The Flow Field Distribution of Subsurface Flow Constructed Wetlands

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this paper reviewed the progress of flow field distribution in subsurface flow constructed wetlands (SSF), generalized the theoretical basis for numerical simulation of flow field distribution and the application of computer software in subsurface flow constructed wetlands. At the same time, analysed the relationship of flow field distribution with the bed body of aspect ratio, substrate thickness, material properties of matrix and the way of filling, found that the appropriate aspect ratio, substrate thickness and scientific way of filling could improve the flow field distribution, which was an effective way to improve the utilization rate of substrate. In addition, summarized the plant roots system and microbe growth effect on the flow field distribution. Therefore, the flow field distribution was directly effected of utilization ratio of matrix material, and living environmental condition of microbe, thus the flow field distribution as a parameter for design would be a kind of scientific method. Finally, proposed the corresponding research methods, and discussed how to improve the flow field distribution uniform, for improving the design level of subsurface flow constructed wetlands.

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472-477

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October 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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