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Nowadays conventional and modern WWTPs must meet increasingly high requirements on their efficiency. Beside the cleaning performance, the energy costs and the additional operating costs steadily gain significance. There exist a lot of general measures that apply to all WWTPs leading to lower energy costs. However, these do not consider the characteristic features of a WWTP. And this is where the dynamic simulation comes in useful: an ideal solution, made to measure.
Recent scientific findings have shown that the operation of a WWTP can be optimised by dynamic simulation. As a result, the emission values as well as the operational costs like precipitant consumption, aeration energy and sludge volume are reduced significantly. The applied measures can vary even in the same process since they strongly depend on the characteristics of the canal network and the influent conditions.
LimnoTec’s experience in applying the dynamic simulation analysis at several plants confirm these findings. Depending on the WWTP, the effluent values of e.g. Ntotal,org can be reduced by up to 50%, the energy savings by up to 30% and the precipitant consumption by up to 60%. At a 20,000 PE wastewater treatment plant, this is equivalent to savings up to 20,000 EUR per year.
For every operator, the dynamic simulation of WWTPs is an investment that pays off already after a few years. The results are available within a few months after one or more detailed measurement campaigns at the WWTP and the collection of all important data took place.
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