Abstract:The membrane bioreactor (MBR) process is typically designed and operated to produce a fully nitrified, high quality effluent (permeate) that makes it possible to use free chlorine for disinfection. In California, regulations (Title 22) require a minimum CT value of 450 mg-min/L or 5-log virus inactivation when chlorine is used to produce "disinfected tertiary effluent." In this study, bench-scale experiments were conducted to determine the disinfection requirements for MBR permeate when free chlorine is used. … Show more
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