News & Opinion

Garbage in, garbage out?

There has been a lot of publicity lately regarding sludge. Whether it is the energy we produce from it, how we dispose of it, recycle it or just handle it, it is - rightly - a subject of...

15 August 2016

Technical paper

A giant cost lurking in aeration basins

The energy consumed by bubble aeration systems varies significantly based on a number of plant parameters. A few of the factors affecting the efficiency are: aeration tank depth and shape, type of...

15 August 2016

White paper

Embedding whole life costing in the water industry

How can the water industry optimise process performance and minimise cost? In the management of water and wastewater assets, embedding Whole Life Costing (WLC) principles in everything from...

22 July 2016

Case study
Warren County WWTP, Ohio - VLR 1 full of grit

Defeating the Warren County "grit monster"

Few wastewater treatment plants (WWTPs) get to experience the disaster of what actually happens if a plant has absolutely no grit removal in operation at the headworks. At Warren County, in Ohio,...

16 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
Image of two disconnected water pipes

The Whole Life Disconnect

Is the UK water industry making sufficient progress towards its goal of embedding Whole Life Costing into its procurement, contracting and operating processes? As I've written before, in order to...

21 April 2016

White paper

How to assess - and cut - the cost of grit

Every operator knows that grit is seriously bad for treatment plant operation and maintenance – but just how bad is it?  Times are changing, and greater focus on whole-life asset management and...

13 April 2016

News & Opinion

The Cost Of Grit - Calculating Savings

While wastewater treatment plant owners and operators may understand that grit causes damage, reduces plant effectiveness and increases maintenance and repair costs, many still find it difficult...

21 March 2016

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