GEO Calcium Reactor 618 - Help!
- Thread starter JohnL
- Start date
jdieck
New member
Dificult to know the maximum without some experimentation as too large of a pump could lift the media in an upflow reactor like the 624.
If you are using large sized media, I see no particular reason to increase the flow as the 15RLT shoud do a good job.
In theory you could go to the 20 RT which will give you 60 to 70 % more flow (And power consumption) but measure the base of the reactor so it could fit as it is about 1" longer. You will also need to change the adapters as the 20 RLT has 3/4" inlet/outlet size while the 15 is 1/2"
Here are the spec drawing of both with Japanese motors (MD) for you to compare. Note that the WMD with US Fasco motor are longer than those shown on the drawings:
http://iwakiwalchem.com/Literature/MD_WMD/MD1520.pdf
http://iwakiwalchem.com/Literature/MD_WMD/md_wmd_dims/IF20564_MD_15RT.pdf
http://iwakiwalchem.com/Literature/MD_WMD/md_wmd_dims/IF20565_MD_20RT_115NL.pdf
jdieck
New member
It has the Iwaki 20 RLT but note it is a down flow reactor so I have more pressure drop due to fines accumulation and no risk to carry media or fluidizing it.
jdieck
New member
I really do not know what are they planning at this time. I may end up posting the whole article in my site. I'll let you know within a week.
Reefer08
New member
Im having troubles with my GEO 618. I recently upgraded the needle valve to the US Plastics needle valve for the effluent and it keeps clogging and slowing down the drip rate. I switched back to the cheap black plastic effluent valve control and its still getting clogged and slowing down. Not sure why this is happening. Please help me!
Also I recalibrated my pH probe in the reactor same day I changed the effluent control valve. Now the Geo 618 is going crazy with bubbles moving upwards. Not sure why this is happening its been 2 days now and TONS of bubbles are still moving through the media and in the circulation loop.
pH in the reactor is still the same 6.60 and I haven't touched the Co2 solenoid at all.
Please help me.
Thanks
Also I recalibrated my pH probe in the reactor same day I changed the effluent control valve. Now the Geo 618 is going crazy with bubbles moving upwards. Not sure why this is happening its been 2 days now and TONS of bubbles are still moving through the media and in the circulation loop.
pH in the reactor is still the same 6.60 and I haven't touched the Co2 solenoid at all.
Please help me.
Thanks
jdieck
New member
Sometimes when the effluent stops but the CO2 keeps on feeding the CO2 will accumulate and form the bubbles.
Other posibility is that the feed to the reactor is pulling air in which may explain both the drop in effluent and the bubbles.
Can you provide additional info?
As above what size media are you using?
What is your CO2 bubble rate?
How are you feeding the reactor?
Do you see any bubbles passing to the effluent line that may block the flow if they can trapped in an inverted "U" of the effluent line?
Reefer08
New member
Im using CaribSea ARM coarse media. Its been running for a few months so the amount of media is 1 inch below the GEO line.
Everything has been super stable for the last few months but I can into problems after doing maintenance and recalibrating the pH probe. A lot of air is built up in the reactor, its probably from doing the recalibration though. I don't think I have any air leaks. Im assuming after a week it will go away.
Im using a Maxijet 1200 as a feed. My biggest concern as of right now is the the effluent needle valve on the effluent keeps getting clogged. Everyday it will clog and ill have to readjust it to 2 drips per second on the effluent.
Any ideas why the needle valve keeps getting clogged?
Im using one of these that keeps getting clogged:
I tried the the black one the geo came with and it clogs also. Please help me, thanks!!
Reefer08
New member
I don't completely understand this question, which inverted U are you referring to? But I placed my effluent line into a cup and opened the effluent needle valve 100% open. Several bubbles flew out of the effluent line into the cup that I drain it into.
Could the extra trapped air into the reactor be clogging the reactor effluent line?
Thanks
jdieck
New member
As you suspect, I do not belive it is really plugged say by sediment, bubbles trapped in the effluent line will resist the pass of the effluent if those bubbles can't get out because they can flow from top to bottom of the line when the line is pointing down.
Reducing the CO2 bubble rate will help prevent bubble accumulation (Assuming the bubbles is not air being sucked in). My feeling is that after you calibrated the probe, you increased the CO2 bubble rate which then promoted accumulation. CO2 bubble formation is an indication of excess CO2 flow. Keep in mind that if CO2 is not dissolving, then it can be curtailed and still maintain the same alkalinity concentration in the effluent.
Reefer08
New member
Thanks for the help. I believe my problems with the clogging effluent line are gone, knock on wood.... After most of the air was removed from the reactor my problems went away.
jdieck
New member
:thumbsup:
