| 摘要 |
<p>PURPOSE:To provide a water treatment device where polluted water in a contam inant load state as in the case of little rivers into which domestic miscellaneous waste water is discharged as it is biologically given high-degree purifying treat ment. CONSTITUTION:There are provided a preliminary treatment tank 6 packed with a filter medium for removing floating solid matter, etc., a denitrification tank 7 which is provided with an aiding material bed packed with aiding materials for bacteria and also which is provided with an adsorbent bed packed with an adsorbent for adsorbing nitrogen in a state of ammonia successively to the aiding material bed, a chitosan charcoal tank 10 packed with charcoal which has been subjected to chitosan treatment, a dephosphrization tank 14 packed with an adsorbent for adsorbing phosphor, and a finish tank 15 packed with charcoal.</p> |
