Monitoring nitrate concentrations in the denitrifying post-filtration unit of a municipal wastewater treatment plant

Shall we use hardware sensor measurements or soft-sensor estimates? Case study in a full-scale WWTP

“…Soft-sensors for estimating the NO 3 -N concentrations in the post-filtration unit of the Viikinm€ aki WWTP have been developed in our earlier work (Mulas et al, 2012;Corona et al, 2013). The motivation for designing the soft-sensors was that, according to the management of the plant, the on-line analysis of NO 3 -N concentrations in the filter cells is often disturbed by the frequent backwashes and, for this reason, the measurements are prone to potential unreliability.…”

“…One example of data derived soft-sensors for predicting the contents of a nitrogen compound in a municipal WWTP has been presented in our earlier works (Mulas et al, 2012;Corona et al, 2013). Specifically, we proposed an array of soft-sensors to estimate the nitrate-nitrogen (NO 3 -N) concentrations in the denitrifying post-filtration unit in the Viikinm€ aki WWTP located in Helsinki (Finland).…”

Measuring and Evaluating the Performance of a Wastewater Treatment Plant

“…Nowadays, wastewater treatment plants are facing new challenges to comply with tighter wastewater discharge limits [1]. The scarcity of freshwater resources is not a problem in Egypt only, but has become a global problem which impose itself in the twenty-first century.…”

Performance evaluation of the main units of a refinery wastewater treatment plant – A case study

“…Thus, these industrial wastewaters are 19 often toxic and a major source of environmental health hazard, 20 requiring an adequate treatment before being discharged into 21 water bodies. 22 Nowadays, wastewater treatment plants are facing new 23 challenges to comply with tighter wastewater discharge limits 24 [5]. New regulations to ensure water resources protection originate 25 an increasing complexity of WWTPs through the integration of 26 new and more efficient technologies [6].…”