Author(s)

Bo Yang, Jie Tang

Corresponding Author

Bo Yang

Abstract

Using the simulated planting method, this paper compares the sewage purification effect of 7 kinds of ornamental shrubs on TP, TN and COD. The results show that, all shrubs have obvious purification effects on TP, TN and COD in sewage. The TP purification abilities of shrubs go as following: Spiraea japonica Gold Mound. > Amorpha fruticosa Linn. > Swida alba Opiz. > Ligustrum obtusifolium Sieb. > Lespedeza bicolor Turcz. > Syringa oblata Lindl. > Forsythio mandshurica Uyeki.. TN purification abilities of shrubs go as following: Amorpha fruticosa Linn. > Spiraea japonica Gold Mound. > Lespedeza bicolor Turcz. > Ligustrum obtusifolium Sieb. > Swida alba Opiz. > Forsythio mandshurica Uyeki. > Syringa oblata Lindl. COD purification abilities of shrubs go as following: Spiraea japonica Gold Mound. > Swida alba Opiz. > Syringa oblata Lindl. > Amorpha fruticosa Linn. > Lespedeza bicolor Turcz. > Ligustrum obtusifolium Sieb. > Forsythio mandshurica Uyeki. The purification rates show a declining trend then keep constant with time passing by.

Keywords

Shrubs, Tp, Tn, Cod, Purification Rate