News & Opinion

The ten steps to totex

Finding solutions that can repair the disconnects between capital expenditure (capex) and operational expenditure (opex) and between operators’ intentions and the reality of running a wastewater...

8 June 2016

News & Opinion

Grit removal - a totex opportunity

A good model by which the water industry can test the total expenditure (totex) model is the process of grit removal in wastewater treatment. By removing more, and finer, grit at the inlet works,...

31 May 2016

News & Opinion

The Cost Of Grit - Q&A with Keith Hutchings

Q. Is grit a significant factor in the cost of running a Wastewater Treatment Plant (WWTP)? If so, how? A. The abrasive nature of grit has long been recognised as a major factor causing wear and...

22 December 2015

News & Opinion
A typical aerated grit basin

Intermittent operation - an irresistible attraction?

Operating wastewater treatment plant processes or equipment intermittently offers the irresistible attraction of reduced energy costs. But take the practice too far, or in the wrong circumstances,...

2 December 2015

News & Opinion
Teaser image

Climate: the effect on grit

Grit removal is important to any wastewater treatment plant, as the cost of grit that accumulates in downstream systems is significant. But climatic factors may place an additional load on the...

16 November 2015

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