WWTP Design and Innovation Improves Chesapeake Bay with Denitrification

Using a highly effective filtration system that stays clean in large part through automated backwash processes, innovations such as using site-captured methanol to reduce effluent nitrogen and system design that includes the flexibility and scalability to handle regular heavy wet weather events as effectively as normal flow, the Arlington County WPCP reports nitrogen effluent to below 2.0 mg/l, down from a 1985 level of 19.5 mg/l; and phosphorous levels below 0.1 mg/l.