New development of the anaerobic processand the deninification process by combination with the activated carbon.

活性炭与厌氧处理或反硝化相结合有望创造新的工艺操作模式，提高工艺稳定性。在这些点进行了实验，得到了以下结果：厌氧处理：采用活性炭填料厌氧流化床反应器处理含酚废水。即使进水苯酚突然波动，也能在不变质的情况下获得高稳定的苯酚制甲烷转化率。而填充无烟煤的流化床反应器稳定性较差，出水水质较差。实验结果表明，活性污泥的吸附和解吸作用是提高工艺稳定性的重要因素。为提高整体反应速率，提供了有意的进水波动。结果表明，在解吸阶段反应速率较高。利用同位素C-13阐明了生物活性炭过程中底物降解的机理。结果表明，生物膜对吸附的苯酚的降解是通过活性炭内部的苯酚直接转移到生物膜中，而不是通过散装水的运输。这说明生物膜在此过程中可以从两个方向获得底物，即散装水侧和活性炭侧。反硝化工艺：采用活性炭柱对无碳源的含硝酸盐水进行间歇供应碳源的反硝化试验。活性炭在投料阶段成功地保持了有机碳，在不投料有机源时逐渐释放反硝化。通过每天一次的有机饲养，可以获得相当高的反硝化率。在大多数情况下，利用吸附的底物进行反硝化。这种操作方式可以。

Combination of activated carbon with anaerobic treatment or denitrification is expected to create new mode of process operation and improve the process stability. The experiments were conductedon these poinst and the following results were obtained.1.Anaerobic Treatment : Wastewater containing phenol was treated with an anaerobic fluidized bed reactor packed with activated carbon. High and stable conversion of phenol to methane was obtained without deteriorating the effluent even when influent phenol was suddenly fluctuated. On the other hand, fluidized bed reactor packed with anthracite failed to show such high stability with leaving poor effluent quality. These results obviously showed that adsorption and desorption by the activatedsludge contributed much to the high process stability against influent fluctuation. Intentional influent fluctuation was provided to improve the overall reaction rate. The results indicate that the reaction rate was high during the desorption stage. Isotope C-13 was used to clarify the mechanisms of substrate degradation in this biological activated carbon process. The results showed that the adsorbed phenol was degraded by biofilm through direct transfer of phenol from the inside of activated carbon to the biofilm rather than transportation thorough bulk water. This suggests that the biofilm can obtain substrate from both sides, namely bulk water side and activated carbon side in this process.2. Denitrification Process : Intermittent supply of carbon source in denitrification of water containing nitrate without carbon source was attempted with using activated carbon column. The activated carbon successfully held organic carbon during feeding stage and gradually releasedit for denitrification during no feeding of organic source. Reasonably high percentage or denitrification was achieved with organic feeding of only once a day. Denitrification took place by using the adsorbed substrate in most of the time. This mode of operation can.