EVALUATION OF THE EUTROPHICATION PHENOMENON IN THE SAGULING DAM WITH A DYNAMIC SYSTEM MODEL
The Saguling Reservoir accommodates various types of waste carried by the Citarum River and its tributaries. The decline in water quality in the Saguling Reservoir is caused by the presence of organic and inorganic materials that enter the reservoir. This study aims to evaluate the eutrophication...
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| Format: | Theses |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/64647 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The Saguling Reservoir accommodates various types of waste carried by the Citarum River
and its tributaries. The decline in water quality in the Saguling Reservoir is caused by the
presence of organic and inorganic materials that enter the reservoir. This study aims to
evaluate the eutrophication that occurred in the Saguling Reservoir by looking at the influence
of nutrients and biomass of Peridinium sp. The method used in this research is the analysis of
water quality, analysis of the load carrying capacity of water pollution which refers to tge
Minister of Environment Regulation No. 28 of 2009, and evaluation of the eutrophication
phenomenon using STELLA 9.0.2 software with a dynamic system approach. The use of
dynamic systems is closely related to the pattern of behavior levels generated by the system
over time. The results showed that the number of marine cages in the Saguling Reservoir had
exceeded its capacity and when referring to the Minister of Environment Regulation No. 28 of
2009, so now its trophic status has reached the hypereutrophic status. Based on the simulation,
the concentration of ammonia, nitrate, and phosphate nutrients is directly proportional to the
biomass of Peridinium sp. Peridinium sp biomass increased with increasing nutrient
concentration from 2011 to 2030. Ammonia concentration increased from 0,04 mg/L to 0,84
mg/L; nitrate concentration from 1,61 mg/L to 33,81 mg/L; and phosphate concentration from
0,02 mg/L to 0,48 mg/L. After carrying out the scenario of using an aerator, the concentration
of ammonia, nitrate, and phosphate nutrients decreased every year; and the harvesting of
phytoplankton can reduce nutrient concentration but still exceed the quality standard; and the
combination of the two scenarios can reduce the concentration of ammonia, nitrate, and
phosphate. This indicates that the addition of aeration and harvesting of phytoplankton in the
Saguling Reservoir is very efficient. However, the concentration of phosphate at the time of use
of the two scenarios still exceeds the quality standard of PP 22 2021 Class II so that further
management is needed. |
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