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首页> 外文会议>Second International Conference on Wetlands amp; Remediation, Sep 5-6, 2001, Burlington, Vermont >AN ASSESSMENT OF THE ROLE OF REEDS, PHRAGMITES AUSTRALIS, IN THE TREATMENT OF WASTE WATERS USING SIMULATED WETLANDS
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AN ASSESSMENT OF THE ROLE OF REEDS, PHRAGMITES AUSTRALIS, IN THE TREATMENT OF WASTE WATERS USING SIMULATED WETLANDS

机译：用模拟湿地评估芦苇，芦苇等在芦苇水处理中的作用

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摘要

The contribution of reeds (Phragmites australis), to the biodegradation of organic matter in wastewaters and the mechanisms involved were investigated using a set of fifteen 68 dm~3 gravel-based vertical flow constructed wetlands. The treatments included constructed wetlands planted-up with live reeds dead reeds and ones with live reeds with the surface of the substratum sealed. These were compared to controls which had no reed and ones similar to the controls but where air was actively pumped into the substratum. Each of the treatments was replicated three times and each system had an interstitial volume of 25 dm~3. The wastewater contained of glucose and various inorganic solutes and was supplied continuously over a 12 month period at a rate of 20 dm~3 m~(-2) day~(-1). The constructed wetlands with live reeds removed 78% of the supplied COD as glucose at a concentration of lg dm~(-3), of which 56% is due to diffusion of oxygen directly through the surface of the substratum. However, the removal of ammonium and phosphate was lower than expected at 52% and 48% in the systems with live reeds. There were large seasonal effects on the removal of COD, nitrate and phosphate by reed based treatment systems, whilst there was less of a seasonal effect in actively aerated systems. It is estimated that reeds supply 4.3 g O_2 m~(-2) day~(-1) to the substratum.
机译：使用一组十五个68 dm〜3砾石基垂直流人工湿地，研究了芦苇（芦苇）对废水中有机物生物降解的贡献及其机制。处理方法包括在人工湿地上种植活芦苇，枯死的芦苇和在现场底层密封的活芦苇。将这些与没有芦苇的控件和与控件相似但空气被主动泵入底层的控件进行比较。每种处理重复三次，每个系统的间隙体积为25 dm〜3。废水中含有葡萄糖和各种无机溶质，并在12个月内以20 dm〜3 m〜（-2）天〜（-1）的速度连续供应。带有芦苇的人工湿地除去了提供的COD的78％，葡萄糖浓度为lg dm〜（-3），其中56％是由于氧气直接通过基质表面扩散所致。但是，在带有活芦苇的系统中，铵和磷酸盐的去除率低于预期的52％和48％。芦苇处理系统对COD，硝酸盐和磷酸盐的去除有很大的季节性影响，而主动曝气系统对季节性去除的影响较小。据估计，芦苇向底层提供了4.3 g O_2 m〜（-2）天〜（-1）。

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