On Nov 18, 8:13�am, franz frippl wrote:
Here's the goal:

Geothermal open loop water-to-water system using well water and
discharging effluent to pond.

One option is to bury a 1" drain line below frost depth from building to
pond. �Distance = 150'. �Problem is the soil is very sanding and too many
obstacles to dig under.

Other option would be for effluent to feed a water feature near building
with a man made raceway to the pond. �This would be easier and cheaper to
construct. �Issue is preventing a freeze up where effluent leaves
building or ice accumulation that would eventually block flow.

I have to keep the drain line no smaller than 1".

Would a anti siphon device work? �It would seem that such a device would
allow the last few critical feet of the line to drain when the water flow
is cut off. �

Ideas? �Suggestions? �Improvements?

Thanks.

does the pond have a drain, to saay a creek? if not it will overflow.

might be easier to drill a sevcond well nearby and send the water back
down.

besides this way you wouldnt exhaust your well........