Reed bed treatment systems Excursion with students Construction of a reed bed treatment plant in Southern Vietnam Lotus Island Project China, West area Dec 2009 Lotus Island Project China, West area July 2010 Xiayingtian Village China,  Vertical flow reed bed Xiyang Village China, Horizontal flow reed bed Xiyang Village China, Riparian stormwater treatment biotop Mexico City, senior residence wastewater treatment and reuse