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Question Please Please Please Clear hand writing Image transcription text1) A 20-m diameter plastic packing trickling filter, containing cross-flow packing at a 6.1-m depth with specificarea of 100 m-/m’, received domestic wastewater after primary treatment. The average flowrate is 490 m /hand the BOD concentration is 150 mg/L. Determine and compare the effluent BOD concentration … Show more… Show morePlease Please Please Clear hand writing  Engineering & Technology Civil Engineering CVL 601 Share QuestionEmailCopy link Comments (0)