CVG 2132 Study Guide - Plug Flow Reactor Model, Garding
31 Dec 2014
School
Department
Course
Professor
Document Summary
The town of havasplitflo waste water treatment plant has 2 flows entering the plant. 4m3/s and a minor flow qm of 0. 5m3/s. The main flow, q splits at the plant headworks (point a) (see. Figure below) with 30 percent of q going in one direction the other 70 percent the other direction. Tracer studies have shown that the flow from a-e (0. 3q) behaves as a single plug flow reactor (pfr) with a volume of 30,000m3. The other flow (0. 7q) from a-b-c-d-e can be characterized by a pfr (15,000 m3) followed by continuous flow stirred tank reactor (cfstr) (135,000m3) followed by a pfr (10,000m3). The second minor flow, qm enters the treatment plant by flowing into the section behaving as a cfstr (see figure). For steady-state conditions, determine the concentration of reactant (bod) at point e for the following conditions: rbod = -kcbod k = 0. 5 d-1. Cbod = 100 g/m3 (1st order reaction) (minor flow qm) (main flow q)
