TY - JOUR
T1 - Statistical modelling of Fat, Oil and Grease (FOG) deposits in wastewater pump sumps
AU - Nieuwenhuis, Eva
AU - Post, Johan
AU - Duinmeijer, Alex
AU - Langeveld, Jeroen
AU - Clemens, François
PY - 2018/5/15
Y1 - 2018/5/15
N2 - The accumulation of FOG (Fat, Oil and Grease) deposits in sewer pumping stations results in an increase in maintenance costs, malfunctioning of pumps and, a potential increase of wastewater spills in receiving open water bodies. It is thought that a variety of parameters (e.g. geometry of the pump sump, pump operation, socioeconomic parameters of the catchment) influences the built-up of FOG. Based on a database containing data of 126 pumping stations located in five Dutch municipalities a statistical model was built. It is shown that 3 parameters are most significant in explaining the occurrence of FOG deposits: mean income of the population in a catchment, the amount of energy (kinetic and potential) per m3 per day and the density of restaurants, bars and hotels in a catchment. Further it is shown that there are significant differences between municipalities that can be traced back to the local ‘design paradigm’. For example, in Amsterdam, the design philosophy of discharging in the pump sump under the water surface (and hence maintaining a low level of turbulence in the pump sump) results in an increase of the probability of the formation of FOG.
AB - The accumulation of FOG (Fat, Oil and Grease) deposits in sewer pumping stations results in an increase in maintenance costs, malfunctioning of pumps and, a potential increase of wastewater spills in receiving open water bodies. It is thought that a variety of parameters (e.g. geometry of the pump sump, pump operation, socioeconomic parameters of the catchment) influences the built-up of FOG. Based on a database containing data of 126 pumping stations located in five Dutch municipalities a statistical model was built. It is shown that 3 parameters are most significant in explaining the occurrence of FOG deposits: mean income of the population in a catchment, the amount of energy (kinetic and potential) per m3 per day and the density of restaurants, bars and hotels in a catchment. Further it is shown that there are significant differences between municipalities that can be traced back to the local ‘design paradigm’. For example, in Amsterdam, the design philosophy of discharging in the pump sump under the water surface (and hence maintaining a low level of turbulence in the pump sump) results in an increase of the probability of the formation of FOG.
KW - Fat Oil and Grease (FOG) deposits
KW - Generalized linear mixed modelling
KW - Pumping station
KW - Sewer system
UR - http://www.scopus.com/inward/record.url?scp=85042268466&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:f8a4ff13-2e24-442d-9479-30ccf641a55e
U2 - 10.1016/j.watres.2018.02.026
DO - 10.1016/j.watres.2018.02.026
M3 - Article
AN - SCOPUS:85042268466
SN - 0043-1354
VL - 135
SP - 155
EP - 167
JO - Water Research
JF - Water Research
ER -