Application
- Consumer Beverage Waste Water Pre-Treatment Plant
Material
- Aerobic Digested Sludge
- .5% -.75% Solids
Problems & Challenges
- Very Difficult Sludge to Dewater due to Low Bulk Solids and Process Issues
- Existing 1.5 Meter Press Single Belt Unit Process Rate of 8 – 12 GPM is Too Slow to Effectively Remove Sludge from the Plant
- Free Water Visible in the Roll Off Container Containing “Dewatered” Cake
- Cake Solids Too Low (4-8%) and the Landfill is Threatening to Reject the Loads
- Expensive Liquid Hauling had to be Used to Supplement Belt Press Dewatering
- Owner Desired to Dewater Only One Shift per Day (or Less)
- Sludge will Flow Over the Roll Off Container Walls when the Driver Tilts it to Load
- No D.O. (Dissolved Oxygen) in the Liquor (Sludge) because of Slow Solids Removal
Solution: Pilot Testing, Equipment and Support from Bright Technologies
- Bright Lab Tested the Sludge and Pilot Tested at the Customers Site to Confirm Lab Results and Establish “Real World” Parameters for System Design and Sizing.
- Pilot Test Revealed that our 0.8 Meter Dual Belt Press could do >30GPM at 15% Cake Solids
- A Complete System was Designed, Manufactured, & Delivered
- Bright Assisted in Polymer Testing and Evaluation
- Bright Trained the Owner’s Operators and offered valuable process assistance.
Old Vs New Equipment Comparison
- 1.5 Meter Single Belt Press 8 – 12 GPM @ 4 – 8% Cake Solids
- Bright 1.7 Meter Belt Press 80 – 100 GPM @ 14 – 16% Cake Solids
Results
- Running 8-9 Times the Flow Rate of the Single Belt Press & 6-10% > Solids
- Sludge Transportation & Disposal Cost Slashed by >50%
- Can Make Daily Productions Rates Running Only One Shift
- Meets Landfill Criteria Every Time!
- Sludge D.O. Levels in the Mixed Liquor (Sludge) Restored to 5 – 6
- More “Forgiving” of Sludge Variation than the Previous Equipment
- Bright Technologies Equipment & Support Exceeded the Owners Expectations
