Answer Happy

(o) Which EPA requirement should be fulfilled to apply biosolids to land without further pathogen regulation? i) Class A requirement ii) Class B requirement ii) 1* biosolids requirement iv) Class 1 requirement (p) Three biological processes of anaerobic digestion are? i) Coagulation, Acidogenesis, Methanogenesis ii) Hydrolysis, Acidogenesis, Disinfection ii) Hydrolysis, Photosynthesis, Disinfection iv) Hydrolysis, Acidogenesis, Methanogenesis 1. Which of the following treatment devices is commonly used to separate and remove large solids form raw wastewater? a. A Mechanically raked bar screen b. A Grease Trap c. A Primary Clarifier 2. Pre-treatment of wastewater would include- a. Coarse or Fine Screening b. Grinding and Grit Removal c. Grease Removal and Pre-aeration d. Adding Chlorine e. a, b, &c 3. Primary treatment of wastewater would include- a. Settling tanks or basins b. Scum collection & removal c. Sludge collection & removal d. Chlorination e. a, b, &c 4. Grit removal would be considered - a. A part of the Pre-treatment b. A part of Secondary Treatment c. Overrated and is not cost effective to perform d. Job duties for the beginning operator 5. Secondary treatment typically used today would include- a. Rotating Biological Contactors (RBC), b. Facultative Lagoons