| 摘要 |
<p>Sewage is purified in a continuous cycle through several treatment stages in which the cycle is regulated by a process control device and monitored by sensors. The treatment takes place in physical preparation stages (8, 12), pre-flotation stages (30, 38), two-step biological clarifying stages (44, 54) and a post-flotation stage (60, 64). There are gas-water mixers (32, 48, 62) in the pre-flottation and biological clarifying stages and solid foam separators with outlet channels (40, 52, 68) in the pre-flotation, biological clarifying and post-flotation stages. Clean water from the clean water discharge tank (34) is supplied via the gas-water mixers (32, 48, 62) and a clean water return line (82) to the individual stages. The process is also suitable for use in a compact, transportable device.</p> |
