From: Jennifer Cline
Sent: Fri Aug 14 15:02:16 2015
To: Dan Huff
Cc: Jason Clifford
Subject: Peracetic Acid (PAA)
Importance: Normal
PAA is an alternative to using the typical Chlorine (calcium hypochlorite tablets) and Vitamin C (Ascorbic Acid - removes residual when discharging to Molalla) at the WWTP.
This is worth a running a pilot study
Benefits for Molalla
· Reduction in Chemical Costs
· No requirement to de-chlorinate
· Improves Employee Safety from caustic chlorines
· Reduces handling time for employees to move the chlorine tablets
· Small CIP cost to install Peracetic Acid tanks
· No interference with nitrogen compounds
· Local suppliers are increase supplies of product
Disadvantages
· Minimal use in Oregon, trial with DEQ for permitting
· Small risk of increased effluent organic contact due to the acetic acid and lack of residual
Clackamas Water Environment Services Trial Run Info:
CH2M Hill info on manufacturer, Solvey PAA:
Jennifer Cline, P.E. | Public Works Director
Licensed in OR, WA
117 N Molalla Ave. | PO Box 248 * |Molalla, OR 97038
O: 503.759.0218 | F: 503.829.3676