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How to Add an Aeration Tank to an Existing Septic System in Illinois

Adding an aeration tank to an existing single or double compartment septic system offers several major benefits to homeowners. Aeration tanks promote the growth of naturally occurring aerobic microorganisms as a means of breaking down organic waste and extend the leach field, which leads to healthier soil and better grass coverage. Although professionals complete the retrofitting in as little as 30 minutes, residents of Illinois with some plumbing knowledge will save labor expense by installing a tank themselves.

Things You'll Need

  • Elbow-length rubber gloves
  • Flashlight
  • Diffuser assembly with air pump, 2 to 3.7 cfm
  • 10-foot flexible air lines
  • Air particle recirculator
  • Aerator housing
  • Aerator platform
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Instructions

    • 1

      Compare aeration systems to find one that best suits your septic system's needs and your budget.

    • 2

      Schedule a complete pumping of your septic system and do not use indoor plumbing once the drainage is completed until after the aerator is installed.

    • 3

      Identify the inlet and outlet baffles in your septic tank. The inlet baffle leads from your home plumbing system into the waste compartment and the outlet baffle carries processed waste to the leach field, typically recognized as the area in your yard with the best grass coverage.

    • 4

      Open the lid on the access service riser closest to the inlet baffle.

    • 5

      Install the diffuser assembly on the floor of the septic tank and connect one air line to the top of the assembly.

    • 6

      Open the lid on the access service riser closest to the outlet baffle. Mount the air particle recirculator on the outlet baffle and attach a second air line to the recirculator.

    • 7

      Choose the location to place your remote aerator housing and platform. Connect both air lines to the aerator and test the system by running indoor plumbing to push water into the tank.

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