Our property was a poor candidate for a conventional tank and leach field system so after obtaining the ok from our local health officer we installed a grey/black water "topsoil builder".
Our drains are connected to a small 300 gallon plastic tank buried in our garden.
The tank is hooked to a downstream 30 gallon buried siphon which is piped into a 40'lx 4'w x 3''d trench filled with woodchips, planer shavings, sawdust, leaves really any carboniferous material.
The septic tank slowly fills the siphon with effluent. When full, the siphon releases the 30 gallon slug of liquid which fills a 2" pvc perforated pipe that is suspended within the chip bed and distributes the liquid evenly throughout the bed.
We have been using this system for over 20 years and have had the small septic tank pumped once during that time. The pumper commented on the healthy bacteria mat when he opened the tank.
We dig out loads of dirt from the bottom of the chip bed and use the black gold in our flower beds and for general soil nourishment.
It does not smell other than the occasional a whiff of septic water from the chip bed vents when the siphon releases. But since it is downhill about 85 feet from the house it is a non issue.
I borrowed a backhoe to dig the trench and lines. The siphon was probably the most expensive and fiddly to install item, then the tank and pipes. I bet I don't have $1000 in the thing.
Of course, I could not get away with something like this if I wanted to today.
Our drains are connected to a small 300 gallon plastic tank buried in our garden.
The tank is hooked to a downstream 30 gallon buried siphon which is piped into a 40'lx 4'w x 3''d trench filled with woodchips, planer shavings, sawdust, leaves really any carboniferous material.
The septic tank slowly fills the siphon with effluent. When full, the siphon releases the 30 gallon slug of liquid which fills a 2" pvc perforated pipe that is suspended within the chip bed and distributes the liquid evenly throughout the bed.
We have been using this system for over 20 years and have had the small septic tank pumped once during that time. The pumper commented on the healthy bacteria mat when he opened the tank.
We dig out loads of dirt from the bottom of the chip bed and use the black gold in our flower beds and for general soil nourishment.
It does not smell other than the occasional a whiff of septic water from the chip bed vents when the siphon releases. But since it is downhill about 85 feet from the house it is a non issue.
I borrowed a backhoe to dig the trench and lines. The siphon was probably the most expensive and fiddly to install item, then the tank and pipes. I bet I don't have $1000 in the thing.
Of course, I could not get away with something like this if I wanted to today.