Duckmaloi Water Treatment Plant MEMCOR® CS Submerged Membrane System Innovative Retrofit Improves Filtration with Minimal Cost

Duckmaloi Water Treatment Plant MEMCOR® CS Submerged Membrane System Innovative retrofit improves filtration with minimal cost

MEMCOR CS submerged membrane system — leveraging existing Industry Municipal Water clarifiers to improve water quality Enhance water quality to Business meet tighter regulatory A plant facing higher water standards, the Australian town of Lithgow, challenges west of Sydney, relies on the Duckmaloi Water Treatment Plant for its requirements drinking water. Run by the Fish River Water Authority (FRWA), the plant Identify a solution that is set on the Duckmaloi River 10km downstream of the Oberon Dam. simplifies installation Feed water is drawn from both the dam and a weir on the river. The plant Keys to success design to reduce capital consists of 2 x 2.6 MGD (10 MLD) horizontal clarifiers without filtration. costs and construction However, due to tightening water standards, FRWA decided in 2003 to times upgrade the plant to meet the new benchmark in water quality. 2.9 MGD (11 MLD) total Retrofit uses innovative approach to improve water quality Results capacity of high quality potable water The new plant used MEMCOR® CS submerged membrane systems as an Solutions/ MEMCOR® CS submerged innovative retrofit of the old clarification plant. services membrane system One of the clarifiers was divided into 2 sections, where: The Duckmaloi Water • The flocculation zone of the clarifier became the MEMCOR CS Customer’s Treatment Plant serves a system plant room, and was fitted with the submerged membrane primary business rural population of 12,000 cell and all ancillary equipment and controls west of Sydney, Australia. • The settling zone was converted into additional treated water storage Lithgow, New South Customer location The single cell contains 448 x S10V modules. One spare rack is available Wales, Australia for future expansion. The feed is drawn through the 0.04µm porous membrane by the filtrate pump. The cell also employs rack inserts, which increase the efficiency of the unit for minimal cost. The unit uses backwash and clean in place (CIP) to ensure stable and reliable performance. The backwash uses the existing clarifiers sludge removal system. However the backwash does not get recycled, instead it is sent to sludge lagoons. The Duckmaloi Water Treatment Plant is fully- automated with control of the plant performed via PLC.

www.evoqua.com MEMCOR® membrane systems overview Advantages of MEMCOR MEMCOR® membranes from Evoqua Water Technologies represent the broadest membrane systems range of low-pressure membrane filtration products — submerged, pressurized, • Physical barrier to prevent large or small capacity systems. With a product history spanning 25 years, Cryptosporidium, Giardia, MEMCOR membrane systems process billions gallons of water per day in potable, bacteria, turbidity and wastewater reuse, industrial process water and pre-treatment to RO in seawater suspended solids without applications. the need for chemical The MEMCOR CS submerged membrane system is a robust, modular treatment pre-treatment system ideal for high solids applications, large capacity systems and conventional • Flexibility to handle treatment plant retrofits. The open tank design allows for visual inspection for changing feed water easy operation and maintenance. Each cell can be sized from less than 4,000 conditions and capacity kL/d – 40,000 kL/d. demand increases A simple design keeps costs low and construction times short • Simple, automated operation ensures system Keeping the existing clarifier structure simplified the design, reduced construction integrity and provides time and significantly lowered capital cost. And the upgrade provides 2.9 MGD (11 advanced notice of MLD) of high quality potable water. potential maintenance The Duckmaloi Water Treatment Plant is now able to supply the Greater Lithgow Area, Oberon Council, Delta Electricity and the Sydney Catchment Authority.

MEMCOR® MEMBRANES

Sand Filter Large Product Pressurized Submerged Water Reuse Potable Water High Solids Small Systems Retrofits Capacity CP n n n n n

CS n n n n n n

XP n n n n n XS n n n n n

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