A critical review of water quality indices and assessment of water quality in Songkhram and Tha Chin Rivers, Thailand | |
| Author | Thirimanna, Ruchira Deemantha |
| Call Number | AIT Caps. Proj. no.CIE-17-52 |
| Subject(s) | Water Quality--Thailand--Songkhram River Water Quality--Thailand--Tha Chin River |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Civil and Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-17-52 |
| Abstract | Water quality in-dices are a convenient tool in assessing water quality using various water quality parameters, and to analyse temporal and spatial changes. However selecting a water quality index to get the most optimal results has become a critical task. This study was carried out to ease the selection of a water quality index depending on the characteristics of the region of application. A critical review on most commonly used water quality in-dices was done as the first part of this study. Namely there are CCME, British Columbia Water Quality Index (BCWQI), National Sanitation Foundation water quality index (NSF-WQI), Weighted Arithmetic water quality index (WA-WQI), Oregon water quality index (OWQI), Universal water quality index (U-WQI), Overall Index of Pollution (OIP), Nemerow and Sumitomos Pollution Index, OConnor Indices, Comprehensive Water Quality Identification Index (CWQII), Overall Water Quality Index (OWQI), Smiths Index, Stoners Index and Recreational Water Quality Index (RWQI). Characteristics of each index is entered in a series of tables. As the second part of the study, water quality of Songkhram River and Tha Chin River was evaluated by CCME, BCWQI and WA-WQI in-dices. The in-dices were calculated using nine water quality parameters and namely they are pH, Total phosphorous (TP), Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Total Dissolved Solids (TDS), Nitrates (NO3 − N), Suspended Solids (SS), Turbidity and Conductivity. Three stations from each river was selected to evaluate the temporal and spatial variations of the rivers. It was found that similar results were obtained from all the three in-dices stating both the rivers were mostly in the polluted during the past ten years. |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-17-52 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Babel, Mukand Singh; |
| Examination Committee(s) | Shrestha, Sangam; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2017 |