Application of Two-Stage Ultrafiltration for High Water Recovery and Minimal Waste Discharge in Big Timber, MT
A two-stage ultrafiltration system designed, built, and commissioned for the City of Big Timber, MT, is described. After a thorough review of technology options, while determining how to bring their WTP system into compliance and work with existing infrastructure options and limits, the City elected to install a two-stage ultrafiltration system in part because of […]
Application of Two-Stage Ultrafiltration for High Water Recovery and Minimal Waste Discharge in Big Timber, MT
A two-stage ultrafiltration system designed, built, and commissioned for the City of Big Timber, MT, is described. After a thorough review of technology options, while determining how to bring their WTP system into compliance and work with existing infrastructure options and limits, the City elected to install a two-stage ultrafiltration system in part because of […]
Established Practices, Innovative Design, and New Products: A New Generation of Ultra High Pressure Desalination
In common parlance, reverse osmosis (RO) is often described as removing salt from water. In practice however, these processes squeeze water from a salt solution resulting in concentrate to be disposed or treated further in more expensive processes which pose significant challenges to the viability of a project. Disposal options may be cost-prohibitive or unavailable […]
Established Practices, Innovative Design, and New Products: A New Generation of Ultra High Pressure Desalination
In common parlance, reverse osmosis (RO) is often described as removing salt from water. In practice however, these processes squeeze water from a salt solution resulting in concentrate to be disposed or treated further in more expensive processes which pose significant challenges to the viability of a project. Disposal options may be cost-prohibitive or unavailable […]
A Novel Method for Modeling Brine and Permeate pH in RO and NF Systems
Concentrate pH in RO and NF applications plays a significant role in the formation of certain scales and the rejection of various contaminants. Incorrectly predicting pH can lead to excessive chemical costs or operational issues. Likewise, permeate pH is of utmost importance for determining post-treatment requirements for the product water. Most membrane and antiscalant projection […]
A Novel Method for Modeling Brine and Permeate pH in RO and NF Systems
Concentrate pH in RO and NF applications plays a significant role in the formation of certain scales and the rejection of various contaminants. Incorrectly predicting pH can lead to excessive chemical costs or operational issues. Likewise, permeate pH is of utmost importance for determining post-treatment requirements for the product water. Most membrane and antiscalant projection […]
Meiden’s CFM, A Decade of Ceramic Flatsheet Membrane Experience
Meiden commercialized our ceramic flatsheet membrane (CFM) a decade ago. We will highlight the progress of our journey with CFM. CFM is now in over one hundred installations treating over seventy five million gallons per day of water ranging from small to large facilities. The projects include a wide variety of municipal and Industrial water […]
Silicon Carbide Membrane in Municipal Water & Wastewater Applications
The application of silicon carbide (SiC) membranes in municipal wastewater applications has been growing rapidly over the past couple of years. With numerous key performance and operational advantages, SiC membranes have demonstrated competitive life cycle cost evaluations with polymeric membranes despite having higher capital costs. SiC has been successfully applied in membrane bioreactor (MBR) and […]
Treating Challenging Wastewaters with Ceramic Membranes
While polymeric membranes are used extensively for treating domestic and industrial wastewaters, ceramic membranes have some unique characteristics that make them uniquely suitable for processing challenging waters. Their biggest advantage in these applications is their higher chemical resistance, enabling them to be cleaned more effectively and reducing the chance of irreversible fouling. An example of […]
Success with Plant performance changes
In 2015, Parker Water and Sanitation District (PWSD) commissioned the Rueter-Hess Water Purification Facility (RHWPF) which is a ceramic membrane facility with Actiflo™ Turbo and Actiflo™ Carb pre-treatment processes with a design capacity of 10 million gallons per day (mgd). The RHWPF treats blended water consisting of local surface water, alluvial and Denver Basin aquifer […]
