A Better Toilet

For A Cleaner World

The Liquid Waste Processing Module

by | Sep 1, 2013 | 2 comments

The latest version of the Liquid Disinfection Module is more compact and semi-automated. Solenoid valves and level detection switches control the flow of liquid from collection to process to holding tanks.

The liquid waste processing module uses electrodes to convert the natural salts found in urine into oxidants such as chlorine.  The electrochemically generated oxidants disinfect the liquid by destroying the pathogens that come from mixing with the solid waste.  The electrochemical process also breaks down the organics in the liquid as demonstrated in this video by the change in color during processing, using a green food coloring dye in a simulated urine solution.

Dr. Ethan Klem demonstrates the electrochemical disinfection module designed for manual control. The heat from combustion is used to dry the human feces applied to the cast-iron automated rotating plate inside the dryer apparatus.


  1. sanjana dua

    please tell me in detail the electrochemical process involved..?

    • Thaddeus Hunt

      Hi Sanjana,

      Liquid waste — including urine and liquid that is removed from the solid waste — is disinfected through electrochemical processes using carbon electrodes. Once treated, the disinfected water will be suitable for use as rinse water for the toilet or as a fertilizer supplement.

      There is also additional info in this post as well: http://abettertoilet.org/liquid-waste-processing-update/


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