Drinking Water Filtration

Decrease Membrane Treatment Capital And O&M Costs With Optimum Flux Rates

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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.

Using Membrane Contactor Technology To Extend Resin Bed Life
In today’s economic environment when profits are reduced due to rising costs, it is necessary to find ways to save time and money.
Solve High Alkalinity With Membrane Contactors
A membrane degassing system can solve high bicarbonate alkalinity that negatively affects anion bed life.
Activated Carbon And Adsorption Of Trichloroethylene (TCE) And Tetrachloroethylene (PCE)
Trichloroethylene (TCE) and Tetrachloroethylene (PCE) are two of the most common solvents that contaminate groundwater supplies in the United States. Both solvents see frequent use in the extraction of fat, in the textile industry, in the production of various pharmaceutical and chemical products. TCE is also used as a degreaser from fabricated metal parts, and PCE serves as a component of aerosol dry-cleaning solvents.
Ion Exchange Resins And Activated Carbons For Better-Tasting Water
For many, access to good-tasting tap water is limited, and buying bottled water can be expensive. Simple pour-through jug filters offer a low-cost and effective alternative. Activated carbons, in conjunction with ion exchange products, produce drinking water that is absent of all industrial pesticides and contaminants.
Do We Have To Sacrifice Performance To Be Green?
The global use of membranes is widespread in municipal, industrial, and wastewater applications with reverse osmosis (RO) proving to be a highly effective and reliable method of advanced water treatment. Reuse applications have been particularly challenging for water treatment chemical companies as these highly variable feedwaters can contain any imaginable constituent, resulting in a wide array of site specific foulants. By Karen Lindsey, V.P. Operations, Avista Technologies, Inc.
China Power Plant Reduces Capital Costs, Energy Use With New Integrated Membrane System
As engineers come under increasing pressure to reduce maintenance and operating costs, inefficient combination double-pass reverse osmosis and electrodeionization (RO/EDI) water treatment systems have begun to lose popularity as a means of providing ultra-pure water. Integrated membrane systems (IMS), on the other hand, combine multiple membrane-based water treatment processes into a single system. In this case study, find out how a heat and power plant in Northeast China lowered capital costs and energy use by adopting an IMS to replace its conventional water treatment system.
Dissolved Air Flotation Pretreatment Washes Away Waco’s Foul T&O Problem
During the hot and dusty summers just a few years ago, many thirsty residents of Waco, TX, were reluctant to slake their thirst with the city’s water.
Stinkin' Drinkin' Water No More: Oxidation/Filtration Removes Hydrogen Sulfide
In January 2010, AdEdge Water Technologies, LLC was contacted by Aqua Utilities Florida to provide a hydrogen sulfide removal system for the Lake Josephine Community located in Highlands County, Florida.
MEMCOR® Continuous Microfiltration System Maximizes Water Resources For The City Of Scottsdale, Arizona
The desert community of Scottsdale, Arizona had no natural surface water sources and a decreasing groundwater supply. Scottsdale had historically treated and disposed of its wastewater.

Generating Station Maximizes Efficiency By Choosing A Membrane Decarbonation System

When dissolved carbon dioxide in the water began overloading the anion resin and decreasing capacity at its Rokeby Generating Station, Lincoln Electric Systems had to act quickly to update its winter contingency plans and meet increasing demand. In this case study, learn why the municipality chose a membrane degasifying system over chemical treatment options or a forced draft aerator, thus reducing costs and improving overall efficiency by minimizing downtime.

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Filtration: Heavy Suspended Solids Filtration - Electromedia® III

Electromedia III removes heavy suspended solids from water having up to 200 p.p.m. contaminants

Drinking Water Packaged Systems

Degremont offers a complete range of treatment capabilities in a compact package plant.

Leopold® I.M.S® 200 and I.M.S® 1000 Media Retainers

Introducing I.M.S® 200 and I.M.S® 1000 media retainers from Leopold®. Designed to improve the efficiency and reliability of both water and wastewater filtration systems.

Leopold FilterWorx® Automatic Control System by Xylem

The FilterWorx® Automatic Control System by Leopold is a complete filter control package consisting of all instrumen-tation and control equipment for the automatic monitoring and control of municipal water filtration systems.

Arkal Spin Klin Disc Filtration

Arkal Spin Klin Disc Filtration systems – now part of the Amiad family of technologies – delivers reliable, accurate and efficient water filtration for years, along with worldwide support.

Duplex Gravity Filter (DGF)

The Smith & Loveless Duplex Gravity Filter (DGF) removes suspended solids and particles, improving effluent quality. The standard system is available in sizes to fit any application, providing up to 200 square feet (18.6 square meters) of effective filtration area per unit. Dual media filtration increases filtration depth and limits the head loss problems associated with single-media designs.

Filtration: Secondary Sewage Filtration - Electromedia® IV

Electromedia IV filters properly treated secondary effluent waters containing suspended and settleable solids in the order of 50 p.p.m

ME Series – Pleated

Economical, Nominally Rated Pleated Cartridge Filters

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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.

The Intricacies Of Sand: Nature’s Filter Media

Carmine Iacuone, General Manager and Billy Leiva, Marketing Project Manager for Holliston Sand, recently sat down with Water Online Radio to discuss sand filtration in the water business. The Company, which incidentally provided the sand media for the New England Patriots’ newest Astroturf field, produces numerous sizes of sand and uniformity coefficients that are integrated into both single and multi-layer filters for the water industry.

Closed Circuit Desalination Simplifies Reverse Osmosis To Drive Down Energy Costs

As industry, agriculture and residential consumers compete for available freshwater sources, desalination continues to evolve as a viable process for increasing the available water pool. Industrial water is perhaps most critical as it accounts for as much as sixty percent of the freshwater being withdrawn in the United States today. Rising wastewater disposal costs, sustainability initiatives, and higher water efficiency standards are all fueling interest from industry in onsite brackish water reuse. However, municipal interest in water-stressed areas of the world is also on the rise.

Eliminate Filter Maintenance Costs Once And For All

Polly Stenberg, Director of Sales with Forsta Filters, explains how self-cleaning filters significantly cut costs and reduce maintenance for industrial, municipal, and irrigation applications.

Looking Towards The Future Of Wastewater

Jim Jackson, National Sales Manager for Mazzei Injector Company, discusses future trends for wastewater: direct potable reuse, ozone gas, ultra-filtration membranes, and one cutting-edge treatment plant that is now utilizing "designer" or custom-made recycled water with environmental benefits.

Radium Removal, Ion-Exchange, And Backwash Waste Removal Create Higher-Quality Water

Gary Warner, Executive Vice President of Tonka Water, discusses how radium removal, ion-exchange processes, and backwash waste removal leads to a higher level of purity.

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Smartrack Microfiltration and Ultrafiltration Water Treatment System: Video

Degremont's Smartrack Microfiltration and Ultrafiltration Water Treatment System is a universal rack with interchangeable MF/UF membranes. It's capable of handling the 4 principal module supplier brands found on the market -- ASAHI, DOW, GE, TORAY -- and inter-piping to allow switching the filtrate/concentrate exits.

Leopold® FilterWorx® Overview

FilterWorx® is a complete water filtration system engineered to improve efficiency and reliability. Ideally suited for applications such as potable drinking water treatment, tertiary wastewater treatment, nutrient removal in water or wastewater, pretreatment prior to low-pressure membrane systems, and RO membrane desalination pretreatment, FilterWorx performance filters feature a flat-bottom flume, fiberglass backwash water troughs, engineered media, three types of underdrains, and media retainers in two different sizes. In addition, FilterWorx control systems provide the longest filtration run cycles to reduce energy consumption and wastewater generation, thereby lowering operating costs.

Johnson Screens® TRITON™ Underdrains Product Video

This video features an inside look at how TRITON™ Underdrain Systems benefit operators, contractors, and consulting engineers alike. Watch the animated product showcase to find out details about simple installation, savings in filter height and volume during filtration, and how the backwash cycles enable reduced water consumption and lower power costs.

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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
Filtronics, Inc.
Filtronics has manufactured water and waste water treatment systems for industrial and municipal applications since 1974
Shelco Filters Manufacture of filter housings and elements|Pleated membrane and high efficiency cartridges|Bag housings and bags
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.
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.
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
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.
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
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.
Degremont Technologies Water Treatment Equipment |Wastewater Treatment Equipment |Sludge Management Equipment
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.
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.
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
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
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...
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

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.