http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 14.23Change: -0.05
R/$ = 10.74Change: -0.10
Au 1286.98 $/ozChange: -6.16
Pt 1425.00 $/ozChange: -3.00
 
 
Note: Search is limited to the most recent 250 articles. Set date range to access earlier articles.
Where? With... When?








Start
 
End
 
 
And must exclude these words...
Close Main Search
Close Main Login
My Profile News Alerts Newsletters Logout Close Main Profile
 
Agriculture   Automotive   Chemicals   Competition Policy   Construction   Defence   Economy   Electricity   Energy   Environment   ICT   Metals   Mining   Science and Technology   Services   Trade   Transport & Logistics   Water  
What's On Press Office Tenders Suppliers Directory Research Jobs Announcements Contact Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Nov 27, 2009

Gansbaai wastewater project incorporates techno innovation

Back
Engineering|Consulting|Industrial|PROJECT|Project Management|SSI|Water|The Netherlands|Energy|Environmental|Francis Gibbons|Water|Overstrand|Ground Breaking Nereda |Ground Breaking Nereda Technology|Nereda Technology|Wastewater Treatment
Engineering|Consulting|Industrial|PROJECT|Project Management|SSI|Water||Energy|Environmental|Water||
engineering|consulting-company|industrial|project|project-management|ssi|water-company|the-netherlands|energy|environmental|francis-gibbons|water|overstrand|ground-breaking-nereda|ground-breaking-nereda-technology|nereda-technology|wastewater-treatment
© Reuse this



Consulting engineering and project management company SSI, a subsidiary of the Nertherlands DHV Engineering group, has commissioned a demonstration-scale wastewater treatment plant featuring the Nereda technology, which it believes to be a breakthrough in wastewater treatment.

“Nereda is a revolutionary technology for the treatment of domestic and industrial wastewater,” SSI water sector GM Francis Gibbons tells Engineering News.

The technology was developed by DHV in partnership with the Delft University of Tech- nology, the Dutch Foundation for Applied Water Research and the Technology Foundation.

Gibbons notes that Nereda uses aerobic sludge granules as opposed to conventional activated sledge flocs. The granules settle much faster than conventional flocs and can operate at mixed liquor concentrations comparable with those of a membrane bio- reactor, while maintaining high settling velocities. The higher biomass concentration allows for a much smaller footprint compared with traditional activated sludge plants.

“The Gansbaai wastewater treatment works is a first-in-the-world project that is using the Nereda technology. We refer to the project as a demonstration-scale project. It was completed last year.”

Owing to the reduced footprint, the proposed plant was able to fit onto the existing site and allowance was made to increase the plant capacity by another 3 M∙/d on the same site of the town.

Gansbaai made use of the existing sewer- age works close to the municipal offices. One area is connected through a piped sys- tem; the other areas are serviced by tankers that deliver septic tank effluent to the works. The capacity of the old sewerage works was limited and the quality of the effluent did not conform to the standards set by the Depart- ment of Water and Environmental Affairs. Faced with increased development in the greater Gansbaai, the Overstrand municipality decided to upgrade the capacity of the old sewerage works to 2 M∙/d in the interim.

The existing site had very limited potential for conventional plant expansion, but was centrally located, whereas the intended new site would have been positioned outside the town where additional land would have had to be bought and an environmental-impact assessment conducted.

Nereda guarantees a 30% energy consumption saving.

“At Gansbaai, a 43% saving was achieved by using the technology, leaving the final project costs at R25-million. A capital cost saving of at least 20% can be expected, but varies from project to project,” says Gibbons.

The test results at Gansbaai revealed that a good-quality effluent had been produced, especially considering the variable nature of the sewage delivered to the works, as most of the effluent is carted by tanker from septic tanks.

Edited by: Martin Zhuwakinyu
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other News This Week News
The Built Environment unit at the Council for Scientific and Industrial Research (CSIR) has developed a cost-competitive ultrathin concrete pavement surface that, for the upgrading of unpaved roads to paved roads, is more durable than many other pavement alternatives...
The Southern African Large Telescope (SALT), based at Sutherland in the Karoo region in the Northern Cape province, is promising to become an important instrument for research into dark matter. "SALT is shaping up to be very important for answering questions about...
HENK SNYMAN TDM supports broader industrial activity that has a multiplier-effect on the potential to beneficiate raw materials in many industries
The South African tool, die and mouldmaking (TDM) industry is being revitalised to locally produce the tools, dies, moulds and fixtures required by the manufacturing sector. Local TDM capability is key to enable the manufacturing industry to remain competitive, says...
More
 
 
Latest News
A global transportation price index has ranked South Africa the cheapest overall for bus, trains and aeroplane travel for every 100 km out of 51 countries. Online platform GoEuro compared the average price a 100 km of rail, road or air movements between the most...
The processing of the Government Shareholder Management Bill, which was yet to be tabled before Parliament by the Department of Public Enterprises (DPE), would have to be sped up, Portfolio Committee on Public Enterprises chairperson Dipuo Letsatsi-Duba said on...
Gautrain bus drivers went on strike on Wednesday, forcing certain bus services to be suspended, the Bombela Concession Company said. "Please note that a wildcat strike by Gautrain bus drivers in Johannesburg has resulted in the suspension of bus services from Park,...
More
 
 
Recent Research Reports
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail network, the funding and maintenance of these respective networks, and the push to move...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
Real Economy Insight: Road and Rail 2014 (PDF Report)
This six-page brief covers key developments in the road and rail industries over the past 12 months, including details of South Africa’s road and rail network and prospects for both sectors.
 
 
 
 
 
This Week's Magazine
The Built Environment unit at the Council for Scientific and Industrial Research (CSIR) has developed a cost-competitive ultrathin concrete pavement surface that, for the upgrading of unpaved roads to paved roads, is more durable than many other pavement alternatives...
The Southern African Large Telescope (SALT), based at Sutherland in the Karoo region in the Northern Cape province, is promising to become an important instrument for research into dark matter. "SALT is shaping up to be very important for answering questions about...
HENK SNYMAN TDM supports broader industrial activity that has a multiplier-effect on the potential to beneficiate raw materials in many industries
The South African tool, die and mouldmaking (TDM) industry is being revitalised to locally produce the tools, dies, moulds and fixtures required by the manufacturing sector. Local TDM capability is key to enable the manufacturing industry to remain competitive, says...
Misfortune often finds its roots in the smallest of things. Such as a centimetre or two. Or is that in inch? Perhaps a foot? Swedish or Dutch? The French had reason to blush in May as it became apparent that national rail operator SNCF had ordered 2 000 trains that...
The repositioning of the Fibre Processing & Manufacturing Sector Education and Training Authority (FP&M Seta) and its business processes will ensure improved performance in reaching strategic targets and in providing customer service.
 
 
 
 
 
 
 
 
 
Alert Close
Embed Code Close
content
Research Reports Close
Research Reports are a product of the
Research Channel Africa. Reports can be bought individually or you can gain full access to all reports as part of a Research Channel Africa subscription.
Find Out More Buy Report
 
 
Close
Engineering News
Completely Re-Engineered
Experience it now. Click here
*website to launch in a few weeks