This presentation discusses project delivery methods and compares the design-build approach with the design-bid-build and construction manager at-risk methods. The comparison includes data on relative unit cost, construction speed, delivery speed, and schedule growth. Types of design-build arrangements are also discussed including prescriptive bids...

This presentation provides design considerations for low pressure reverse osmosis (RO) systems. Topics discussed include pretreatment, membrane selection, chemical cleaning, piping configurations, energy recovery, and flux balancing. The presentation concludes with a case study documenting the Camp Pendleton RO system design....

This presentation provides an operator's perspective on the incorporation of microfiltration at the City of Mansfield Bud Ervin Water Treatment Plant. The presentation begins with an overview of the treatment processes and operating schemes at the facility. Next, training and operating challenges are discussed inclusive of strainer and membrane fou...

This presentation documents differences between municipal and industrial treatment projects with respect to membrane filtration (microfiltration and ultrafiltration) and membrane desalting (nanofiltration and reverse osmosis) processes. The presentation also provides example applications for membranes within various industrial markets. Industries t...

This presentation provides design considerations for the construction of seawater desalting facilities. The presentation is divided into sections for intake, pretreatment, reverse osmosis process, and post-treatment design. Key topics include corrosion management and energy recovery....

This presentation discusses advancements in reverse osmosis (RO) spiral wound element design with emphasis on 16-inch RO elements. Differences between 16-inch RO elements and traditional 8-inch elements are discussed along with special handling requirements for 16-inch elements. An overview of the Sorek, Israel seawater RO facility is also provided...

This presentation discusses the planning, design, and construction of the Wells 21 and 22 Treatment Plant for the Irvine Ranch Water District. The presentation begins with an overview of the project and treatment goals. Next the pretreatment, two-stage reverse osmosis (RO), and post-treatment processes are presented along with select design criteri...

This presentation discusses methods for improving flat sheet membrane bioreactor (MBR) performance and reliability. The topics discussed include peak storm flow management, oxygen transfer, and membrane cleaning. The presentation concludes with a summary of capital expenditure and net present worth data for MBR systems....

This presentation discusses equipment improvements and process optimization approaches at the South Coast Water District Groundwater Recovery Facility. The presentation begins with an overview of the Groundwater Recovery Facility as originally built in 2007. Next, the facility improvements and optimization results are presented. The changes made to...

This presentation discusses the use of pyrolusite media filtration for the removal of iron and manganese from a reverse osmosis bypass stream at the Richard A. Reynolds Desalination Facility. The presentation begins with background information on the facility as well as drinking water requirements for iron and manganese. Next, results are presented...

This presentation documents the treatment schemes used by the West Basin Municipal Water District to treat secondary effluent for industrial use and describes issues encountered with an existing microfiltration (MF) process. Alternatives for replacing the existing MF process with a new ultrafiltration (UF) process are discussed including a non-prop...

This presentation documents membrane system design, procurement, and fabrication considerations for projects that use an original equipment manufacturer (OEM). Topics discussed include specification review, project budgeting, procurement approach, bidding schedule, and fabrication schedule. The presentation concludes with two case studies that prov...