Texas Wastewater Class A Exam {2024} with 194 Questions with Complete Solutions

Texas Wastewater Class A Exam {2024} with 194 Questions with Complete Solutions 1. Which activated sludge process does not achieve complete nitrification? - ANSWER Contact stabilization 2. Which form of activated sludge does the better job of handling shock or toxic loads? - ANSWER Complete mix 3. Which of activated sludge has two aeration basins per single treatment unit? - ANSWER Contact stabilization 4. 27. A complete mix activated sludge plant has a fast settling sludge and high amounts of pin floc leaving the clarifier. One method of correcting the problem is to - ANSWER Increase F/M ratio by wasting more 5. problem is Testing of mixed liquor indicates the MLSS is 2500 mg/L and the settling test shows that a 1000 ml sample settles to 400 mls after 30 minutes. What is the SVI? 400 x - ANSWER 160