Position: Home > Articles > A Pilot Study on Purification of Wastewater and Amelioration of Aeolian Sandy Soil Using Extremely Shallow Subsurface Flow Constructed Wetland
Bulletin of Soil and Water Conservation
2016,36
(2)
120-124
极浅型潜流人工湿地用于污水处理和风沙土改良的中试研究
作 者：
肖松丽;任勇翔;陈灿灿;高中秋;曹亚峰;王新伟;李榜晏
单 位：
大连都市发展设计有限公司;陕西省建筑设计研究院;陕西省环境工程重点实验室西安建筑科技大学
关键词：
极浅型潜流;人工湿地;污水;风沙土改良;物料平衡
摘 要：
[目的]就利用极浅型潜流人工湿地同步处理污水和改良风沙土的可行性进行中试,为后续相关工程的设计、建设和运行提供科学依据。[方法]以污水处理厂初沉池出水为原水,以取自毛乌素沙漠的风沙土为湿地填料,以高羊茅、黑麦草和狗牙根为湿地栽培植物,研究并分析湿地对水中污染物的去除效果和在风沙土的富集特征。[结果]经过15个月的运行,各湿地对污水中COD,TN以及TP的平均去除率分别高于原土68.75%,70.09%和62.74%。运行完毕后,各湿地风沙土较原土有机质、全氮含量显著增加(p<0.05),全磷含量虽呈增加趋势但增幅不显著(p>0.05),其中风沙土有机质、全氮及全磷含量分别较原土增加了10.64~18.77,8.74~13.98,0.34~0.55倍。[结论]利用极浅型潜流人工湿地同步处理污水和改良风沙土可行。它既能高效净化污水,又可快速提升风沙土的生产力。
译 名：
A Pilot Study on Purification of Wastewater and Amelioration of Aeolian Sandy Soil Using Extremely Shallow Subsurface Flow Constructed Wetland
作 者：
XIAO Songli;REN Yongxiang;CHEN Cancan;GAO Zhongqiu;CAO Yafeng;WANG Xinwei;LI Bangyan;Shaanxi Key Laboratory of Environmental Engineering,Xi'an University of Architecture and Technology;Shaanxi Architectural Design Institute;Dalian Urban Development Design Co.Ltd.;
关键词：
extremely shallow subsurface flow;;constructed wetlands;;sewage;;amelioration of aeolian sandy soil;;material balance
摘 要：
[Objective]A pilot study using extremely shallow subsurface flow of constructed wetlands for treating wastewater and amelioration of aeolian sandy soil was simultaneously carried out,in order to give scientific bases for the design,construction and operation of related works.[Methods]Raw water was drawn from a primary sedimentation in a municipal wastewater treatment plant.The aeolian sandy soil taken from the Mu Us Desert was used as the substrate of constructed wetlands in which Festuca arundinacea,Lolium perenne and Cynodon dactylon were cultivated respectively.The removal efficiency of pollutants by wetland subsurface flow and the enrichment of flow-carried nutrients in the cultivation soil were studied.[Results]After 15months' operation,the minimum removal rates of COD,TN and TP of all wetlands were 68.75%,70.09% and 62.74%,respectively.Organic matter and TN content in substrate of wetlands increased significantly(p<0.05)as compared with the corresponding values of the raw soil.TP content in substrate also got increased but was not pronounced(p>0.05).Organic matter,TN and TP content increased 10.64 to 18.77,8.74 to 13.98,and 0.34 to 0.55 times against the indices of raw soil,respectively.[Conclusion]It is feasible for using the extremely shallow subsurface flow of constructed wetland to simultaneously treat wastewater and amelioration of aeolian sandy soil,it can not only effectively purify wastewater but also can rapidly improve the fertility of aeolian sandy soil.
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