Chemist Karens;
Anon has been tasked with recommissioning an acid waste disposal system, and truth be told, anon has no chemistry background whatsoever. We've moved into the premises fairly recently and this system is left over from the previous tenants, complete with some of their acidic waste still in it.
System takes waste acidic water from a sump, pumps it into tank 1 (rh), measures the ph, doses something into the tank to neutralise the acid, and mixes it.
After the mix is given time to settle it's pumped into tank 2 (top centre) for another settling. Then drained from middle of tank into tank 3 (lh) for a final settling and ph check.
Then drained into normal sewer from middle of tank 3.
We're not actually putting anything acidic into the sump, only fresh water now, but enough acidic silt is in the system that we can't just discharge it. Our budget certainly doesn't stretch to having the system professionally cleaned out, or hiring an actual chemist. So we plan to try and recommission it and just neutralise the acid every time we need to drain the sump which will probably be about once per month.
PH measures about 3.5~4 in tank 1.
The question is, what would you dose into it to neutralise it?
A "keep your workplace tidy" poster left from the previous tenants shows that they dosed a liquid from a large blue barrel into tank 1 to neutralise it, but can't make out the label on it. Any ideas what chemical they'd be likely to use?
Ta
Anon has been tasked with recommissioning an acid waste disposal system, and truth be told, anon has no chemistry background whatsoever. We've moved into the premises fairly recently and this system is left over from the previous tenants, complete with some of their acidic waste still in it.
System takes waste acidic water from a sump, pumps it into tank 1 (rh), measures the ph, doses something into the tank to neutralise the acid, and mixes it.
After the mix is given time to settle it's pumped into tank 2 (top centre) for another settling. Then drained from middle of tank into tank 3 (lh) for a final settling and ph check.
Then drained into normal sewer from middle of tank 3.
We're not actually putting anything acidic into the sump, only fresh water now, but enough acidic silt is in the system that we can't just discharge it. Our budget certainly doesn't stretch to having the system professionally cleaned out, or hiring an actual chemist. So we plan to try and recommission it and just neutralise the acid every time we need to drain the sump which will probably be about once per month.
PH measures about 3.5~4 in tank 1.
The question is, what would you dose into it to neutralise it?
A "keep your workplace tidy" poster left from the previous tenants shows that they dosed a liquid from a large blue barrel into tank 1 to neutralise it, but can't make out the label on it. Any ideas what chemical they'd be likely to use?
Ta
