Hendre
you could be onto something in theory. Maybe its possible that the bb in the probiotic further depletes 02 below levels that are normally found in the tank...idk im grasping at straws lolAnaerobic Bacteria
- Thread starter jaws7777
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Hendre
you could be onto something in theory. Maybe its possible that the bb in the probiotic further depletes 02 below levels that are normally found in the tank...idk im grasping at straws lol
LOL.... live ANAMMOX biomedia is sold by the IBC tote or truckload. Hobby scale!
http://en.paques.nl/anammox-granulated-biomass
http://en.paques.nl/anammox-granulated-biomass
I believe it should being an aerobic process.
I may send the professor a message about his coils and see what he has to say.
This is really interesting
There are a few research groups working on this. Some are trying to retrofit existing wastewater treatment plants with reactors that could be reasonably considered "home-scale". Others are trying to lock-up ANAMMOX bacteria in various types of plastic to be used like bio-pellets. This seems like a better approach for the fish hobby. I'd say we are a few years away from seeing any of this in the hobby.
https://www.ncbi.nlm.nih.gov/pubmed/22520223
https://www.ncbi.nlm.nih.gov/pubmed/28187386
Incidentally, I ran into a statement in my travels through the scientific lit. that DOM is inhibitory to the ANAMMOX process, which seems to be one of the big challenges in utilizing this process for removing NO3 in waste waters, which I assume translates directly to challenges that would occur in a fish tank.
J. H. said:
Hendre said:
J. H. is right. They're both carbon denitrators. They use the same hetetotrophic bacteria.
What flowrates had you considered for a coil design? I've run my tower design between 0.5 - 1 gpH. I believe most coils run at 0.25 gpH? The length of the coil has an impact on the flowrate.
Other carbon denitrators similar in structure to mine use higher flowrates (30-50 gpH). They work on the same principle as denitrification in saltwater reef. There are anoxic areas within the porous structure inside the rock in which denitrification can take place. Likewise, there are anoxic zones within a tower of pumice rock (especially with clogging, channeling) even though the flowrate through the tower is much too high for the O2 level in the entire volume of water to be significantly altered. In a low flow (0.25 - 0.5 gpH) denitrator the entire volume of water is typically rendered anoxic.
An example of a commercial carbon denitrator is the Aquaripure Large nitrate filter which has a flowrate just over 0.5 gpH.
http://aquaripure.com/shop/aquaripure-nitrate-removal-filter/large-aquaripure/
The other type of denitrator for aquarium use is a sulfur denitrator. It uses autotrophic bacteria. It's benefit is it doesn't use carbon so it's effluent can't produce bacterial blooms in a freshwater main display tank. The alkalinity of the output must be raised before it re-enters the tank so it's run through carbonaceous rock or coral. There's fewer suspended solids produced from sulfur denitrators so they're nice but I have no experience with the units.
https://www.marinedepot.com/filters_korallin_biodenitrator-ap.html
Thanks for the tag
J
jaws7777
and sorry for the late reply. Been working like crazy and kids are back to school.
I still have my seachem denitrator going. It's been running for some time now. I get about two water changes per month. My nitrates are at about 40ppm and stay there most of the time prior to a water change. Just a single tower of media at 30gph and probably less as the pump is pretty cheap. Went for the lowest price on everything. Didn't sees the tower just put it in my tank and let it go. After about 4-5 weeks is when I noticed the water holding its levels. Since then just shake it around to clear out some gunk.
Cool denitrators are nice but so flow dependent. Idea is for it to flow down long tubing and at the exit will be low oxygen and chamber filled with media and sustained anaerobic bacteria. It's very hit or miss as the flow needs to be exact. It won't take much to clog the cooked tube and everything gets messed up.
Sulfur denitrators are something I'm probably gonna do a project once I get some time. Has some good potential and results but not done enough on the freshwater side. Pellets should work well if dosed right and keep replenishing it.
I still have my seachem denitrator going. It's been running for some time now. I get about two water changes per month. My nitrates are at about 40ppm and stay there most of the time prior to a water change. Just a single tower of media at 30gph and probably less as the pump is pretty cheap. Went for the lowest price on everything. Didn't sees the tower just put it in my tank and let it go. After about 4-5 weeks is when I noticed the water holding its levels. Since then just shake it around to clear out some gunk.
Cool denitrators are nice but so flow dependent. Idea is for it to flow down long tubing and at the exit will be low oxygen and chamber filled with media and sustained anaerobic bacteria. It's very hit or miss as the flow needs to be exact. It won't take much to clog the cooked tube and everything gets messed up.
Sulfur denitrators are something I'm probably gonna do a project once I get some time. Has some good potential and results but not done enough on the freshwater side. Pellets should work well if dosed right and keep replenishing it.
I wonder how a very low flow rate with an intake strainer can be achieved. I'd like to try this
What kind of pump usually drive coil denitrators? Peristaltic?
If I understand correctly it's not just debris entering at the intake, it is the line becoming clogged by biofilms growing inside. To which I wonder, if these are normally constructed with airline tubing, why not bump the tubing to 1/4" ID or larger aside from the obvious (size)?
Not sure on pump size. Most need to put out 0.5gph or less. That's the ideal for big cool denitrator with like 50ft plus of tubing.
Gotta check but I have a friend who's into salt and see what his opinion on stuff like this is. He's done stuff like this prior so may pick his brain and see.
Gotta check but I have a friend who's into salt and see what his opinion on stuff like this is. He's done stuff like this prior so may pick his brain and see.
