To prevent future filter problems, in your specifications, (1) list a substantial uplift resistance value, (2) ensure the medias are compatible, and (3) require robust commissioning testing. These three easy spec features will go a long way to ensure excellent filter performance....

Orthos Liquid Systems, Inc. (Orthos), the leading manufacturer of nozzle-based filter underdrain systems in water/wastewater treatment, is helping the City of Fresno CA to turn from its reliance on groundwater pumping through the commissioning of the new $159 million Southeast Surface Water ...

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