| 摘要 |
<p>PCT No. PCT/DK96/00205 Sec. 371 Date May 9, 1997 Sec. 102(e) Date May 9, 1997 PCT Filed May 2, 1996 PCT Pub. No. WO96/35644 PCT Pub. Date Nov. 14, 1996A novel method for control of biodegradation is disclosed, said biodegradation being performed by mixed cultures of microorganisms. Measurements and adjustment (preferably on-line) of process parameters which relate to metabolic activity of the microorganisms are performed in such a manner that simultaneous nitrification and denitrification is effected in the same environment while keeping the oxygenconcentration below 1 ppm. The method allows the use of high biomass concentrations (up to 20 kg/m3) and reduces energy consumption and process volume of e.g. activated sludge processes, thereby saving costs for waste water purification. Generally, the process ensures optimized conditions for microorganisms in the process. Also disclosed is a method for waste water purification and a waste water purification plant which both employ the method for control of biodegradation. Finally, a method for determining set-point values allowing the control is also disclosed.</p> |
