Latest Issue
Study on Mechanical Structure Design for Plug-and-play Wheel Mobile Robot
Published: December 31,2023PI Controller for Velocity Controller Design based on Lumped Parameter Estimation: Simulation and Experiment
Published: December 31,2023Attitude Estimation by using Unscented Kalman Filter with Constraint State
Published: December 31,2023Characterization Study of Cambodian Natural Rubber and Clay Composites for Shock Absorption Floor Mat
Published: December 31,2023Selection of Observed Gridded Rainfall Data for different Analysis Purposes in Cambodia
Published: December 31,2023An Empirical Investigation of Gold Price Forecasting Using ARIMA Compare with LSTM Model
Published: December 31,2023Prediction of California Bearing Ratio with Soil Properties of Road Subgrade Materials in Cambodia
Published: December 31,2023Non-intrusive Load Monitoring Classification Based on Multi-Scale Electrical Appliance Load Signature
Published: December 31,2023Development of Control Framework Based on ROS Platform for a 3-Axis Gimbal
Published: December 31,2023Efficiency of Low Impact Development on Urban Stormwater in Phnom Penh Capital of Cambodia
-
1. Faculty of Hydrology and Water Resources Engineering, Institute of Technology of Cambodia, Russian Federation Blvd., P.O. Box 86, Phnom Penh, Cambodia
Received: March 15,2022 / Revised: Accepted: November 15,2022 / Published: June 30,2023
Cambodia is at an early stage of development, with 21% of people presently living in cities. Phnom Penh, the capital and largest city of Cambodia, is under urbanization pressure with a population of 2.1 million and the annual growth rate of 3.2% in 2019. In this regard, aging infrastructure needs an upgrade or replacement with a new design considering a percentage, as high as possible, of permeable surfaces in urban areas. Low Impact Development (LID), including green infrastructure, should be taken into account in planning and design approaches to mitigate land development impacts on the environment. This study aims to evaluate the efficiency of LID scenarios on surface runoff reduction, peak flow reduction, and pollutant removal under rainfall patterns using PCSWMM model in Boeng Trabek sewerage system, Phnom Penh. Flow monitoring and water quality sampling during three rainfall events were conducted in a main conduit for testing model performance. Six types of LIDs (Infiltration trenches, bioretention, porous pavements, rain garden, green roof, and rain barrels) were implemented in an applicable proportion of existing sub-catchments. For every selected rainfall event, LIDs could reduce in average 48% of surface runoff, 35% of peak flow and increase infiltration rate to 90%. For water quality (COD, NO3, PO4, and TSS), the average sub-catchment’s washoff removal and outlet’s total pollutant removal is 55%. In summary, the implementation of LIDs has a significant impact on runoff reduction, peak flow reduction, and pollutant removal. The results provide concrete evidence for relevant stakeholders to consider Low Impact Development technique for sustainable development and to achieve smart cities.