CAJ | 학술논문

为构建底泥活性覆盖系统进而有效地控制湖泊底泥内源污染，以脱碱赤泥为主料，粉煤灰、粘土和碳酸钙为辅料，采用烧结法制作了不同配比的底泥覆盖材料，研究其对内源污染物的控制效果。结果表明：1）覆盖各处理溶解氧为2．62～5．98 mg/L，对照组为0．74～2．65 mg/L，覆盖可改善上覆水体溶解氧水平。2）覆盖各组中除处理2和处理4外，其余处理总磷均为低检出或未检出，对照组在第12、16和20天依次检出0．03 mg/L、0．04 mg/L 和0．13 mg/L；化学需氧量为6～71 mg/L，对照组则为21～84 mg/L，对照组总磷和化学需氧量均随时间推移呈渐增趋势；除处理3和处理6外，其余处理对氨氮控制效果不理想。3）优化原料配比可使上覆水体 Cu、Pb、Zn、Cr、Cd、Fe、Mn、Ca 和 Mg 处于安全浓度范围，不会增加水体金属元素的积累。从对内源污染物的控制效果和上覆水体水质的稳定性两方面综合考虑，处理6（赤泥38．9％，粘土14．4％，粉煤灰38．9％，碳酸钙7．8％）最适于深谷型湖泊底泥污染原位控制。
위구건저니활성복개계통진이유효지공제호박저니내원오염，이탈감적니위주료，분매회、점토화탄산개위보료，채용소결법제작료불동배비적저니복개재료，연구기대내원오염물적공제효과。결과표명：1）복개각처리용해양위2．62～5．98 mg/L，대조조위0．74～2．65 mg/L，복개가개선상복수체용해양수평。2）복개각조중제처리2화처리4외，기여처리총린균위저검출혹미검출，대조조재제12、16화20천의차검출0．03 mg/L、0．04 mg/L 화0．13 mg/L；화학수양량위6～71 mg/L，대조조칙위21～84 mg/L，대조조총린화화학수양량균수시간추이정점증추세；제처리3화처리6외，기여처리대안담공제효과불이상。3）우화원료배비가사상복수체 Cu、Pb、Zn、Cr、Cd、Fe、Mn、Ca 화 Mg 처우안전농도범위，불회증가수체금속원소적적루。종대내원오염물적공제효과화상복수체수질적은정성량방면종합고필，처리6（적니38．9％，점토14．4％，분매회38．9％，탄산개7．8％）최괄우심곡형호박저니오염원위공제。
The control effect of the sediment coverage materials made from de-alkalized red mud,coal ash,clay and calcium carbonate with different proportion on endogenous pollutants of Hongfeng Lake to build the active sediment cover system for controlling endogenous pollution of lake sediments effectively. The results showed that :1)The dissolved oxygen (DO)of different cover treatments and CK is 2.62~5.98 mg/L and 0.74~2.65 mg/L,which indicates that the coverage can improve DO level of the overlying water;2)TP of different treatments except treatment 2 and treatment 4 is not detected but TP of CK after 12d,16d and 20d is 0.03mg/L,0.04 mg/L and 0.13 mg/L.The chemical oxygen demand (COD)of different treatments and CK is 6~71 mg/L and 21 ~84mg/L.TP and COD of CK both show a gradual increase trend.There was no evidence for decrease of NH3-N after coverage,except treatment 3 and 6;3)The coverage material made from different raw materials with the optimized ratio does not increase heavy metals accumulation of water body,and the concentration of Cu,Pb,Zn,Cr,Cd,Fe,Mn,Ca and Mg in the overlying water still is in the safety range.The coverage material made from 38.9% de-alkalized red mud,14.4% clay,38.9% coat ash and 7.8% calcium carbonate is most suitable to controlling sediment pollution in lakes with barranca type according to control effect of endogenous pollutants and water quality stability of the overlying water.