The Jackson WWTP was upgraded to manage peak flows without adding flow equalization. In addition, upgrades to various unit processes were included in the project to assure good service.
These upgrades were in response to EPA findings and orders to eliminate SSOs in the collection system. The improvements involved a SCADA-managed distribution of increasing influent flows to sequential active parallel plants, an active MBR plant, a low flow oxidation ditch plant, a peak flow oxidation ditch plant, and an existing flow equalization lagoon. The construction included a waste-activated sludge holding tank for seeding the high flow oxidation ditch for peak flow secondary treatment.
The improvements included site piping, level sensors, and meters to control pumping stations and flow splitting weirs, gates, and valves. The sludge tank was also equipped with level instrumentation and a flow meter to control the seeding operation.
In addition, upgrades to various unit processes were included in the project to assure good service. These included clarifier motor control retrofits, a new influent coarse screen and washer compactor, digester aeration, and sludge pumping.
*Some photos courtesy of Geiger Brothers, Inc.