Study on Purified Efficiency of Plants on COD Removal from Domestic Sewage and the Change of DO(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2013年09期

Page:

70-73

Research Field:

Publishing date:

Info

Title:

Study on Purified Efficiency of Plants on COD Removal from Domestic Sewage and the Change of DO

Author(s):

ZHAO Yan¹; QI Ji-zhong¹; WANG Xu-he²

1.College of Forestry，Beihua University,Jilin，Jilin 132013；

2.Jilin Garden Management Office,Jilin，Jilin 132013

Keywords:

plants; purification; chemical oxygen demand(COD); dissolved oxygen(DO); landscape design

PACS:

X 503.23

DOI:

-

Abstract:

Taking 19 species of wetland plants along the Songhua river in Jilin city as test materials，the purification efficiency of chemical oxygen demand(COD) and the change of dissolved oxygen (DO) of domestic sewage was researched in this paper.The results showed that plants could purify domestic sewage，and the purification ability was varied in different species.Coleus blumei Benth.could effectively reduce content of chemical oxygen demand (COD)，the highest removal efficiencies for COD was 95.18%;Oenanthe javanica (Blume) DC.had better efficiency to increase dissolved oxygen (DO) in sewage，and the maximum increase was 262.22%；Rumex patientia L.var.callosusF.Schmidt, Erigeron annuus (L.) Pers.,Coleus blumei Benth.,Polygonum persicaria L.,Oenanthe javanica(Blume) DC.may be used as plants for the construction of domestic sewage purification landscape，because these plants had better comprehensive capacity for domestic sewage purification of removal of chemical oxygen demand and increase of dissolved oxygen.

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