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

Case study
Niagara County Waste Water Treatment Plant

Grit removal helps Niagara aeration process breathe again

Introduction Grit composition at the Niagara County Waste Water Treatment Plant (WWTP) in New York State is characterized by very fine, slow-settling particles. Undetected for eight years, it was...

13 June 2016

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

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

Case study
Chart showing the typical cost to a wastewater treatment plant incurred per year due to grit missed by an aerated grit basin

Calculating the Cost Of Grit - Aerated Grit Basin

As much as 60% of grit is being missed Research conducted by Hydro International suggests that, on average, 60% of all grit is being missed by conventional grit removal systems. This grit passes...

29 January 2016

Case study

Protecting Oil Boom City from Wastewater Grit Damage - Bismarck, North Dakota

Rapid population growth pressures have seen extensive investment in public utility services in the City of Bismarck, North Dakota’s state capital, including expansion and updating its waste water...

12 January 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

Case study
Grand Island, Nebraska WWTP refurbishment project

Low maintenance and built-in redundancy - Grand Island, Nebraska

As a critical part of a $21.5 million upgrade to its wastewater treatment facilities, the City of Grand Island, Nebraska, has invested in an advanced grit removal system for high-performance grit...

16 December 2015

Get access to restricted resource

Please provide us with your name and email address in order to get access to this resource.