Ozone and Reactors.....Phosban, Pellets?

[demariners]

So I bought a Ozone reactor and I am trying to figure out what to do with the water coming out of it. I was planning on putting some carbon in a phosban reactor. I would however like to maybe do a carbon filter with phosban or carbon reactor then going to another reactor with NPX pellets. My question is, is all this safe with the water from the ozone reactor? Thank you.

 

[Randy Holmes-Farley]

Ozone won't impact GFO binding of phosphate, but it will potentially stop bacteria from growing on biopellets, and might keep GAC and GFO from doing a very good job on organics.

 

[demariners]

Thanks for the reply. What would you recommend then? I do have a refugium with chaeto to help with nitrates and phosphates already. But I was going to do a carbon post filter and I figured I could throw phosban in it as well? Thanks

 

[demariners]

Also, I am being told by the manufacturer of the ozone reactor that the reactor on the output should have water trickle down over the carbon. I am wondering if the effect of the GFO would be the same with trickling water? Thanks.

 

[Randy Holmes-Farley]

That use of GAC is important, but is to remove highly oxidizing species leftover from the ozone, not organic removal like folks usually use GAC for. Putting GFO in there may be fine.

 

[Rovuma]

Ozone won't impact GFO binding of phosphate, but it will potentially stop bacteria from growing on biopellets, and might keep GAC and GFO from doing a very good job on organics.

Hi,

What is the evidence to support that ozone stops GAC from adsorbing organics?

Do you see any merit in combining ozonation and GAC as a way to promote the biological activation of GAC practiced in water purification, and the idea that together they achieve a higher removal rate of biodegradable organic carbon?

Thank you,

 

[demariners]

Well I went ahead and got 2 Little Fishes Phosban reactors x2. I have one filled with carbon and one filled with phosban. They are out of the output of the ozone reactor and I dialed down the phsoban reactors input. We will see how this goes. The carbon doesn't seem to move much but the phosban is barely moving. I hope the back pressure doesn't cause any problems but that is how I have it for now.

 

[Randy Holmes-Farley]

Hi,

What is the evidence to support that ozone stops GAC from adsorbing organics?

Do you see any merit in combining ozonation and GAC as a way to promote the biological activation of GAC practiced in water purification, and the idea that together they achieve a higher removal rate of biodegradable organic carbon?

Thank you,

It is not evidence so much as the thought that the highly oxidizing environment will keep stripping organics off by reacting with them and making them more water soluble, which is known.

I think it is important to combine ozone and GAC to remove the oxidizing species. GAC does provide a good place for bacteria to grow (people dosing organic carbon may notice this), but live rock and sand also provide lots of surface area.

When I was using ozone (I stopped out of concern over HLLE), I used GAC on the air/ozone outlet, the water/ozone outlet, and elsewhere in the system to bind organics.