The HUBER RoDisc® Rotary Mesh Screen is a quick and efficient solution if you want to upgrade your wastewater treatment plant and ensure to produce a virtually solids-free effluent. Upgrading is especially required if the secondary clarifier does not work effectively and flocks pass into the channel. Our micro screen prevents concentration of suspended material, significantly improves effluent quality and thus substantially contributes to the protection of our waters.
The installation of a filter stage downstream of the secondary clarifier is an efficient and inexpensive option to upgrade a wastewater treatment plant. Insufficient tank depth, high hydraulic loads or the poor settling behaviour of activated sludge are the most frequent reasons why wastewater treatment plants are sometimes unable to reliably meet today’s minimum requirements on the concentration of filterable solids in the effluent. The overflow of flocks increases COD, BOD, N and P loads in the effluent and receiving water course with the result of increased discharge fees. A HUBER RoDisc® Rotary Mesh Screen as tertiary filter stage is able to guarantee a virtually solids-free WWTP effluent. Due to the gravity flow through our RoDisc® Rotary Mesh Screen and its low pressure loss the screen can easily be integrated into existing sewage treatment plants. Due to its small space requirements and modular design the RoDisc® Micro Screen can be tailored to suit any specific site requirements and keeps the structural alteration work required to a minimum.
An ineffectively working secondary clarifier is however not the only reason for upgrading a wastewater treatment plant with a downstream micro screen. Especially the accumulation of the nutrients phosphate and nitrate in surface waters can lead to eutrophication, growth of algae and water plants, oxygen depletion, and to fish dying and death of other water animals. Combined with precipitation and flocculation the micro screen can reduce phosphorus to a very low concentration. Precipitants transform the orthophosphate contained within the wastewater to hardly water-soluble materials. Flocculants transform the produced micro flocks to macro flocks which can be removed by the micro screen.