Constructed wetland systems have been used for treating
numerous forms of wastewaters, mainly including industrial, rural
household, urban household and nonpoint-source pollution,
especially urban household sewage and nonpoint-source pollution
(Matamoros and Salvado, 2012; Galanopoulos et al., 2013; Shao
et al., 2013). At present, constructed wetlands have been developed
into a sewage treatment technology that has high economic
efficiency and environmental effectiveness that is particularly
suited to sewage treatment in rural areas