[Digestion] new types of rural digesters

[davide]

dear list, 

today i was reading an article I found on the net at: http://www.i-sis.org.uk/BiogasChina.php
by Prof. Li Kangmin and Dr. Mae-Wan Ho.

at a certain point it says: "The ‘China dome’ digester     became the standard construction to the present day [...], especially for small-scale     domestic use. But many     new types of rural household digesters have also been built based on water     pressure, as for example, the plug flow auto-cycle     rural digester, the up-flow small     scale digester, the fender digester, and recently, the pulse     flow anaerobic reactor."

I am not an expert, and don't know about the site reputation, but  I've never heard about  auto-cycle, fender, pulse flow. Does anybody know something more about this kind of digesters? 

Hope it is not a stupid question, regards, davide


 		
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Vinci i biglietti per FIFA World Cup in Germania!