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CONFERENCE: AWA NQ Regional Water 2010

Winner of 'Best Paper'

ABSTRACT:
Septicity is the scourge of the infrastructure asset owner/manager causing odour and corrosion throughout wastewater networks. The infrastructure asset owner/manager is faced with urban sprawl and the drive for fewer and larger treatment plants creating large pipe networks, and in particular, longer rising mains exacerbating retention times and septicity potential. In addition, the growth and changing nature of seasonal coastal communities with old infrastructure into established urban areas and the associated problems of high saline intrusion with increasing organic load provides ideal conditions for septicity. This is combined with an increasingly less tolerant public that will readily register odour nuisance complaints and demand action.

There are many established methods available to the infrastructure asset owner/manager ranging from preventing the cause of septicity by provision of oxygen (in various forms) to treating the symptoms (odour and corrosion control).

There is also a range of products offered by the Septicity Salesman promising instant results from a can or spray.

This paper explores:
- Methods for modelling septicity potential in new and existing systems
- The range of methods and products available, including seasonal treatment technologies
- How those methods and products work
- What are appropriate applications for each method and product
- How much those methods and procedures cost
- What can be believed from a man in white shoes
- A range of case studies

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