Active mixing in Twin 270,000 gallon tanks - Case study
Temperature Stratification Eliminated - Consistent Chlorine Residuals
Topics: potable tank mixing, stratification, chlorine residual
Location & Contact Information: Further information may be available upon request. Please contact Medora Corporation by phone at 866-437-8076 or by e-mail, email@example.com
System Overview: Treated water is purchased from a third-party Water Authority and serves about 1500 connections.
Tank / Reservoir Build Information:
- Tank Type: Two (2) Identical, Cylindrical, Steel GST
- Tank Size (Gallons): 270,000
- Height (ft.): 16
- Diameter (ft.): 54
- Hatch Size (in.): 30 x 30
- Roof Type: Flat
- Average Depth (ft.): 12
Disinfectant Type: Chlorine
Pre-Deployment Conditions: Thermal stratification, short-circuiting, and inadequate mixing resulted in variable and inconsistent chlorine residuals.
Solution: One (1) SolarBee® SB Series Small Frame potable Tank Mixer per tank. (April 2012)
Results: Thermal stratification and short-circuiting have been resolved and chlorine residuals are consistent. The City is very satisfied with the sustainable water quality benefits solar-powered circulation continues to provide, as well as with ongoing customer service and technical support.
Update (2018): A Medora Service Crew returned to perform a routine maintenance check on the SolarBees. During their examination they found the entire water column thoroughly mixed with no signs of stratification.