DRINKING WATER FILTRATION CASE STUDIES AND WHITE PAPERS

Antiscalant Impacts Water Reclamation Efforts

Water reuse efforts in the West Coast are a priority and have the Ground Water Replenishing System (GWRS) of the Orange County Water District (OCWD) utilizing new technologies for water conservation. 

Hydrogen Sulfide Removal From Water Using AquaSorb® CX-MCA

The “rotten egg” odor in some water supplies is caused by sulfide in water. Sulfide can be treated using oxidation techniques, the goal being to convert the sulfide to high oxidation state species such as sulfate to eliminate the taste and odor concerns. Traditional oxidation techniques such as ozone and chlorine can be used, but can be expensive due to the equipment required to add and monitor the oxidant, and can lead to by-products such as trihalomethanes (THMs), which are regulated in drinking water supplies.

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DRINKING WATER FILTRATION PRODUCTS

Filtration: Scanaway Filter

Filtration: Scanaway Filter

The SCANAWAY assembly consists of a hollow PVC or stainless steel pipe with suction nozzles that are facing the inner side of the screen. A handle connected to the suction scanner from the outside, allows turning the scanner in a spiral movement so that it rotates inside the screen surface without touching the screen
UAT™ Reverse Osmosis Membrane Filtration Systems

UAT™ Reverse Osmosis Membrane Filtration Systems

Severn Trent Services offers the UAT™ Reverse Osmosis Membrane Filtration Systems to meet any tap, brackish or seawater application need. Using high quality components, the skid-mounted UAT systems are engineered to effectively produce treated water, free of particulate matter or contaminants

Forty-X™ Disc Filter

Forty-X™ Disc Filter

The Forty-X™ disc filter from Evoqua Water Technologies is the ultimate barrier in tertiary filtration. It captures more solids in a smaller footprint with a pleated media design and has evolved to incorporate X-tra's that are important in woven cloth media filtration

Filtration: Sea Water Filtration - Electromedia® VIII

Filtration: Sea Water Filtration - Electromedia® VIII

Electromedia VIII filters suspended solids from sea water for a variety of applications including brine water injection, pre-treatment to desalinization, research facilities, and aquariums
TurboStat™ Sidehill Static Screen

TurboStat™ Sidehill Static Screen

The TurboStat sidehill static screen is one of the simplest and most economical methods for solids separation. All units feature a stainless steel wedge wire filtration surface. The working principle is based on a liquid current circulating over the screen's curved surface.

Filtration Technologies

Filtration Technologies

From state-of-the-art arsenic removal and wastewater treatment equipment to water filtration, wastewater filtration and water evaporative solutions, from reverse osmosis to nanofiltration, Severn Trent Services has the technology to meet your filtration needs

Turbidity Filtration: Turbidity Filtration Using Alum

Turbidity Filtration: Turbidity Filtration Using Alum

Electromedia® V effectively filters turbid waters at 10 g.p.m. per sq. ft. to produce treated waters having turbidities less than 0.2 NTU
H2Zero Backwash Recycle Systems

H2Zero Backwash Recycle Systems

The H2Zero Backwash Recycle Systems configuration can be designed for arsenic adsorption or iron & manganese oxidation & filtration systems. Whether backwashing is infrequent (every 45-60 days in the case of adsorption for "fluffing" the media beds or performed one or more times per week using AdEdge can customize a solution to fit your need.

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DRINKING WATER FILTRATION PODCASTS

Clearing The Air With Activated Carbon

Clearing The Air With Activated Carbon

Think you know activated carbon? The range of capabilities is so robust that operators of all types — drinking water, wastewater, municipal, or industrial — should come to fully understand its usage.

A Sustainable Solution For Treating Contaminants

A Sustainable Solution For Treating Contaminants

There are a number of regulations in drinking water centered around emerging contaminants. Hexavalent chromium is one that you’ll see on the national marketplace.

Chemical-Free AOP Technology

Chemical-Free AOP Technology

Most advanced oxidation processes require chemicals—but not Photo-Cat.

The Many Faces Of Carbon — A Versatile Treatment Solution

The Many Faces Of Carbon — A Versatile Treatment Solution

What concerns drinking water municipalities the most? Is it regulations, emerging contaminants, or a crisp, clear product? To a degree, it’s all of the above. Jim Knepper of Jacobi Carbons explains.

The Growing Market For Membranes

The Growing Market For Membranes

Despite what many think, membrane systems are not complicated to operate, says Todd Hathaway of Kruger Inc.  In an interview with Water Online, Hathaway explains why taking the time to understand the technology is worthwhile.

What’s In An Underdrain? More Than You Might Think

What’s In An Underdrain? More Than You Might Think

Media filtration is employed for a variety of treatment applications — drinking water, wastewater recycle/reuse, and pretreatment for desalination among them — but practitioners may be missing out on a key opportunity for savings.

More Drinking Water Filtration Podcasts
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DRINKING WATER FILTRATION VIDEOS

Desalitech ReFlex Reverse Osmosis Technology Demonstration

Desalitech ReFlex Reverse Osmosis Technology Demonstration

ReFlex products feature patented Closed Circuit Desalination (CCD)  technology and are uniquely capable of maximizing recovery from challenging waters at record low energy consumption levels. This demo video reflects the actual performance of the ReFlex RO unit as reflected in the PLC HMI. The time is fast forwarded and reflects a total sequence time of 32.5 minutes. The system includes all basic ReFlex equipment: pumps, instruments, micron filter, and valves.

biottta Biotreatment Pilot Case Study

biottta Biotreatment Pilot Case Study

The Lincoln Pipestone Rural Water District in Minnesota had a high level of both nitrate and manganese in the groundwater. Piloting of the biottta treatment solution proved to be successful.

High Efficiency Water Treatment In Industrial Reverse Osmosis

High Efficiency Water Treatment In Industrial Reverse Osmosis

Industry accounts for nearly 60 percent of fresh water withdrawals in the developed world, putting tremendous stress on water resources which will only increase with growth.

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DRINKING WATER FILTRATION SUPPLIERS

  • WRT - Water Remediation Technology, LLC
    WRT - Water Remediation Technology, LLC

    WRT provides effective processes for removing radium, uranium and other contaminants from water. Our complete package of services includes process equipment, proprietary treatment media, safe exchange of media, and proper handling and disposal of used media

  • Aquatech International Corporation
    Aquatech International Corporation For over 2 decades, Aquatech has provided industry worldwide with proven water and wastewater treatment systems|We strive to enable our customers to maximize efficiency by concentrating on their core businesses while we provide the leadership and expertise necessary in water treatment|Our mission is to utilize innovation and performance excellence to drive toward the ultimate goal--a lower overall life cycle cost of treatment
  • Degremont Technologies
    Degremont Technologies Water Treatment Equipment |Wastewater Treatment Equipment |Sludge Management Equipment
  • Eco-Tec Inc.
    Eco-Tec Inc.

    Eco-Tec Inc. engineers, designs, manufacturers and distributes from Pickering, near Toronto, Canada. Customer service and technical support provide treatability studies, installation service, on-site supervision and operator training...

  • Evoqua Water Technologies
    Evoqua Water Technologies

    Evoqua Water Technologies, formerly Siemens Water Technologies, is a leader in water and wastewater treatment products, systems and services for industrial and municipal customers. We offer a wide range of proven product brands and advanced water and wastewater treatment technologies, mobile and emergency water supply solutions and service contract options.

  • Leopold -- A Xylem Brand
    Leopold -- A Xylem Brand

    Leopold Universal Type S and SL Underdrain|Leopold IMS Cap|Leopold DAF - Dissolved Air Flotation|Leopold Clari-Trac (CT2) Submerged Sludge Collector|Leopold Clari-Vac Floating Sludge Collector|Leopold Engineered Filter Media Products|Leopold Instruments And Controls| Leopold Ultrafiltration Membrane Systems

  • Filtronics, Inc.
    Filtronics, Inc.

    Filtronics has manufactured water and waste water treatment systems for industrial and municipal applications since 1974

  • Ovivo
    Ovivo

    Ovivo brings together more than 200 years of collected experience, process expertise and proven technologies; but that doesn’t mean that we’re complacent. Over past centuries of growth, development and refinement we have been guided by the principle of delivering value to our clients. Our equipment and technologies already have a reputation for long-term durability and reliability, offering decades of use and leading to lasting relationships with key customers.

  • Aqua-Aerobic Systems, Inc.
    Aqua-Aerobic Systems, Inc.

    Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design and manufacture of wastewater treatment equipment and systems for both municipal and industrial markets, worldwide.

  • Amiad Water Systems
    Amiad Water Systems Leading supplier of automatic, self-cleaning filters, valves and accessories for municipal and industrial applications|Cost effective pre-filtration solution for membrane protection including surface water applications for RO, UV, UF and effluent water|Provide filtration degrees from 3 - 3500 microns and service any flow rate needed
  • Shelco Filters
    Shelco Filters

    Manufacture of filter housings and elements|Pleated membrane and high efficiency cartridges|Bag housings and bags

  • Veolia Water Technologies
    Veolia Water Technologies

    Veolia Water Technologies offers comprehensive water and wastewater solutions for industrial and municipal customers. With unique technologies and process expertise, Veolia specializes in engineering, design, and project management, construction and execution.

  • Severn Trent Services
    Severn Trent Services

    Severn Trent Services is a leading supplier of water and wastewater treatment solutions. We provide our clients with some of the industry’s brightest minds, advanced technologies, and quality products to provide you with truly efficient, cost-effective solutions to your water and wastewater challenges

  • Membrana
    Membrana

    Liqui-Cel® Membrane Contactors are used for degassing liquids. They are most commonly used for O2 removal from water and CO2 removal from water, but they are also capable of controlling a variety of other dissolved gasses as well, such as Nitrogen.

  • AdEdge Water Technologies, LLC.
    AdEdge Water Technologies, LLC.

    AdEdge Technologies, Inc specializes in the development and supply of innovative technologies, adsorbent-based products, and systems that remove contaminants from process or aqueous steams. We are an organization based on solid deliverable, scalable, scientifically proven technology and experience for the removal of arsenic and other contaminants from water

  • QUA Group
    QUA Group

    QUA® headquartered in USA, is a developer and manufacturer of leading-edge advanced membrane products used in the water, wastewater, and water reuse markets. Sold exclusively through a global network of qualified OEM's, QUA's product offering includes their innovative Fractional Electrodeionization (FEDI®) stack, which has superior hardness tolerance compared to the other electro-deionization products on the market and their NSF Certified Q-SEP® Ultrafiltration (UF) membranes.

ABOUT DRINKING WATER FILTRATION

 

Water treatment filtration involves the removal of suspended particles from water by passing the water through a filtration medium. As the water passes through the filter, floc, minerals, microorganisms and other impurities get stuck in the filter and are removed from the filtered water. Passage can be blocked by physical obstruction, biological action, adsorption, absorption or a combination of ways. Filtration is usually the final step in the solids removal process during water treatment which typically begins with coagulation and advances through flocculation and sedimentation.  

Unfiltered or turbid water is difficult to disinfect because microorganisms growing on suspended particles are often harder to kill than when they are separated from the particles. Turbidity can also cause unwanted taste and odor issues in the potable water supply. Drinking water filtration is also used to remove microorganisms that are resistant to traditional methods of disinfection such as chlorination. By requiring a low turbidity in finished water, water treatment plants are ensuring that few or no microorganisms such as Giardia are present in finished drinking water.

There are three typical methods of clean water filtration used during the water treatment process. Conventional filtration follows coagulation, flocculation and sedimentation and precedes disinfection. Direct Filtration follows coagulation and flocculation when there is no sedimentation step. The final method called In-Line Filtration takes place without flocculation or sedimentation. A coagulant chemical is added to the water just before filtration and coagulation occurs in the filter. 

 There are many types of filter media being used in today’s water treatment industry.