| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wastewater treatment technology which can cope with a wide change of water quality, and can stably continue removal of ammonia nitrogen and organic matter. <P>SOLUTION: When wastewater includes high-concentration organic matter, the organic matter concentration is reduced by methane fermentation, and anammox treatment or activated sludge treatment is performed thereon based on the ratio of COD to ammonia nitrogen. The wastewater is preliminarily diluted, as needed, to reduce Kjeldahl nitrogen, and drainage water after activated sludge treatment is refluxed and used as dilution water. The wastewater after anammox treatment is subjected to activated sludge treatment. <P>COPYRIGHT: (C)2013,JPO&INPIT |
