A novel economic optimal control strategy from CITIES / DTU Compute & Krüger A/S suggests that the power consumption in wastewater treatment can be flexible since the water is treated in large tanks with long retention times where specialized aeration equipment is repeatedly switched on and off. Download for free the next few weeks!
By controlling these switching times with respect to nutrient concentrations, electricity consumption can be predicted and shifted in time and hence provide short-term demand-side flexibility.
The proposed principle is used to reduce the operating costs of a wastewater treatment plant by enabling the flexibility to distribute the aeration load to periods with less expensive power prices.
Highlights:
Significant cost savings for wastewater treatment by shifting power consumption
Favourable to exploit instantaneous price differences in multiple power markets
Optimal energy consumption of wastewater aeration using switching times
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