Nitisoravut Suwanchai, Klomjek Pantip
Sirindhorn International Institute of Technology, Thammasat University, P.O. Box 22, Thammasat Rangsit Post Office Pathumthani 12121, Thailand.
Water Res. 2005 Nov;39(18):4413-9. doi: 10.1016/j.watres.2005.08.018. Epub 2005 Oct 19.
A mathematical model was developed in order to describe the system behavior and performance of a constructed wetland (CW) treatment under salt-affected conditions. The rate of biodegradation of organic wastes was modeled using the first-order kinetics while the effect of salt concentrations was accounted by growth inhibition. Experimental data were used to determine model constants of the mathematical model. The experimental units were planted with cattail (Typha angustifolia) and fed with spiked municipal wastewater. The hydraulic retention time varied from 12 to 120 h and wastewater conductivity was in the range of 4-32 mS/cm. At specified conditions the model was found to well describe the trend of the experimental data in terms of BOD removal with the Pearson correlation of 0.872. The model also permits construction of a nomograph which can be used to aid the design and prediction of CW treatment under salt-affected conditions.
为了描述在盐渍化条件下人工湿地（CW）处理系统的行为和性能，开发了一个数学模型。有机废物的生物降解速率采用一级动力学进行建模，而盐浓度的影响则通过生长抑制来考虑。实验数据用于确定该数学模型的常数。实验单元种植了香蒲（宽叶香蒲），并投喂了加标的城市污水。水力停留时间在12至120小时之间变化，废水电导率在4至32 mS/cm范围内。在特定条件下，发现该模型能够很好地描述实验数据中生化需氧量去除的趋势，皮尔逊相关系数为0.872。该模型还允许构建诺模图，可用于辅助盐渍化条件下人工湿地处理的设计和预测。
