Daniel Company
About
Daniel Company, operating from Upland, California, is a specialty manufacturer and engineering firm focused on fiberglass-reinforced plastic (FRP) odor control systems for the water and wastewater industry. The company positions itself as the premier US manufacturer of biotrickling filter systems — biological odor treatment units that use microbial cultures on structured media to oxidize hydrogen sulfide and other malodorous compounds without chemical consumables. Daniel Company delivers complete odor control packages ranging from compact skid-mounted temporary scrubbers for pilot testing to full-scale permanent installations at treatment plants. Their fabrication scope encompasses FRP vessels and scrubbers, FRP ductwork and piping, and electrical control panels — all produced in-house using 3D design software to translate conceptual criteria into engineered shop drawings before fabrication. The company follows a four-phase project delivery model — proposal, engineering design, production, and continued support — ensuring that each system is tailored to site-specific air flow and contaminant loading conditions. Daniel Company maintains memberships in CWEA, WEF, AWWA, NYWEA, and WEAT, and holds certifications through NSF and AMPP for corrosion protection. Their FRP fabrication capabilities also extend to composite vessels serving industrial air pollution control and process scrubbing applications beyond municipal wastewater.
Key Products
Service Area
Western US
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