Two Tsurumi influent bar screen systems have been installed a wastewater treatment plants in Michigan, U.S.A. The screens installed are model KMS, rear-screen, dry chain type automatic bar screens.

Screen installation at Lazy Oaks, MI 80,000 GPD Sequence Batch Reactor wastewater treatment plant.

The systems were installed at the Stoneridge, MI 50,000GPD (190M3/D) SBR plant in March 2006, and at the Lazy Oaks, MI 80,000 GPD (300M3/D) SBR plant in August. Both plants serve newly developed residential subdivisions. The pre-cast tank system and equipment were installed by HTI, Inc. of Traverse City, MI. Aeration Products, Inc. of Cincinnati, Ohio, supplied the screens. Automatic Bar Screens Model KMS-series screens  [ 2 units ]

At both installations, the screen is in an aluminum box suspended from the cover over the equalization tank. This aluminum box has a inlet baffle to reduce inlet flow velocities. During normal operation all the flow goes through the mechanically cleaned bar screen. If maintenance is required, a slide gate diverts the flow through a bypass channel with a manually cleaned bar screen.

Stoneridge installation showing screen and collection baskets.

Aluminum Box to hold the manually cleaned bar screen and with the bypass channel.

Screen installation at Lazy Oaks, MI 80,000 GPD Sequence Batch Reactor wastewater treatment plant.

The system offers various advantages to plant operators such as, improving collection of floatable items, reducing maintenance time for plant operators, and removing these materials more effectively than grinders or other solutions.