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首页> 外文会议>International Conference on Vetiver and Exhibition; 20031006-09; Guangzhou(CN) >Study on Vetiver's Purification for Wastewater from Pig Farm
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Study on Vetiver's Purification for Wastewater from Pig Farm

机译：香根草净化养猪场废水的研究

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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 zizanundes) 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.
机译：养猪场的氮，磷和重金属是水污染的主要来源。废水中的氮和磷是最重要的植物养分，但是如果过量施用于农田，则有害，从而导致硝酸盐污染地下水，磷（造成富营养化）污染地表水以及重金属如铜，用作饲料中的生长促进剂。本文的主要目的是研究香根草（Vetiver zizanundes）在净化养猪场废水中的效果，并设计一种采用香根草竹漂浮物的养猪场净化系统。结果表明，香根草具有很高的净化能力。铜和锌> 90％，砷和氮> 60％，磷的吸收和提纯率在59〜85％之间，铅的吸收率在30〜71％之间，汞的吸收和提纯率在13〜58％之间。香根草对养猪场中重金属，N和P的净化效果为Zn> Cu> As> N> P> Pb> Hg。对于养猪场来说，去除铜，锌，砷和氮元素非常有效。

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