오존 및 알칼리 전처리를 이용한 하수슬러지 감량화공정에서 부산물의 비료 가능성 평가 |
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학술지명 한국환경기술학회
저자 문용택,김지연,김연권,김홍석,김병군
발표일 2009-12-30
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In order to perform the feasibility test on by-products of ozone and alkali pre-treatment like struvite and apatite as fertilizer, optimum dose of Mg2+ and Ca2+ for producing struvite and apatite and physicochemical characteristics with heavy metal concentration were performed. At mole ratio of 2.4 (Mg2+:NH4+) for struvite which was optimum mole ratio, NH4+-N and PO43--P removal efficiency were 63.0%, 67.3% respectively. At mole ratio of 2.4 (Ca2+:PO43-) for apatite which was optimum mole ratio, removal efficiency of PO43--P was 78 %. By applying these optimum mole ratios, feasibility test for the use of struvite and apatite as fertilizer was performed. At physicochemical characteristics of struvite and apatite, the struvtie and apatite of KSMBR(D city), D city and J county did not meet the organic content of standard on the ministry of environment and the ministry of agriculture and forestry. However struvite and apatite of KSMBR(D city), D city and J county could be applied to road-cut as fertilizer. In case of heavy metal, all cases were meet the heavy metal standard of the ministry of environment and the ministry of agriculture and forestry. |