Research Progress of Sewage Purification in Mangrove Constructed Wetland

Mangrove ecosystem,located in coastal zone,was so fragile a ecosystem that there were risks of letting sewage into natural mangrove.And the idea of using mangrove wetland for sewage purification as not mature.Through the summary of the sewage purification history and mechanism of mangrove constructed wetland,the existing problems of mangrove constructed wetland used to purify sewage were put forward.The direction which should be attached importance to in future research was proposed,in order to provide references for the application of idea sewage purification in mangrove constructed wetland in practice.