강윤환 손창호 황경엽 2024-01-12T21:31:11Z 2024-01-12T21:31:11Z 1999-04-15 https://pubs.kist.re.kr/handle/201004/97006 응집과　화학적　산화에　의한　산업폐수의　처리　방법 Patent 1999-04-15 1996-12-24 208477 96-71321 KO 특허 한국과학기술연구원