| 摘要 |
<p>The biological treatment is carried out in several stages to break down the organic carbon compounds and oxidise the nitrogen compounds. The organic carbon compounds are broken down in a first stage, then an intermediate clarification is carried out, and a filtration is provided upstream of the nitrogen-oxidising stage which is designed as disc aerator. The intermediate clarification can be dispensed with in certain cases. The essential advantage is that considerably higher nitrification efficiencies are achieved compared with known processes, and thus smaller, but more efficient, disc aerator systems can be used. <IMAGE></p> |
