The Leopold® FilterWorx™ system is engineered to improve efficiency and reliability. Ideally suited for applications such as potable drinking water treatment, tertiary wastewater treatment, nutrient removal in water or wastewater, pretreatment prior to low-pressure membrane systems, and RO membrane desalination pretreatment, FilterWorx performance filters feature a flat-bottom flume, fiberglass backwash water troughs, engineered media, three types of underdrains, and media retainers in two different sizes.
The Durango wastewater treatment facility is a traditional waste-activated system. The biosolids (WAS) is collected from secondary clarifiers, treated with flocculants, and thickened before an anaerobic digestion. A centrifuge had been used for the thickening process, which dewatered the WAS to an 8 percent to 10 percent consistency. The plant had three 50-horsepower units and used either one or two of the units as needed.
The City of Alliance, OH's water system has experienced annual taste and odor (T&O) events since the mid-1950s, when the first of two reservoirs, Deer Creek Reservoir, was placed into service. Nutrient contaminants in the watershed, in particular phosphorous, accumulated in the reservoirs, causing algal blooms.