Frost free "drain"

[franz frippl]

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.

[hallerb]

ding and too many

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........

[franz frippl]

Pond has sufficient space and depth to handle effluent.

It is not always acceptable to have a second well for this type of system. In fact, in this state it is not permitted.

There's no way to exhaust the well.