Evaluation of Chlorine Dioxide Generated In-Situ for Disinfection of Waterborne Micro-Organisms

Tests were conducted with chlorine dioxide (Cl02) field burst packets to determine their capability to produce chlorine dioxide from precursors and to determine if the disinfectant is appropriate for military field applications. Chlorine dioxide produced from citric acid and sodium chlorite was eval...

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Bibliographic Details
Main Authors: Schaub, Stephen A, Hargett, Helen T, Kamrud, Kurt I, Sterling, Charles R, Marshall, Marilyn M
Format: Report
Language:English
Subjects:
ANIMALS
BACTERIA
BURST PACKETS
CHLORINE
CHLORITES
CITRIC ACID
CRYPTOSPORIDIUM PARVUM
DIOXIDES
DISINFECTION
ECHOVIRUS 7
HUMIC ACIDS
Hygiene and Sanitation
Inorganic Chemistry
INORGANIC SALTS
KLEBSIELLA
Microbiology
MICROORGANISMS
MILITARY APPLICATIONS
OOCYSTS
PACKETS
PH FACTOR
PRECURSORS
SODIUM
SUPPLIES
TAPS
TERRIGENA
TEST AND EVALUATION
TURBIDITY
WATER
Water Pollution and Control
WATER SUPPLIES
WATERBORNE
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Summary:Tests were conducted with chlorine dioxide (Cl02) field burst packets to determine their capability to produce chlorine dioxide from precursors and to determine if the disinfectant is appropriate for military field applications. Chlorine dioxide produced from citric acid and sodium chlorite was evaluated on Klebsiella terrigena, echovirus 7 and Cryptosporidium parvum oocysts. Waters used to challenge disinfection were distilled deionized, tap and worst case (containing humic acids, inorganic salts, high turbidity and high pH). Animal (neonatal mouse) infectivity tests were conducted at the University of Arizona with C. parvum oocysts after exposure to chlorine dioxide. Results indicate that the chlorine dioxide packets are effective for disinfection of bacterial and virus challenges with less than 10 minutes contact, but are ineffective for C. parvum oocysts with 30 minutes contact. Chlorine dioxide, Disinfection, Water supply, Klebsiella, Echovirus, Cryptosporidium.