토양컬럼을 이용한 합성폐수중의 질소 제거

다국어 초록 (Multilingual Abstract)

Nitrogen removal from synthetic wastewater
in soil column


Kim Hai-Yeon
Advisor : Prof. Kyung-Hoon Cheong Ph. D.
Department of Environmental Engineering,
Graduate School of Chosun University


Recently, the sewages produced from small villages rural community, drinking water reservation area and park which doesn't have sewage piping system can be caused a serious water pollution at restricted areas. the objective of research was to suggest an economical and effective sewage treatment method by investigating the removal nitrogen in soil column. the experimental results were obtained as follows.
In the nitrification experiments, Synthetic wastewater containing 250ppm NH4-N treated with soil column packed 6000g of soil. Soil column packed with soil(100%) showed about NH4-N removal of 35.9%. Each soil column packed wih zeolite(10%), zeolite(20%), oyster shell(10%), oyster shell(20%), oyster shell(10%)+zeolite(10%) accelerated nitrification and the highest ammonium degradation rate was observed at soil column packed with oyster shell(20%).
The numbers of nitrifiers increased rapidly when oyster shell(20%) was packed and were approximately constant in a level of about 2.63 × 103cells/g soil(NH4-N cell number), 0.24 × 102 cells/g soil(NO2-N cell number).
In the effects of NH4-N concentration in the influent experiments, NH4-N concentration of early influent 50 mg/L and 100 mg/L were flowed through column packed with oyster shell(20%). Ammonium concentration in the effluents decreased rapidly and nitrification is possible at HRT of 72 hrs and 48 hrs.. NH4-N concentration of influent is 200 mg/L, removal of average effluent NH4-N was 74.8% at HRT of 48 hrs, but removal of NH4-N increased 94.7% after establish aeration device. NH4-N concentration of influent is 400 mg/L at HRT of 72 hrs, removal of NH4-N was 71.2% after establish aeration device.
In the denitrification experiments, Glucose, methanol, humaric acid were added as an electron donor on nitrate reduction. Methanol was a most efficient electron donor and methanol showed denitrification rate of 98.4%. The number of denitrifiers enriched on soil column according to accelerating denitrification.
In the continuous experiment in soil column using glucose, methanol as a carbon source, T-N removal efficiency was 89.6% 93.5% respectively, at HRT of 72 hrs.

목차 (Table of Contents)

• Ⅰ. 서 론 1
• Ⅱ. 이론적 고찰 3
• 1. 토양처리법 3
• 2. 토양처리법의 개요 9
• 3. 처리기구 14
• Ⅲ. 실험방법 18
• 1. 실험재료 18
• 2. 실험장치 19
• 3. 합성폐수 23
• 4. 분석방법 25
• Ⅳ. 결과 및 고찰 27
• 1. 토양 및 첨가제의 이화학적 특징 28
• 2. 제올라이트를 이용한 이온교환 실험 29
• 3. 토양컬럼을 이용한 질산화 31
• 4. 토양컬럼을 이용한 탈질화 44
• 5. 토양컬럼을 이용한 질소 제거 56
• Ⅴ. 결 론 60
• 참고문헌 61