23 Articles found

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  • Reducing industrial water footprint lightens energy footprint, too

    Reducing industrial water footprint lightens energy footprint, too

    The close connection between the water footprint of an industrial facility, which describes its overall consumption and efficiency of its water use, and its carbon footprint – much of which reflects the energy used to move, heat, cool or treat water ...

    Jim Lauria

  • POE sediment filtration — your first line of defense

    POE sediment filtration — your first line of defense

    Around the country, our aging water delivery infrastructure is coated with sediment and scale from a century or more of buildup. Those same tuberculated pipes are constantly challenged by daily tie-ins, repairs, flow tests and fire hydrant use in ...

  • Filtration trends & application advice

    Filtration trends & application advice

    The most obvious evolutionary trend in filtration technology today is the capability to remove finer and finer particles from the process fluid stream. The rise of nanotechnology has created a need for removing particles of 100 nanometers or even ...

    Matt Migliore

  • Amiad’s pre-treatment systems used in NEWater factories

    Amiad’s pre-treatment systems used in NEWater factories

    In this article we focus on the NEWater project in Singapore, where high grade reclaimed water, to supplement water supply requirements, is produced from treated secondary effluent at NEWater factories. We describe how Amiad’s ABF10000 (BRUSH) ...

    Mike Coffey

  • AMIAD’s Filtomat Microfiber for RO Pre-Treatment

    AMIAD’s Filtomat Microfiber for RO Pre-Treatment

    In this feature article, we outline the effectiveness of Amiad Filtomat Microfiber automatic self cleaning filter technology when used in reverse osmosis (RO) pretreatment for the production of potable water. The Filtomat provides effective ...

    Marina Holenberg

  • Amiad’s AMF² pre-treatment technology ensures efficient and reliable nanofiltration of Scottish Highland loch water

    Amiad’s AMF² pre-treatment technology ensures efficient and reliable nanofiltration of Scottish Highland loch water

    In this feature article we report on the effectiveness of Amiad’s AMF² automatic self cleaning filter technology as a pre-treatment for membrane systems. We focus on high and variable suspended solids and colour removal applications where potable ...

    Jennifer Nemirovsky

  • TEP and biofilm fouling on membranes

    TEP and biofilm fouling on membranes

    Summary Biological fouling on membranes is a major problem in desalination and water purification plants. Oceanographers and limnologists have found that most marine and fresh waters are full of microscopic Transparent Exopolymer Particles, ...

    Tom Berman, Marina Holenberg

  • Stormwater Solids Reduction for NPDES Permits

    Stormwater Solids Reduction for NPDES Permits

    Finally obtaining a National Pollution Discharge Elimination System (NPDES) Permit is often a relief but is by far not the end of the story. Meeting the requirements of that permit often proves to be quite difficult and stiff fines are freely doled ...

    Dr. Marcus N. Allhands, PE, Senior Application Engineer

  • It’s Time to Rethink Cooling Tower Filtration

    It’s Time to Rethink Cooling Tower Filtration

    ABSTRACTThe dissipation of ambient or process heat in large HVAC systems, manufacturing facilities, power generation plants, refineries, metal mills and forges, chemical plants and food processors is most often accomplished by cooling towers. These ...

    Marcus N. Allhands

  • Removing Solids with Automatic Self-Cleaning Filters

    Removing Solids with Automatic Self-Cleaning Filters

    Introduction The “art” of filtration utilizes many methods for separating solid particles from fluids. There is often no right or wrong method. Water quality and customer requirements usually determine the “best” method for each unique ...

    Marcus N. Allhands, Ph.D., P.E. - Senior Application Engineer

  • Clarifiers-No, Filtration-Yes: A Case Study

    Clarifiers-No, Filtration-Yes: A Case Study

    Problem Twenty miles southeast of Coos Bay, Oregon situated at the conjunction of the North and South Forks of the Coquille River lays the town of Myrtle Point. Just five years ago this community of 2670 residents was facing a large potable water ...

    Marcus N. Allhands

  • Fundamentals and Advantages of Screen Filtration

    Fundamentals and Advantages of Screen Filtration

    The “art” of filtration utilizes many methods for separating solid particles from fluids. There is often no right or wrong method. Water quality and customer requirements usually determine the “best” method for each unique situation. Ridged screens, ...

    Marcus N. Allhands, Ph.D., P.E.

  • New Style Automatic Self-Cleaning Filters for Mill Cooling Water (Phase 1)

    New Style Automatic Self-Cleaning Filters for Mill Cooling Water (Phase 1)

    ABSTRACT Replacement of hot-mill rolls is expensive and often requires production to cease during the process. Surface deterioration of rolls escalates as cooling water quality decreases. This manuscript will describe the installation and ...

    Marcus N. Allhands

  • A Membrane Pretreatment Technology

    A Membrane Pretreatment Technology

    Nearly all membrane systems, no matter what their raw water source, must utilize some form of pretreatment to remove unwanted organic and inorganic suspended solids. Bag and cartridge filters are efficient at removing suspended solids but must be ...

    Dr. Marcus N. Allhands, PE

  • Self-Cleaning Pre-Filtration for RO Membrane Systems

    Self-Cleaning Pre-Filtration for RO Membrane Systems

    ABSTRACT A few years ago physical processes could only remove suspended solids from a water stream. Recent advances in technology now allow the removal of selected molecules and ions from a water stream by physical means using membranes. The ...

    Dr. Marcus N. Allhands, P.E.

  • Dependable Pretreatment for UF Membrane Water Treatment System

    Dependable Pretreatment for UF Membrane Water Treatment System

    Lake Forest is a small upper class community along the west shore of Lake Michigan about 35 miles north of downtown Chicago, IL. In 1890 a group of residents started the Lake Forest Water Company on the present site to provide water for the ...

    Dr. Marcus N. Allhands, PE

  • Amiad Filtration Systems - Amiad’s Suction Scanning System

    Amiad Filtration Systems - Amiad’s Suction Scanning System

    The following is a brief description of how a suction scanning filter operates. Dirty water flows into the filter through the inlet flange at the bottom of the filter body as shown in Figure A-1. Water then proceeds through the cylindrical 316L ...

    Dr. Marcus N. Allhands, PE

  • Efficient Removal of Organic and Inorganic Suspended Solids

    Efficient Removal of Organic and Inorganic Suspended Solids

    ABSTRACT The Romans used sand as a filter media to treat their drinking water 2000 years ago. Centuries ago water was poured through layers of cloth to remove visible impurities in drinking water with fabric bags and paper cartridges soon ...

    Marcus N. Allhands, Ph.D., P.E.

  • Self-Cleaning Filters for Pretreatment of Membrane and UV Water Treatment Systems

    Self-Cleaning Filters for Pretreatment of Membrane and UV Water Treatment Systems

    The removal of suspended solids is necessary to protect membrane systems and prevent the “shadow effect” in ultraviolet (UV) treatment systems. Recent field data has shown the effectiveness of automatic self-cleaning filters in removing suspended ...

    MARCUS N. ALLHANDS, PhD, PE

  • Self-Cleaning Filtration for Pretreatment of Membrane, UV and Ozone Water Treatment Systems

    Self-Cleaning Filtration for Pretreatment of Membrane, UV and Ozone Water Treatment Systems

    Recent field data has shown the effectiveness of automatic self-cleaning filters in removing suspended solids down to less than 3 microns in size without flocculents, pre-coats or granulated media. Pre-treatment of ozone systems is often needed to ...

    Marcus N. Allhands, Ph.D., P.E.