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28 February 2018 Photo Pixabay
Use less water and save more
Don't think twice about being water-wise

“Lift up the handle as soon as you flush. Don’t use the whole five litres at a go,” says Dr Cindé Greyling, who reckons we could save 25% of the water we flush down the toilet. Dr Greyling, who completed her PhD in Disaster Management at the University of the Free State (UFS), has spent years studying ways to shape the drought dialogue. Her voice is one that deserves our attention as citizens of this province.

Over the past five years the Free State has been experiencing heightened stress levels on reservoirs and dams due to the drought conditions induced by climate change. Since 2013 the issue has been worsening instead of improving.

Feasible water-conservation strategies
Students and staff members are advised to apply the same principle in the bathroom and kitchen alike by not letting the tap run while rinsing coffee cups. You could save a litre or two a day by (depending on how much coffee you drink and the number of cups rinsed) by quitting this bad habit. According to Dr Greyling, litter on campus is a secondary way of wasting water which many are unaware of. Litter blocks the drains and water which could have otherwise been recycled is lost in the process.

What do fellow Kovsies say?
Unamandla Mdlotshana, a third-year Actuarial Science student proposed eco-friendly adjustments that could potentially save litres of water on our campuses. He believes that using bottles to collect drinking water from taps, installing more water dispensers, and introducing hand sanitisers in bathrooms could drastically minimise water usage.

According to Dr Greyling, litter on campus is a
secondary way of wasting water which many
are unaware of. Litter blocks the drains and water,
which could have otherwise been recycled,
is lost in the process.


In Tebogo Chabangu’s view, taking shorter showers, turning off the tap while brushing your teeth, and making sure taps are properly closed are some of the ways we could be water-wise. For the Anthropology honours student being water conscious means changing habits on a daily basis.

Join us as we spread the message of reversing the effects of the drought by saving water prior to the Rector’s engagement with students at 11:30 on 08 March 2018 at the Albert Wessels Auditorium on the Bloemfontein campus.

Remember to tag us on your water-saving tips on Facebook, Twitter and Instagram.

 

News Archive

UFS venture cleans up acid mine drainage
2015-07-06

The system that puts oxygen back into the water.

Photo: Supplied

South Africa is one of the most important mining countries in the world, beginning in the 1870s. Although the mining industry has been responsible for significant development and employment, it pollutes the environment and waters sources. Through the joint effort of a well-known mining company, the University of the Free State, and the Technology Innovation Agency (UFS/TIA) SAENSE Group, a new treatment for Acid Mine Drainage (AMD) has been developed.

The system treats the major contaminants found in acid mining wastewater effectively.  
 
The UFS remediation systems use a reservoir tank into which the AMD is pumped. The water then flows passively (without using energy) to the Barium Carbonate Dispersed Alkaline Substrate (BDAS) system. The metals and anions in the AMD react chemically with the barium carbonate and precipitate (form solids). The solids stay in the tank while the clean water is released.

The efficacy and applicability of the research was demonstrated on site in Belfast, Mpumalanga where the team constructed a pilot plant in July 2014. This patented technology has treated 1 814 400 litres of Acid Mine Drainage to date with an outflow water quality that satisfies the South African National Standards (SANS) 241:2006 & 2011 regulations for drinking water.   

Rohan Posthumus from the (UFS/TIA) SAENSE Group said: “At this stage, we do not recommend that the water should be used as drinking water, but certainly it can lower water usage in mines while finding application in dust suppression of washing processes. The team would like to complete a full characterisation of the final released water. There are currently no toxic by-products formed, and even very basic filtration can make the outflow drinking water.”

Prof Esta van Heerden’s research group from the Department of Microbial, Biochemical, and Food Biotechnology has been working on AMD research for some time, but the development of the BDAS system was started in 2013 by post-doctoral student, Dr Julio Castillo, and his junior researcher, Rohan Posthumus.

The data from the BDAS system have led to two publications in peer-reviewed journals as well as a registered patent.

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