One of the important parts of the wwtp Nijmegen is the digestion of sludge from both the wwtp Nijmegen and the other wwtp’s form the region. As a result, biogas and energy production have increased in recent years. As a result of the extra sludge breakdown in the fermentation, extra nutrients are discharged into the waterline. The current waterline was increasingly challenged to process this increase in nutrients, especially nitrogen.

As a solution to the increasing nitrogen concentration in the effluent, Logisticon was awarded the construction of a side stream treatment based on the DEMON ® TECHNOLOGY. The removal of nitrogen in this partial flow significantly reduces the internal load on the waterline, which has a positive effect on the energy balance of the wwtp.

The Rivierenland Water Board has found the right party in Logisticon to solve such a problem. In 2017 Logisticon started designing the installation in order to meet the customer’s wishes as optimally as possible. The installation went into operation in May last year and the warranty measurements show that in practice this installation functions according to expectations. Logisticon Water Treatment and Sweco will provide process technological and operational support for the coming year. Certainly in these times where nitrogen is high on the agenda, such a sustainability project is something that all parties involved can be proud of.