which desalinates seawater) collect mineral buildup, organic materials and bacterial agents. The Lifestream Membrane Cleaning Skid cleans, flushes out and preserves the membrane, reviving efficiency and prolonging membrane life.Designing a ...

  • Chemical wastewater treatment applying a membrane bioreactor (MBR)

    IntroductionAt the current time Membrane Bioreactors (MBR) are the primary focus of wastewater treatment technologies. MBR is a combination of biological activated sludge process for the removal of nutrients and a membrane filtration for separation of biomass and treated water. In industrial wastewater treatment MBRs have proven to be a particularly reliable technique [Cornel et al., 2006]. The ...


    By MICRODYN-NADIR GmbH

  • Genairclean RO membrane cleaning - Case Study

    Trial Period September 2013 to May 2014 Site Water Reuse system, UK Background A Brackish Water Reverse Osmosis (BWRO) system with a history of rapid and consistent membrane fouling was selected to trial the new ‘Genairclean’ micro-bubble multi-mechanism RO membrane cleaning method. The plant reclaims process ...

  • Air bubbles enhance membrane cleaning: a future perspective

    Abstract Air bubbles generated using a novel micro-bubble generator have displayed a dramatic enhancement in cleaning efficiency when used in conjunction with specially formulated cleaning chemicals. In order to establish the effect of this application on membrane performance, a series of experiments were conducted using both a flat sheet test rig and a small scale pilot plant. ...

  • Fouling and cleaning of seawater reverse osmosis membranes in Kalpakkam nuclear desalination plant

    A seawater reverse osmosis plant of 1800 m³/day capacity is part of the 6300 ³/day capacity nuclear desalination demonstration project at Kalpakkam. The plant was commissioned in October 2002 and is in continuous operation. This paper deals with types of foulants, membrane cleaning procedures and the improvement in the reverse osmosis system after cleaning. This paper also describes the analysis ...


    By Inderscience Publishers

  • Microbubble RO membrane cleaning reduces fouling on WWRO plant.

    Over the last ten years there have been significant developments in new devices for energy recovery, new membrane materials, and new sizes and orientations of reverse osmosis (RO) plants, all designed to reduce costs and improve efficiency. The fundamental issue of keeping membrane surfaces clean to ensure efficient RO plant operation has seen relatively few recent developments. This is ...

  • A study of the physical and chemical damage on reverse osmosis membranes detected by autopsies

    Abstract Water treatment by reverse osmosis technology has as main aim to reject the maximum percentage of ions from raw water, giving as much treated water flow as possible. When there is a loss in these two parameters performance, it is essential to find the source of the failure, in order to use the necessary tools for its recovery. At this point, membrane autopsies are a very ...

  • Atomic force microscopy (AFM) analysis of cleaned and fouled nanofiltration membranes

    In membrane process industries, membrane cleaning is one of the most important concerns from both economical and scientific points of view. Surfaces roughness and phase angle of virgin and fouled membranes were measured and compared before and after chemical cleaning by using atomic force microscopy (AFM). Correlations between the data obtained by this technique (AFM) with the flux and rejection ...


    By Inderscience Publishers

  • Membrane Bioreactor Pilot

    The problem A company which produces a product that requires a constant supply of relatively clean water is planning to expand by adding new process units online.  The plant currently uses well water as a supply to its production.  The water production from the well is limited.  They need to install a system to produce reuse water to reduce the amount of water required ...


    By Dynatec Systems Inc.

  • A clean sweep

    When properly selected and applied, oil skimmers are a highly economical solution for sepaeating oil from water to allow its reuse or safe disposal. How Oil SkimmersWorkOil skimmees are simple, dependable and effective tonis for removing oil, grease and otherhydroearbono from water and can pay for themselveo within a few months.  Ah oil skimmers rely on the fluid properties of specific ...


    By Abanaki Corporation

  • Research Papers: Air Bubbles enhance membrane cleaning: a future perspective - Case Study

    Click here for the full dowloadable paper.  Air bubbles generated using a novel micro-bubble generator have displayed a dramatic enhancement in cleaning efficiency when used in conjunction with specially formulated cleaning chemicals. In order to establish the effect of this application on membrane ...

  • RO membrane cleaning using microbubbles at 6,800m3/day Wastewater RO Plant in UAE.

    It is well known that any fouling of the membrane surface has a dramatic effect on energy consumption and plant efficiency; this is particularly true for waste water RO plants due to the higher fouling rate. Such fouling can be very difficult to clean using commodity chemicals or even speciality chemicals. This paper explores the use of a novel cleaning process designed to increase the ...

  • Treating Industrial Water with Membrane Technology

    A variety of industries are finding that it makes sense to reevaluate the way they treat industrial process water, both to improve the quality of their products and increase the efficiency of their processes. Purification systems utilizing crossflow membrane filtration, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF) can be a good alternative to traditional filtration ...


  • Comparison of NF membrane fouling and cleaning by two pretreatment strategies for the advanced treatment of antibiotic production wastewater

    The nanofiltration (NF) membrane fouling characteristics and cleaning strategies were investigated and compared for treating membrane bioreactor (MBR) effluent and MBR-granular activated carbon (GAC) effluent of an antibiotic production wastewater by DK membrane. Results showed that the fouling of treating MBR effluent was more severe than that of treating MBR-GAC effluent. After filtering for ...


    By IWA Publishing

  • RO membrane cleaning past, present, future - innovations for improving RO plant operating efficiency

    Abstract This paper reviews current thinking on reverse osmosis (RO) membrane cleaning. It challenges preconceptions and describes novel approaches for the removal of foulants and scale deposits from membrane surfaces. Applying membrane cleaning early in the fouling process before deposits can become compressed is advocated. Waiting until membranes are so fouled that they have a drop ...

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