Abdul Salim, Nur Atikah (2015) Removal of phosphorus from domestic wastewater using discontinuous aerobic anoxic reactor. Masters thesis, Universiti Teknologi Malaysia, Faculty of Civil Engineering.
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Abstract
The discharge of excessive amounts of phosphorus (P) from domestic wastewater treatment plant is of interest in this study because the abnormally high levels of P as one of the nutrient elements can lead to eutrophication for the receiving waters. Although many methods have been proposed for the removal of P matter from industrial and municipal wastewater, such as Phoredox, A2OTM and UCT-type, the use of alternating aerobic-anoxic (AAA) system must be verified. This study proposes the use of Discontinuous Aerobic-Anoxic Reactor (DAAR) to remove P from domestic wastewater at Taman Impian Emas, Skudai, Johor using the nitrification and denitrification type of activated sludge. The objectives of this study are: (1) to evaluate the efficiency of P removal from domestic wastewater by a single reactor under aerobic digestion (AD) condition, and (2) to assess the performance of AAA process of using the different cycles of nitrification-denitrification to remove P from domestic wastewater. The average efficiency of AD to remove P from domestic wastewater was 48%. The efficiencies of AAA system to remove P from domestic wastewater, on the other hand, were verified as follows: (1) at 6-h AD and 6-h anoxic time (AT), the efficiency was 0%, indicating that there was no removal of P during the AAA process, (2) at 5-h AD and 5-h AT, the average efficiency was 48%, (3) at 4-h AD and 4-h AT, the average efficiency was 82%, (4) at 3-h AD and 3-h AT, the average efficiency was 91%, and (5) at 2-h AD and 2-h AT, the average efficiency was 88%. Therefore, the AAA system has exhibited a better performance compared to AD. The results of the study also show that the best condition of AAA system had a period of 3-h AD and 3-h AT and reached 91% efficiency with an average treated effluent concentration of less than 1.0 mg P/L. High performance of the AAA process has been proven by using domestic wastewater from Taman Impian Emas, Skudai, Johor, giving new insights into environmental engineering practices.
Item Type: | Thesis (Masters) |
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Additional Information: | Thesis (Sarjana Kejuruteraan (Alam Sekitar)) - Universiti Teknologi Malaysia, 2015; Supervisors : Assoc. Prof. Dr. Muhamad Ali Muhammad Yuzir, Prof. Dr. Abdull Rahim Mohd. Yusoff |
Uncontrolled Keywords: | phosphorus (P), eutrophication |
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
Divisions: | Civil Engineering |
ID Code: | 78855 |
Deposited By: | Widya Wahid |
Deposited On: | 17 Sep 2018 04:21 |
Last Modified: | 17 Sep 2018 04:21 |
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