WASTE WATER Solutions HUBER Coanda Grit Washer RoSF4 Grit separation, washing, dewatering in one system – Reduced disposal costs – Utilisation of the Coanda effect ensures high grit removal efficiency. – Less than 3 % organic content – High solids throughput – More than 2,000 installations

Grit from grit traps of wastewater treatment plants The grit contained in the wastewater is usually removed in grit traps by gravity or centrifugal force to protect downstream equipment. Various different grit trap systems are available for this purpose which however separate not only the grit but frequently also many of the organic particles, dependent upon the hydraulic load (inflow). The separated particles are then pumped from the grit trap to a grit classifying unit (screw or pilgrim step classifier) which remove the solids from the flow without any differentiation. As a result, the loss on...

Design and function Classifying and washing in one system The HUBER Coanda Grit Washer RoSF4 combines grit classifying and grit washing in a single and compact unit. By using the Coanda effect the process of classifying can be combined with the process of sorting to ensure a continuously high separation efficiency and outstanding washing performance. Coanda effect for excellent grit classifying WASTE WATER Solutions After removal of the organic material the clean grit is removed through a classifying screw, statically dewatered and discharged into a container. The organic material left in the...

➤ ➤ ➤ Options for grit washing processes WASTE WATER Solutions ➤ Reduced disposal costs grit trap washed grit, loss on ignition < 3% service water grit from sewer system, road refuse ➤ 95% capture rate of 0.20 – 0.25 mm diameter grit particles due to the Coanda Effect and low surface overflow rate ➤ Organic content reduction to < 3% loss on ignition ➤ Dewatering of washed grit to approx. 90% dry residue transporting water ➤ No additional preceding screening required (e.g. < 4 mm) ➤ Separate organics discharge allows for separate further treatment of organics ➤ Suitable for treatment of grit from...