Define what is the bod20 and the ultimate bod

Reference no: EM13660499

If two separate 100 mL samples of waste water were collected. The first was aerated also seeded with bacteria. It was then fixed utilizing the Winkler method and titrated using a 0.0125 M sodium thiosulfate solution to a starch-iodide endpoint after addition of 7.18 mL of the sodium thiosulfate solution. The second sample was sealed as well as stored in a dark 40°C cabinet for 20 days. After 20 days, the sample was fixed utilizing the Winkler method and titrated using a 0.0125 M sodium thiosulfate solution to a starch-iodide endpoint after addition of 6.26 mL of the sodium thiosulfate solution.

Define what is the BOD20 and the ultimate BOD? What should the BOD5 have been?

Reference no: EM13660499

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