Question

ENVIRONMENTAL ENGINEERING, please show all work and clearly circle your answer.

A settling tank is being designed to remove suspended particles through Type 1 settling. The density of the particle is 1045 kg/m23 and the density of the water is 1020 kg/m2. The diameter of the particles is 0.2 mm and the temperature is 25* C. Assuming laminar conditions, find the settling velocity, vi, for the particles. If the overflow rate is 65 m2/d m2, what is the percentage of particles that will be removed? 1. A new proposed treatment plant has a design flow of 1 m3/s. The filtration basin will be dual-media with a standard loading rate. There will be 5 basins including 2 redundancies for maintenance and backwashing. If the length to width ratio is set to 4:1, what will be the final design for the filtration process (Area and dimensions)? 2.

Answer 1

as hcles Demsv em s loys lo 20 N ow arhcles between o1 m m Gm e Usina HaRen's equahion 41 (1.02232+7 Lo D Vs 51.322 m/day Ars tus herre Vs And, efficieny 51.322 65 loo : . T 8.96% of pa kc, les alu be removed