#TITLE_ALTERNATIVE#

• Main Author: NOVIA, FANNY
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/27145
• Institution: Institut Teknologi Bandung

<p align="justify">The utilisation of Cirata Reservoir for fish culture using fish cage is tended to be exessive causing dissolved oxygen depletion in reservoir. In this study, interaction between dissolved oxygen and its affecting components in the system are defined using dynamic modeling to understand dissolved oxygen behaviour. Dissolved oxygen was modeled with some components namely reaeration, photosynthesis, inflow, number of fish cage and amount of fish feed. Calibrated coefficients in this model are decay coefficient (K_d), nitrification coefficient (K_n), spesific sediment respiration rate (K_s), maximum rate of photosyntesis oxygen production (pm) and fractional duration of daylight (f). The calibrated value of each coefficient are 0.1 day^-1, 0.28 day^-1, 0.65 day^-1, 13.5 mg/L and 0.38. Model results show that the number of fish cage is the most affecting component of dissolved oxygen, whereas BOD concentration of inflow and amount of fish feed have no significant effect to dissolved oxygen concentration in reservoir. The best increasing of dissolved oxygen is showed when there is no fish cage in reservoir. So it can be concluded that decreasing number of fish cage in reservoir is the best solution to solve the depletion of dissolved oxygen problem in reservoir<p align="justify">