County Utility Plans MBR Project

The Arapahoe County Water and Wastewater Authority (ACWWA) recently selected the consulting engineering firm of Richard P. Arber Associates to design upgrades to the Lone Tree Creek Wastewater Treatment Plant.

The Arapahoe County Water and Wastewater Authority (ACWWA) recently selected the consulting engineering firm of Richard P. Arber Associates to design upgrades to the Lone Tree Creek Wastewater Treatment Plant.

The Lone Tree Creek Plant is located in Colorado's Cherry Creek Basin and is unique in that it was the first large scale Membrane Bioreactor (MBR) system to be installed in the United States. MBR technology was first installed at the facility in 1998 to meet stringent effluent phosphorus limits.

The Lone Tree Creek Plant receives wastewater primarily from commercial and residential customers in the southeastern metropolitan Denver area. Stringent limits on phosphorous in wastewater discharges are required to protect the Cherry Creek Reservoir, located downstream from the plant. MBRs consist of membranes installed in biological reactors to separate the suspended biomass from the treated wastewater, producing a high quality effluent. The upgrades being designed by Arber Associates include new Zenon MBRs and modifications to improve operational flexibility and reliability.

Will Koger, ACWWA Engineer stated, "We selected Richard P. Arber Associates for this important project because they had a good understanding of the issues we need to consider with the plant upgrade. They also have a strong track record with similar projects."

More in Home