The management of odour nuisance and corrosion risks in relation to sewage pump stations, gravity sewers and special structures like rising main discharge manholes has received a lot of attention in recent years. This paper concerns the management of corrosion risk inside rising mains and the resulting odour nuisance and corrosion risks along the rising mains. The approach taken is to set out the major issues briefly, and then to provide a case study that describes how they were addressed strategically. The common rising main (CRM) chosen for the case study serves a community of 38,000 EP, and comprises six pump stations and 24km of pressure main constructed mainly from unduplicated MSCL (mild-steel cement-lined) and DICL (ductile-iron cement-lined) pipes.
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