Design of secondary wastewater treatment for rural China

In this study, a rural village upstream of the Three Gorges Reservoir, the Jiaoyuan Village in Chongqing, China, was investigated to develop a feasible secondary wastewater treatment system. The constructed wetland was considered as the best choice for this application due to its effectiveness in se...

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Main Author: Pan, Shan Shan
Other Authors: Tay Joo Hwa
Format: Final Year Project
Language:English
Published: 2010
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Online Access:http://hdl.handle.net/10356/39440
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-394402023-03-03T17:22:50Z Design of secondary wastewater treatment for rural China Pan, Shan Shan Tay Joo Hwa School of Civil and Environmental Engineering Lien Institute for the Environment DRNTU::Engineering::Environmental engineering::Water treatment In this study, a rural village upstream of the Three Gorges Reservoir, the Jiaoyuan Village in Chongqing, China, was investigated to develop a feasible secondary wastewater treatment system. The constructed wetland was considered as the best choice for this application due to its effectiveness in secondary treatment, minimal operation and maintenance requirement, cost effectiveness and the ecological benefits. Two wetland designs were proposed to accommodate two different forms of household distribution. A layered subsurface flow constructed wetland (SSFCW) was designed to treat greywater generated from a single household and a surface flow constructed wetland (SFCW) was designed for clusters of households. The prototypes of both designs were constructed in NTU to test the treatment efficiency of COD, TN and TP using the synthetic greywater. Five wetland species, available both in Chongqing and Singapore, were chosen for the experiment, where Cyperus Alternifolius, Alocasia and Acorus calamus were planted in the SSFCW prototype and Thalia dealbata and Typha Angustifolia in the SFCW prototype. Three sets of pollutant loadings were applied in the experiment. Both the SSFCW prototype and the SFCW prototype showed good COD removal efficiency, up to 94.20% and 89.86% respectively. However, the systems failed to establish reliable and effective TN and TP treatments. Possible explanations are provided in the report. Bachelor of Engineering (Environmental Engineering) 2010-05-24T06:52:47Z 2010-05-24T06:52:47Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/39440 en Nanyang Technological University 51 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering::Water treatment
spellingShingle DRNTU::Engineering::Environmental engineering::Water treatment
Pan, Shan Shan
Design of secondary wastewater treatment for rural China
description In this study, a rural village upstream of the Three Gorges Reservoir, the Jiaoyuan Village in Chongqing, China, was investigated to develop a feasible secondary wastewater treatment system. The constructed wetland was considered as the best choice for this application due to its effectiveness in secondary treatment, minimal operation and maintenance requirement, cost effectiveness and the ecological benefits. Two wetland designs were proposed to accommodate two different forms of household distribution. A layered subsurface flow constructed wetland (SSFCW) was designed to treat greywater generated from a single household and a surface flow constructed wetland (SFCW) was designed for clusters of households. The prototypes of both designs were constructed in NTU to test the treatment efficiency of COD, TN and TP using the synthetic greywater. Five wetland species, available both in Chongqing and Singapore, were chosen for the experiment, where Cyperus Alternifolius, Alocasia and Acorus calamus were planted in the SSFCW prototype and Thalia dealbata and Typha Angustifolia in the SFCW prototype. Three sets of pollutant loadings were applied in the experiment. Both the SSFCW prototype and the SFCW prototype showed good COD removal efficiency, up to 94.20% and 89.86% respectively. However, the systems failed to establish reliable and effective TN and TP treatments. Possible explanations are provided in the report.
author2 Tay Joo Hwa
author_facet Tay Joo Hwa
Pan, Shan Shan
format Final Year Project
author Pan, Shan Shan
author_sort Pan, Shan Shan
title Design of secondary wastewater treatment for rural China
title_short Design of secondary wastewater treatment for rural China
title_full Design of secondary wastewater treatment for rural China
title_fullStr Design of secondary wastewater treatment for rural China
title_full_unstemmed Design of secondary wastewater treatment for rural China
title_sort design of secondary wastewater treatment for rural china
publishDate 2010
url http://hdl.handle.net/10356/39440
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