Problem: Operators of the Scarborough Wastewater Treatment Plant in Narragansett, Rhode Island, wanted to produce more uniform and consistent consistency to affect a more readily dewaterable biosolids.

Solution: C3ND Environmental Consulting provided a PHi-CA mixing system from Pulsed Hydraulics due to its simplicity, mixing energy, and ability to maintain consistently uniform sludge solids throughout the holding tank. The system can be operated as needed when the dewatering process is ongoing. The system consists of a bubble-forming plate connected to 50 feet of chemically resistant air hose and a 1 hp linear air pump. Since this is a portable device, the Scarborough staff moves it to one or more of their pump stations to eliminate grease and other debris accumulation. 

Result: Requirements were met and verified by the customer’s Superintendent Scott Goodinson, president elect of NEWEA. 

800-641-1726; www.phiwater.com