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The Water Authority of Istanbul serves a population of around 15 million people with a biological wastewater treatment plant. To meet strict environmental regulations, the Water Authority hired Marine Consultants Group (MCG) in April 2017 to help find a suitable product for their marine wastewater outfall. Duckbill diffusers designed by MCG and Proco convey effluent from the treatment plant via an 87-inch-diameter steel pipe. The pipe is 1.35 miles (2230 meters) long and ends 154 feet below sea level. Proco had several concerns abo... more