10.2190/BBH5-HE25-LKJQ-2DU2 BBH5HE25LKJQ2DU2 3 Pilot to Full Scale Ultraviolet Disinfection at the Suffern Wastewater Treatment Plant 25 56 20020509 20020509 20020509 20020509 BBH5HE25LKJQ2DU2.pdf http://baywood.metapress.com/link.asp?target=contribution&id=BBH5HE25LKJQ2DU2 1 Raul R. Cardenas Louis A. Ravina Dennis Lindsey Polytechnic Institute of New York, Brooklyn, New York Thomas Riddick Associates, P. C., Tappan, New York <p>Field and plant evaluations were carried out using three pilot disinfection units to determine the ultraviolet (UV) dosages necessary to meet permit requirements for fecal coliform reductions at the newly expanded Suffern Wastewater Treatment Plant. UV dosages were determined experimentally using bioassay procedures. The experiments permitted evaluation of the effects of flow, UV transmission of the water, lamp spacing, reduced lamp output, and other water quality data. The results of the pilots were used as the basis for defining a target UV dosage of 15,000 μW-sec/cm² and to write the design performance specification for the full scale UV disinfection unit. The UV unit was designed to treat a secondary effluent of 4 MGD at 50 percent Transmittance and 70 percent lamp output. The newly expanded plant is a trickling filter-activated sludge plant and produces relatively high quality effluent. The UV disinfection unit was installed and became operational in June 1984.</p><p>Operating data for the Plant indicate that the UV disinfection units have functioned well and have easily met the required Fecal Coliform discharge levels. Cleaning and other features are discussed. The cost of UV disinfection at the Suffern Facility, at present, is 4 cents/1000 gallons. The reasons for selecting UV are considered. A review of the history and theory of UV and the use of bioassays to determine dosage is presented.</p> A. Venosa, personal communication, United States Environmental Protection Agency, Wastewater Research Division, Municipal Environmental Research Laboratory, 1984. W. F. Walker and R. W. Pryeer, Bacterial Action of Water Treated by Ultraviolet Rays, <i>American Journal of Public Health 7</i>, pp. 703-706, 1921. Anonymous, Sterilization of Polluted Water by UV Rays at Marsielles, France, <i>Eng. News 64</i>, p. 633, 1910. Chlorine Objective Task Force, <i>Alternatives for Managing Chlorine Residuals: A Social and Economic Assessment</i>, International Joint Commission, Ontario, 1980. R. I. Jolleu et al. <i>Water Chlorination: Environmental Impact and Health Effects</i>, Vol. 2, 1978. R. I. Jolleu et al., <i>Water Chlorination: Environmental Impact and Health Effects</i>, Vol. 3, 1979. United States Environmental Protection Agency, <i>Progress in Wastewater Disinfection Technology</i>, Proc. of the National Symposium, 1978, A. Venosa, (ed.), EPA 600/9-79-018, 1979. United States Environmental Protection Agency, <i>Municipal Wastewater Disinfection</i>, Proc. of Second National Symposium, A. D. Venosa and E. W. Akins, (eds.), EPA 600/9-83-009, 1983. M. Luckiesh and L. L. Holladay, Disinfecting Water by Means of Germicidal Lamps, <i>General Electric Review, 47</i>:4, pp. 45-50, 1944. C. B. Huff, H. F. Smith, W. E. Boring, and N. A. Clark, Study of Ultraviolet Disinfection of Water and Factors in Treatment Efficiency, <i>Public Health Reports 80</i>:8, p. 695, 1965. J. A. Roeber and F. M. Hoot, Ultraviolet Disinfection of Activated Sludge Effluent Discharging to Shellfish Waters, <i>Environmental Protection Technology Series</i>, EPA-WPRD, 139-01-68, December 1957. B. G. Oliver and J. H. Carey, Ultraviolet Disinfection of Activated Sludge Effluent Discharging to Shellfish Waters, <i>Journ. Water Poll'n. Contr. Fed., 48</i>:11, p. 26l9, 1976. J. R. Cortelyou, M. A. McWhinnie, M. S. Riddford, and J. E. Semrad, Effects of Ultraviolet Irradiation on Large Populations of Certain Waterborne Bacteria in Motion. I. The Development of Adequate Agitation to Provide an Effective Exposure Period, <i>Applied Microbiol., 2</i>, p. 227, 1954. National Sanitation Foundation, <i>Survey and Evaluation of Currently Available Water Disinfection Technology Suitable for Passenger Cruise Vessel Use</i>, September 1981. C. Sheible, personal communication, 1985. R. Yip and D. E. Konasewich, Ultraviolet Sterilization of Water—Its Potential and Limitations, <i>Water and Pollution Control</i> (Can.) pp. 14-18, June 1972. B. F. Severin, <i>Disinfection of Municipal Wastewater Effluents with Ultraviolet Light</i>, 51st Ann. WPCF Meeting, Session 41, Anaheim, California, 1983. J. D. Johnson and R. Qualls, Ultraviolet Disinfection of a Secondary Effluent: Calculations and Measurement of Dose and Effect of Filtration, USEPA Grant No. R804770010, 1981. R. Nagy, Application and Measurement of Ultraviolet Radiation, <i>American Indust. Hyg. Assoc. J., 25</i>, pp. 274-281, 1964. P. Ellner and S. Ellner, A Biological Method for Measuring the Actual Dosage Delivered by UV Purifiers, unpublished, personal communication, 12 pp.