Energy consumption for sludge dewatering

Hello,  

I am looking ​into some ​specific values ​for typical ​sludge ​dewatering ​pathways for ​municipal ​sludge. ​

Ideally, I ​would like to ​retrieve energy ​consumption ​rates for dewatering ​techniques (​mostly ​centrifuge and ​belt presses). ​Something like ​typical kWh ​required per ​ton of sludge ​treated. ​

Does anyone ​have a ​literature ​reference for ​this? Or maybe ​commercial ​flyers for some ​of the most ​common pieces ​of equipment? ​

Any hint is ​greatly ​appreciated ​