This presentation covers the existing work and infrastructure at the West Basin Municipal Water District. The focus then shifts to water resources and the need for diversification to a drought proof supply of water. The presentation ends with the various research programs undertaken by the district including their participation in the Affordable De...

West Basin Municipal Water District, California (which is located in southern Los Angeles County) is planning to construct a 0.5 MGD ocean/seawater reverse osmosis (RO) desalination demonstration facility as part of planning/preparing to ultimately develop a 20 to 40 MGD RO desalination facility to augment other water sources including their existi...

California water supply is a complex and dynamic topic. This presentation explains where California gets its water now and how sweater desalination will play an increasingly important role taking into account commercial, regulatory and technological factors. Case study information is provided for several projects including the West Basin....

This paper provides an overview of a dozen seawater RO projects in California. The projects are at various stages of development and vary in size from medium-scale facilities (<1 mgd) serving smaller communities to large-scale facilities (10 mgd+). The author predicts at least 10 projects online and producing water by 2020. The paper also addre...

The reduction of pH with acid is commonly used to prevent inorganic salts from scaling RO membranes. Because there is not yet available a proven anti-scalant to effectively inhibit calcium phosphate scaling, West basin doses sulfuric acid to a pH of 6.3 before the RO membranes. Rising costs of acid have led to the need for an optimization of acid u...

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...

Constructed in 1995, West Basin's Edward C. Little Water Recycling Facility (ECLWRF) treats municipal secondary effluent from the City of Los Angeles' Hyperion Wastewater Treatment Plant for a variety of reuse applications. West Basin has expanded the ECLWRF four times since startup, and has also added three satellites treatment facilities, which a...

This presentation provides an overview of pre-treatment strategies for the West Basin Municipal Water District. At this district, recycling/reuse of secondary effluent has been taking place since 1995. The typical pre-treatment processes are described and a list of process challenges and regulatory constraints are presented....

The purpose of this paper is to document the performance and integrity issues experienced at this facility and present a preliminary cost comparison to either repair or replace the Memcor 90M10C micro filtration (MF) units at the West Basin ExxonMobil Water Recycling Facility. Three options were evaluated; 1) continue repairing the existing MF sys...

West Basin Municipal Water District (West Basin) has chosen to follow a ?step-wise? approach to incorporating Ocean Water Desalination as 10% of West Basin?s diverse water portfolio. In 2002, West Basin began pilot scale testing to determine the viability of Ultrafiltration (UF) and Reverse Osmosis (RO) as treatment processes to produce potable des...

The goal of the Wwest Basin's Temporary Ocean-Water Desalination Demonstration Project was to demonstrate an environmentally responsible, energy efficient, reliable desalination process. The specific objectives were to develop data for the permitting, design, construction, and operation of West Basin's proposed full-scale desalination facility. The...

Prior to the introduction into a drinking water distribution system, desalinated water requires post-treatment that involves the addition of minerals back into the water to provide a water quality that is non-corrosive toward distribution system materials. Blends of desalinated ocean water, treated surface water and local groundwater were circulate...

West Basin Municipal Water District (West Basin) is known as an early adopter of membrane technologies for both industrial and potable reuse. West Basin has experienced severe fouling of its MF membrane in recent years as a result of feed water quality changes, aging infrastructure, and obsolete treatment technologies. In response to years of deter...

This presentation will discuss West Basin Municipal Water District as a case study for innovative uses of recycled water. In its 20th year of water recycling with membrane technologies, West Basin has cultivated an approach to providing its customers with fit-for-purpose designer water qualities. The discussion will include how West Basin treats se...

his presentation will discuss the lessons learned by West Basin from 20 years of membrane application, discuss West Basin?s current effort to catch up and implement several industry standards, and share how West Basin plans for its future water reliability and expansion. Specifically, the presentation will review West Basin?s past designs, construc...

This paper will discuss the lessons learned by West Basin from 20 years of membrane application, discuss the current effort to catch up and implement several industry standards, and share how they plan for its future reliability and expansion....

This paper discusses efforts at West Basin to review specifications for some the latest generation of pressurized MF/UF modules and interchangeable formats for possible use in the future. Pilot plant data is presented. They found that there is a substantial level of consistency among PVDF current product...

The results of the pilot testing of 6 different membrane module evaluated over the past year will be presented and discussed. The presentation will focus on the variations of backwashing and cleaning strategies used to treat the water, and will discuss the differences in membrane fouling rates that occur as a result of operation on secondary efflue...

This presentation provides an overview of the design of a custom engineered microfiltration for West Basin Municipal Water District. The system is designed to accept 6 different membrane modules. The presentation will review design and procurement challenges for this system....

This presentation will share the successful planning and design of an innovative tertiary membrane bioreactor (TMBR) facility. This facility will provide flexibility to meet future water quality challenges, reduce costs to enable water reuse while preserving potable water, and manage operational costs through innovative design....

The West Basin Municipal Water District?s Edward C. Little Water Recycling Facility (ECLWRF) located in El Segundo, CA is a world class facility that produces four qualities of recycled water for municipal, commercial and industrial applications including water supply to injection wells that are part of West Coast Barrier System. The source of recy...

This testing will characterize RO elements for fouling performance and TOC rejection while treating ozonated secondary effluent. This paper will document the results of this testing, offering an important body of data that will be of use in the selection of RO membranes for all potable reuse projects considering the use of ozone as pretreatment to ...

West Basin's Custom Engineered Microfiltration Pilot Unit has been in service for over a year now testing six different pressurized PVDF modules in parallel using West Basin's Title 22 water as a feed source. The results of Phase 1 of testing, which involved piloting these modules using manufacturer recommended sequences for backwashes, CEB, and CI...

Today?s industrial reuse challenges require innovative solutions. This presentation will share the successful planning and design of an innovative tertiary membrane bioreactor (TMBR) facility. This facility will provide flexibility to meet future water quality challenges, reduce costs to enable water reuse while preserving potable water, and manage...

The water reuse industry has transitioned from proprietary microfiltration (MF) systems to MF systems designed by original equipment manufacturers (OEM) that can be adapted to operate a handful of membrane module types. These ?Universal? systems rely on OEMs to dictate generic operating parameters. West Basin has constructed its own pilot system to...