http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 16.67Change: -0.15
R/$ = 14.39Change: -0.04
Au 1295.27 $/ozChange: 1.38
Pt 1080.00 $/ozChange: -3.50
 
 
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 Letters About Us
 
 
 
RSS Feed
Article   Comments   Other News   Research   Magazine  
 
 
Nov 27, 2009

Gansbaai wastewater project incorporates techno innovation

Back
Consulting|Engineering|Industrial|Innovation|PROJECT|Project Management|SSI|Technology|Water|Energy|Environmental
Consulting|Engineering|Industrial|Innovation|PROJECT|Project Management|SSI|Technology|Water|Energy|Environmental
consulting-company|engineering|industrial|innovation|project|project-management|ssi|technology|water|energy|environmental



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
Creamer Media Senior Deputy Editor

To subscribe email subscriptions@creamermedia.co.za or click here
To advertise email advertising@creamermedia.co.za or click here
 
Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other News This Week News
The two spent-fuel pools at Eskom’s 1 800 MW Koeberg nuclear power station, in the Western Cape, will be full by 2018, increasing the urgency on the State-owned utility to begin pursuing alternative storage options. Koeberg has, over the past 32 years, accumulated a...
South Africa lacks the skills necessary to implement the government’s plan to build 9.6 GWe of new nuclear energy capacity, warns nuclear-qualified Quality Strategies International CEO David Crawford. “Apart from the concern about the affordability of the programme,...
DOROS HADJIZENONOS The 700-series devices provide network security monitoring, app control, URL filtering, VPN security, antivirus, antispam, antibot, and advanced intrusion prevention and detection functionality
Cybersecurity multinational Check Point has released its latest 700-series cybersecurity systems for small businesses, which draw on its international threat intelligence to provide up-to-date cybersecurity, says Check Point South Africa country manager Doros...
More
 
 
Latest News
Darryll Castle
Updated 1 hour ago The medium-term game plan of African cement producer PPC is to find new resources, which will probably require it to engage in some form of exploration close to where urban development is expected in Africa. Over time, the resources side of the business is expected...
Updated 1 hour 1 minute ago The Airlines Association of Southern Africa (AASA) believes that the swift resolution of the issues that led to the temporary grounding of South African State-owned regional airline SA Express show that the industry and the aviation regulator can work swiftly and...
Updated 1 hour 15 minutes ago Figures from the National Association of Automobile Manufacturers of South Africa show that 617 749 new vehicles were sold in South Africa in 2015, marking a decline of 4% on the sales recorded in 2014 and representing the second consecutive year of decline for this...
More
 
 
Recent Research Reports
Automotive 2016: A review of South Africa's automotive sector (PDF Report)
Creamer Media’s Automotive 2016 Report provides an overview of South Africa’s automotive industry over the past 12 months. The report provides insight into local demand and production, vehicle imports and exports, investment and competitiveness in the sector, as well...
Energy Roundup – April 2016 (PDF Report)
The April 2016 roundup covers activities across South Africa for March 2016 and includes details of a North Gauteng High Court Judge’s dismissal of a court application to postpone the 9.4% electricity tariff increase, which the National Energy Regulator of South...
Electricity 2016: A review of South Africa's electricity sector (PDF Report)
Creamer Media’s Electricity 2016 report provides an overview of South Africa’s electricity sector, focusing on State-owned power utility Eskom and independent power producers, electricity planning, transmission, distribution and the theft thereof, besides other issues.
Energy Roundup – March 2016 (PDF Report)
The March 2016 roundup covers activities across South Africa for February 2016 and includes details of the Department of Energy’s plans to announce the preferred bidders for the first tranche of the coal independent power producer procurement programme; the Council...
Steel 2016: A review of South Africa's steel sector (PDF Report)
Creamer Media’s Steel 2016 Report examines South Africa’s steel industry over the past 12 months. The report provides insight into the global steel market and and particularly into South South Africa’s steel sector, including production and consumption, main...
Construction 2016: A review of South Africa's construction industry (PDF Report)
Creamer Media’s Construction 2016 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; key participants; local demand; geographic diversification; corporate activity; black economic...
 
 
 
 
 
This Week's Magazine
The two spent-fuel pools at Eskom’s 1 800 MW Koeberg nuclear power station, in the Western Cape, will be full by 2018, increasing the urgency on the State-owned utility to begin pursuing alternative storage options. Koeberg has, over the past 32 years, accumulated a...
South Africa lacks the skills necessary to implement the government’s plan to build 9.6 GWe of new nuclear energy capacity, warns nuclear-qualified Quality Strategies International CEO David Crawford. “Apart from the concern about the affordability of the programme,...
DOROS HADJIZENONOS The 700-series devices provide network security monitoring, app control, URL filtering, VPN security, antivirus, antispam, antibot, and advanced intrusion prevention and detection functionality
Cybersecurity multinational Check Point has released its latest 700-series cybersecurity systems for small businesses, which draw on its international threat intelligence to provide up-to-date cybersecurity, says Check Point South Africa country manager Doros...
Daimler Trucks and Buses Southern Africa (DTBSA) saw a marked slip in new-vehicle sales in 2015 compared with 2014, with sales dropping from 5 897 units to 5 300 units. The decline came as the South African new truck and bus market declined from 31 558 units in 2014...
Group of 20 (G-20) economies threatened to penalise havens that don’t share information on their banking clients after the leak of the Panama Papers provoked a global uproar over tax evasion. The G-20 will consider “defensive measures” against financial centers and...
 
 
 
 
 
 
 
 
 
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
Subscribe Now for $149 Close
Subscribe Now for $149