Disinfection of low quality wastewaters by ultraviolet irradiation

Journal Article · Fri Feb 28 23:00:00 EST 1986 · J. - Water Pollut. Control Fed.; (United States)

OSTI ID:7061997

Zukovs, G; Kollar, J; Monteith, H D; Ho, K W.A.; Ross, S A

Pilot-scale disinfection of simulated combined sewer overflow (CSO) by ultraviolet light (UV) and by high-rate chlorination were compared. Disinfection efficiency was evaluated over a range of dosages and contact times for fecal coliforms, enterococci, P. Aeruginosa, and Salmonella spp. Fecal coliform were reduced 3.0 to 3.2 logs at a UV dose of approximately 350,000..mu.. W s/cm/sup 2/. High-rate chlorination, at a contact time of 2.0 minutes and total residual chlorine concentration of approximately 25 mg/L (as Cl/sub 2/), reduced fecal coliforms by 4.0 logs. Pathogens were reduced to detection limits by both processes. Neither photoreactivation nor regrowth occurred int he disinfected effluents. The estimated capital costs of CSO disinfection by UV irradiation were consistently higher than for chlorination/dechlorination; operation and maintenance costs were similar. 19 references.

• OSTI ID: 7061997
• Journal Information: J. - Water Pollut. Control Fed.; (United States), Journal Name: J. - Water Pollut. Control Fed.; (United States) Vol. 58:3; ISSN JWPFA
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
BIOLOGICAL RECOVERY
BIOLOGICAL REPAIR
CHEMICAL REACTIONS
CHLORINATION
ELECTROMAGNETIC RADIATION
GERMICIDES
HALOGENATION
INJURIES
IRRADIATION
MICROORGANISMS
PHOTOREACTIVATION
PSEUDOMONAS
RADIATIONS
RADIOSTERILIZATION
RECOVERY
REPAIR
SALMONELLA
SEWAGE
STERILIZATION
ULTRAVIOLET RADIATION
WASTES