The PowerPoint presentation reviews concentrate disposal methods for reverse osmosis facilities in the United States...

This presentation describes a city's goal of implementing a desalination project supplied by beach wells to facilitate city-wide redevelopment. Significant measures were taken to reduce both capital and operating costs through energy recovery, high efficiency pumps, and off-peak operation. By utilizing this design approach, and making use of a 50% ...

This paper describes the pilot testing and retrofit of a CA UF drinking facility treating a degraded quality surface water which operates with ZLD. Challenges encountered during the project include: permtting, deteriorating source water quality and continued operations. Final design eliminates one stage, decreases flux by 15% and reduces energy a...

This paper evaluates the use of secondary versus tertiary water for sourcewater ro indirect potable reuse. The addition of Mannich polymer for tertiary treatment results in increased NDMA formation. Ths paper compares the operation of the unit processes for the indirect potable reuse on both source waters. The source water and product water quali...

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 covers MF/UF water quality, performance, and applications. It provides an overview of the basic principles of membrane filtration, typical MF/UF treatment objectives and elaborates on the differences between pressurized and submerged systems....

Study compares advanced treatment pilot testing results aimed at reducing maintenance costs while also improving contaminate rejection in application of indirect and direct potable water reuse. Evaluation focuses on failing rate, salt passage and reduction of contaminants of emerging concern. Reverse Osmosis membranes from three manufacturers were ...

This paper will compare operating results from the membrane filtration and RO systems applied for indirect potable reuse (IPR), comparing each system configuration and membrane type based on fouling rates, product water quality, and energy usage. These results will also be compared against available operating information from full-scale facilities...

This paper discusses the use of in-line filtration with ultrafiltration (UF) membranes for disinfection by-product (DBP) precursor reduction, the challenges experienced during start-up of the facility, and the measures taken to address these challenges. The paper also demonstrates that while the membrane processes are often the focus of membrane f...

Data generated from the City of San Diego Advanced Water Purification (AWP) demonstration project was used to support the City?s proposal for conditional regulatory approval and estimate of capital, operational and maintenance (O&M) costs of a potential full-scale project. The potential full-scale project would purify tertiary effluent from North C...

Saga of the Cambria Community Service District starting in 1987 to develop a seawater desalination system stymied by the California Coastal Commission was abandon after a tumultuous period of opposition from vocal community groups and regulatory agencies due to enviornmental concerns. Modifications resulted in an Advance Water Treatment Project (A...

This paper looks at four separate membrane filtration facilities where universal or semi-universal membrane skids have been incorporated, comparing design approaches, contracting approaches and plant operation with comparable facilities using proprietary membrane filtration systems. The paper also discusses the impact on construction at one facilit...

The Guidelines for Water Reuse published by the United States Environmental Protection Agency (EPA) in 2012 facilitates development of water reuse by serving as an authoritative reference. The document covers both non-potable and potable reuse, but does not provide detailed information on current direct potable reuse practices. A challenge in imple...

The City of Carlsbad installed a 3.4 mgd UF facility to expand the reuse from the adjacent Encina Water Reclamation Facility. Water quality from the upstream wastewater plant resulted in various operational challenges during initial plant start-up. The plant operators and design-build team were able to adjust maintenance cleaning approaches and rep...

The Guidelines for Water Reuse published by the USEPA have served as an authoritative nationalwide reference in the support of state specific regulations. The document covers both non-potable and potable reuse, and was supplemented in 2017 with a Potable Reuse Compendium, focusing on key issues with the implementation of potable reuse. This present...

JEA recently completed Phase I of a 3-Phase plan to test and implement a potable reuse project. Phase I was a pilot-scale evaluation of alternative treatment trains (O3-BAF vs. UF/RO) on two significantly different source waters (residential vs. industrial/residential). This paper and presentation will present the approach and operating protocol us...

Deschutes Brewery, Inc (Deschutes), a large national craft brewery, evaluated emerging anaerobic technologies for pretreatment of process waste streams from its brewery in Bend, OR. Deschutes sought to identify the best feasible technology for recovering energy resources and decreasing the overall environmental footprint of its operation. Deschutes...

Deschutes Brewery, Inc (Deschutes), a large national craft brewery, evaluated emerging anaerobic technologies for pretreatment of process waste streams from its brewery in Bend, OR. Deschutes sought to identify the best feasible technology for recovering energy resources and decreasing the overall environmental footprint of its operation. Deschutes...

The City of Los Angeles (City) is implementing various strategies for developing a sustainable, local water supply portfolio. One of the key strategies includes a potential potable reuse project sourced from the Los Angeles-Glendale (LAG) Water Reclamation Plant (WRP), with purified water delivered directly to the potable water distribution system ...

The City of Los Angeles (City) is implementing various strategies for developing a sustainable, local water supply portfolio. One of the key strategies includes a potential potable reuse project sourced from the Los Angeles-Glendale (LAG) Water Reclamation Plant (WRP), with purified water delivered directly to the potable water distribution system ...

This presentation provides an overview of membrane treatment costs, particularly as they relate to the removal of CECs with membranes. The talk will discuss impacts that influence capital and operating costs, including feed water salinity, pretreatment requirements and brine disposal options. The impact of renewable energy and energy recovery on lo...

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