ᐅ Waste lifting station for a 150-meter-long wastewater pipe (or drainage pipe)
Created on: 23 Feb 2019 08:55
M
mazzo0412
Hello everyone,
We bought an old, great house at a very good price. Since the municipality has already provided a water connection and a sewage connection at the property, we are required to connect to them.
The distance from the municipal connections (at the street) is about 150 meters (490 feet), so this length needs to be installed on our private land.
The first quote was around 50,000 euros (all included), so we are currently looking for a better solution.
The problem with the sewage line is that it lies 3 meters (10 feet) deep, with a lot of groundwater present, which results in significant work such as excavation. According to the contractor, the slope would be sufficient (the house is built on a slab and is 50cm (20 inches) lower than the street in front, where the municipal connection is at 3 meters (10 feet) depth). After leveling, it turned out that we achieve exactly a 1% slope.
Now my alternative considerations and question to you:
1. If I install a sewage lifting unit with a macerator (of course a stronger model, costing about 5,000 euros) in the old three-chamber septic tank and then discharge the wastewater/sewage into the public sewage system via a 50mm (2 inch) PE pipe over the 150 meters (490 feet), is that possible?
2. In that case, the pressure-driven sewage pipe could be buried at about 1 to 1.2 meters (3 to 4 feet) depth and then connected to the municipal connection, which is 3 meters (10 feet) deep, within a transfer shaft at the street. This would mean no need to maintain the leveling, and the trench would be much smaller. We could also relocate the fresh water line slightly higher and place it above the sewage pipe, in the same trench. Or am I completely wrong here?
3. Or should I apply for permission from the municipality to use a sewage pit?
4. Or do you have another idea? What do you think of the offer (maybe it’s an "anchor offer")?
Thank you very much!
We bought an old, great house at a very good price. Since the municipality has already provided a water connection and a sewage connection at the property, we are required to connect to them.
The distance from the municipal connections (at the street) is about 150 meters (490 feet), so this length needs to be installed on our private land.
The first quote was around 50,000 euros (all included), so we are currently looking for a better solution.
The problem with the sewage line is that it lies 3 meters (10 feet) deep, with a lot of groundwater present, which results in significant work such as excavation. According to the contractor, the slope would be sufficient (the house is built on a slab and is 50cm (20 inches) lower than the street in front, where the municipal connection is at 3 meters (10 feet) depth). After leveling, it turned out that we achieve exactly a 1% slope.
Now my alternative considerations and question to you:
1. If I install a sewage lifting unit with a macerator (of course a stronger model, costing about 5,000 euros) in the old three-chamber septic tank and then discharge the wastewater/sewage into the public sewage system via a 50mm (2 inch) PE pipe over the 150 meters (490 feet), is that possible?
2. In that case, the pressure-driven sewage pipe could be buried at about 1 to 1.2 meters (3 to 4 feet) depth and then connected to the municipal connection, which is 3 meters (10 feet) deep, within a transfer shaft at the street. This would mean no need to maintain the leveling, and the trench would be much smaller. We could also relocate the fresh water line slightly higher and place it above the sewage pipe, in the same trench. Or am I completely wrong here?
3. Or should I apply for permission from the municipality to use a sewage pit?
4. Or do you have another idea? What do you think of the offer (maybe it’s an "anchor offer")?
Thank you very much!
W
wurmwichtel7 Mar 2019 21:42mazzo0412 schrieb:
...then it is obvious that a pressured wastewater line will be much cheaper... Due to the location of our plot, we needed a pumping station to discharge into the sewer system.
According to the utility association, the pumping station alone cost around €14,000. The remaining 8 meters (26 feet) to the connection chamber didn’t make a big difference, although the installation of the connection was quite complex (the pressure line is apparently not allowed to discharge directly into the sewer due to the risk of erosion).
Actually, the obligation to connect should still be fulfilled if you have a tank where the wastewater can be collected and transported.
In our case, this option is allowed if connecting to the sewer is not economically feasible. Ask to see the regulations!
C
chriz08158 Mar 2019 13:51Hello,
which pipe material and nominal diameter were offered?
In which state or region will the pipe be installed?
What is the soil condition? Are demolition or cutting works necessary for the installation of the pipe, or is it on a greenfield site?
Where do the high costs in the quote come from?
which pipe material and nominal diameter were offered?
In which state or region will the pipe be installed?
What is the soil condition? Are demolition or cutting works necessary for the installation of the pipe, or is it on a greenfield site?
Where do the high costs in the quote come from?
M
mazzo04128 Mar 2019 15:59Here is the offer
M
mazzo04128 Mar 2019 16:01And here is the rest
