Unblocking a discharge pipe several km in length
asked 29 March 2016 asked by rienkedelo (870 points)
Hi As a preventive measure, if your pipe can handle a slight increase in pressure, you could use a wiper plug either pushed by the pumps or by an external system like a compressor, same principle if the pipe is not completely blocked. I suggest you use a wiper plug with a transmitter so you can follow it if a problem arises, and I would also start with the smallest diameter.
Do you have any info on this "transmitter plug"?
Some plugs are equipped with a surface detection system so they can be tracked. This means you could use them to monitor a section of your pipe, and if you have a Trimble-type GPS, this would also give you a depth reading. An important clarification on my first answer: watch out for elbows where the wiper plug might get stuck and create further blockage.
Hello, We clean a D200 wastewater discharge pipe every month. It contains effluent from the local municipality and a dairy producer. We do it ourselves. A soft, round plug (pig) is placed inside the pipe just outside the lift station (via a trap or pig launcher). The discharge pump pushes the plug all the way to the gravity discharge outlet. After each scraping session, we are back to our original flow rate.
Do you have the name of a supplier for this transmitter?
Hello, The problem with a wiper plug is that if the pipe has internal excrescences or calcified fat deposits, there is a risk of blockage.