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Title: |
Remediation of Heavy Metals in Sewage Sludge Using Cannas and Mirabilis |
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Source: |
International Workshop on Diffuse Pollution-Management Measures and Control Technique (IWDCT 2010 E-BOOK)
(pp 278-284)
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Author(s): |
Xiangyu Bai, School of Environment Science & Spatial Informatics, China University of Mining and technology, Xuzhou, Jiangsu 221116;Xuzhou Institute of Technology, Xuzhou, Jiangsu 221008
Baoping Han, School of Environment Science & Spatial Informatics, China University of Mining and technology, Xuzhou, Jiangsu 221116
Hanhu Liu, School of Environment Science & Spatial Informatics, China University of Mining and technology, Xuzhou, Jiangsu 221116
Chao Qiu, School of Environment Science & Spatial Informatics, China University of Mining and technology, Xuzhou, Jiangsu 221116
Xiaoqing Wang, School of Environment Science & Spatial Informatics, China University of Mining and technology, Xuzhou, Jiangsu 221116 |
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Abstract: |
Two kinds of native flowers were selected to study the remediation of heavy metals in thesewage sludge which provided by the Yaozhuang sewage treatment plant of Xuzhou. The mainconclusions are as follows: 1) The cannas and mirabilis grew vigorously through the whole experimentalperiod, and they were not influenced by the toxic effects of the heavy metal in sewage sludge. Theseshowed the cannas and mirabilis had a good tolerance of the sewage sludge. 2) The cannas leave and stemaccumulation of the Cu, Zn, Cd, Pb reached to the maximum when the ratio of sludge and soil was 2:0 andthe values were 3.03 mg·plant-1, 1.92mg·plant-1, 0.059mg·plant-1 and 0.18 mg·plant-1. The cannas rootsaccumulation of the Cu, Cd, Pb reached the maximum when the ratio of sludge and soil was 2:0 and thevalues were 1.26mg·plant-1, 0.033mg·plant-1 and 0.061mg·plant-1. The cannas roots accumulation of Znreach the maximum when the ratio of the sludge and soil was 1:1 and the value was 1.44 mg·plant-1. 3) Themaximum of mirabilis leave and stem accumulations were 3.91mg·plant-1 to Cu when the ratio of sludgeand soil was 1:1 and 8.27mg·plant-1, 0.051mg·plant-1, 0.47mg·plant-1 to Zn, Cd, Pb when the ratio of sludgeand soil was 2:0. The maximum of mirabilis roots accumulations is 0.45mg·plant-1, 1.51mg·plant-1,0.011mg·plant-1, 0.065mg·plant-1 to Cu Zn Cd Pb when the ratio of sludge and soil was 2:0. 4) The cannashad better enrichment effects of Cu, Cd and the mirabilis had better enrichment effects of Zn, Pb ascompared the heavy metal tolerance, total accumulation, enrichment coefficient and translationcoefficient of these two kinds flowers.
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