The effects of purifying livestock wastewater by different aquatic plants

2013 International Conference on Materials for Renewable Energy and Environment Pub Date : 2013-08-01 DOI:10.1109/ICMREE.2013.6893757

Shaopeng Li, Ligang Wang, Peizhen Chen

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引用次数: 2

Abstract

Large amounts of nitrogen and phosphorus and other pollutants in livestock wastewater caused serious water pollution. Using aquatic plants can be effective for removal and purification livestock wastewater. In this paper, the purifying efficiency of livestock wastewater with three aquatic plant species, Potamogeton pectinatu, Elodea nuttallii, and Duckweed were investigated by Aquatic plant purification tank simulating experiment. The results showed that the aquatic plants had significant removal efficiency. The removal efficiency of Turbidity attained 80.6%, 82.6%, 90.8% respectively and dissolved oxygen, respectively, increased to 83%, 89.3%, 94.8%. Removal rate of COD in Duckweed tank accounted for 43.83%, which was significantly higher than those in Potamogeton pectinatu, and Elodea nuttallii tanks. Three aquatic plants had high removal rate of total phosphorus (TP), which reached 84.4%, 90.5%, 95.95% respectively. Removal rate of total nitrogen (TN) which attained 76.4% in Elodea nuttallii tank was evidently higer than those in Potamogeton pectinatu, and Duckweed tanks. Moreover, removal rate of ammonia nitrogen (NH4+-N) in three aquatic plants tank had reached more than 95%. Over all, the pollutant removal efficiency showed a sequence of Duckweed > Elodea nuttallii > Potamogeton pectinatu.

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不同水生植物净化畜禽废水的效果

畜牧业废水中含有大量的氮、磷等污染物，造成了严重的水污染。利用水生植物可以有效地去除和净化牲畜废水。本文采用水生植物净化池模拟实验，研究了三种水生植物(Potamogeton pectinatu, Elodea nuttallii, ducducweed)对畜禽废水的净化效果。结果表明，水生植物具有显著的去除效果。浊度去除率分别为80.6%、82.6%、90.8%，溶解氧去除率分别为83%、89.3%、94.8%。浮萍池对COD的去除率为43.83%，显著高于赤潮马铃薯池和黄颡鱼池。3种水生植物对总磷的去除率较高，分别达到84.4%、90.5%、95.95%。对总氮(TN)的去除率在褐藻池中达到76.4%，明显高于褐藻池和浮萍池。此外，三个水生植物池对氨氮(NH4+-N)的去除率达到95%以上。总体而言，浮萍对污染物的去除效率依次为:浮萍>绿豆>赤豆。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 International Conference on Materials for Renewable Energy and Environment

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