Dirty water treatment system of ecological method

The utility model relates to a biological treatment field of water, waste water or sewage specifically discloses a dirty water treatment system of ecological method, including vegetation pond, inlet tube and play basin, the relative both sides in the vegetation pond are connected respectively with the play basin to the inlet tube, the vegetation pond by down supreme including the filter layer, purify the layer and plant the vegetation crowd on purifying the layer, purify the mixture that the layer is earth and breeze, the inlet tube goes out the water end (W. E. ) to be buried underground in the bottom of filter layer, and the end of intaking of inlet tube stretches out the outside in vegetation pond, it locates the upper end border department in vegetation pond to go out the basin. The beneficial effect of this base case lies in: sewage is from the bottom mode through the overflow that lets in in vegetation pond, makes sewage respectively through filtering and biological purification, and sewage flows throug