This paper will present the results of the reverse osmosis membrane plant pilot studies conducted from March through November 2003 at the Irvine Desalter project in California....

Fouling study on an existing nanofiltration plant to reduce concentrate volumes for cost savings....

Case study of 2 plants at Irvine Ranch Water District. Lessons learned and different approaches taken for each unique water source....

Irvine Ranch Water District (IRWD) and other retail water agencies in south Orange County, California are planning to construct a new regional surface water treatment plant (Baker WTP) to improve the reliability of local potable water supply....

This paper and presentation will provide the steps and methods used by the Irvine Ranch Water District (IRWD) on the permitting and concentrate recovery methods for the Irvine Desalter Project (IDP) and the Deep Aquifer Treatment System (DATS)....

In order to improve the reliability of the potable water supply to more than one million residents in South Orange County, California, Irvine Ranch Water District (IRWD) has partnered with several and other water agencies in the region to design and construct the Baker Water Treatment Plant (WTP), a new 28 MM gallons per day (mgd) advanced water tr...

This presentation provides an overview of MBR technology and presents a case study for procurement of MBR. Advantages of MBR including higher MLSS concentrations; effluent quality not dependent on operations; smaller footprint, modular units and other parameters that result in a higher quality effluent are Included in the presentation....

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 paper focuses on how the Irving Ranch Water District has incorporated MBR technology into its water recycling program. The paper details the planning, design, and construction process which could help other agencies that may be considering implementing a large scale membrane bioreactor to meet their increasing water demands...

This paper is a case study of the Irvine Ranch Water District (IRWD) in Orange County, California that provides potable water (local groundwater and imported), wastewater treatment for the production of recycled water, and natural treatment system to clean urban runoff. IRWD has several membrane treatment facilities that include the Deep Aquifer T...

This large-scale membrane bioreactor (MBR) project by a progressive water agency in semi-arid Southern California provides a useful model for others to emulate. The project advances the use of the MBR process and provides for expansion of recycled water to new uses. This paper and presentation show how a variety of participants, many of whom are ...

The IRWD was a typical water agency in southern California, utilizing imported surface water supplies for potable water usage. As demands for water increased the District evaluated multiple, local water sources, resulting in the development, construction, and operation of five membrane technologies: DATS NF, CATS NF Plant, DP-PTP RO Plant, Desalter...

Construction of the 28 million gallon per day (mgd) Baker Water Treatment Plant (BWTP) will be completed in October 2016, allowing the Irvine Ranch Water District and its five partner agencies El Toro Water District (ETWD), Moulton Niguel (MNWD), San Margarita (SMWD), Trabuco Canyon Water District (TCWD), and Metropolitan Water District of Orange C...

Demonstration study results of an alternative membrane for application at a concrete recovery membrane system will be provided including train modifications, test protocol, operating procedures, process control monitoring, data gathering, results, and recommendations. Experience gained from testing an alternative membrane will be shared with fellow...

Reverse Osmosis (RO) systems are monitored and maintained using a combination of SCADA, laboratory analysis and manual inspections. Changing factors such as temperature, feed water quality, permeate flow and system recovery can all have an effect on membrane performance. "Normalizing" RO data allows comparison of membrane performance to a baseline ...

Membrane plants using spiral wound membranes typically are constructed with instrumentation for monitoring the performance across the entire train, however, membrane plants are typically comprised of multi-staged trains, and to properly perform the process control and monitoring of each stage, many existing plants must be retrofitted. The case stud...

The Deep Aquifer Treatment System (DATS) is an 8-mgd nanofiltration (NF) plant owned and operated by the Irvine Ranch Water District (IRWD) located in Santa Ana, California, that was put online in February 2002 and has successfully operated in the removal of natural organic color causing compounds utilizing organic selective membranes. The facility...

The Deep Aquifer Treatment System (DATS) is an 8-mgd nanofiltration (NF) plant owned and operated by the Irvine Ranch Water District (IRWD) located in Santa Ana, California, that was put online in February 2002 and has successfully operated in the removal of natural organic color causing compounds utilizing organic selective membranes. The facility...