No abstract

This paper presents actions taken by the Orange County Sanitation District (OCSD) to continually optimize its odor control program based upon liquid-phase dissolved sulfide concentration, vapor phase hydrogen sulfide, vapor-phase odor and volatile organic compound generation, and cost. Methods used to control costs include bulk chemical quality assurance and quality control, market evaluations, flexible contracting techniques, price indexing, on-going product comparison, and testing of new chemicals or chemical combinations. This paper will present both the administrative measures and results of full-scale field tests.