Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands

Constructed wetlands have been used as an alternative option to treat wastewater. The adaptation of natural system has attracted researchers to use it considering its many advantages of environment friendly, cost and energy saving. Constructed wetlands have also been introduced in Malaysia, but s...

Full description

Saved in:

Bibliographic Details
Main Author:	Zakaria, Fiona
Format:	Thesis
Language:	English
Published:	2006
Subjects:	Sewage - purification Constructed wetland - Malaysia
Online Access:	http://psasir.upm.edu.my/id/eprint/5160/1/FK_2006_107%20IR.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upm-ir.5160
record_format	uketd_dc
spelling	my-upm-ir.51602021-12-29T03:14:47Z Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands 2006-08 Zakaria, Fiona Constructed wetlands have been used as an alternative option to treat wastewater. The adaptation of natural system has attracted researchers to use it considering its many advantages of environment friendly, cost and energy saving. Constructed wetlands have also been introduced in Malaysia, but since it is a new development, more studies should be carried out to support its implementation to suit Malaysian condition. In this study, a functional pilot scale of constructed wetlands to treat domestic wastewater was designed and constructed. The main objective of the study is to determine the effect of different hydraulic loading rates (HLRs) on the treatment efficiency. Wetlands were designed and constructed inside the engineering complex, Faculty of Engineering, UPM. There are three cells of constructed wetlands, all built in equal dimension, two cells were planted with Lepironia articulata, an indigenous Malaysia aquatic plant, known to be capable to remove pollutant from water, while one cell left unplanted to investigate the role of the plant in treatment process. Those cells were operated at four different HLRs in 2 phases e.g. 32, 16, 5.33 and 2.29 cm3/cm2/d which corresponding to hydraulic retention time (HRT) of 0.5, 1, 3 and 7 days respectively. Influent and effluent from each cell were then brought to laboratory to be tested. Parameters tested are pH, temperature, chemical oxygen demand (COD), total suspended solid (TSS), total phosphorous (TP), total ammonia nitrogen (TAN), nitrate, nitrite, total inorganic nitrogen (TIN), total coliforms, cadmium, copper, nickel, lead and zinc. The results show overall removal rates of 50.18 to 88.49% for TSS, 56.77 to 77.62% for COD, 39.67 to 88.68% for TP, 27.50 to 98.79% for TAN, 27.23 to 96.34% for TIN and 3 to 4 orders of magnitude for total coliforms. It was found that HLR has significant effect on removal of COD, TP, TAN and TIN, while the existence of plant only has effect on nitrogen removal, and TP when it was set at long retention time in Phase 2 (3 days). Effluents from constructed wetlands met requirements of Standard A of discharge standard for Malaysia, meaning that the effluents were safe to be discharged to any inland waters. Sewage - purification Constructed wetland - Malaysia 2006-08 Thesis http://psasir.upm.edu.my/id/eprint/5160/ http://psasir.upm.edu.my/id/eprint/5160/1/FK_2006_107%20IR.pdf text en public masters Universiti Putra Malaysia Sewage - purification Constructed wetland - Malaysia Faculty of Engineering Saed, Katayon
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
advisor	Saed, Katayon
topic	Sewage - purification Constructed wetland - Malaysia
spellingShingle	Sewage - purification Constructed wetland - Malaysia Zakaria, Fiona Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands
description	Constructed wetlands have been used as an alternative option to treat wastewater. The adaptation of natural system has attracted researchers to use it considering its many advantages of environment friendly, cost and energy saving. Constructed wetlands have also been introduced in Malaysia, but since it is a new development, more studies should be carried out to support its implementation to suit Malaysian condition. In this study, a functional pilot scale of constructed wetlands to treat domestic wastewater was designed and constructed. The main objective of the study is to determine the effect of different hydraulic loading rates (HLRs) on the treatment efficiency. Wetlands were designed and constructed inside the engineering complex, Faculty of Engineering, UPM. There are three cells of constructed wetlands, all built in equal dimension, two cells were planted with Lepironia articulata, an indigenous Malaysia aquatic plant, known to be capable to remove pollutant from water, while one cell left unplanted to investigate the role of the plant in treatment process. Those cells were operated at four different HLRs in 2 phases e.g. 32, 16, 5.33 and 2.29 cm3/cm2/d which corresponding to hydraulic retention time (HRT) of 0.5, 1, 3 and 7 days respectively. Influent and effluent from each cell were then brought to laboratory to be tested. Parameters tested are pH, temperature, chemical oxygen demand (COD), total suspended solid (TSS), total phosphorous (TP), total ammonia nitrogen (TAN), nitrate, nitrite, total inorganic nitrogen (TIN), total coliforms, cadmium, copper, nickel, lead and zinc. The results show overall removal rates of 50.18 to 88.49% for TSS, 56.77 to 77.62% for COD, 39.67 to 88.68% for TP, 27.50 to 98.79% for TAN, 27.23 to 96.34% for TIN and 3 to 4 orders of magnitude for total coliforms. It was found that HLR has significant effect on removal of COD, TP, TAN and TIN, while the existence of plant only has effect on nitrogen removal, and TP when it was set at long retention time in Phase 2 (3 days). Effluents from constructed wetlands met requirements of Standard A of discharge standard for Malaysia, meaning that the effluents were safe to be discharged to any inland waters.
format	Thesis
qualification_level	Master's degree
author	Zakaria, Fiona
author_facet	Zakaria, Fiona
author_sort	Zakaria, Fiona
title	Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands
title_short	Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands
title_full	Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands
title_fullStr	Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands
title_full_unstemmed	Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands
title_sort	effects of hydraulic loading rates on sewage treatment efficiency of constructed wetlands
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2006
url	http://psasir.upm.edu.my/id/eprint/5160/1/FK_2006_107%20IR.pdf
_version_	1747810364301508608

Effects Of Hydraulic Loading Rates On Sewage Treatment Efficiency Of Constructed Wetlands

Similar Items