| 摘要 |
<p>Water to be analysed is fed to reaction zone, and nutrient medium added, opt. simultaneously O2 is fed to reactor in controlled quantities, pref at constant pressure, as biological oxidation proceeds, and gas evolved from liquid drawn off, contg. unconsumed O2 and CO2 produced. The gas stream is passed to the CO2 absorbent system and recycled to reactor. The quantity of O2 used is measured by water gauge system etc. The movement of levels being proportional to O2 used and CO2 removed. Small samples of reaction medium are drawn off at predetermined intervals to allow analysis of compsn. Used for kinetic determination of BOD or COD of waste water, opt. forming pilot plant to enable design of industrial scale units. Automatic monitoring of Ph and O2 content of liquid etc. may be used.</p> |
