This paper will present the design issues considered throughout the feasibility study and pilot plant design process and identify critical issues associated with siting a desalination facility in land-limited areas. It will also describe the pilot test protocol, specific test objectives, and the design of pretreatment and SWRO systems expected to b...

The presentation provides an overview of removal capabilities, system configurations, fouling, management of residuals, regulations and integrity monitoring. The importance of pretreatment is also discussed providing the reader with a basic understanding of microfiltration and ultrafiltration....

The advanced water purification center for the city of Oxnard will employ MF/RO/UV-AOP process to treat an initial capacity of 6.25 mgd of secondary effluent to title 22 reuse standards. The site will have a build out capacity of 25 mgd. Effluent will be split into 3 streams: landscape irrigation, agricultural irrigation, and ground water recharge....

Recycled Water Quality Management Plan (RWQMP)...

This paper examines three advanced water reclamation facilities that utilize treatment schemes developed to produce high quality treated water suitable for indirect potable reuse. It discusses how the schemes were developed to address geographical, political and regulatory requirements that result, for some contaminants, different treated water lim...

Presents case study on method of RO concentrate treatment in coal seam gas water treatment. Background on CSG production in Australia. Description of MAX-RO process using ceramic UF, IX, and RO for brine recovery. Results from treatability study are presented....

The extraction of coal seam gas (CSG) produces significant quantities of brackish water. After separation, the brackish water is typically treated by RO plants to enable beneficial use of up to 90% of the water, with the remaining RO concentrate (or brine) stored until its final management is determined. Reducing brine volume through further treatm...

This presentation provides an overview of membrane cleaning and system integrity testing. It describes how both MF/UF and RO membranes require cleaning to restore lost performance. It explains when to clean; what chemicals to use; and key elements of cleaning operations. This paper emphasize that adequate pretreatment and proper operation will go...

This presentation provides an overview of membrane system design concepts. It covers basic design equations, site-specific issues, and membrane specific issues. Suggestions are made related to process design approach, variability in source water quality and treated water demand. Ancillary systems consisting of: feed systems, backwash systems, c...

ADAPTING TO THE WHIMS OF NATURE: POST-CONSTRUCTION AUTOMATION OF MF/RO SYSTEMS WITHIN A LARGE ADVANCED WATER REUSE PLANT FOR INTERMITTENT OPERATION. The paper outlines the modifications to the automation and control strategies associated with the operation of the MF and RO systems to allow for intermittent low-flow operation without compromising m...

The implementation of membrane technologies in water treatment plants has grown significantly in the last decade driven by cost competitiveness, space efficiency and high throughputs compared to conventional technologies. The market growth for membranes has been impressive especially considering that earlier this decade continuous product innovatio...

This paper presents a firsthand account of how water quality and operational challenges have been addressed to improve plant reliability. The overall methodology to address each challenge, including treatability and monitored data, will be presented. ZLD facilities present unique challenges since any constituents that enter the facility in the untr...

The information presented in this paper provides a great value for agencies and consultants who are considering use of seawater desalination as a means to supplement current water supplies and plan to introduce desalinated seawater into their existing distribution system. Testing methodology and outcomes of the study are provided....

This paper describes a water management study conducted in the arid southwestern U.S. to evaluate treatment options for a high salinity RO reject that is produced as a waste stream from high purity water production within an electronics facility. Increasing RO reject flows, coupled with a fixed volume within existing solar evaporation ponds for con...

As the gap between world-wide water supply and demand widens and the availability of fresh water supplies dwindle, neew technologies are urgently needed to treat impaired waters in a sustainable manner. RO represents the best current tecchnology to meet this need but dispite major advancements in RO membrane efficiency and significant reducations i...

This paper presents summary results of bench and factory testing of the MAX-RO process, used to develop a concept-level design for a full-scale brine volume reduction facility. Reducing brine volume through further treatment can significantly reduce the cost and legacy risks associated with long term brine storage. Working with one of the major CS...

This paper presents the Water Corporation of Western Australia's strategy includes the construction and operation of the Beenyup Advanced Water Recycling Plant, which will transform wastewater effluent into recycled water meeting all drinking water related standards and guidelines. The facility is planned to start up in 2022 with advanced water t...

On-line integrity monitoring of NF and RO membranes for demonstrating pathogen removal using the Nalco TRASAR(TM) fluorescently-tagged antiscalant was evaluated at pilot scale. The results showed that 2.5- and 3-log removal can be achieved for NF and RO membranes, respectively; significantly greater than can be achieved using conventional monitorin...

Drought conditions and imbalances between supply and demand in the Colorado River watershed have demonstrated the need for the development of long-range measures to manage and stretch the system's water supplies. One of the options to address this issue is operation of the Yuma Desalting Plant (YDP), which has been mostly out of service since its c...

Designing a membrane plant with the right parameters ensures that finished water production and water quality goals are achieved while minimizing unforeseen, premature and costly membrane module replacements. However, even with pilot testing, it is challenging to predict the impacts of seasonal or long term changes in raw water quality and the eff...

Designing a membrane plant with the right parameters ensures that finished water production and water quality goals are achieved while minimizing unforeseen, premature and costly membrane module replacements. However, even with pilot testing, it is challenging to predict the impacts of seasonal or long-term changes in raw water quality and the eff...

Methodology and results of challenge testing conducted with full-scale UF and RO systems using MS2 phage and Rhodamine WT, respectively, to gain 3-log virus removal credit for both membrane processes at the Beenyup Advanced Water Recycling Plant groundwater replenishment (IPR) scheme in Perth, Australia....

This paper will describe the use of a unique organics characterization method, liquid chromatography with on-line carbon detection to identify the primary cause of organic fouling in two fouling scale ultrafiltration plants, biopolymers and cTEP, and how the LC-OCD results were used to mitigate the impacts of these foulants through optimization of ...