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Study on Purification Effect of Eichhornia crassipesand Activated Sludge on Domestic Sewage(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2019年02期
Page:
82-
Research Field:
环境工程
Publishing date:

Info

Title:
Study on Purification Effect of Eichhornia crassipesand Activated Sludge on Domestic Sewage
Author(s):
Yang Shunqing1; Han Xue1; Zhou Jianzhen1; Du Mingxia1; Zhang Xianqiu1; 2; Dai Kewei1
(1.School of Environment,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Key Laboratory of Material Circulation and Pollution Control,Nanjing Normal University,Nanjing 210023,China)
Keywords:
Eichhornia crassipes; activated sludge; sewage; nitrogen; phosphorus
PACS:
X703.1
DOI:
10.3969/j.issn.1672-1292.2019.02.011
Abstract:
The ecological restoration technology based on aquatic plants is increasingly expanding into the field of sewage treatment,but the application is limited due to its occupied large area. To improve the efficiency of the aquatic plant purification system,a purification system of Eichhornia crassipes combined with activated sludge is designed. The purification efficiency of domestic wastewater with low carbon and nitrogen ratio is studied and its purification mechanism is analyzed. The results show that the removal efficiency of nitrogen and phosphorus in the single system of Eichhornia crassipes is lower than those of microorganisms. However,the aerobic purification system of Eichhornia crassipes combined with activated sludge can exert plant uptake and biodegradation at the same time,which can significantly improve the removal efficiency of N,P,COD and other pollutants. It provides a useful basis for the engineering application of sewage plant purification system.

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Last Update: 2019-06-30