Operational optimization of wastewater reuse integrated energy system

With the rush in global energy demand and the popularization of renewable energy utilization, the integrated energy system has been rapidly developed, and there have been diverse comprehensive energy resources, which includes wind energy, solar energy, sewage etc. In order to improve the comprehensive energy utilization efficiency of energy systems with sewage resources, this paper proposes an integrated energy system of wastewater reuse and an optimal operation model of it. Firstly, this paper proposes an integrated energy system operation control strategy based on sewage source heat pump and biogas trigeneration energy production. Secondly, the genetic algorithm model with the objective function of comprehensive energy utilization efficiency and economic operation cost is established. Finally, this paper adopts a sewage treatment system area as the simulation target to carry out the simulation analysis of wastewater reuse integrated energy system (WRIES) operation, and constructs an operation optimization scheduling scheme. Simulation results show that compared with no optimization, the operating cost of the system can be reduced more than 9%, and the renewable energy utilization rate can be increased more than 5%. After the thermoelectric ratio adjustment, the results of system operation optimization can be further improved. (C) 2020 Elsevier Ltd. All rights reserved.