1105. improved performance in solar biosolids dryer ...€¦ · odor control aeration is key no...
TRANSCRIPT
Chris Hubbard
Solar Dryer Advantages
Solids volume reduction
Reduce solids disposal costs
Adaptable
Solar energy is ‘free’
Create a saleable product
“Biosolids becomes one of the biggest parts of wastewater treatment. Often it is the where you spend most of your time.”Dan Olson, Plant Superintendent, Tooele City WWTP, UT
Solar Dryer Challenges
A Slave to the Sun
Limited by solar heat availability
Materials Handling Requirements
Loading, Mixing, Unloading
Environmental Concerns
Odor and Dust Control
Maintenance and operational
Equipment Reliability & Maintenance
Not a ‘Slave’ to the sun- use supplemental heat
In-floor Radiant HeatSuppliments the Solar power available
Waste Heat from nearby process
Heat pumps
Cogeneration
Not a ‘Slave’ to the sun- use supplemental heat
Sewage / plant effluent: RoWin Heat
Exchanger to capture waste heat
Can be used in a stand-alone
application, or in conjunction with
heat pumps.
Materials Handling
Using a single turning device and continuous process system instead
of a batch system reduces materials handling challenges
VS.
Materials Handling Loading (Charging)
Ease of solids loading (charging)- Conveyors or trucks can
be used to charge the system at the ‘front’ end
No need to manually distribute solids throughout the space
Materials Handling- Mixing/ Conveying
Complete, uniform mixing/ turning No ‘dead’ spots in corners Uniform turning of entire bed
Materials Handling- Discharging
Automated discharge, continuous flow Discharge at either end of greenhouse Discharge into bunker or screw conveyor
Environmental Concerns
Odor Control
Aeration is key
No Dead Spots
Dry product back-mixed with
incoming feed
Odor Control System not Required
Dust Control
• By utilizing the continuous
process, dryness can be precisely
controlled
Maintenance and Operation
Only one moving device
Slow Turning Equipment
Minimal sensitive components
in process area
Flexible Controls/ Recipes
Maintenance access from
outside the process area
System Summary
Huber Technology, Inc.9735 NorthCross Center, Suite A
Huntersville, NC 28078www.huber-technology.com
Thank you