Abstract
The Garang River functions as a flood controller and a source of raw water for drinking water. This river is divided into seven segments, and in the downstream segment VI there is intake of raw water for drinking water. The land use is dominated by built-in land, in the form of dense settlements and industrial estates. This study aims to evaluate the condition of the drainage system, both in terms of runoff and water quality, and apply the concept of LID to achieve a sustainable drainage system. The method used is the SWMM. Evaluations were carried out in three outlets. In existing conditions, channel capacity in general is still sufficient, while water quality does not meet effluent standard quality for observed parameters including TSS, BOD, COD, oil & fat parameters and Total coliform. The LID concept that are suitable are Bio retention cell, Permeable Pavement and Rooftop disconnection.The use of this type of LID is significant enough to reduce runoff by 77% at outlet 1, 98% at outlet 2 and 73% at outlet 3 and decrease in some parameters of water quality by 77% to 100%.
Highlights
To support the planning and implementation in the fields of energy, environment, epidemiology and information systems in response to the development of the industrial revolution 4.0, this study was made
The topic of this study discusses environmental management in urban areas that directly affects water quality, flooding, and in turn affects the level of health, safety and comfort of the community
A sustainable drainage system is needed that takes into account the sustainability of ecosystems that can reduce runoff and concentration of pollutants in water bodies
Summary
To support the planning and implementation in the fields of energy, environment, epidemiology and information systems in response to the development of the industrial revolution 4.0, this study was made. The topic of this study discusses environmental management in urban areas that directly affects water quality, flooding, and in turn affects the level of health, safety and comfort of the community. The planning of convensional drainage system often have not considered changes in runoff coefficients that have changed rapidly, and have not taken into account water quality problems. For this reason, a sustainable drainage system is needed that takes into account the sustainability of ecosystems that can reduce runoff and concentration of pollutants in water bodies
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