A bit of a recap so far with the equipment. The filtration system is great, and once completely setup the ease of use for this will be like no other system I've seen.
I'll give a 'verbal tour' of the system best I can, for more than this you'll have to stop by and see it for yourself (or hope I put pictures up when I get a chance).
So the water overflows into 2 return PVC pipes which are I believe 6 inches in diameter. The water is gravity fed to the sumps which are located behind the tank against the back wall.
There are two identical systems for the following, one for each return:
First the water passes through a large mesh swimming pool filter, which is basically just intended to catch snails or fish and keep them from going any further. The water then passes through PVC pipe into the CADS filtration system where it goes through 100 micron mesh. As this mesh accumulates particulate matter the water level will rise, and a float switch kicks on. The water is diverted around the filter, and the filter chamber is allowed to drain. A vacuum cleaning mechanism then engages and the screen rotates around the suction hose, as high pressure water is sprayed underneath the filter dislodging all detrius that has accumulated. The vaccuum then sucks up the crud and it travels to a special box where the water and crud is pulled out of the vaccum's suction and discarded down a waste water drain. After one minute the vaccuum turns off and the water is redirected into the filter.
There is one skimmer attached to the sump. It was custom built directly into the sump, and has a dedicated 40 gallon per minute pump powering it, with a ball valve controlling the flow and rate of skimming. The skimmer cup has a hose fitted to it, so that any skimmate buildup flows directly down the drain. Waste water from the Dialyseas filtration system drains into the skimmer every 30 minutes, flushing the cup clean. There is also a small bio-balls compartment attached to the skimmer.
All that I previously mentioned is on the bottom level of the sump structure. On the top level we have the Dialyseas unit itself, another sump that can be used to run carbon or other media if needed, as well as the salt reservoir, 5 UV steralizers and 4 chillers.
The Dialyseas unit is basically a fancy water changer that does a few other things. It uses an artificial human kidney to filter ions out of the water (Nitrates, Phosphates, etc) 48 times per day, on the half hour and hour. You program the amount of water you want changed per day and it filters 1/48th of that amount every 30 minutes. It is constantly monitoring water level and salinity. If it detects the water level float switch to be too low it turns on the internal RO systems until the water level rises accordingly. If the salt water level is too low, it pushes tank water through the salt bucket adding super concentrated salt water to the sump in small doses. There are lots of other impressive features such as redundant safety cutoffs, but I'm not going to list them all right now. Theres also an internet monitoring program that I've yet to use.
After the water has done everything in the sump it is returned to the tank through 2 1.5" PVC pipes that run inside of the overflow pipes.
We've had a few small problems arise, but nothing we have not been able to fix. One of the coverings inside the tank that goes around the overflows arrived damaged and will have to be replaced. The tank was filled and the internal supports removed and a small leak formed two days later. We replaced the supports and the leak went away. The silicone he uses takes 90 days to cure, so we will be leaving the supports in for the next couple months until everything is 100% tight in place. We still have some micro bubbles, but I think they are getting better each day. He says most of his systems have them for about 2 weeks until everything breaks in and the water chemistry adjusts. We've learned that we have to be careful with the skimmer. It is fully adjustable from only the thickest of skimmate to very watery. If you leave the skimmer on watery mode all night the sumps start to run very low. We've had a few leaky gaskets here and there, but I think that is to be expected after a 2000 mile drive, and most of them just needed an extra 1/4 turn to fix them.
Overall we are still figuring things out, but I can already tell you that its a million times easier to maintain than our last system, and I think our livestock will stay happy and healthy in the system too!
We have yet to reintroduce livestock, but that will likely begin sometime in the next couple days. Stay tuned!
Cheers,
Tad