Rehabilitated equipment for municipal surface water treatment plant with a rated capacity of 60 mgd serving 110,000 customers. 960 man hours saved annually; ROI gained in 3 Years; will not have to replace for 20 years.

Maintenance of the 33-year-old bar screens at the Kalamazoo (Mich.) Water Reclamation Plant was stressing the operators. Shear pin failures occurred often, and almost always on weekends. The worn and corroded mild steel frames allowed chain guides to wobble, requiring constant chain tension adjustments. When some 1-inch screen rack bars broke, they weren’t replaced because of their difficult location and the unit’s age. Operators worried that rags slipping through the larger gaps would clog pumps and flood lift stations. 

Replaced cast iron rake chain with DuraMax cast stainless steel chain for automated chain and rake bar screen on a 50 foot deep by 4 foot wide bar screen for wastewater treatment plant with a rated peak capacity of 28 MGD serving approximately 40,000 municipal and industrial customers. Joliet has saved an average of 264 man hours every year since 2004.

Replaced flocculation equipment at a municipal surface water treatment plant with a rated capacity of 6 mgd capacity serving 18,500 customers. Reliable equipment saves Cudahy $15,000/year in repair cost and greaseless, durable bearings eliminated need for extra expense of grease lines and related maintenance/repairs. 

New construction for capital equipment retrofit and replacement. Replaced lift bar screen, collector chains, and head-and footshaft sprockets. Grafton plant has a rated capacity of 2.5 mgd serving a population of 11,500. Effluent discharged to Milwaukee River, with permit limitations of 30 mg/l BOD, 30 mg/l suspended solids. The plant achieves 90 to 99% pollutant removal. 

Rehabilitated clarifier and associated equipment for municipal wastewater treatment plant with a rated capacity of 0.5 mgd serving 1,500 people. Saved 384 contracted man hours (approximate $20,000 yearly cost saving).

Replaced cast iron rake chain with DuraMax cast stainless steel chain for automated chain and rake bar screen on a 50 foot deep by 4 foot wide bar screen for wastewater treatment plant with a rated peak capacity of 28 MGD serving approximately 40,000 municipal and industrial customers. Joliet has saved an average of 264 man hours every year since 2004.