Water service - Import export

Brief Description The PWL ProCat chain driven rake screen UR can be equipped and used as a wedgewire or perforated plate screen. This rake screen combines the advantages of the rugged and durable continuous belt screen with the hydraulic capacity of a screen with one active screening area only – such as step screens or spiral sieves. The PWL ProCat Rake Screen UR having an inclined screen offers a maximum flow cross section. The vertical screenings removal from the channel is very space-saving and highly efficient although it works without use of service water. For constructional reasons it is impossible that the screenings are carried off downstream. Function The waste water flows through the wedgewire screen made of flow-enhanced stainless steel triangular profiles. The screenings are retained, directly picked up at the channel bottom by rugged scraper blades and transported to the discharge area where they are scraped off resp. discharged. Wedgewire: 1 to 60 mm Perforation: 3...

Application An extensive reduction of the screenings volume by returning organic ingredients into the clarification process offers besides important cost saving with regard to screenings disposal advantages for the process stability of nitrification/ denitrification necessary in nearly all clarification plants. The company ABZ in Austria implemented decades of experience in the field of screenings treatment on the screenings washers. Many references attest the leading position of this technology by which the screenings weight can be reduced on average by 75 %. Special attention has been turned to the development of least possible wear and utmost operational safety. The Interval-Wash-Compactor can be operated with service water from the sand trap area. Peak loads of screenings due to storm water events are handled without problem, as well. Function The screenings are discharged directly or via a conveyor from the screen into the infeed hopper of the washer. After a pre-compaction...