73. To recap
Aeration serves a variety of purposes
The obvious ones have been known for quite some time
The biological treatment uses are only about a century old
Mechanical aeration faces serious limitations
Coarse bubbles can get some work done
Broad agreement surrounds the advantages of small bubbles
75. Thank you for your attention!
Contact us anytime with
questions
Brian Gongol
DJ Gongol & Associates
515-223-4144
info@djgongol.com
76. References
Valuable historical details obtained from "Reflections on
Seven Decades of AS History" by James E. Alleman and TBS
Prakasam, Journal of the Water Pollution Control Federation
(1985)
Supplemental historical details from "History of Activated
Sludge", Conference of the International Water Association
(2014)
Some illustrations courtesy of the respective manufacturers
(RWL Water and SSI Aeration)
All other photos are original work by and copyright reserved
to Brian Gongol