有机物和重金属复合污染水体的修复植物筛选及修复性能

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Abstract

Four species of plants,including Alocasia macrorrhiza,Syngonium podophyllum,Hymenocallis speciosa and Mariscus compactus,showing the ability in degradation of organic carbon,removal nitrogen and phosphorus,and accumulation heavy metals were selected and cultivated.Batch tests were carried out to study the removal potential of organic pollutants and heavy metals by these plants.The results indicated that they could improve the removal effeciency.After treating 10 liters of solutions by 55 to 60 grams of plants for 14 days,the removal effeciency exceeded 80%,72%,64%,53%,75%and 68%when the initial concentrations of BOD₅,COD_Cr,TP,TN,Cu²⁺ and Cr⁶⁺ were 140 mg·L^-1,280 mg·L^-1,6.8 mg·L^-1,40 mg·L^-1,10 mg·L^-1 and 10 mg·L^-1,respectively.In comparison with the control experiments,the removals of these indexes were increased by above 32%,27%,27%,28%,37%and 19%,respectively.The pH and DO of effluent could be maintained at 6.63 to 7.63,and 3.02 mg·L^-1 to 3.84 mg·L^-1.

Key words： urban river pollution phytoremediation organic pollution heavy metal

Received: 25 February 2011

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	Articles by authors
	TAN Xiao
	LONG Ying-xian
	YE Jin-shao
	CAI Bin
	LIU Fang-wan

Cite this article:

TAN Xiao,LONG Ying-xian,YE Jin-shao, et al. Hytoremediation of organic pollutants and heavy metals co-existed in water body[J]. , 2011, 30(1): 55-59.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2011/V30/I1/55

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