DocumentCode
3577278
Title
Notice of Retraction
Nitrogen removal efficiency of different filter media and macrophyte in pilot-scale constructed wetland
Author
Singh, R.P. ; Jiang Ying he
Author_Institution
Dept. of Municipal Eng., Wuhan Univ. of Technol., Wuhan, China
Volume
2
fYear
2010
Firstpage
567
Lastpage
570
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
A pilot scale constructed wetland was setup for the studies of removal efficiency of nitrogen from treated municipal wastewater using various filter media and a macrophyte. For the current research work pulverized fly ash bricks, shale and gravel media were used and a macrophyte Phragmites was chosen to find out the removal efficiency with various filter media. In this study, four constructed wetlands with similar size and shape (0.25m2 each), received treated municipal wastewater with a high N concentration (about 13.19mg/L). The effect of hydraulic loads and filter media on total nitrogen and ammonia nitrogen removal were investigated through mass inflow and outflow measurements. The results show that 1.2 m3/m2.d hydraulic loading rate and shale filter media was most effective for TN removal, and fly ash brick media was the most effective for the NH4+ removal in 1.2 m3/m2.d hydraulic loading rate. The results show that removal rate of TN was highly significant with shale filter media and NH4-N with fly ash bricks filter media in different hydraulic loading rates and Phragmites spp. in current research work.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
A pilot scale constructed wetland was setup for the studies of removal efficiency of nitrogen from treated municipal wastewater using various filter media and a macrophyte. For the current research work pulverized fly ash bricks, shale and gravel media were used and a macrophyte Phragmites was chosen to find out the removal efficiency with various filter media. In this study, four constructed wetlands with similar size and shape (0.25m2 each), received treated municipal wastewater with a high N concentration (about 13.19mg/L). The effect of hydraulic loads and filter media on total nitrogen and ammonia nitrogen removal were investigated through mass inflow and outflow measurements. The results show that 1.2 m3/m2.d hydraulic loading rate and shale filter media was most effective for TN removal, and fly ash brick media was the most effective for the NH4+ removal in 1.2 m3/m2.d hydraulic loading rate. The results show that removal rate of TN was highly significant with shale filter media and NH4-N with fly ash bricks filter media in different hydraulic loading rates and Phragmites spp. in current research work.
Keywords
ammonium compounds; filtration; fly ash; microorganisms; wastewater treatment; N; Phragmites spp; ammonia nitrogen removal efficiency; filter media; gravel media; macrophyte; municipal wastewater treatment; pilot-scale constructed wetland; pulverized fly ash bricks; shale; Media; Nitrogen; Solids; Constructed wetland; Filter media; Macrophytes; Nitrogen removal efficiency;
fLanguage
English
Publisher
ieee
Conference_Titel
Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on
Print_ISBN
978-1-4244-7387-8
Type
conf
DOI
10.1109/ESIAT.2010.5568272
Filename
5568272
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