The purpose of this research was to determine the feasibility of a UV photoreactor for the disinfection of effluent from a polishing pond following a UASB reactor treating domestic wastewater. For this, a 20 mm diameter photoreactor (20.7 litre volume) equipped with four 30 W submerged low-pressure mercury arc lamps was used. Three tests with contact times and doses ranging from 45 to 90 s and from 16.9 to 31.3 mW s cm−2 were carried out. Inactivation of total coliforms and Escherichia coli varied from 2.6 to 3.4 log-units, even with the presence of suspended solids in the range of 87 to 102 mg L−1. These results have shown that UV radiation disinfection of pond effluents can be a feasible alternative in areas with land restriction.
UV disinfection of stabilization pond effluent: a feasible alternative for areas with land restriction
C. V. P. Alves, C. A. L. Chernicharo, M. von Sperling; UV disinfection of stabilization pond effluent: a feasible alternative for areas with land restriction. Water Sci Technol 1 January 2012; 65 (2): 247–253. doi: https://doi.org/10.2166/wst.2012.363
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