http://www.engineeringnews.co.za
  SEARCH
Login
R/€ = 13.69Change: 0.01
R/$ = 10.97Change: 0.05
Au 1199.37 $/ozChange: 1.21
Pt 1225.00 $/ozChange: 2.00
 
 
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  
 
 
May 04, 2012

Packaged plants can ensure long-term sewage treatment in remote areas

Back
Dublin|Africa|Bannow Africa|Bannow Exports MD Ted O’Morchoe|Design|Flow|Housing|Pipes|PROJECT|System|Systems|Water|Africa|Ireland|Maldives|Seychelles|South Africa|Activated Sludge Technologies|Flow|Local Subsidiary|Long-term Solution|Maintenance|Pipes|Plant Manufacturer|Short-term Solution|Solutions|Systems|Power|Water|Activated Sludge Technologies
|Africa|Design|Flow|Housing|Pipes|PROJECT|System|Systems|Water|Africa||Flow|Maintenance|Pipes|Solutions|Systems|Power|Water|
dublin|africa-company|bannow-africa|bannow-exports-md-ted-omorchoe|design|flow-company|housing|pipes|project|system|systems-company|water-company|africa|ireland|maldives|seychelles|south-africa|activated-sludge-technologies|flow-industry-term|local-subsidiary|longterm-solution|maintenance|pipes-industry-term|plant-manufacturer|shortterm-solution|solutions|systems|power|water|activated-sludge-technologies-technology
© Reuse this



Long-term sewage treatment for remote applications can be provided by instal- ling packaged sewage treatment plants that are easy to operate and robust, says Irish plant manufacturer Bannow Exports MD Ted O’Morchoe.

The ease of operation of packaged sewage treatment plants is critical for their common applications in remote places, such as island the resorts in the Seychelles and the Maldives, as well as in rural areas, such as the demonstration plant at Olwazini, in South Africa’s Cradle of Humankind, in Gauteng.

The modular plants enable easy expansion of existing systems to meet the scale of treatment demand.

“Packaged plants should be prefabricated, so that quality control is done in the factory and does not depend on work on site, where installation must be quick and simple.”

Bannow Exports, of which Bannow Africa is its local subsidiary, reports that its Blivet packaged sewage treatment plant, a hybrid of rotating biological contactor and activated sludge technologies, removes ammonia, nitrates and nitrites, phosphorus and nut- rients, with the option to design the system to enable effluent to be used for irrigation of crops.

Disinfection, should it be required, is done using ultraviolet disinfection or liquid or tablet chlorine dosing matched to the flow rate. The Blivet plants can also be monitored remotely.

“As soon as people get water into their homes, they will begin to produce sewage. We should use packaged sewage treatment plants to contain pollution before it becomes a problem.

“The plant can be applied as a short-term solution to bolster overloaded municipal sewage treatment plants, or as a sustainable, long-term solution in areas that need treatment capacity but are not connected to sewer- age pipes, or in remote locations where it is not economically viable to install large- scale municipal treatment plants,” he explains.

“Further, a single plant can be installed for up to 100 houses or can be deployed in series and in parallel to provide treatment for larger populations,” notes O’Morchoe.

The effluent flows into a primary settlement tank and then into the heart of the plant, which is its Aerotor rotating biological drum. As the drum rotates it lifts the effluent into its channels, effectively aerating it to promote bacteria and biomass growth, which absorb the nutrients.

Further, the system has low power consump-tion, owing to its design that uses the rotation of the drum to aerate the effluent, and can also be designed to use solar power sources.

“The Blivet has low operation requirements and naturally adjusts to changes in flow rate, with bacteria growth proportional to sewage inflows.”

Meanwhile, the system has a life span of 20 years in normal applications and is sustainable owing to its low requirements for electricity and maintenance.

A project in Ireland saw the company installing 22 Blivet units to provide temporary treatment for a housing development near Dublin, until the municipality could build a formal sewage treatment plant within five years. The Blivet plants have been in operation at these sites for almost ten years and the municipal plant will only be completed this year, he notes.

C

ommissioning such a plant takes a few months, and the plants are sustainable and an effective way for corporate companies or nongovernmental charities to boost local communities, he adds.

Bannow Africa provides standalone units and fully engineered solutions that can include more rigorous treatment, such as disinfection, depending on the application. The management of sludge from the plants is similar to other biological treatment systems, and the plant has three months of insludge storage. Sludge drying beds can be included to reduce the amount of sludge in remote locations, he concludes.

Edited by: Martin Zhuwakinyu
© Reuse this Comment Guidelines (150 word limit)
 
 
 
 
 
 
 
 
Other Environment News
Article contains comments
Signatories to the Climate Investment Funds’ (CIF’s) mandate last week agreed to invite a group of new pilot nations to come forward and develop Strategic Programs for Climate Resilience under its Pilot Program for Climate Resilience (PPCR). The African Development...
The story of the salvage of the Italian cruise liner Costa Concordia, which took place from May 2012 to July 2014 (the refloated ship was towed into Genoa harbour on July 27, and is now being scrapped) is well known in general outline, as is the fact that the Salvage...
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...
Article contains comments
More
 
 
Latest News
International Relations and Cooperation Minister Maite Nkoana-Mashabane
Updated 3 minutes ago South Africa needs to develop a broadly shared understanding of the concept of national interest, which International Relations and Cooperation Minister Maite Nkoana-Mashabane says should not be too “narrow in scope and overly economic in its focus”. The Minister was...
Auditor-General Kimi Makwetu
Updated 10 minutes ago More national and provincial departments, including their entities have received clean audits for the 2013/14 financial year, Auditor-General Kimi Makwetu said on Wednesday. The Auditor-General said this when briefing the media on the audit outcomes for national and...
Updated 16 minutes ago Eskom has asked its staff to consider voluntary retrenchment packages, a spokesman confirmed on Wednesday. "We can confirm that we have announced the process by which employees can apply for voluntary separation packages," spokesman Andrew Etzinger said.
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