WATER MEMBRANES WHITE PAPERS AND CASE STUDIES

Overcoming Difficult Conditions, Salty Groundwater And Changes In Feedwater Quality

Kibbutz Reim had to convert salty groundwater into a high quality irriga­tion resource in this desert-like region. High recovery was essential to this customer, both because of the limited amount of groundwater available and the challenge of brine disposal from their inland location.

Solve High Alkalinity With Membrane Contactors

A membrane degassing system can solve high bicarbonate alkalinity that negatively affects anion bed life. 

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WATER MEMBRANES PRODUCTS

ReFlex™ Reverse Osmosis

ReFlex™ Reverse Osmosis

Desalitech ReFlex Reverse Osmosis systems are highly efficient, typically reducing brine waste by 50% to 75% and energy consumption by up to 35%.

ReFlex Max™ Reverse Osmosis

ReFlex Max™ Reverse Osmosis

Desalitech ReFlex Max Reverse Osmosis systems are highly efficient, typically reducing brine waste by 50% to 75% and energy consumption by up to 35%.

EcoSense ODO200

EcoSense ODO200

EcoSense ODO200 is an optical-based dissolved oxygen meter ideal for DO sampling.

1700 Series For The Petro-Chemical Market

1700 Series For The Petro-Chemical Market

Mainsail Global’s Boone diffuser membranes are designed for the petro-chemical market with hydrogenated acrylonitrile-butadiene rubber (HNBR). These custom membranes are built for durability, and can withstand long-term exposure to heat, oil and chemicals readily present in petro-chemical wastewater streams. With excellent tensile strength, abrasion and ozone resistance and higher modulus retention at elevated temperatures, Boone membranes combine the physical strength and chemical makeup of HNBR for an ideal solution in petro-chemical wastewater treatment.

1600 Series For Fats, Oils, Greases, Phosphorus, Chlorines and Other Chemicals

1600 Series For Fats, Oils, Greases, Phosphorus, Chlorines and Other Chemicals

Designed with the dairy market in mind, the Dampier membrane is optimized to withstand long-term exposure to fats, oils, greases, phosphorus, chlorines and other readily present chemicals. Its silicone elastomers possess inherently low intermolecular forces, providing excellent resistance to hot and cold temperatures. Our Dampier membranes are hydrophobic, and do not react with the unique chemicals present in dairy wastewater. Heat stable (up to 365°F) and flexible at low temperatures, these custom formulated membranes provide durable, chemically-correct solutions for dairy wastewater treatment.

1500 Series For Cost-conscious Municipal and Industrial Water Markets

1500 Series For Cost-conscious Municipal and Industrial Water Markets

EPDM elastomers’ fully saturated backbone lends these diffusers superb resistance to ozone and oxygen, while its non-polar nature provides resistance to ketones and alcohols. These economical membranes also offer excellent chemical, heat, acid and phosphate fluid resistance. With good low temperature flexibility, this series’ technology provides optimum performance and stability over a broad range of operating temperatures. Our Columbus, Drake and Magellan membrane technology is not recommended for applications where petroleum or mineral oils, or di-ester lubricants are present.

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WATER MEMBRANES PODCASTS

The Future Of Water: Reuse, Energy-Efficient Technologies On The Horizon

The Future Of Water: Reuse, Energy-Efficient Technologies On The Horizon

The U.S. should be paying attention to innovation happening in the water space worldwide, says Ryan Spanton of WesTech, in an interview with Water Online Radio.

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.

“Indestructible” Membranes, Mobile Treatment Systems Make Water Recycling Easy

“Indestructible” Membranes, Mobile Treatment Systems Make Water Recycling Easy

Water reuse technology is quickly becoming the next big thing, says Bob Minella of Layne, a global water management, construction, and drilling company.

Changing Water Conditions Dictate ‘A Shift That Is Here To Stay’

Changing Water Conditions Dictate ‘A Shift That Is Here To Stay’

When it comes to potable water, the biggest problem is that there isn’t enough available — at least not in the drought-ridden Western states of the U.S.

Closed Circuit Desalination Simplifies Reverse Osmosis To Drive Down Energy Costs

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.

Looking Towards The Future Of Wastewater

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.

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WATER MEMBRANES 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.

High Recovery Reverse Osmosis Water Treatment For Industrial, Agricultural, And Municipal Applications

High Recovery Reverse Osmosis Water Treatment For Industrial, Agricultural, And Municipal Applications

Industry accounts for nearly 60 percent of fresh water withdrawals in the developed world and agriculture consumes 70 percent of fresh water supplies globally, according to UNESCO.

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.

Rubber Diffuser For The Chemicals In Your Wastewater Video

Rubber Diffuser For The Chemicals In Your Wastewater Video

Forget the old municipal approach to wastewater management. Our scientists and engineers create a customized solution that helps you cut costs, boost your environmental image, avoid regulatory issues and turn a headache into a competitive advantage. By renewing your water, we transform your business!

Smartrack Microfiltration and Ultrafiltration Water Treatment System: Video

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.

Ovivo's BulletProof OV400 Membrane Unit

Ovivo's BulletProof OV400 Membrane Unit

Ovivo's OV400 technology is said to be BulletProof. Watch this video demonstration to see how the flexible flat-sheets, which self-heal in seconds, responds to multiple tests.

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WATER MEMBRANES NEWS

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WATER MEMBRANES

 

Water membranes are widely used in the water treatment processes. They have become a fundamental player in separation technology because of the fact that they require no additional chemicals and their relatively low energy requirements.

Water membranes have been applied during the extraction of produced water, treatment of waste/sewage water and processing of surface water all with huge success levels. Conventional water treatment techniques are over time incorporating in their processes the use on water membranes. Commercialization of membranes was first done in the 1970s and 1980s.

Membrane technology is chiefly based on the presence of pores on the membranes that make them semi-permeable. The simple principle on which water membranes work is such that the semi-permeability of water membranes ensures that only water is allowed to pass through a specific membrane while trapping unwanted particles and substances.

In both microfiltration and ultra filtration, membranes provide an effective barrier for arresting suspended solids in water.

To aid substances to penetrate across a semi-permeable membrane the following steps are undertaken: Electric potential introduction, high pressure application and ensuring that the concentration gradient on both sides of the membrane is maintained. The surface area of the membrane also determines the efficiency of the membrane in use.

The only drawback on water membranes is that they cannot remove substances that are actually dissolved in the water such as phosphorus, nitrates and heavy metal ions. The following are categories of membranes: Microfiltration (MF), Ultra filtration (UF), Reverse osmosis (RO), and Nanofiltration (NF) membranes

Ultra filtration membranes employ polymer technology with chemically created microscopic pores that trap dissolved substances therefore eliminating the possible use of any coagulants.