OWS is a world leading company in the construction and operation of anaerobic digestion plants, in the biodegradability testi ... ng of biopolymers and in waste management consultancy. OWS is leading the way in the digestion of solid and semisolid organics for over 30 years. OWS developed the DRANCO, SORDISEP and DRANCO-FARM processes. Currently the company has about 30 full-scale references (worldwide). read more