FE Exam - Environmental 2023 with 100% correct answers

(sample)? standard deviation in your calculator correct answersSx (Sx^2 is variance) relationship between exposure and distance correct answersE inversely proportional to 1/d^2 primary treatment stage of wastewater correct answersSedimentation stage, solids/sludge settle and are removed at the bottom while oils rise and are skimmed off. Secondary treatment of wastewater correct answersDegrades biological components, usually via aerobic biological processes. Fixed film and suspended growth are two processes. Primary or secondary treatment examples?: Activated sludge Aerated lagoon Aerobic granulation Constructed wetland Membrane bioreactor Rotating biological contactor Sequencing batch reactor Trickling filter correct answerssecondary For terminal velocity of a particle in a fluid, use... correct answersStoke's or Settling equations why is turbidity measured correct answersTo determine if it requires better filtration operation coupled with coagulation. Finer particles that cause turbidity must be coagulated into larger particles that can then be settled and filtered.