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<p>One of petrochemical industries in East Java, faces serious sedimentation problems in its seawater intake (SWI) system, with an annual accumulation rate of 50–60&#xa0;cm. Such rapid deposition threatens to block the intake, disrupt the cooling water supply, and increase dredging costs. This study aimed to analyze sedimentation patterns, design possible sediment control structures, and evaluate their performance using numerical modeling. The approach combined secondary and measurement data, hydrodynamic and spectral wave modeling, sediment transport simulations, sediment budget analysis, and shoreline change assessment. A total of eleven scenarios were simulated: the existing condition and ten alternative sediment control designs. Results under existing conditions show that sedimentation around the SWI basin averaged about 50&#xa0;cm per year, with the highest accumulation near the pump house. The inclusion of sediment control structures substantially altered local hydrodynamics and reduced average bed level change (BLC) within the SWI basin. Most designs were able to lower the average BLC to below 0.05&#xa0;m/year, though some scenarios generated localized erosion that could pose risks to intake stability. Among the tested designs, configurations with groynes on both sides of the SWI mouth performed best in reducing sediment inflow. The findings provide useful insights for planning preventive sediment control at SWI facilities. However, the results are based on numerical simulations with several assumptions and still need further validation, bathymetric monitoring, and physical modeling. This study offers a framework for preventive sediment control design at SWI facilities. It can bridge academic research and practical engineering applications by providing a ready-to-implement solution. Unlike previous studies, this research applies sediment transport modeling to optimize preventive control designs specifically for SWI systems. These results provide a reproducible model for lowering sedimentation in comparable coastal areas, which has immediate industrial benefits.</p>

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Effect of sediment control design on sedimentation rate at seawater intake

  • 期刊论文

  • 发表日期：

    2025年12月26日

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  • Mardi Wibowo,
  • Hanah Khoirunnisa,
  • Wahyu Hendriyono,
  • Dinar Catur Istiyanto,
  • Reno Arief Rachman,
  • ABagyo Widagdo,
  • Hamzah Haru Radityo Suharyanto

摘要

One of petrochemical industries in East Java, faces serious sedimentation problems in its seawater intake (SWI) system, with an annual accumulation rate of 50–60 cm. Such rapid deposition threatens to block the intake, disrupt the cooling water supply, and increase dredging costs. This study aimed to analyze sedimentation patterns, design possible sediment control structures, and evaluate their performance using numerical modeling. The approach combined secondary and measurement data, hydrodynamic and spectral wave modeling, sediment transport simulations, sediment budget analysis, and shoreline change assessment. A total of eleven scenarios were simulated: the existing condition and ten alternative sediment control designs. Results under existing conditions show that sedimentation around the SWI basin averaged about 50 cm per year, with the highest accumulation near the pump house. The inclusion of sediment control structures substantially altered local hydrodynamics and reduced average bed level change (BLC) within the SWI basin. Most designs were able to lower the average BLC to below 0.05 m/year, though some scenarios generated localized erosion that could pose risks to intake stability. Among the tested designs, configurations with groynes on both sides of the SWI mouth performed best in reducing sediment inflow. The findings provide useful insights for planning preventive sediment control at SWI facilities. However, the results are based on numerical simulations with several assumptions and still need further validation, bathymetric monitoring, and physical modeling. This study offers a framework for preventive sediment control design at SWI facilities. It can bridge academic research and practical engineering applications by providing a ready-to-implement solution. Unlike previous studies, this research applies sediment transport modeling to optimize preventive control designs specifically for SWI systems. These results provide a reproducible model for lowering sedimentation in comparable coastal areas, which has immediate industrial benefits.