The distribution pattern of TDS at three river locations in segment Cimahi-Northern Bandung and its estimated sources

• Main Author: ADITYA NIM : 22715303, SRI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/31043
• Institution: Institut Teknologi Bandung

Many processes can influence river water and groundwater to its current form. Daily variation of water quality data can be analyzed to understand such processes. <br /> <br /> This research mainly analyzed time series data of TDS from river water to understand the processes. We suspect that local drainage has a strong influence to the <br /> <br /> increasing values of TDS in the river water. We collected the data from March to November 2017 at three locations (from north to south): S. Ciawitali located at <br /> <br /> Curug Panganten (CP) and at Grand Royal Pancanaka (GRP), and S. Cibeureum located at Pondok Hijau Indah (PHI). At each locations we measured air temperature, river water temperature, and TDS. The measurements were conducted four times/day, 3 days/week in eight months. To support our claims, we also analyzed 310 water quality dataset that were available to classify the samples. We used open source applications, R, to produce the calculation and the plots. From the three locations, we find that TDs values on CP and PHI show a cyclic weekly pattern, <br /> <br /> with the values from PHI are averagely 20% higher than values from CP at given period. We don’t find the same pattern at GRP. The values from that location show <br /> <br /> a random pattern. Interestingly, we find an increasing trend from June to July. We argue that the cyclic pattern at CP and PHI are brought by many drainage outlets in the river bank. Such drainage collects domestic waste from housings and nearby accommodations (hotels) and tourist objects. Both locations are known as part of tourist object area at northern Bandung. GRP does not show the same situation because the TDS most likely only from the nearby GRP housing. The observation <br /> <br /> site is located at a man made channel that connect two natural channel through GRP housing complex. We argue that the TDS values at the channel capture a closed <br /> <br /> system drainage, compare to the open system at CP and PHI. Based on the multivariable analysis, we also see a close interaction between groundwater and river <br /> <br /> water at various places in Bandung area. This phenomenon should add our understanding on the patterns of TDS value. Such close interactions between groundwater <br /> <br /> and river water, should be the focus of the Bandung authorities. In this such close interactions, the contamination present in the river environment could come both from the river and the groundwater system. Both water have the same chance to send out man-made pollution in the environment.