Can anyone suggest method to agitate slurry inside Biogas digester to stimulate bacterial activity avoiding both gas leaks & outside air enterance ?

Capacity of plant is around 2-3 m3 . After critical survey on the literature I found there is lack of ideas and suggestions on agitation of slurry inside  such mid-size digester (6-8 feet) .Many...

12 December 2014 9,931 8 View