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For the measurement of the BOD of a wastewater sample from textile industry, five different dilutions (0.5%, 1%, 2%, 5% and 10%) of 1 L are prepared, with the addition of 2 mL of seed. Three different dilutions (0,5%, 2% and 5%) are used for seed corrections. The results of DO measurements are given below. Calculate the BOD5 concentration of the sample.

For the measurement of the BOD of a wastewater sample from textile industry, five different dilutions (0.5%, 1%, 2%, 5% and 10%) of 1 L are prepared, with the addition of 2 mL of seed. Three different dilutions (0,5%, 2% and 5%) are used for seed corrections. The results of DO measurements are given below. Calculate the BOD5 concentration of the sample.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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For the measurement of the BOD of a wastewater sample from textile industry, five different dilutions (0.5%, 1%, 2%, 5% and 10%) of 1 L are prepared, with the addition of

2 mL of seed. Three different dilutions (0,5%, 2% and 5%) are used for seed corrections. The results of DO measurements are given below. Calculate the BOD5 concentration of the sample.

Sample Dilution Ratio (%) DO Day 1 (mg/L) DO Day 5 (mg/L) 0.5 9.08 7.80 1 9.04 7.30 9.10 6.42 5 9.06 3.46 10 White precipitate 9.04 Seed Dilution Ratio (%) DO Day 1 (mg/L) DO Day 5 (mg/L) 0.5 8.88 6.88 8.84 0.82 8.82 White precipitate
Transcribed Image Text:Sample Dilution Ratio (%) DO Day 1 (mg/L) DO Day 5 (mg/L) 0.5 9.08 7.80 1 9.04 7.30 9.10 6.42 5 9.06 3.46 10 White precipitate 9.04 Seed Dilution Ratio (%) DO Day 1 (mg/L) DO Day 5 (mg/L) 0.5 8.88 6.88 8.84 0.82 8.82 White precipitate
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