This presentation provides an explanation of the role of "CalDesal" as a unified voice for water desalination and salinity management in the state of California, This advocacy group is focusing on environmentally responsible water desalination process and is working with various regulatory agencies to streamline the desalination permitting process...

This presentation provides an overview of the regulatory framework related to the use of membranes in the State of California. California's permitting process for new treatment facilities and the certification requirements are described. There is also reference to performance and integrity testing requirements are described and some of challenge...

This presentation provides an overview of membrane systems residuals management. It covers residuals from Microfiltration (MF), Ultrafiltration (UF) as well as Reverse Osmosis (RO) and Nanofiltration (NF). Practical and beneficial reuse considerations are explained....

This presentation provides details about Twin Oak Valley water treatment plant located in Northern San Diego County. This is a 100-mgd drinking water treatment plant with GE Submerged Membranes. AN overview of the permitting, construction, operations and cleaning chemicals and energy costs is provided....

This presentation provides a summary of installation of a new Membrane Bioreactor (MBR) at the city of Healdsburg in California. This MBR plant replaced an existing old Biological secondary wastewater treatment process which had to be upgraded due to having challenges with meeting the plant's new NPDES Permit Limits....

This presentation covers a case study about a combined membrane and conventional filter water treatment plant located in Yuba City 43 miles north of Sacramento, CA. They observe that membrane filtrate quality is more stable compared to filter effluent and membranes can successfully operate with conventional filters....

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 emphasizes on the importance of maximizing recovery at MF/UF systems. Several cases are presented and suggestions such as using more efficient backwashing (by using less water each time and backwashing less frequently) are elaborated. Benefits of using less water and creating less wasted water are explained in detail....

This presentation provides a comprehensive background and terminology definitions for low pressure membrane unit processes. It covers backwash Clean in Place, Membrane Integrity Testing and other operational considerations for Micorfilation and Ultrafiltration membrane systems....

This presentation provides an overview of membranes used for thickening in aerobic digestion process. The benefits include: superior thickening without use of polymers; require very minimal operator attention; permeate can be sent to disinfection or to the head of the plant; and result in savings on hauling, operating, and energy costs....

This presentation provides an overview of different types of MBRs and recommends selection guidelines for them. Emphasis is placed on different manufacturers and highlights the importance of target water quality; regulatory and space constraints; power and operational requirements; and costs for making a proper selection....

This presentation provides many examples of failure modes of MF/UF Hollow Fiber membranes. The manufacturing defaults as well as lack of adequate pretreatment, inefficient operations and changes in water quality are listed as some of the parameters resulting in failure of these membranes....

This presentation covers lessons learned at the Gibson Canyon Water Treatment Plant located in Vacaville, CA. The plant consist of Hollow Fiber MF racks with a design capacity of 1.3 MGD. One important lesson is related to membrane cleaning cycle. It is emphasized that extended soak will reduce the frequency of cleaning and will result in low...

This presentation provides a comprehensive overview of MBR Operation and Maintenance. A basic conceptual review of MBRs is provided and significance of proper mechanical check-out of Pumps, Blowers, air diffusers, instruments and valves as well as proper clearing proper cleaning procedures is emphasized....

This presentation covers investigation of manganese precipitation downstream of an ultrafiltration plant. Different oxidants and dosages for Mn precipitation were evaluated. It was concluded that ultrafiltration membrane does not retain Mn2+ but and it must be oxidized to MnO2 and precipitate before the ultrafiltration process....