I think I can predict what they would say. It will be a version of what comes out of their marketing department in terms of O3 breaking down into clean and pure O2, leaving no harsh chemical residues. So far no one selling ozone units has ever said anything about the production of halides.
DIY Ozone System
- Thread starter CHOMPERS
- Start date
Would it be more or less effective to use a system like this
http://apexdistribution.stores.yahoo.net/viairglwaoz.html
States that it produces 200mg/h ozone. Would you have to seal one of these or would it work as is just fine?
http://apexdistribution.stores.yahoo.net/viairglwaoz.html
States that it produces 200mg/h ozone. Would you have to seal one of these or would it work as is just fine?
I´ve just read the thread through and was wondering about the dangers of pressing too much nitrogen gas into the water through air injection. I only ask cause you´re not degassing afterwards and have basically built a perfect oxygen gas injector. Granted less than perfect for an air mix but if the pump is allowed to build up too much pressure (sump to top of tank) there is a danger. Even irregular running intervals could cause longterm problems. Your thoughts?
j<><
j<><
necrocanis;2016973; said:
No you wouldn't have to seal it. Fifty bucks is the most amazing price I have seen out there. It is also looks like a good unit. Everything is mostly in the $700+ range but I have seen some units around $300.
justin guest;2017041; said:
I recall high nitrogen levels being a problem for aquaculture, but I hadn't thought of it here. Thanks for the tip; I'll look into it.
The system had vapor locked on me at one time, so over pressurization is always a possibility. During normal operation, there isn't much of a pressure drop compared to before the mixing system was added.justin guest;2017041; said:
I had thought about the possibility of supersaturation of oxygen but since there isn't a temperature change or significant pressure change, I figured the possibility would be remote. With the water passing through the carbon bed, I figured elevated O2 levels would drop to the saturation limit. If I recall correctly, N2 causes severe issues well below its satruation limit. When the system is in operation but with the generator off, there are not behavioral indications of water quality problems.
CHOMPERS;2018702; said:
Water with supersaturated oxygen doesn´t usually cause problems until o2 is above 180%. I don´t believe you will be reaching these levels because of the fall into the sump. The n2 problem is usually only apparent above 0.5 bar pump pressure (mains pressure or rapid sand filters for instance) but the amount of air you were sucking in just got me wondering... If you´ve already had the system running continually for more than a couple of days with air injection (with or without o3 doesn´t make such a difference) then I guess it shouldn´t be a problem. Keep me posted as I´m wanting to build a reactor when i head back to australia next year and your design does seem effective. Just one question - why haven´t you linked up the o3 source to a cheap redox controller?
j<><
P.S. The rest o3 usually gets changed into 02 and co2 when it comes into contact with the carbon. The o2 present in large quantities in the tubing before the carbon should pass through without much of it reacting. Because of this effect I´d expect a higher concentration of o2 coming out of the reactor but as mentioned above the sump fall should hold everything at safe levels
j<><
j<><
I found the numbers for Nitrogen. It becomes deadly to fish at 103% of saturation. Or in other words, 3% over saturation. I didn't find any information on what the saturation limit is (temperature dependant).
It is good news that the point of toxicity is above the saturation limit.
It is good news that the point of toxicity is above the saturation limit.
