| 英文摘要 |
In this study, the hydrologic investigation for the Love River were conducted and the recent water monitoring data (2014-2016, EPB, Kaohsiung City, Taiwan) of the Love River were also collected and evaluated. In this study, the sediment samples from the Love river were collected from the upper, mid, and downstream sections to evaluate the heavy metal and organic compound distributions in the sediments. Sediment investigation results show that the organic compound concentrations were lower than the lower level of sediment quality. Compared to the effects range low (ERL) values established by National Oceanic and Atmospheric Administration (NOAA), polycyclic aromatic hydrocarbons (PAHs) had insignificant impact on the aquatics. However, sediment contained higher concentrations of Cu, Zn, Ni, and Hg, which were higher than the lower level of the sediment quality. Moreover, Cu, Zn, Ni, and Hg concentrations were close to the effect range median (ERM) indicating the heavy metals had some impact on the aquatics. Thus, the sediment quality needs to be further investigated and the results can be used to develop the sediment management strategies. The water quality model [Water Quality Analysis Simulation Program (WASP)] (developed by USEPA) was applied for the water quality modelling of the Love River. The modelling results were used for pollutant loading calculation, river water quality simulation, and pollution control strategies development. The electric conductivity was applied for the model calibration. Results show that the simulated results matched with the observed data very well. The calibrated WASP model was used for dissolved oxygen (DO), biochemical oxygen demand (BOD), and ammonia nitrogen (NH3-N) simulation. Results from the box-and-whisker plot analyses also verified that the established model is appropriate for the water quality modelling. Results from the water quality modelling show that the Minzu Bridge (Love River section) had a more significant impact on the Upstream of Love River water quality compared with the Other section. The highest content of BOD and NH3-N was in the Minzu Bridge. For economic reason and operation convenience, the river water treatment plant is better siting by the location of polluted stream as near as possible. Remedial strategies for the Love River water from short-term to long-term were developed. The completion of the Minzu Bridge section (oxidation ditch system, Smile Park) to remove 20% of the point source pollution (BOD ＆ NH3-N) can serve as a short-term goal while 40% of pollutant removal by oxidation ditch system may serve as a mid-term and long-term strategy. Through the analysis of Algae biotechnology it was found that Love River were collected from the upper, mid, and downstream sections have many intrinsic Algae and abundance of microflora. In addition, The total number of algae of the Minzu Bridge to Mingcheng Bridge shows that the total number of algae is 370,920 cell / L and 661,980 cell / L in April 2016. The amount of algae is enough to change the color of the water (brown). Thus, the water quality needs to be further investigated and the results can be used to develop the Love river basin management strategies.
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