A combined system of lagoon and constructed wetland for an effective wastewater treatment

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• 作者：Steinmann ; Christian R. ; Weinhart ; Sabine ; Melzer ; Arnulf
• 关键词：Algae ; Constructed wetland ; Effluent polishing ; Lagoon ; Post treatment
• 刊名：Water Research
• 出版年：2003
• 出版时间：May, 2003
• 年：2003
• 卷：37
• 期：9
• 页码：2035-2042
• 全文大小：1.02 M

文摘

Lagoon systems are a common and effective method to purify communal sewage in rural areas. Low costs and high purification rates are some of their advantages. But mostly algae blooms in the lagoon cause a secondary pollution of the following stream. In order to tackle this problem, several tests have been carried out combining both lagoon and filtering system. This paper describes a 3 year study on the combination of a lagoon and a planted filter dam in one basin. This system has shown a high and continuous retention rate of algae, pH buffering and a further reduction of general sewage parameters. Furthermore, the effects of varying weather conditions (dry, wet) and seasonal aspects on this combined system will be presented.