Selective withdrawal optimization in river-reservoir systems; trade-offs between maximum allowable receiving waste load and water quality criteria enhancement.
In this paper, a new systematic approach is designed to maximize the demand coverage and receiving waste load by river-reservoir systems while enhancing water quality criteria. The approach intends to control the reservoir eutrophication while developing a trade-off between the maximum receiving load and shortage on demand coverage. To simulate the system, a hybrid process-based and data-driven model is tailored. Initially, the two-dimensional hydrodynamics and water quality simulation model (CE-QUAL-W2) is linked with an effective single and/or multiple optimization algorithms (PSO) to evaluate the proposed scenarios. To increase the computational efficiencies, the simulation model is substituted with a surrogate model (ANN) in an adaptive-dynamically refined routine. The proposed method is illustrated by a case study in Iran, namely, Karkheh River Reservoir, for 180-monthly periods. The results showed the applicability of the methodology especially to solve high-dimensional multi-period complex water resource optimization problems. Also, the results demonstrated that eutrophication could be reduced under the optimal inflow phosphate control and reservoir operation, regulating the total phosphorous concentration in the reservoir.
Water Resource Management Engineering, School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran. f_masoumi@iust.ac.ir.
Fariborz
F
Masoumi
Department of Civil Engineering and Center of Excellence for Enviro-Hydroinformatics Research, Iran University of Science and Technology, Tehran, Iran.
Abbas
A
Afshar
Policy Making and Water allocation Section, Ministry of Energy of Iran, Tehran, Iran.
Sedigheh Torabi
ST
Palatkaleh
D000465:Algorithms; D004784:Environmental Monitoring; D005068:Eutrophication; D057446:Hydrodynamics; D007492:Iran; D008962:Models, Theoretical; D010758:Phosphorus / Q000032:analysis; D045483:Rivers / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods* / Q000592:standards / Q000706:statistics & numerical data; D060753:Water Quality / Q000592:standards*; D062066:Water Resources; D014881:Water Supply
D010758:Phosphorus
CE-QUAL-W2; Eutrophication; Flow control; Reservoir operation; Surrogate model