饲料植物水生环境处理猪场厌氧废液水的效果

Post-treatment of Anaerobically Digested Piggery Wastewater with Forage Hydrophyte Growing System

本文从COD,NH3-N,TN,TP四个方面分析了空心菜、水稻、水葫芦三种饲料植物水生环境处理猪场厌氧废液的水质变化规律。结果表明,三种饲料植物水生环境对猪场厌氧废液的COD去除率:空心菜>水稻>水葫芦;对NH3-N的去除率:水葫芦>水稻>空心菜;对TN的去除率:空心菜>水稻>水葫芦;对TP的去除率:水葫芦>空心菜>水稻。饲料植物对藻有抑制作用,藻对NH3-N和TN有去除作用,对照系统中由于藻的出现,增强了系统对NH3-N和TN的去除效果,因此在NH3-N和TN两指标上出现对照系统好于饲料植物处理系统。

Growing system of forage hydrophyte, Ipomoea aquatica, Oryza sativa, Eichhorniacrassipes, were experimented for post-treatment of Anaerobically Digested Piggery Wastewater. The efficieney on COD, NH3-N, TN, TP removal were detected. The result showed that, for the removal rate of COD： Ipomoea aquatica 〉 Oryza sativa 〉 Eichhornia crassipes, for removal rate of NH3- N ： Eichhornia crassipes 〉 Oryza sativa 〉 Ipomoea aquatica, for TN： Ipomoea aquatica 〉 Oryza sativa 〉 Eichhornia crassipes, and for that of TP： Eichhornia crassipes 〉 Ipomoea aquatica 〉 Oryza sativa. And the algae showed a function removing NH3-N and TN, For that the control group had hotter NH3-N and TN removal where algae grew well without the restraining by hydrophyte.