FEATURED ARTICLES

• Water Replenishment District Of Southern California Incorporate Direct-Coupling Of Toray UF To Toray RO For High Recovery and Energy Savings

  Through the Water Independence Now program, WRD aims to provide 4 million residents in the Los Angeles region with an entirely local sustainable groundwater supply.

• Treated Municipal Sewage Achieves High-Quality Discharge Values With Toray MBR Technology

  Due to population growth in recent years, Sanessol, the concessionaire responsible for the water supply and sewage treatment of Mirassol and part of Igua Saneamento Group, decided to use a state of the art technology for their new WWTP, Fartura.

• MBR Modules Help Achieve Sustainable Management Of Wastewater On Vancouver Island

  The Cowichan Valley Regional District (CVRD) in Vancouver Island, Canada teamed with Toray to successfully install several membrane bio-reactor (MBR) systems updated with new technology to expand capacity.

• Optimizing RO-Membrane Performance In Produced-Water Applications

  Here are several important considerations for getting maximum value from produced-water RO treatments at minimal total lifecycle costs.

• UF/RO System Treating Mine-Influenced Water To Remove Selenium

  A Phosphorus mine in Wyoming needed to treat high selenium concentrations leaching into the surface water. Read the full case study to learn how Toray projected to save the plant energy costs for years.

• Membrane Technologies Achieve Zero Liquid Discharge In India's Special Economic Zone

  Due to ongoing operational issues, MBR modules at the Pharmez Special Economic Zone near Ahmedabad required replacement. Read the full case study to learn more.

• Retrofit Expansion Of An Ultrafiltration System Using TORAY UF Modules

  The Brazos Regional Public Utility Agency (BRPUA) in Texas operates the Surface Water and Treatment System (SWATS) that treats water from Lake Granbury, fed by the Brazos River. The SWATS facility first began operating in 1988 with clarification, dual media filtration, and electrodialysis reversal (EDR). The plant was upgraded in 2001 to include ultrafiltration (UF) and reverse osmosis (RO) membrane treatment to produce higher quality effluent.

• Low-Fouling RO Tech Keeps Replacement Costs Down At Wastewater Reuse Plants

  By using Toray's low-fouling polyamide composite membranes, the WTPs at the AMATA estates operated the RO systems for more than five years before requiring replacement of the RO elements. This low rate of replacement has considerably helped the end-user save operational and capital costs and is noted as one of the most successful wastewater reuse plants in Thailand.

• Cost-Effective Sludge Thickening Processor Using MBR Membrane Bioreactor

  The Toray MBR modules helped a local utility achieve their goals of conserving water and meeting the Regional Water Quality Control Board's effluent standards (Title 22), so the reclaimed water can be used for irrigation and other reuse applications. 

• Taiwan Mandates Water Reclamation For Economic Sustainability

  As a leading global supplier of semiconductors and other related IT components, access to a consistent supply of clean water is essential in Taiwan for sustaining a growing economy. However, in 2015, the country experienced one of the worst droughts in its history. Combined with frequently occurring typhoons that hamper the availability of clean water, this sparked the government to implement countermeasures immediately. Read the full case study to learn more.

• PVDF Hollow-Fiber Ultrafiltration Membranes Selected For Plant Upgrade

  The City of Delaware, Ohio's Water Treatment Plant (WTP) started operating in 1889. Under the EPA's Long Term 2 Enhanced Surface Water Treatment Rule (LT2), the WTP's feed water is classified as Bin 2, which requires a 4-log removal of Cryptosporidium. As a result, the City would convert its 6.0 MGD lime softening plant to a 7.2 MGD membrane treatment facility utilizing a 4.5 MGD ultrafiltration (UF) system to comply. A total of seven proposals were received during the bidding phase of the UF system, which was narrowed down to three based on best projected capital and operating costs and membrane performance. The three selections would be piloted for further evaluation. Read the full case study to learn more.

• Seawater Desalination Using RO Membranes To Support A Thriving Agricultural Economy

  As the agriculture economy boomed, needs for freshwater demanded by irrigation, tourism and the local community also grew in Campo de Dalías, a coastal region on the Mediterranean Sea. As a result, the region faced overexploitation of groundwater aquifers. Read the full case study to learn how Toray was selected as the sole membrane supplier for a two-pass system for a newly implemented national desalination plan.

• How To Score High Marks For Low-Pressure RO Performance

  For water system operators, contract engineers, OEMs, and reverse-osmosis (RO) membrane suppliers alike, the difference between expectations for RO membrane element performance and quantifiable performance in the actual operating environment can be fraught with surprises. This article addresses guidelines for establishing realistic RO warranty performance criteria and achieving those criteria in real-world applications.

• How UF Membrane Fiber Strength Impacts Reuse Success

  Ultrafiltration (UF) has been proven a key in wastewater reuse, but operators have struggled to keep up with repairs or having to replace older hollow-fiber membranes. Recent advancements in manufacturing have produced more durable membranes that accomplish the task at a lower cost.

• Membrane Module Pilot Test In North Dakota

  Toray UF membrane modules were piloted over a fifteen-week period to help service the growing demand for clean water in southwest North Dakota. The outcome, as part of the Southwest Pipeline Project (SWPP), would be construction of the Oliver-Mercer-North Dunn (OMND) Water Treatment Plant.

• Integrated Membrane Facility In The City Of Delaware, Ohio

  To better comply with the Long Term 2 Enhanced Surface Water Treatment Rule (LT2) the City of Delaware (Ohio) piloted Torayfil hollow-fiber PVDF membrane modules to treat surface water for their 7.2 mgd full-scale facility. After significant review of the data, cost, and other factors, the City and URS selected Toray to utilize in the full scale design. Read the full case study to learn more.

• From Raw Lake Water To Excellent Filtrate Quality Suitable For Drinking Water

  CH2M contacted Toray Membrane USA with an invitation to pilot our pressurized TIPS hollow fiber UF membrane module for the City of Sherman Texas 10 MGD Expansion Project. This document summarizes the findings of this pilot study program.

• Ultrafiltration And Reverse Osmosis Testing On Tertiary Effluent From The North City Water Reclamation Plant

  Ultrafiltration (UF) membranes have already gained worldwide acceptance in the treatment of drinking water for their removal of chlorine resistant pathogens such as cryptosporidium. Tertiary treatment with UF has been established, although with a lower level of knowledge and number of installations. This paper will discuss the performance of hollow fiber UF/MF membrane modules in treating tertiary effluent, and the subsequent performance of the downstream RO membranes.

• Operations And LRV Calculations At Southwest Pipeline Project Drinking Water Treatment Facility

  This presentation will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility, North Dakota.

• How The Performance Of This UF Membrane Is Exceeding Design Expectations

  This article will discuss the operation of a 4 MGD pressurized two-stage Ultrafiltration (UF) plant over a 14 month period at a drinking water treatment facility in North Dakota, and explain how performance of these UF membranes over a fourteen month period demonstrated stable operation with minimal fouling.