CAJ | 학술논문

通过柱试验模拟地下水环境，研究了在最适温度条件下，利用混合碳源为介质的生物反应墙与模拟沸石墙串联的组合反应器，考察其对地下水中硝酸盐氮的去除效果，为受硝酸盐污染的地下水提供经济有效的修复方法.结果表明，在30℃条件下，通入硝态氮浓度为65 mg/L的地下水，以锯末和玉米秸秆的混合物作为碳源，沸石作为进一步的修复反应能有效的去除模拟地下水中的硝酸盐.在15 d的运行时间内，模拟装置对水中的硝态氮去除率为90%以上，试验过程中出现亚硝酸盐和氨氮的积累，其中出水中亚硝酸盐氮浓度为0.020～0.120 mg/L，氨氮浓度为0.7～2.5 mg/L，出水pH值介于6.7～7.7之间.
통과주시험모의지하수배경，연구료재최괄온도조건하，이용혼합탄원위개질적생물반응장여모의비석장천련적조합반응기，고찰기대지하수중초산염담적거제효과，위수초산염오염적지하수제공경제유효적수복방법.결과표명，재30℃조건하，통입초태담농도위65 mg/L적지하수，이거말화옥미갈간적혼합물작위탄원，비석작위진일보적수복반응능유효적거제모의지하수중적초산염.재15 d적운행시간내，모의장치대수중적초태담거제솔위90%이상，시험과정중출현아초산염화안담적적루，기중출수중아초산염담농도위0.020～0.120 mg/L，안담농도위0.7～2.5 mg/L，출수pH치개우6.7～7.7지간.
To provide a cost-effective method for the remediation of nitrate-polluted groundwater,at the suitable temperature, column experiments were performed to study the removal of nitrate by permeable reactive barrier filled with the mixed carbon source. The results show that under 30℃passing into the nitrate concentration of 65 mg/L in groundwater, with a mixture of sawdust and corn stalks as carbon, zeolite as a further repair response can effectively simulate nitrate of groundwater. In the running time of 15 d, with the combined reactor, the removal rate of nitrate in groundwater is more than 90%. During the test, the accumulation of nitrite and ammonia occurs, the concentration of ammonia nitrogen was fluctuated in the 0.02~0.12 mg/L, and the concentration of nitrite was changed between 0.7~2.5 mg/L. The effluent pH was 6.7~7.7.