WATER MEMBRANES WHITE PAPERS AND CASE STUDIES

Water Utility Turns To State-Of-The-Art UV Technology To Help Address Drought

The 2013 year was the driest in recorded history with many areas of the San Joaquin Valley reporting groundwater levels more than 100 feet below previous historical lows. 

Using ‘TransMembraneChemiSorption’ (TMCS) For Ammonia Removal From Industrial Waste Waters

Dissolved gases like NH3, H2S or NOx in waste water lead to contamination in the sewage system and high treatment costs for municipal waste water treatment plants. 

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WATER MEMBRANES PRODUCTS

Dystor® Digester Gas Holder System

Dystor® Digester Gas Holder System

The Dystor® system from Evoqua, is a digester gas holder design that uses a dome-shaped, engineered membrane system to store methane gas, provide for sludge storage and prevent odors.

Wastewater Equipment Retrofit, Rehab and Aftermarket Solutions

Wastewater Equipment Retrofit, Rehab and Aftermarket Solutions

When demand increases, regulations change, and components reach their useful life, Evoqua Water Technologies responds.

Brands You Know. Performance You Trust

Brands You Know. Performance You Trust

While the Evoqua name is new, the brands you know and the performance you trust are not. Evoqua continues a 100-year tradition of helping consulting engineers and municipalities respond to market needs and evolving water standards for new plants, upgrades and retrofits.

Wallace & Tiernan® Disinfection

Wallace & Tiernan® Disinfection

Evoqua Water Technologies is the premier provider of total disinfection and chemical dosing solutions. Our extensive portfolio, which includes the trusted Wallace & Tiernan product line, is designed to meet your most rigorous demands in virtually any water application and give you access to both the latest advances and widest range of proven technologies.

MEMCOR® Ultrafiltration Systems

MEMCOR® Ultrafiltration Systems

Our membranes and membrane systems reflect the advancements that have been made in the industry over the past three decades.

Envirex® Biological Treatment and Clarification

Envirex® Biological Treatment and Clarification

Evoqua's biological treatment and clarification business is rooted in the first chain systems applied to a wastewater plant. A REX® system from the Chain Belt Company, a precursor to Envirex®, was installed in 1910 and operated for almost seventy years with the support of our experts and aftermarket services. Envirex branded wastewater technologies from Evoqua has continued to be an innovative leader for equipment designs and services for aeration, biological treatment, anaerobic treatment, clarification, digestion, and separation treatment equipment for municipal and industrial applications.

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WATER MEMBRANES PODCASTS

Chemical-Free AOP Technology

Chemical-Free AOP Technology

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

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.

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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.