please answer question 1 quickly please (I have just over 12 hours)

Biological Water and Wastewater Treatment Design Due: March 29, 2022 1. You are hired to design a wastewater treatment system using cross-flow plastic trickling filters. The design wastewater flow rate is 20,000 m/d and is equalized with peaking factor of 1.4. The effluent BODs after the treatment of trickling filters must be less than 25 mg/L. Basic Design Data: Raw wastewater characteristics BODS 180 mg/L SS 150 mg/L TKN 30 mg-N/L 4 mg P/L pH 6.4 - 8.0 Temp 12 C Ambient air Temp 20 C Trickling Pilot Testing Results K 20c = 0.2 (L/s)05/m Net sludge yield coefficient = 0.40g VSS/g BOD removal Temperature correction factor 0 = 1.035 Minimum trickling filter hydraulic loading rate = 1.8 m/ m/h (0.5 L/m /s) You are required to determine: Number of filters (at least 2) Depth and area of packing media Type of wastewater distributors and the rates of wastewater operating and flush dosing Recirculation ratio Air supply if necessary and the airflow pressure drop across the media packing Settling tanks >> >> >> >> >> >> 2. Preparing a spreadsheet program, plot a graph of the final effluent BODs of above designed trickling filters as a function of the influent flow rate varying + 30%