k-C*模型的人工湿地模拟研究

赵蓉; 陈东宇; 周少奇; 吴彦瑜

k-C*模型的人工湿地模拟研究

华南理工大学土木与交通学院，广州 510641

华南理工大学环境科学与工程学院，广州 510006；3．华南理工大学亚热带建筑科学重点实验室，广州 510641

基金项目:

“十一五”国家科技支撑计划项目（2006BAJ04A12-4）

中图分类号: X703

Modeling of k-C* model for constructed wetland

School of Civil Engineering and Transportation， South China University of Technology， Guangzhou 510641， China

School of Environmental Science and Engineering， South China University of Technology， Guangzhou 510006， China；3. State Key Laboratory of Subtropical Building Science， South China University of Technology， Guangzhou 510641， China

Fund Project:

摘要: 采用自由表面流人工湿地，对广东省中山市某小区对应段的河涌进行生态修复改造。基于k-C*模型的计算结果表明，在对现有河涌的面积的利用下，TP和NH+4-N的去除效果受到限制。采用多因素正交实验对模型的计算结果进行实验验证和分析，研究了4种植物、4种基质，分别在2、4、6和8 d水力停留时间（HRT）下对TP和NH+4-N的去除效果，得到影响TP和NH+4-N去除效果的因素主次顺序分别为基质→植物→HRT和基质→HRT→植物；各因素的最佳水平条件分别为：风车草、颗粒活性炭、4 d(HRT)。在最佳水平条件下进行实验，结果表明，TP和NH+4-N的浓度均可达到出水排放标准浓度指标。k-C*模型的计算值总是比实验值偏高，但两者之间的误差在一个数量级范围内。

Abstract: Surface flow constructed wetland was conducted for the ecological restoration of a river in Zhongshan City， Guangdong Province. The predicted results based on k-C* model showed that the removal effects of TP and NH+4-N were restricted under the present utilized area of the river. Threefactorsfourlevels orthogonal experiment was used to verify and analyze the predicted results of k-C* model. Four plants and four substrates were selected to investigate the removal effects of TP and NH+4-N under 2， 4， 6， 8 d hydraulic retention time (HRT). The influencing factors on the removal effects of TP and NH+4-N in sequence were as follows: substrate→plant→HRT and substrate→HRT→plant，respecfively.The optimal levels of experiments were Cyperus alternifolius granular activated carbon，HRT (4 d). Experimental results under optimal levels indicated that both the residual TP and NH+4-N achieved the Chinese effluent standard. The comparison between experiment and model indicated that the predicted results were overestimated， but error was within one order magnitude.

Key words:

k-C*模型的人工湿地模拟研究

1. 华南理工大学土木与交通学院，广州 510641

2. 华南理工大学环境科学与工程学院，广州 510006；3．华南理工大学亚热带建筑科学重点实验室，广州 510641

收稿日期: 2010-09-15

基金项目:

“十一五”国家科技支撑计划项目（2006BAJ04A12-4）

关键词:

Modeling of k-C* model for constructed wetland

1. School of Civil Engineering and Transportation， South China University of Technology， Guangzhou 510641， China

2. School of Environmental Science and Engineering， South China University of Technology， Guangzhou 510006， China；3. State Key Laboratory of Subtropical Building Science， South China University of Technology， Guangzhou 510641， China

Received Date: 2010-09-15

Fund Project:

Keywords:

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