Khlong Saen Saep Water Quality Effect due to Population Growth and Mitigation Measures

Abstract

Abstract

The economic growth expansion of Bangkok can be caused to the Khlong Saen Saep Canal which flow through community, in term of decaying water quality. Khlong Saen Saep plays an important role of receiving waste water from community urban and drainage discharge flow without treatment. Due to population growth in Bangkok, the wastewater load that will be drained into canal and also increased drastically. It would caused severe deterioration sooner or later. The objective of this study aims to improve water quality in Khlong Sean Saep canal for next decade and to suggest mitigation measures by using mathematical model MIKE 11. The study area is selected between Ban Chan Regulator and Khlong Tan Regulator that coverage distance as 14.5 kilometers, with 7 main tributaries. The hydraulics and water quality observed data in 2010 have been used to in MIKE 11 model. As the results, the simulation of BOD in sewerage flow will best fit values to 120 mg/l. An alternative of improvement water quality in Khlong Sean Saep in 2013 and 2023 can be founded that the amount of BOD in wastewater  have to be decreased prior to draining into the canal in 60 and 70 percent respectively. Therefore, water treatment practical measures in future can be selected based on our results.