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01. Acidic water near the pilot water cleaning station in Rosia Montana
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02. The acidic water has created a small stream under the mining railway
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03. This is the already-existing pollution in Rosia Montana
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04. The stream of acidic water comes from the old mining galleries, where the infiltration water gets contaminated
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05. Filtered water tank by the pilot cleaning station, courtesy of Rosia Montana Gold Corporation
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06. The degree by which compounds within the acidic water (solution) exceed the maximum allowed values
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07. Principle schematics for the pilot water cleaning station in Rosia Montana
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08. Water flow schematics of the pilot water cleaning station in Rosia Montana
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09. Acidic water neutralization block, schematics
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10. Acidic water neutralization block in the pilot water cleaning station
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10.1. Acidic water neutralization tanks, in operation
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11. Young chemist RMGC engineer explaining how the pilot plant works
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12. Electric motors controlled by Siemens Simatic microcontrollers
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13. Nautralization tank in which acidic water is blended with a solution of hydrated lime
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14. Electric motor agitating (mixing) the acidic solution (polluted/ contaminated water) with the hydrated lime solution in a neutralization tank
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16. Intake (flow) control automation in the pilot water cleaning plant in Rosia Montana
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17. Reaction speeds vary because of multiple factors, including water temperature
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19. Pumps resembling those used for blood dialysis (which is, basically, filtering) in the pilot water ceaning plant
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20. Basically, the neutralization materials are cheap (like chalk)
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20.1. After the acid has been neutralized, the water - obviously - contains some complex residue that needs filtering
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21. The water filtration block follows after the acid neutralization block
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22. Plastic-based nano-filter that is easy to clean (by blowing air into the reverse end)
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23. Upon entring the nano-filter, the water has some pressure
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24. Pressure gauges for the three nano-filters installed and operational
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25. As one may notice, one of the nano-filters will soon require cleaning
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26. More dialysis-like pumps in the pilot plant
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27. Do not touch! sign on a dialysis-like pump in the pilot water cleaning plant in Rosia Montana
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28. After filtration, we get not potable, but distilled water
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29. Since the water was cleaned, we need to do something about the resulting mud, a by-product of the cleaning process, so we squeeze it really tight, to get all the water out
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30. Resulting mud squeezing press, getting the remaining water out
