Month: September 1998

Special feature: laboratory analysis

As companies become increasingly aware of the impact of contaminated land and groundwater on their corporate liability, the demand for quality assured laboratory services, effective remediation contracting and accurate consultancy advice becomes more acute.

Low footprint effluent treatment

The design of Singapore's Kranji STW provides the solution to many of the future challenges facing urban planners - as the demand for land for residential and commercial development increases, consultants and contractors can no longer assume that there will be large open areas to provide buffer zones for odours, and space for conventional treatment facilities. David Fullerton and James Currie of Binnie Black & Veatch report on the approach taken at Kranji where new primary settlement tanks, aeration tanks and final clarifiers occupy a footprint approximately a third of that of the existing activated sludge plant.

NY town chooses the FAST option

After receiving four state discharge violation notices following rainstorms, the town of Dexter decided to incorporate Smith & Loveless' FAST® system into its WwTP writes James A.Bell, Vice President of Technical Services for Smith and Loveless.

Single reactor activated sludge system

Graeme Anderson, Business Development Manager for Environmental Solutions International, describes the BNR activated sludge system, recently installed in Queensland's South Caboolture WwTP.

Taweelah B plant takes shape

Belgian group Tractebel Energy Engineering has completed performance monitoring at the halfway stage of the two-year guarantee period of the Taweelah B power generation and desalination project in Abu Dhabi. Alan George reports from Brussels.

Living with floods: a change of strategy in The Netherlands

Frans Klijn and Jos Dijkman of WL/Delft Hydraulics describe the Dutch government's 'room for rivers' policy which aims to prevent flooding by 'building with nature.'

Infiltration insight

Sef Philips of the NV Waterleidingmaatschappij Oost-Brabant (WOB), Ron van Megen and Francois van Ekkendonk (both of DHV Water) report on the Project Infiltration Maaskant (PIM) - a large scale water supply project which uses infiltration as a surface water treatment technique.

Sludge treatment and handling scheme

Sludge production in the South West Water region is predicted to rise from 25,000 tonnes dry solids to 48,000 tonnes dry solids by 2011. Stephen Roberts, project director for Oscar Faber, describes South West Water's new sludge treatment and handling facility.

Burning and burying – dealing with sludge

Sludge treatment and disposal has recently been a common discussion subject especially with only three months before the disposal of sludge to sea is banned and recent talks with retailers on what treatment is safe. Gary Wilson examines some of the issues concerning sludge treatment and disposal and what the industry is doing to deal with them.

A biological solution to odour control

There are many options available for removing odours from gas streams before discharge and in this article Chris Smith from Bord na Mona discusses the biological techniques available.

Septicity in sewage and sludge

The causes of septicity and odour generation in sewers and sludge handling are discussed in this article by Arthur G Boon, technical director of Hyder Environmental.

Mine drainage and landfill leachate treatment

James Robinson of Kennedy & Donkin reports on how wetland and algal processes can be used to treat mine drainage and landfill leachate.

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