Biological Treatment System
- 31 acres of aerated lagoons
- 90,000,000 gallon storage capacity
- 40 to 45 day detention time
- 2 300-horse power blowers produce 7,000 standard cubic feet per minute each
- 4 50-horse power blowers produce 1,100 standard cubic feet per minute each
Lagoon No. I
- 1,600 feet north to south, 500 feet east to west, 10 foot-depth
- 392 sub-surface air diffusers
Lagoon No. II
- 1,280 feet north to south; 250 feet east to west; 10 foot depth
- 104 sub-surface air diffusers
Biological Treatment
Reduces concentrations of:
- Ammonia Nitrogen (NH3-N)
- Biological Oxygen Demand (BOD)
- Suspended Solids (SS)
Secondary Treatment System
- Chemical treatment
- Ferric Chloride used to remove phosphorus, chlorine used for coliform control
- Two 375,000 gallon capacity up flow clarifiers for phosphorus, suspended solids removal
System Components
- 65 miles of sanitary sewer lines
- 11 pumping stations.
- 11 additional pumping stations owned/operated by Pere Marquette Township, Mason County DPW, City of Scottville and Tamarac Village Mobil Home Park also pump sewage to the Ludington WWTP