Lancaster’s Upper Hocking WPCF is a novel membrane bioreactor treatment facility with a current rated capacity of 2 MGD and detailed design underway on an additional 2-MGD expansion. Following influent fine screening and biological treatment in a series of vertical loop reactors, mixed liquor enters one of three membrane tanks equipped with 0.1-micron hollow fiber membrane racks. These membranes provide a reliable, space-efficient, and low-maintenance means of solids separation, allowing the plant to forego tertiary disinfection and discharge high-quality effluent to the Hocking River. Periodic cleaning cycles with citric acid and sodium hypochlorite have kept the membranes operating effectively for over ten years of frequent service.
This presentation is available to AMTA Members only.
- Benjamin Cario
- AMTA Technology Transfer Workshop, Lancaster, OH
- AMTA Technology Transfer Workshop
- Membrane Bioreactors, Wastewater Treatment, Hollow Fiber Membranes