Been there. Done that. The thickener where I worked (now retired) was enclosed, a foam dome. So we'd have lots of ventilation set up, safety gear standing by, and continuous oxygen etc, monitoring as a confined space.
We'd test the chlorine residual in our reclaimed service water tank every shift. We usually ran it at least 6 ppm. So there'd always be a slight touch of chlorine (disinfection) smell in the air during a cleanout/washdown. The insides of our anaerobic digesters (during a cleanout), instead of "smelling gross," actually smelled like motor oil. Also did some aerobic sludge digester cleanouts, which, again, didn't "small gross" either, but actually smelled like fresh dug dirt. Just the same, with that extra residual of chlorine, things started smelling (disinfectant) cleaner as we went.
That shit is moving so easy lol. Nice tho. I had to do a roofing company enclosed tar tank about that big. Shit wouldn't move unless you blasted it point blank 😢
If the rake arm was lowered properly the skimmer blades would prevent this must build-up. Please advise your Senior Mechanic. This is from my training at Village Creek Reclamation Facility in Fort Worth.
So these are automated thickeners, standard practice on Gold mines here in SA and on that particular mine owned by a Canadian mining house. The start position is a few mm off the base. As sediment builds up sensors raise the arms to prevent them from scraping up sediment as an earth moving Grader would do, and creating an obstruction. This prevents the risk of damage but more importantly the cost of the downtime required to empty the thickener and clear the obstructions. In this particular case the arms have moved up 30mm+ from buildup over a long period of time. If I'm not mistaken these arms can adjust upwards over 60mm but it was decided to perform a cleanup of the thickener during a major planned maintenance shutdown.
@@gregchristos8954 I thought the entire point of the scraper arms, is to move solids to the centre. If you just keep raising them up, won't they achieve nothing?
@@RangieNZ as I pointed out in answering the initial post, this is buildup over years that is being cleared out during a major planned maintenance shutdown. This particular maintenance was for a Canadian mining house on a large open pit gold mine. I am not an expert in the engineering technology that goes into the design of thickener tanks so I cannot comment on the science that goes into it. If I recall correctly 18 000 tons of ore goes through this plant per day, which is more than many mines achieve in a month.
Great job on the tough task! Quick question: what's the waterjet machine's pressure?
65 bar.
Been there. Done that. The thickener where I worked (now retired) was enclosed, a foam dome. So we'd have lots of ventilation set up, safety gear standing by, and continuous oxygen etc, monitoring as a confined space.
We'd test the chlorine residual in our reclaimed service water tank every shift. We usually ran it at least 6 ppm. So there'd always be a slight touch of chlorine (disinfection) smell in the air during a cleanout/washdown. The insides of our anaerobic digesters (during a cleanout), instead of "smelling gross," actually smelled like motor oil. Also did some aerobic sludge digester cleanouts, which, again, didn't "small gross" either, but actually smelled like fresh dug dirt. Just the same, with that extra residual of chlorine, things started smelling (disinfectant) cleaner as we went.
I did this for a shut down job in a mine site love every minute of it using a high pressure washer a powerful ii one 😂😂
That shit is moving so easy lol. Nice tho. I had to do a roofing company enclosed tar tank about that big. Shit wouldn't move unless you blasted it point blank 😢
It takes time to clean
Sir tank me kon sa chamical dalte hai
Good job
That be so dam so cold, one good thing about tho is it would stop aging process 😅
If the rake arm was lowered properly the skimmer blades would prevent this must build-up. Please advise your Senior Mechanic. This is from my training at Village Creek Reclamation Facility in Fort Worth.
So these are automated thickeners, standard practice on Gold mines here in SA and on that particular mine owned by a Canadian mining house. The start position is a few mm off the base. As sediment builds up sensors raise the arms to prevent them from scraping up sediment as an earth moving Grader would do, and creating an obstruction. This prevents the risk of damage but more importantly the cost of the downtime required to empty the thickener and clear the obstructions. In this particular case the arms have moved up 30mm+ from buildup over a long period of time. If I'm not mistaken these arms can adjust upwards over 60mm but it was decided to perform a cleanup of the thickener during a major planned maintenance shutdown.
@@gregchristos8954 I thought the entire point of the scraper arms, is to move solids to the centre. If you just keep raising them up, won't they achieve nothing?
@@RangieNZ as I pointed out in answering the initial post, this is buildup over years that is being cleared out during a major planned maintenance shutdown. This particular maintenance was for a Canadian mining house on a large open pit gold mine. I am not an expert in the engineering technology that goes into the design of thickener tanks so I cannot comment on the science that goes into it. If I recall correctly 18 000 tons of ore goes through this plant per day, which is more than many mines achieve in a month.
That looks like fun
Where is this wastewater treatment plant at? 😳
Kumtor Gold Mine, Kazakhstan
No good tu much water veset hi idea no good
Sssss