Special Filtration Situations
The City of Cottage Grove, Oregon has a 4 mgd Pall membrane plant. Special filtration situations are created by the presence of mine wastes, fluctuating raw water flows, siltation caused […]
Operational Challenges for Membranes Treating Cold Water with High TOC Content
Raw waters with high TOC content present unique challenges to municipal treatment plant operators. These problems are exacerbated when the raw water is very cold. Plants in the Pacific Northwest […]
Retrofitting an Aging Membrane Filtration Plant
The Oden Water Association had an existing media filtration plant treating Oden Bay Water, a bay area off Lake Pend Oreille near Sand Point, Idaho. In 1999 they decided to […]
Case Study -OMND Plant in North Dakota
This presentation will discuss the operation of a 6 MGD pressurized two-stage Ultrafiltration (UF) plant over a 3 year period at the Oliver-Mercer-North Dunn (OMND) Drinking Water Treatment Facility. The […]
Reverse Osmosis and Concentrate Generation
This presentation will describe the basics of reverse osmosis and how concentrate is part of the process. The importance of recovery rate, salt passage, concentrate factor and more will be […]
Overview of Concentrate Management
This presentation covers the basics of Concentrate Management including the systems producing concentrate, the general range of concentrate quality by source water, and the primary concentrate management options available to […]
Regulatory Concerns About Concentrate and Permitting for Concentrate Disposal
Water treatment using membrane technology will always generate a coninuous flow of concentrate which must be discharged or the water treatment process will stop. Discharge can be treatment of the […]
Disposal of Concentrate to Surface Waters – Issues and Concerns
This presentation will discuss various factors that can affect the discharge of concentrate to surface water bodies. Factors such as water quantity and quality, environmental conditions, public concerns, and regulations, […]
Summary of Class I InjectionWells; Viability for Membrane Byproduct Disposal
The protection of our underground sources of drinking water is of utmost importance, and the injection of fluids below these sources is, therefore heavily regulated. With careful consideration, planning and […]
What are the options for ZLD?
Disposal of reverse osmosis (RO) concentrate is becoming an increasingly difficult challenge, even for coastal desalination. Industries and municipalities are investigating zero liquid discharge (ZLD) options for concentrate management. This […]
