Wastewater Treatment Operator Certification Test #3 Questions And Answers |Complete Solutions

Wastewater Treatment Operator Certification Test #3 Questions And Answers |Complete Solutions The typical suspended solids removal rate in the primary clarifier is 5 to 10% True or False - answerFalse (v.1 pg 129) Over-greasing a pump motor can lead to damage. True or False - answerTrue (v.2 pg 404) A healthy digester gas consists mostly of hydrogen sulfide. True or False - answerFalse (v.2 pg 158) Coliform results are reported as MPN/100 ml True or False - answerTrue (v.2 pg 556) Increased concentrations of volatile acids and decreased alkalinity are signs that the anaerobic digestion is in an ideal state. True or False - answerFalse (v.2 pg 523) Breakpoint chlorination is the addition of chlorine to wastewater until the chlorine demand has been met. True or False - answerTrue (v.1 pg 351) Zero calibration accuracy for DO probes and meters should be checked with an absolute zero solution (sodium sulfite) True or False - answerTrue Temperature, pH, and dissolved oxygen do not have to be analyzed immediately because they can be preserved. True or False - answerFalse (v.2 pg 499,502) Sterilization is the goal of most wastewater treatment plants True or False - answerFalse (v.1 pg 54) One of the most common types of packaged plants is extended aeration True or False - answerTrue (v.1 pg 257) NPDES permits are issued by the EPA or the state True or False - answerTrue Hypochlorination will raise the pH of wastewater being treated True or False - answerTrue (v.1 pg 351) Denitrification does not cause sludge to rise in a secondary clarifier True or False - answerFalse (v.2 pg 73) The sludge digester can be either aerobic or anaerobic True or False - answerTrue (v.2 pg 148,217 In order to protect your family from infectious disease, you should not wear your work clothes home. True or False - answerTrue (v.2 pg 266) One application of centrifugal pumps is to lift ra