中国环境科学
中國環境科學
중국배경과학
CHINA ENVIRONMENTAL SCIENCE
2014年
1期
91-96
,共6页
李娜%李小明%杨麒%柳娴%伍秀琼
李娜%李小明%楊麒%柳嫻%伍秀瓊
리나%리소명%양기%류한%오수경
垃圾渗滤液%微波%活性炭%过硫酸盐氧化
垃圾滲濾液%微波%活性炭%過硫痠鹽氧化
랄급삼려액%미파%활성탄%과류산염양화
landfill leachate%microwave%activated carbon%persulfate oxidation
采用微波(MW)-活性炭(AC)强化过硫酸盐(PS)氧化处理垃圾渗滤液,研究不同因素对垃圾渗滤液处理的影响,比较不同组合工艺对渗滤液处理的效果及活性炭的多次使用情况.结果表明,COD和氨氮(NH4+-N)的去除率随着AC用量、PS用量(S2O82-:12COD0)、MW功率和辐射时间的增加而增大,pH值对COD的去除影响不明显, NH4+-N在碱性条件下得到更理想的去除效果;在活性炭用量为10g/L,PS用量为S2O82-:12COD0=1.2,pH=9,MW 功率和辐射时间分别为500W 和10min 时,垃圾渗滤液中的 COD 和 NH4+-N 去除率分别为78.2%和67.2%,BOD5/COD由0.17增至0.38;不同工艺对垃圾渗滤液处理效果显示,MW-AC-PS工艺对垃圾渗滤液中COD和氨氮去除率明显高于其他处理,且MW、AC和PS之间存在协同效应,MW热效应显著;活性炭四次实验后,COD和NH4+-N的去除率分别为61.2%和46.1%.
採用微波(MW)-活性炭(AC)彊化過硫痠鹽(PS)氧化處理垃圾滲濾液,研究不同因素對垃圾滲濾液處理的影響,比較不同組閤工藝對滲濾液處理的效果及活性炭的多次使用情況.結果錶明,COD和氨氮(NH4+-N)的去除率隨著AC用量、PS用量(S2O82-:12COD0)、MW功率和輻射時間的增加而增大,pH值對COD的去除影響不明顯, NH4+-N在堿性條件下得到更理想的去除效果;在活性炭用量為10g/L,PS用量為S2O82-:12COD0=1.2,pH=9,MW 功率和輻射時間分彆為500W 和10min 時,垃圾滲濾液中的 COD 和 NH4+-N 去除率分彆為78.2%和67.2%,BOD5/COD由0.17增至0.38;不同工藝對垃圾滲濾液處理效果顯示,MW-AC-PS工藝對垃圾滲濾液中COD和氨氮去除率明顯高于其他處理,且MW、AC和PS之間存在協同效應,MW熱效應顯著;活性炭四次實驗後,COD和NH4+-N的去除率分彆為61.2%和46.1%.
채용미파(MW)-활성탄(AC)강화과류산염(PS)양화처리랄급삼려액,연구불동인소대랄급삼려액처리적영향,비교불동조합공예대삼려액처리적효과급활성탄적다차사용정황.결과표명,COD화안담(NH4+-N)적거제솔수착AC용량、PS용량(S2O82-:12COD0)、MW공솔화복사시간적증가이증대,pH치대COD적거제영향불명현, NH4+-N재감성조건하득도경이상적거제효과;재활성탄용량위10g/L,PS용량위S2O82-:12COD0=1.2,pH=9,MW 공솔화복사시간분별위500W 화10min 시,랄급삼려액중적 COD 화 NH4+-N 거제솔분별위78.2%화67.2%,BOD5/COD유0.17증지0.38;불동공예대랄급삼려액처리효과현시,MW-AC-PS공예대랄급삼려액중COD화안담거제솔명현고우기타처리,차MW、AC화PS지간존재협동효응,MW열효응현저;활성탄사차실험후,COD화NH4+-N적거제솔분별위61.2%화46.1%.
Microwave-enhanced persulfate (PS) oxidation using activated carbon (AC) as catalyst was originally applied to disposal landfill leachate. The comparison of different process was studied and so as to the effects of pH、dosage of AC、PS dosage、microwave power and radiation time. The obtained results showed that the rates of COD and NH4+-N removal increased with the increase of AC dosage、PS dosage(S2O82-:12COD0)、microwave (MW) power and radiation time. The effect of pH value on COD removal was unconspicuous while NH4+-N removal got better efficiency under alkaline condition. The optimal condition was that:AC dosage=10g/L, S2O82-:12COD0=1.2, pH=9, microwave power=500W and radiation time=10min. Under the optimal condition, the rates of COD and NH4+-N removal were 78.2%and 67.2% respectively, and the biodegradability (BOD5/COD) of the landfill leachate increased to 0.38. The results of comparison experiments showed that the rates of COD and NH4+-N removal in the process of MW-AC-PS were remarkable higher than the other treatments. There might be certain cooperation actions in MW-AC-PS system during the degradation of COD and NH4+-N and thermal effects of MW played a key role. When AC was used for the fourth time, the efficiencies of COD and NH4+-N removal were 61.2%and 46.1%respectively.