| 摘要 |
PCT No. PCT/DE97/02716 Sec. 371 Date May 24, 1999 Sec. 102(e) Date May 24, 1999 PCT Filed Nov. 14, 1997 PCT Pub. No. WO98/23541 PCT Pub. Date Jun. 4, 1998The invention relates to a process for cleaning waste water in which, before the anaerobic treatment as a first stage, biomass produced in the second stage, a plant clarifying unit, is added. Thus, an increase in the organic load in the arriving waste water is achieved and thus loading sufficient for the anaerobic methane digestion is achieved. The lightly loaded waste water exiting from the first stage is used in the plant clarifying part (second stage) for irrigation and fertilization. Under the influence of solar energy, this forms plant biomass which is metered in before the first stage. Through the process according to the invention it is possible to use lightly loaded organic waste water for an anaerobic methane digestion for cleaning and simultaneous production of biogas. |
