Coarse grain dirt stuck Nilfam

Garbage collection is one of the physical purification processes in which the process of removing and separating solids and floats with diameters greater than half a centimeter can be performed manually or mechanically, depending on the amount of water or inlet sewage The most common type is the Manual Bar Screen, which is generally "used in small-scale refineries, and in large-scale refineries because of the large volume of junk," it is necessary to use automated mechanical scrapers.
Garbage collectors are usually made of lattice or bar nets and prevent any large pieces of junk from entering the treatment ponds by installing them in the sewer flow path. Coarse grain dirt stuck is used to separate coarse materials such as foliage, bottles, etc.… and medium coarse scrubber is used to remove relatively coarse material. When using pumps and other mechanical equipment, use of dirt stuck is essential. The gap between the coarse scraper rods is at least 2 cm and the method of cleaning it will be by hand and with a rake. To create more surface contact, install these bumpers at an angle of 30 to 45 degrees from the horizon.
Initial meshes were cylindrical or diagonal discs, the litter of which was made of copper or bronze plates with metallic slits and installed in the primary treatment of wastewater instead of settling ponds. Junkers in terms of distance between bars:

-Cross screening

-medium screening

 -fine screening