Sludge removal by fish!

Move away from expensive water treatment plants to treat sewage. Terry Welch, who runs several small treatment facilities in northern New Hampshire, thinks he’s found a better way to get rid of the sludge.

Employ fish to eat the sludge! He mentions candidates such as perch, bluegills, hornpout, large mouth and small mouth bass as being able to do the job.

Read more here –
http://loe.org/shows/segments.html?programID=94-P13-00008&segmentID=3

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