1.What is a more accurate term for a trickling filter? a) Water Filter b) Second

Question

1.What is a more accurate term for a trickling filter? a) Water Filter b) Secondary Clarifier c) Biological Bed d) Sludge Tower 2. What is the approximate content of BoD and Suspended Solids in an average amount of wastewater contributed per person? (120 gpod a) 200 mgM BOD and 240 mgM SS b) 240 mgM BOD and 200 mgM SS c) 120 mgM BOD and 240 mgM SS d 240 mg M BOD and 120 mgM SS 3. A common quality standard for fecal coliform bacteria is a geometric mean not to exceed a) 100 per 200 ml b) 200 per 100 ml c) 200 per 200 ml d) 100 per 100 ml 4. The flow value is important in sizing aeration and digestion equipment to meet peak demands a) True b) False 5. Sedimentation basins are sized based on what criteria? a) Weir loading rate b) Overflow rate c) Detention time d) All of the above e) None of the above 6. What is the most commonly used device to measure the quantity of wastewater entering a treatment plant? a) Flow meter b) Weir c) Parshall fiume d) Yard stick

Explanation / Answer

1) Trickling filter is a waste water treatment system consist of gravel, rock, coke, slag etc, throgh which the waste water passes and leads to the development of a biofilm which covers the medium through which it passed. Thus, trickling water filter is more accurately called as biological bed.

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