#TITLE_ALTERNATIVE#

• Main Author: RAMOS M. (NIM 15304049), YOVITA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/11654
• Institution: Institut Teknologi Bandung

Sea is one of natural resources, which has potential to provide human needs. However, due to resident growth and there are many industries have activities, the sea is started to be polluted and negative impact to people and environment is arisen. One of industry, which has potential to pollute Indonesian sea, is oil and gas production in Natuna Sea. Produced water, which is produced by oil and gas production process in PT. X, may contain few contaminant constituents including phenol, oil and grease. Distribution of phenol and oil and grease is done using MuQual3D software, which includes hydrodynamic model and qualitative water model. Simulation of phenol distribution and oil and grease from produced water is done for a year for each discharge location within two layers of sea water layer which are mean sea water layer and sea bottom layer. Produced water spreading the depths of 7 m and 75 m such as 7.5-74 ppt, phenol concentration spreading such as 0.129-0.312 ug/L, where as oil and grease concentration such as range between 3.357-8.356 ug/L. These spreading simulations show that produced water discharge have complied the sea water quality standard for aquatic biota. From laboratory results of aquatic biota for phytoplankton and zooplankton, are indicated that there is occurrence of ecological pressure within the aquatic area, but still in moderate and stable condition, which means that it could be changed according to the surrounding environment. Where as, from Chanos chanos toxicological model simulation about 10.12-11.2% of study area has impacted. For balancing the ecosystem of Natuna sea, produced water discharge management and other research for aquatic biota in study area are needed. <br />