I'm studying for my PE in water resources/environmental. I've never been formally educated in wastewater processing (the civil PE is grouped w/environmental). This video was amazing and interesting!
It would have been better to show calculations with unit cancellation. Yes, water weighs 8.34 lb/gal but in the calculations, we ruse the conversion 1 mg/L = 8.34 lb/MG 2 MG/dX 260 X8-34 lb/MG=4336.8=4300 lb/d