I build many pressuized septic systems and sewer ejection systems, one thing you should be aware of is the pump discharge line will remain full and needs to be frost protected.Ī typical sewage ejector pump of 1/3 to 1/2 hp should suffice ( you can calculate TDH (total dynamic head) faily easily. The last thing I would normally do is disagree with Franktheplumber, but scd 40 pressure rated pipe (bell end 2") is rated for 300 psi working pressue. I buy my pumps local in case I have a warranty issue. I pay $310 plus the tax on that 264 pump. If you do use one it has to be a glue up unit, the pump could blow the rubber couplings off of it other wise. If you do not use a schedule 80 system the line can get blocked and that little pump can make enough pressure to blow the line apart and you will have a shitsplosion.Ī $300 plus tax pump and a 50 to 100 dollar poly basin should do it, no check valve per the forced main if I remember right. If you spoke to your inspector I hope you were informed. In most cases this is schedule 80 PVC and schedule 80 fittings with the pressure hubs. Keep in mind that you are now considered a forced sewer, this equates to using a pressure rated pipe and pressure rated fittings. A basin is a fairly cheap item if you can use poly in your area so I would get a large basin. You need a basin that will give a long enough duration of water flow to hydrate any prior solids as well as transport any in the current water load. Remember the water is the vehicle that the solids are floating in, this basin is small in water capacity and if you do not have enough water to wash and transport the solids to the exit they will stay and dry in the line. No, I don't like the basin size on this unit if it is pushing sewage. If the discharge pipe were pitched and the discharge has a flow towards the drain this solves the problem, if it is pumped against gravity it has to remain in suspension until it can reach a gravity drain or another pump or a field for absorption. This will cause a solid block of dewatered sewage waste. Paper dries out like a piece of wood in the line. You would need a basin and an ejector to make this thing you have going on here work, as it is built it should receive no sewage, poop or papers, it will not flow them to the end of the pipe and the solids will block the line so tight that you will not be able to even rod them through. You would have been better off using a smaller diameter 2 or 3 " pipe and created a forced main using an ejector pump and a basin going to the sewer discharge. You would also need a basin large enough to supply this unit with a capacity of product to make a cycle.Īfter looking at your pictures I don't think what you are trying to do is going to work very well unless it is just water, there is no pitch in any of this installation, that is going to trap sediments and debris. This is why a smaller pump is going to give you problems, it will lack the force to send a strong enough current of mixed sewage( solids and water as a vehicle) the length of the pipe prior to the solids leaving suspension. I'm almost certain you will not, the problem you will encounter is going to be the dewatering of the effluent discharge through the 100' section of 4" pipe.
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