How to clean years of accumulated gunk from kitchen sink piping
The PVC drain line from our kitchen sink was clogged but we managed to use a plunger to clear the clog and now it drains well. However the problem is sure to return and I need another solution.
The 2 inch PVC drain line from the bottom of the kitchen sink trap runs horizontally with a slight decline about 30 feet to the 4 inch main sewer line which connects to the septic tank. When I removed a clean-out at the end of the 30 foot run and watched water from the kitchen sink pass through the 2 inch pipe and flow into the 4 inch main line, I noticed masses of "gunk" flow out of the 2 inch line. Each mass was about 2 inches in diameter. This is material that must have built up in the pipe over the years. After a few minutes, there were no more masses of "gunk" coming out of the 2 inch line, and only water was running out of the 2 inch line into the 4 inch main. However the water running out of the 2 inch line was grey in color and was not running clear. I am guessing that the walls of the 2 inch line have accumulated "gunk" on them and that accounts for the grey color.
How do I clean the inside walls of the 30 feet of 2 inch PVC line so that the line does not clog again?
I think the typical snake one buys at Lowes or Walmart would be inadequate for this cleaning, true?
Home brew cleaner?
Chemical cleaner (that is friendly to my septic tank)?
Call a professional plumber with a professional snake to clean out the line?