Research on Purification Capacity of Hemerocallis citrina Baroni in Rural Aquaculture Wastewater(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:

2014年06期

Page:

66-69

Research Field:

Publishing date:

Info

Title:

Research on Purification Capacity of Hemerocallis citrina Baroni in Rural Aquaculture Wastewater

Author(s):

CHEN Juan¹; CHEN Su-juan¹; LI Ming-yin¹; HE Yun-xiao¹; GUO Ying¹; LI Yan²

1.Department of Urban and Rural Planning and Construction,Mianyang Normal University,Mianyang,Sichuan 610001；

2.Ecological Security and Protection Key Laboratory of Sichuan Province,Mianyang,Sichuan 610001

Keywords:

Hemerocallis citrina Baroni; aquaculture wastewater; purification capacity; growth; physiological response

PACS:

S 682.1+9

DOI:

-

Abstract:

Taking Hemerocallis citrina Baroni as material,by a hydro-cultural experiment,the purification capacity of Hemerocallis citrina Baroni in rural aquaculture wastewater and its growth and physiological adaptability to high and low concentration of waste water were studied.The results showed that Hemerocallis citrina Baroni significantly reduced the BOD,COD,NH₃-N,total-N and total-P content of wastewater compared with un-plant wastewater.Two concentration wastewater treatments differently affected the growth and physiological process of daylily.In two wastewater treatments,no difference in chlorophyll a content,carotenoid content and total chlorophyll content were observed,however,chlorophyll b content was decreased by high concentration wastewater treatment comparing with control plants.In high concentration wastewater treatment (HW),although leaf superoxide dismutase (SOD) activity slightly increased,but MDA content also significantly increased,indicating Hemerocallis citrina Baroni suffered obvious oxidant stress and membrane damage under HW treatment.On the other hand,the root activity significantly increased by low wastewater treatment (LW) and obviously decreased by HW treatment compared with control plant.In conclusion,HW treatment significantly inhibited the growth of Hemerocallis citrina Baroni,whereas the nitrogen and phosphor in LW treatment could be beneficial to the growth and biomass accumulation of Hemerocallis citrinaBaroni.Therefore,Hemerocallis citrina Baroni could purify aquaculture wastewater of some content.In practical application,Hemerocallis citrina Baroni could be considered as a selected plant in constructed wetland that combined with physical pre-treatment technology.

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