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Old 12-25-2014, 12:24 PM   #1
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RV residential sewage lift station

My first project for the new year is on "GO" now and would like ideas if there are any: I am going to put in a sewage lift station next to my garage/shop that is approximately 100 feet from my house. I will be piping the discharge from this lift station to my septic tank (permitted where I live) which will be a ninety-two feet (92') run with approximately a fourteen-inch (14") rise to where it will attach to the four-inch (4") line coming out of the house to the septic tank. I'm currently looking at two (2) different units with design factors more than I really need for this application. Each of them are package units, basically just remove from the shipping package and install, complete with pump, level switch, and check valve. I'm never satisfied that I have completely emptied either of my tanks on my TT and am sure that they are not as clean as I would like them after dumping. With this system I can flush the tanks out, the water will drain into the lift station via the regular dump hose and the lift station will pump it over to the septic tank. I will also have a nearby faucet which will be used to run lots of water into the lift station after cleaning out the TT to flush the line to the septic tank. I'm wondering if anyone else out there has done this type lift station at home and have any suggestions.

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Old 12-25-2014, 01:08 PM   #2
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I use this thru a (5/8) garden hose. 100' length and 14" rise No problem! Youroo!!
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Old 12-25-2014, 01:56 PM   #3
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I'm very interested in your concept. We too are also on an aerobic waste system that's on the completely other side of the house. We park our MH next to our 18x50ft shop that is 90ft from the house. I have water and 30amp service ( shop has dedicated 60amp service), but great way to dump. It is at least 200ft from my RV parking to my septics 4" service port.

My current method requires a strong stomach and 5 gallon buckets labeled with skull & bones!
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Old 12-25-2014, 02:46 PM   #4
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Be careful of "shocking" your system.
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Old 12-25-2014, 06:53 PM   #5
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@youroo: I made one of those to use in this application. I used an "upper medium" quality garbage disposal and it works just fine IF I park the TT in my driveway which will be about a sixty foot (60') run to the tap at the drain line from the house and fairly level. When I park the TT at the shop it just doesn't work as good, it takes way too long and the amount coming from the pump/disposal is very low. By the way--nice Bridgeport, I'm a retired machinist and loved the work. @"funfinder": When, and NOT if, I finish this project I will post photos and details as to which system I decide to use. Digging the hole for the thirty-gallon tank and the run from the shop to the drain live from the house will be the biggest hurdle. My "after Holiday's belly" will be needing it for sure . I can't imagine doing this job with five-gallon buckets. @MC9: With a four-thousand gallon septic tank I hope that the thirty gallon black tank + the 30 gallon grey tank won't be enough to shock the system. Actually I went to the local County permit office to ask about a permit to do this and they were really interested in this system. One of them looked at the records and told me that I had the four-thousand gallon tank (I didn't know that). He then told me that he could not see any way that I could harm my present system with this set-up and it's intended usage. I do not need a permit to put this system in nor tie it into my existing septic system. I'm more concerned with the fact that I will be also tying in the drain line from the sink in my shop to this system when I'm done. Currently the sink is on a twenty-foot drain tile imbedded in gravel which was put in back in 1996 and has been draining rather slow lately. I'd just as soon tie this sink in while I'm doing all this work.
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Old 12-25-2014, 10:40 PM   #6
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Just get a FloJet "Poop-Cannon" like this:

http://www.3tailer.com/media/catalog...ages/46957.gif

Get appropriate 3/4" hose and let it fly.

Been using ours for two years now and would never go without it.
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Old 12-25-2014, 11:22 PM   #7
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Seems like a pretty expensive fix for what (at least to me) doesn't seem like a big problem. I always leave a few gallons of water in my tanks. I add anti-freeze in the winter. No problems so far.
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Old 12-25-2014, 11:38 PM   #8
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That link didn't work, but I think you meant something like this?:

Amazon.com: Flojet 18555000A Waste Water Pump: Automotive

No need to "build" anything. Just hook this to your sewer outlet, hook up a garden hose to reach your septic tank, open the valve and turn it on. You can run as much water through it when you're done as you want--even use a clear elbow in front of it to see what's happening with the discharge. Good luck!
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Old 12-26-2014, 06:53 AM   #9
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Your idea sounds fine, I'm on the Town sewer system and they won't even let me dump into a clean out, just one of those dump ordinance's made up by non RV people. I sit on the Town Council and still can't convince them to change it. You might want to look at a macerator pump from West Marine. Not sure how far it can pump up hill, but the specks will tell you that and it runs off 12 volt. I have a macerator pump on a basement toilet that I installed that came with the toilet and it says that pump will pump vertically 12', then tied into an over head waist line the pump has a 3/4" outlet. I also have to do that 5 gal bucket thing, but then I just dump it down the toilet so where is the sense of this ordinance.
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Old 12-26-2014, 07:46 AM   #10
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I'd say that yours is a case of "what the township doesn't know won't hurt them." Your situation will also be much easier using the 12v Flojet macerator pump. At night.
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