| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rational waste water treatment technique which is capable of adequately regulating the flow rate of the waste water moving between treating vessels. SOLUTION: A partition wall 5 between a second anaerobic filter bed chamber 20 and carrier fluidization filter chamber 30 of the waste water treating vessel 1 for treating the domestic waste water is provided with a partition opening 5a communicating both chambers with each other. The partition opening 5a is attachably and detachably provided with an attaching and detaching piece 100 constituted attachably and detachably to and form this opening. The attaching and detaching piece 100 is mounted on the partition wall 5 side by hooking the same to the inner periphery of the partition opening 5a and the partition opening 5a is partly shielded by the attaching and detaching piece 100. As a result, the opening area communicating the second anaerobic filter bed chamber 20 and the carrier fluidization filter chamber 30 with each other is changed over A1 to A2 (<A1), by which the substantially opening area may be made smaller than before mounting of the attaching and detaching piece 100.</p> |
