폐수의 감압 암모니아 탈기에 관한 연구

• 영문명: A Study on the Decompressed Ammonia Stripping from Ammonia Contained Wastewater
• 발행기관: 한국환경보건학회
• 저자명: 신대윤 오유경
• 간행물 정보: 『한국환경보건학회지』제27권 제1호, 93~99쪽, 전체 7쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2001.03.30

영문 초록

This study aims at finding out pertinent reaction conditions for treating high concentration ammonia contained in N-chemical factory wastewater with decompressed ammonia stripping method that was designed. And it also tries to investigate adsorption capability of removed ammonia to soil. The results from experiments are as follows ; 1. The removal rate of NH3-N of synthetic wastewater was under 85% at pH 10 with decompressed ammonia stripping method. The reaction time in pressure 360 mmHg at pH 11 and 12 was shorter than in 460 mmHg, and the removal rate of NH3-N with decompressed ammonia stripping method at 90℃ was 11~15% higher than air stripping 2. The optimum conditions for decompressed ammonia stripping with synthetic sample were shown as pH 12, temperature 90 ℃, internal reaction pressure 460 mmHg and reaction time 50 minutes. These conditions were applied to treat the wastewater containing organic-N 290.5mg/ℓ, NH3-N 168.9mg/ℓ, NO2-N 23.2mg/ℓ, NO3-N 252.4mg/ℓ, T-N 735mg/ℓ. Organic-N turned out to be removed 60%, the removal rate of NH3-N IS 94%, T-N is 50%. But NO2-N and NO3-N were increased with 7.8% and 14.9% respectively. 3. The CO Dsr removal rate in decompressed ammonia stripping reaction was 42% and S O42-was removed 8.2%. It was turned out caused with higher pH and thermolysis. 4. In soil adsorption of ammonia desorbed from the decompressed stripping process of wastewater, the recovery rate was 76% in wet soil.

키워드

Decompressed ammonia stripping Ammonia recovery Soil adsorption Ammonia removal