and dewatering systemOctober 25 2016Dave HazlebeckBill RickmanThe views expressed are those of the authors and do not reflect the official policy or position of the Department of Defense or the Depart ID: 859118
Download Pdf The PPT/PDF document "New low energy algal harvesting" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
1 New low energy algal harvesting and dew
New low energy algal harvesting and dewatering system October 25, 2016 Dave Hazlebeck Bill Rickman The views expressed are those of the author(s) and do not reflect the official policy or position of the Department of Defense or the Department of Energy or t
2 he U.S. Government. Global Algae Innovat
he U.S. Government. Global Algae Innovations Changing the World Algae Solutions to Global Dilemmas Harvesting and dewatering 1. Options and why we selected the Zobi ™ harvester 2. Zobi ™ harvester large - scale results 3. Summary – complete solution to alga
3 e harvesting Industry Survey Technology
e harvesting Industry Survey Technology Feed rate (m 3 / hr ) % of nameplate Harvest efficiency Outlet Solids Conc. Energy use (kWh/m 3 ) Capital Cost ($k/m 3 / hr ) Flocculent Crossflow filter 4 - 5 40% 95 - 100% 1% 4 - 7 80 - 130 Spiral plate separator 0
4 .2 - 2 30 - 50% 30 - 94 % 15 - 25 %
.2 - 2 30 - 50% 30 - 94 % 15 - 25 % 3 - 5 100 - 200 Disc - stack centrifuge 4 - 9 25 - 40% 80 - 94% 15 - 25 % 3 - 5 30 - 50 Decanter centrifuge 0.1 - 4 NR NR 14 - 25 % NR NR cat. polymer Dissolved air floatation 45 - 800 40 - 70% 0 - 94 % 1 - 2 %
5 1 - 1.5 4 - 10 cat. polymer Electrocoa
1 - 1.5 4 - 10 cat. polymer Electrocoagulation 15 - 20 Design 95% 6% 0.7 15 - 20 Crossflow filter 0.5 - 1 NR 100% 1 - 2 % NR 40 - 80 Crossflow filter 8 - 15 Design 100% 1 - 2 % 0.5 15 - 25 Zobi Harvester™ 4 - 6 150% 100% 15 - 20 % 0.03 - 0.06 40 - 60 Z
6 obi Harvester™ 20 NR 100% 15 - 20 % 0
obi Harvester™ 20 NR 100% 15 - 20 % 0.05 10 - 15 Zobi Harvester™ 200 - 1600 Design 100% 15 - 20 % 0.05 4 - 8 Why Zobi ™ Harvester? Options Tested by Global Algae Innovations High efficiency Low Energy Low Cost No Flocculent Universal High Conc. Scalable C
7 entrifuge NO NO NO YES YES YES NO DAF NO
entrifuge NO NO NO YES YES YES NO DAF NO NO YES NO NO NO YES Clarifier NO YES YES NO NO NO YES Wicking belt NO YES NO NO NO YES NO Belt press NO YES YES NO NO YES YES Cross - flow filtration YES NO NO YES YES NO NO VSEP Membrane YES NO NO YES YES YES NO Other novel
8 membrane YES YES NO YES YES YES NO Zobi
membrane YES YES NO YES YES YES NO Zobi Harvester ™ YES YES YES YES YES YES YES Zobi ™ harvester results 100% harvest efficiency Permeate Feed Retentate Crystal Clear Permeate • Less than 0.1 NTU • No algae, bacteria or predators 4 - 6 m 3 / hr system Zobi
9 ™ harvester results 15 - 20% algal slu
™ harvester results 15 - 20% algal slurry Eliminates need for secondary dewatering Zobi ™ harvester results very low energy use Zobi ™ harvester results universally applicable to microalgae • Many green algae • Many diatoms • Five cyanobacteria • One
10 red algae No flocculent 20 m 3 / hr sy
red algae No flocculent 20 m 3 / hr system Zobi ™ harvester incorporates GE’s scalable membrane technology • Over 6 billion gallons per day installed capacity • Plant sizes up to 228 million gallons per day Commercial solution to all key harvesting & d
11 ewatering issues Zobi ™ harvester is
ewatering issues Zobi ™ harvester is available from Global Algae Innovations - Universal, independent of species and media - 100% harvest efficiency - Crystal clear permeate - Produces 15 - 20% algal slurry - Very low energy use - Low capital cost - No flocculent
12 - Scalable for commercial operation ACK
- Scalable for commercial operation ACKNOWLEGEMENT Global Algae Innovations wishes to acknowledge support from the Department of Energy and the Defense Advanced Research Projects Agency (DARPA) as well as technical/contract support from Army Research Office (A