http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 13.71Change: -0.01
R/$ = 10.96Change: 0.06
Au 1198.46 $/ozChange: 0.30
Pt 1229.50 $/ozChange: 6.50
 
 
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 Water News
Professor John Briscoe receiving the 2014 Stockholm Water Prize from King Carl XVI Gustaf
World-renowned South African water engineer and academic Professor John Briscoe, who was the 2014 recipient of the Stockholm Water Prize, also known as the ‘Nobel prize for water’, has died at the age of 66. Following a two-and-a-half-year battle with cancer, he...
Nearly two-billion people use water contaminated by faeces, posing a global health risk despite-billions of dollars spent on sanitation, said a report published on Wednesday. One in seven people, mostly poor and living in rural areas, still defecates in the open,...
Niger has secured 100 billion CFA francs ($190.39 million) in financing needed to build a dam which is expected to make the country self-sufficient in power and boost agricultural production, the government said. The 130 megawatt Kandadji hydroelectric project, 180...
More
 
 
Latest News
Updated 2 hours 13 minutes ago A Spoor & Fisher partner on Wednesday called on the Department of Trade and Industry (DTI) to finalise its proposed policy for Intellectual Property (IP). The policy, which had not been drafted in consultation with IP law experts, was published in September 2013,...
Auditor-General Kimi Makwetu
Updated 2 hours 23 minutes ago Auditor-General Kimi Makwetu has called on all government leaders to play a crucial role in ensuring that government departments and entities improve their audit outcomes. He has raised concerns over irregular expenditure, non-compliance with legislation, auditees...
Updated 2 hours 39 minutes ago The Somalia Stock Exchange expects seven companies in the telecoms, financial services and transport sectors to list their shares when the bourse is set up in 2015, its founder said. Somalia's economy is slowly recovering from more than two decades of conflict,...
More
 
 
Recent Research Reports
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
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 road...
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.
 
 
 
 
 
This Week's Magazine
JSE-listed real estate investment trust (REIT) Rebosis Property Fund achieved a distribution growth of 8.1% to 99.45c per linked unit in the financial year ended August 31, despite volatile market conditions.
JAMES ROBERTS The MOM incubator was designed to help babies in developing nations who were dying in conflict-struck nations or who do not receive hospital care
A low-cost, inflatable incubator won this year’s international James Dyson design award, which aims to encourage and inspire the next generation of design engineers.
The World Bank released its ‘Doing Business 2015: Going Beyond Efficiency’ report last month and ranked South Africa 43 out of 189 global economies for its ease of doing business, with Singapore topping the rankings.
Air Products South Africa officially launched its R300-million Eastern Cape air- separation unit (ASU), at its new manufacturing facility in the Coega Industrial Development Zone (IDZ), earlier this month. It is the second facility that Air Products launched in South...
BMW South Africa (SA) has signed a power purchasing agreement with energy company Bio2Watt. The offtake partnership will bring renewable energy to the carmaker’s Rosslyn plant, north of Pretoria.
 
 
 
 
 
 
 
 
 
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