CAJ | 학술논문

利用水上种植技术治理湖泊富营养化已被证明是一种行之有效的方法,而提高作物产量一直是阻碍该技术普及的一个难点.利用膨胀蛭石具有的强吸附性和阳离子交换能力,采用室内试验的方法,研究膨胀蛭石对富营养化水体中氮磷物质的富集效果.结果表明:当富营养化水体中的总磷和总氮浓度分别为0.5 mg/L和5 mg/L时,经过蛭石8 h的富集后,吸附基本达到平衡,水体中总磷和总氮的去除率可达78%和30%,而蛭石压滤液中总磷和总氮的浓度分别约是水体中总磷和总氮浓度的4和3倍.
이용수상충식기술치리호박부영양화이피증명시일충행지유효적방법,이제고작물산량일직시조애해기술보급적일개난점.이용팽창질석구유적강흡부성화양리자교환능력,채용실내시험적방법,연구팽창질석대부영양화수체중담린물질적부집효과.결과표명:당부영양화수체중적총린화총담농도분별위0.5 mg/L화5 mg/L시,경과질석8 h적부집후,흡부기본체도평형,수체중총린화총담적거제솔가체78%화30%,이질석압려액중총린화총담적농도분별약시수체중총린화총담농도적4화3배.
It is confirmed as an effective approach to manage eutrophicated lake by planting in water technology,but the popularization of the technology is difficult because of lower crop yield. By indoor experiment ,the paper studied the effect of TN,TP in eutrophic water absorbed by expanded vermiculite,which has a better absorption property and cation exchange capacity. Results indicated as follows:Expanded vermiculite has a better absorption capability to TN,TP in eutrophic water; when TN and TP concentration in eutrophic water is 0.5 mg/L and 5 mg/L,absorption equilibrium is obtained basically after 8 h; the removal ratio of TN,TP in eutrophic water is 76% and 30% respectively after 32 h; however,TN and TP concentration in vermiculite leachate is four times and three times than those in eutrophic water.