![Page 1: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/1.jpg)
What treatment?
• Neutralization and partial desalination - essential for protection of the environment and human health and,
• Complete desalination - drinking water needed during the next four years
![Page 2: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/2.jpg)
Limestone handling and dosing system
![Page 3: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/3.jpg)
Full-scale neutralization plants
• Iluka Resources, Hamilton
• Namakwa Sands, Lutzville
![Page 4: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/4.jpg)
Fe(II)-removal with sequence batch operation
Parameter Only limeLimestone/lime
Western BasinFlow (Ml/d) 33 33Chemical cost (R/m3) 3.02 1.02 Chemical cost (R/a) 36 300 000 12 300 000 Central BasinFlow (Ml/d) 56 56Chemical cost (R/m3) 3.19 1.07 Chemical cost (R/a) 65 200 000 21 900 000 TotalFlow (Ml/d) 89 89Chemical cost (R/m3)Chemical cost (R/m3) 3.12 1.05 Chemical cost (R/a) 101 500 000 34 200 000
![Page 5: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/5.jpg)
Treatment at Grootvlei water (108 Ml/d)
Grootvlei Mine where contains 100 mg/l iron(II) and 350 mg/l alkalinity. Currently this water is treated at a cost of R3.7 million/month, using lime and oxygen. 100mg/l need to be oxidised in a more cost-effective way.
![Page 6: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/6.jpg)
Desalination
• Need 400 Ml/d by 2014 in Gauteng• Coal mining sector already produce 35 Ml/d drinking water from mine
water in Mpumalanga
![Page 7: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/7.jpg)
CSIR ABC Desalination process(Alkali-Barium-Calcium)
• Lime and/or CaS pre-treatment• Barium treatment for SO4 removal• Sludge processing
CaCO3 Ca(HS)2 Ca(OH)2 CO2
AMD H2O
CaSO4 BaSO4
H2O MS Mg(OH)2 BaCO3 CaCO3
Coal Sludge processing stage
CaCO3 Ca(HS)2 Ca(OH)2 CO2
![Page 8: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/8.jpg)
Western Utilities Corporation pilot plantto evaluate ABC process
![Page 9: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/9.jpg)
Mg(OH)2 Ba(OH)2 CO2
AMD Treated
H2O
BaSO4 CaCO3
Mg(OH)2
Fe(OH)3 H2O Ash
H2O Al(OH)3 Coal S
MnO2
Ba(OH)2(aq)
Mg(OH)2
TUT MBO process (magnesium-barium-oxide)
• Metal removal with Mg(OH)2
• SO4 and Mg removal with Ba(OH)2
• Sludge processing
![Page 10: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/10.jpg)
Soshanguve pilot plant for freeze desalination
Refrigeration unit
Heat exchangers
Ice filter
![Page 11: What treatment? Neutralization and partial desalination - essential for protection of the environment and human health and, Complete desalination - drinking](https://reader030.vdocument.in/reader030/viewer/2022032703/56649d155503460f949ea172/html5/thumbnails/11.jpg)
Ice production
Official launch – 25 October 2011 at 13:00 as Soshanguve Campus of TUT
HIF-01.wmv