Step by Step

A five-stage process with automated dissolved oxygen control provides a reliable, efficient and highly compliant solution for a new Florida reclamation plant.

Nov 19, 2013 | by Scottie Dayton |

WesTech Engineering Clarifier Wastewater Treatment System HUBER Technology, LLC. Step Screen Drum Screen Hydro International Grit Chamber Aerator MIOX Corporation Chlorination/Dechlorination Equipment

Step by Step — The WesTech OxyStream Five-Stage Advanced Biological Nutrient Removal System With Components

Step by Step — Kijafa Lee, wet process plant manager (left), and Ray Yarbrough, biosolids plant manager, with the biological nutrient removal system at the Central Water Reclamation Facility (WesTech Engineering).

Step by Step — By using four treatment trains, the OxyStream five-stage system removes phosphorus and nitrogen to minimal levels.

Step by Step — The impeller’s design on a low-speed LANDY-7 surface aerator (WesTech Engineering) increases oxygen transfer efficiency and reduces axial and radial loads.

Bnr Diagram

Central Water 1

Central Water Reclamation Facility

Landy 7 Aerator

When designing the 22.5 mgd Central Water Reclamation Facility in Cantonment, Fla., Baskerville-Donovan engineers specified oxidation ditches. The technology was familiar because the 8.2 mgd (design) Bayou Marcus sister facility had a four-stage biological nutrient removal (BNR) system.WesTech Engineering won the bid for the project, which replaced the outdated and undersized Main Street Wastewater Plant. The firm supplied four five-stage 7.2 mgd OxyStream treatment trains and clarifier optimization packages. “We added the fifth stage — the reaeration zone — to help polish the water,” says lead operator and plant manager Kijafa Lee. “It adds a little more dissolved oxygen to

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