How do you manage liquid levels in a gas header?

That can be a challenge. Because of differential settling on a landfill site you can end up with gas headers that were initially graded so to have spots where the liquid could be dropped out, but now, you have low spots or low-lying areas where the liquid can actually block off the piping. If your issue is liquid accumulating in the pipe because of a low point the only solution is to repair the pipe. It has to be lifted or replaced in order to get that area to flow properly.  But, managing the liquid in the header system is either done through what is called a condensate sump dropout or a drip leg. This is basically a vertical pipe of some sort that is attached to the horizontal headers and drilled down a few feet into the ground.  It’s a point for liquid to accumulate or “drop out” of the header line. Now the liquid moving through the pipe will fall into the dropout tank and you just install a single pump down in that tank to keep the sump itself dewatered.