The Wastewater Treatment B Test Questions And Answers All Verified

The Wastewater Treatment B Test Questions And Answers All Verified Liftstations at a treatment plant or those which discharge directly to a treatment plant with an average flow greater than 0.1 MGD shall have three or more pumps or have automatically controlled variable capacity pumps, these pumps should be adjusted to actual flow conditions and controlled to operate so as to: - ANS Minimize surges in the treatment in the treatment units. In the contact stabilization system of activated sludge treatment, the detention time in the contact zone is designed be _______ other types of activated sludge treatment. - ANS shorter than According to current TCEQ wastewater operator certification rules, an operator can renew a Class D Wastewater Treatment Plant Operator if he or she: A) Works only in a collection system B) Is an operator at an activated sludge plant C) Is an operator at a trickling filter treatment facility with a permitted daily average flow of 0.15 MGD. D) Both A and C. E) None of the Above - ANS None of the Above If a Leak is suspected in an off-line, back-up, one-ton chlorine cylinder, after putting on proper safety equipment, the operator should first: - ANS Call appropriate emergency response personnel. The definition of an oxygen-deficient atmosphere is one that contains less than ________ percent oxygen. - ANS 19.5 A combustible atmosphere: - ANS contains oxygen and flammable gas, vapor, or dust All of the following EXCEPT ________ are damaging or irritating to the mucus membranes or lungs if inhaled: A) Ozone B) Lime Dust C) Chlorine Gas D) Carbon Dioxide E) Ferric Chloride Dust - ANS Ozone The Sludge Volume Index (SVI) is: - ANS the volume of settled sludge (30-minutes) in ml/L times 1000, divided by the concentration in mg/L of MLSS.