A municipal wastewater flow of 1,000 m³/d contains 400 mg/L BOD5 and is treated to be in a trickling filter. The filter will use a plastic filter medium with a specific surface area of 200 m³/m² and will operate with a recirculation ratio of 100% and a hydraulic loading of 25 m³/m² -d. Taking both surface loading and volumetric loading criteria into consideration, what volume (m³) of plastic media should be installed?

A municipal wastewater flow of 1,000 m³/d contains 400 mg/L BOD5 and is treated to be in a trickling filter. The filter will use a plastic filter medium with a specific surface area of 200 m³/m² and will operate with a recirculation ratio of 100% and a hydraulic loading of 25 m³/m² -d. Taking both surface loading and volumetric loading criteria into consideration, what volume (m³) of plastic media should be installed?

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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Question

Hello

Would you please solve this question.

I got the results but it is incorrect

466.8 m^3, 20,000 m^3, 64,000 m^3 all are incorrect.

A municipal wastewater flow of 1,000 m³/d contains 400 mg/L BOD5 and is treated to
be in a trickling filter. The filter will use a plastic filter medium with a specific surface
area of 200 m³/m² and will operate with a recirculation ratio of 100% and a hydraulic
loading of 25 m³/m² -d. Taking both surface loading and volumetric loading criteria into
consideration, what volume (m³) of plastic media should be installed?

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Step 1: Calculate the BOD5 load (kg/d).

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Step 2: Calculate the required filter media surface area (m²)

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Step 3: Calculating the required filter media volume (m³)

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