Treatment Plant Operator Exam Study Guide Answers

What superior disinfection process is created on-site, is done in an enclosed tank, and requires off-gases to be destroyed before release to the atmosphere? The answer to the question is A, ozonation. The ozonation process involves the creation of ozone by feeding oxygen through electrodes (6,000-20,000 volts). This creates ozone and may be used as disinfectant. The gas is highly unstable, but when dosed properly it is very efficient at disinfecting wastewater effluent of bacteria, viruses, protozoa and other microorganisms as well as some CEC’s. As the off-gas is extremely hazardous, it must be destroyed or recycled before any release to the