Using the largest water recycling project in the Southern Hemisphere, Australia's Western Corridor Recycled Water Project (WCRWP), as an example, the paper discusses state-of-the-art water reclamation with membranes (MF/UF and 2-pass RO). Combining a triple-membrane approach with other processes, at build-out WCRWP will include a combined capacity...

This paper discusses a pilot program where hydrogen sulfide gas is removed by first oxidizing to particulate form, elemental sulfur, and then filtering with MF/UF....

Ceramic vs. Polymeric Membranes comparison...

This presentation provides an overview of capital and operating costs for microfiltration, ultrafiltration, nanofiltration and reverse osmosis. Caution is given about what is included in the cost calculations and it is emphasized that concentrate disposal should be considered from early stages of the project....

This PowerPoint discusses MF/UF Operator Training: Transitioning from Granular Media to Membrane Filtration...

This presentation provides a general overview of terminology for low pressure (microfiltration/ultrafiltration) and high pressure (nanofiltration/reverse osmosis) membranes. The low pressure membrane discussion includes a description of log removal values and air integrity testing. Membrane materials for low pressure and high pressure membranes are...

The complex regulatory landscape for water and wastewater in Ontario encompasses numerous Ministries, multiple Acts and and a seemingly endless array of regulations, guidelines and extra-provincial directives adopted by reference in the legislation. The matter can be further complicated by the introduction of membrane technologies used in regulate...

This presentation provides an overview of ceramic membrane filtration system. It discusses similarities and differences between Ceramic and Polymeric micro filtration systems. They both provides excellent filtration, low turbidity and greater than 4-log giardia and crypto removal. Ceramic membranes have a longer life and have higher chemical tole...

This paper summarizes surveys of and discussions with multiple WTP operators of MF/UF-based plants about their full scale facilities, focusing on the frequency of fiber breaks and the associated costs for labor and repairs. Costs are presented in US Dollars. The data are normalized to reflect the relative usage by manufacturer to represent the actu...

Providing adequate system capacity and safe water quality are outlined as the primary goals of treatment operations. To monitor the effectiveness of microfiltration and ultrafiltration treatment, various water quality indices are reviewed. The importance of operational trend graphing and normalization is highlighted....

This paper will be of interest to utilities and engineers planning or operating MF/UF WTPs in Texas. The discussion, tables, and flow charts will provide checklists of requirements for MF/UF membrane projects....

Results from the City of El Dorado?s (Kansas) pilot testing and information about the applicability of ceramic membranes are presented, as well as the capital and operating cost comparison of the polymeric and ceramic membrane alternatives. This paper and presentation benefit other utilities that are looking to expand or add capacity and are consi...

This paper discusses the active management of a 10 MGD membrane filtration system to minimize operational costs over a decade of operation....

Ceramic membranes may be the future for microfiltration and/or ultrafiltration (MF/UF) membrane-based water treatment. Presentation compares ceramic MF/UF to the more widely applied polymeric options, considering advantages and disadvantages, as well as a summary of currently available ceramic membrane systems....

Meidensha Corporation (Tokyo, Japan) contracted Black & Veatch to perform third party demonstration testing of their ceramic flat sheet membrane CFM membrane to demonstrate its ability to meet the California Division of Drinking Water (DDW) Recycled Water Criteria per California Code of Regulations Title 22. The City of Escondido (City), California...

Reverse osmosis (RO) permeate is aggressive, corrosive since it is soft, low alkalinity water with slightly acidic pH. Unless properly post-treated, finished water from RO facilities can cause corrosion to downstream fixtures and piping including the distribution system. Post-treatment includes chemical addition to adjust water quality. Blending a ...

Many older proprietary microfiltration and ultrafiltration (MF/UF) membrane systems have been in service long enough to require replacement of elements. This paper presents methods to specify and select new replacement elements for existing proprietary systems allowing competitive bids between suitable manufacturers (rather than risking higher cost...

Many older proprietary microfiltration and ultrafiltration (MF/UF) membrane systems have been in service long enough to require replacement of the membrane elements. This paper presents methods to specify and select new replacement elements for existing proprietary systems allowing competitive bids between suitable manufacturers (rather than riskin...

The paper presents suggestions for improved design and operation of MF/UF treatment plants based on the author?s 35 years of experience. Suggestions include: 1. Derate Piloted Flux to yield more reliable capacity at affordable cost. 2. Reduce the number of terms. A translation table is presented comparing odd to preferred terms (based on AWWA?s MF/...

Overview of and introduction to membrane plant design considerations for both microfiltration and ultrafiltration (MF/UF), i.e., low pressure filtration membranes, as well as for reverse osmosis and nanofiltration (RO/NF) membranes. The presentation will focus on drinking water treatment applications, but will also be relevant for water reclamation...

The paper presents suggestions for improving operations of MF/UF membrane-based treatment plants based on the author?s 35 years of experience with the goals of making the operator?s work life easier, lowering operating costs, and facilitating reliable plant performance with stable capacity. Suggestions include: periodic archiving of plant setpoint ...