人工湿地处理废水有机物动态模型的研究

Study on Dynamic Model of Organic Pollutants in Wastewater Treatment by Constructed Wetland

以风车草人工湿地处理猪场废水,研究人工湿地处理废水有机物的动态模型。人工湿地一年四季连续运行,秋季和春季湿地以相同进水浓度和不同水力停留时间的方式运行;冬季和夏季以相同水力停留时间和不同进水浓度的方式运行。COD作为有机物降解的建模指标。结果表明,湿地进出水COD服从指数方程规律。提出了基于运行温度和进水浓度的湿地出水COD预测模型,预测结果误差在10%以内。

The dynamic model of treating organic pollutants from hoggery wastewater by constructed wetland with planting cyperas alternifolius is studied. The manmade wetland works all the year round. In autumn and spring, it works with the same inflow water concentration and the different water residence time, in winter and summer, it works with the same water residence time and the different inflow water concentration. COD is regarded as the check index. The results show that the COD at the inflow and outflow follows the rule of exponential equation. A prediction model based on running temperate and inflow concentration is made to calculate COD index. The calculation error is less than 10%.