All options that can contribute to South Africa’s water supply should be considered but conventional desalination plants may be too energy intensive – exacerbating another chronic problem in South Africa – electricity supply shortfalls. The cost of water to households and businesses will rise exponentially in the near future. Rainwater harvesting may offer a partial or even a complete solution to rising water tariffs and municipal water outages – rain water tanks on a property also increase market value and ensure emergency water supplies are always available.
The eThekwini/Durban municipality may become the first in the country to build a large-scale seawater desalination plant, the water affairs department said on Wednesday.
“We are quite advanced in investigating [desalination] options in eThekweni,” the department’s acting director general Trevor Balzer told reporters in Pretoria.
He was responding to a question about the newly-released Second National Water Resources Strategy approved by Cabinet last week.
On assuring future supply, the document states that “the desalination of seawater, on a large scale, is imminent”.
Balzer said details, including building costs, designs, and timelines, were not immediately available. However a feasibility study for such a desalination plant had been completed by State-owned agency Umgeni Water.
“In fact, Umgeni Water… has completed a feasibility study around the options for a supplementary water supply in eThekweni using desalination as that option.”
Balzer said the City of Cape Town was also looking at large-scale desalination to augment its water supply.
While several coastal towns around South Africa – including Sedgefield and Mossel Bay in the Southern Cape, and the West Coast town of Bitterfontein – had built small plants, no large-scale desalination operations had been built to date.
One of the reasons is they consume a lot of energy.
Speaking at the briefing, Water Affairs Minister Edna Molewa warned on the cost of desalination.
“Desalination is a very expensive option,” she said.
However, her department was not ruling it out, and research was being done on how to bring down the cost.
According to the strategy: “The cost of water at the coast will, over the long-term, increase and approach the cost of desalination of seawater.”
According to the document water requirements in the KwaZulu-Natal coastal metropolitan area already exceed the available supply by 65-million cubic metres a year.
Source: Engineering News
JoJo’s superior polyethylene plastic water tanks and steel water tank stands make JoJo Tanks the leaders in plastic water tank technology and the quality, affordability and 5-year guarantee on these water tanks make JoJo products one of the best choices in South Africa. *All JoJo Tanks polyethylene tanks and products now carry a 8 year warranty (on tanks purchased on or after 1 July 2013)* JoJo’s water tanks and chemical tanks come standard with a number of features that are often lacking on cheaper/inferior plastic tanks made by other companies in South Africa.
We are authorised JoJo Tanks dealers in South Africa and dispatch orders directly from JoJo Tank depots to save on transport costs. Full range of JoJo Tanks products and JoJo water tanks for sale. CONTACT US for a quote on the right JoJo water tank or other JoJo product for you. Special discounts are available on multiple orders of chemical tanks and water tanks and to our commercial and government customers. We can usually delivery tanks and tank stands free of charge to business/commercial addresses in South Africa.
SPECIAL ON MULTIPLE ORDERS OF 10000 litre, 15000 litre & 20000 litre JOJO WATER TANKS AND CHEMICAL TANKS…CONTACT US FOR A FREE QUOTE!
(15000 litre and 20000 litre JoJo vertical water tanks & chemical tanks are available on order directly from JoJo Tanks’ main factory)
Live in the USA and need rainwater harvesting equipment? Click HERE!