CAJ | 학술논문

研究柠檬酸和天冬氨酸对污泥中重金属的去除效果，以柠檬酸和天冬氨酸比例、pH、添加相差时间、反应时间为因素设计正交实验。结果表明，各反应条件因素对各重金属的去除影响大小依次为：pH值＞添加相差时间＞反应时间＞物质的量浓度比；最佳工艺条件：pH值为1．5，添加相差时间为9h，反应时间为18h ，柠檬酸与天冬氨酸物质的量浓度比0．2：0．4；各重金属的去除率：Zn为43．9％，Cu为18．7％，Pb为30．7％，Cd为74．7％，Cr为27．4％。
연구저몽산화천동안산대오니중중금속적거제효과，이저몽산화천동안산비례、pH、첨가상차시간、반응시간위인소설계정교실험。결과표명，각반응조건인소대각중금속적거제영향대소의차위：pH치＞첨가상차시간＞반응시간＞물질적량농도비；최가공예조건：pH치위1．5，첨가상차시간위9h，반응시간위18h ，저몽산여천동안산물질적량농도비0．2：0．4；각중금속적거제솔：Zn위43．9％，Cu위18．7％，Pb위30．7％，Cd위74．7％，Cr위27．4％。
Citric acid and aspartic acid is used to treat heavy metals in sewage sludge and the orthogonal experiment is de-signed with factors of citric acid and aspartic acid ratio ,reaction time ,pH and discrepant acid adding time .The results show that the impacts of various factors follows in this order :pH value> adding difference time> time> molar concentra-tion ratio ;the optimal conditions :pH 1 .5 ,discrepant acid adding time 9hs ,reaction time 18hs ,citric acid and aspartic acid molar ratio 0 .2:0 .4;in that condition the removal rate of Zn ,Cu ,Pb ,Cd and Cr can reach 43 .9% ,18 .7% ,30 .7% , 74 .7% ,27 .4% respectively .