A sewage treatment plant is designed to treat wastewater from a population of 20,000 PE. A treatment plant operates with two rectangular primary clarifiers arranged in series. The HRT of the primary treatment stage is 2.3 hours, and each clarifier has a 3.5m side-water depth. a) Determine the area of each clarifier, given that width:length ratio is 1:2 b) Determine the surface overflow rate (in m³/m².d) of the clarifier at peak flow.

A sewage treatment plant is designed to treat wastewater from a population of 20,000 PE. A treatment plant operates with two rectangular primary clarifiers arranged in series. The HRT of the primary treatment stage is 2.3 hours, and each clarifier has a 3.5m side-water depth. a) Determine the area of each clarifier, given that width:length ratio is 1:2 b) Determine the surface overflow rate (in m³/m².d) of the clarifier at peak flow.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Q#2 a) A treatment unit is 7.0m wide, 25m long and has a depth of 3.5m. If the wastewater flow rate through the tank is (18300) gallons per day. Calculate: 1. Hydraulic detention time 2. Surface loading rate
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