Equipment reduces odors and energy costs
Problem
Strong odors emanated from the Martinsville (Va.) Wastewater Treatment Plant, affecting nearby tourist venues.
Solution
Operators installed two 1,200 mm Hy-Pack filter presses from Beckart Environmental to dewater and compact biosolids, and a single-stage Aqua3000 chlorine dioxide generator (also Beckart) at the headworks to mitigate odors.
Biosolids costs went from $320,000 to $160,000 annually. By eliminating two 200 hp blowers, the plant saved $180,000 annually in electric bills. 262/656-7680; www.beckart.com.
Surfactant reduces chemical oxygen demand
Problem
A chemical manufacturing plant in the northern Midwest had 4,000 to 10,000 mg/L of COD in its discharge water.
