MODELING THE SPATIAL CONCENTRATION DISTRIBUTION OF ENVIRONMENTAL PARAMETERS AND TOTAL SUSPENDED SEDIMENT IN DIATAS LAKE, WESTERN SUMATRA, INDONESIA

Authors

  • Andojo Wurjanto
  • Harman Ajiwibowo

Keywords:

Hydrodynamic modeling, BOD, Sulphide, COD, DO, Phosphate, TSS, Diatas Lake

Abstract

Diatas Lake is one of the five lakes in the Province of West Sumatra, that requires special attention
for its sustainability. A numerical hydrodynamic model of Diatas Lake is presented to observe the biochemical
oxygen demand (BOD), sulphide, chemical oxygen demand (COD), dissolved oxygen (DO), phosphate and
total suspended sediment (TSS). The model used the surface-water modeling system (SMS), developed by the
US Army Corps of Engineers. Field data acquisition, such as bathymetry, water level, and lake current velocity
are carried out. The water samples are also collected. The model validation shows good agreement between
field and model data. The water quality model is used to simulate the distribution of BOD, sulphide, COD,
DO, phosphate and TSS concentration for one year. At the end of the simulated year, the BOD, COD, DO,
phosphate and TSS concentration are still within a safe range, in accordance with the environmental
government regulation. However, the sulphide concentration exceeds the safe regulatory range. For long-term
environmental lake conservation, the use of fertilizer should be regulated and enforced.

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Published

2019-05-10

How to Cite

Andojo Wurjanto, & Harman Ajiwibowo. (2019). MODELING THE SPATIAL CONCENTRATION DISTRIBUTION OF ENVIRONMENTAL PARAMETERS AND TOTAL SUSPENDED SEDIMENT IN DIATAS LAKE, WESTERN SUMATRA, INDONESIA . GEOMATE Journal, 17(63), 288–296. Retrieved from https://geomatejournal.com/geomate/article/view/2533

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