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Sioux City completes ultraviolet disinfection upgrade at wastewater plant, officials say it removes need for bulk disinfectant chemicals
Summary
Officials told council the wastewater plant's new ultraviolet disinfection system is complete and closed out with the state; the system eliminates the use of sodium hypochlorite and sodium bisulfite and reduces staff exposure to hazardous chemicals.
City staff briefed the council that the wastewater treatment plant's ultraviolet (UV) disinfection system has been completed and accepted by the state, replacing the prior chemical-based disinfection process.
Tom Pingle, utilities and public works director, said the UV system was chosen to reduce ongoing chemical handling and the large chemical costs previously associated with sodium…
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