文献类型： 会议论文

第一作者： Xuhui Kong

作者： Xuhui Kong ¹ ; Weiwen Lin ¹ ; Biqing Wang ¹ ; Fuhe Luo ² ;

作者机构： 1.Floricultural Research Institute of Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China

2.Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China

关键词： pig farm;wastewater;uptake;purify;Vetiveria zizanioides;heavy metals

会议名称： Proceedings the third international conference on vetiver and exhibition

主办单位：

页码： 181-185

摘要： Nitrogen, phosphorus and heavy metals from pig farms are key sources of water pollution. Wastewater contains nitrogen and phosphorus which are the most important plant nutrients, but is harmful when applied to agricultural land in excess amounts, thereby leading to pollution of ground water by nitrates, surface water by phosphorous (causing eutrophication) and soil by heavy metals such as copper which are used as growth promoters in the feed stuff. The main objective of this paper was to investigate the effects of vetiver (Vetiver zizanioides) in purifying wastewater from pig farms and design a purifying system for pig farms with a Vetiver bamboo float. The results showed that Vetiver had a very high capacity to purify wastewater. It's ratio of uptake and purification to Cu and Zn > 90%, to As and N > 60%, to P was between 59-85%, to Pb was between 30-71%, and to Hg was between 13-58%. The purifying effects of Vetiver to heavy metals, N, and P from pig farms were ranked as Zn > Cu > As > N > P > Pb > Hg. It is powerful to remove the elements of Cu, Zn, As and N for pig farms.

分类号： S543.9