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Comparison Study of Different BOD Tests in the Determination of BOD7 Evaluated in a Model Domestic Sewage

機(jī)譯：測定中不同BOD測試的比較研究 污水樣板中BOD7的評估

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摘要

The aim of this research was to study the suitability of a manometric respirometric test (OECD 301F) for the determination of biological oxygen demand (BOD) in domestic wastewater. This was done by comparing four different BOD tests (a manometric respirometric test, oxygen sensor determination, iodometric titration, and UV absorption measurement) and by evaluating the BOD7 value after a short-term measurement applying the manometric respirometric test. Measurements were done in three different laboratories. The respirometric test was performed well on municipal sewage, and the precision of results was good. There were minor deviations between BOD7 values as determined by the different methods, but the deviations were not essentially big enough to have a practical impact. Evaluation of the BOD7 value after two or three days' incubation by the respirometric method was shown to work well; average deviations between measured and evaluated values after three days' incubation were 5–18%. Hence, the manometric respirometric test proved to be a rapid and suitable tool for process control purposes.
機(jī)譯：這項(xiàng)研究的目的是研究測壓呼吸試驗(yàn)（OECD 301F）對確定生活污水中生物需氧量（BOD）的適用性。通過比較四個(gè)不同的BOD測試（測壓呼吸測試，氧傳感器測定，碘滴定和紫外線吸收測量），并在應(yīng)用測壓呼吸測試進(jìn)行短期測量后評估BOD7值，從而完成此操作。在三個(gè)不同的實(shí)驗(yàn)室中進(jìn)行了測量。對該市污水進(jìn)行了呼吸測試，結(jié)果精度良好。通過不同方法確定的BOD7值之間存在較小的偏差，但該偏差本質(zhì)上不足以產(chǎn)生實(shí)際影響。呼吸測定法孵育2天或3天后，對BOD7值的評估顯示出良好的效果。孵育三天后，測量值與評估值之間的平均偏差為5–18％。因此，測壓呼吸測試被證明是用于過程控制目的的快速且合適的工具。

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