This screen filtration is fully integrated with fine filtration to complete the primary wastewater treatment.
According to the invention, the catalyst is retained in the reactor by fine filtration, which simplifies the method considerably.
This method further comprises carrying out simultaneously a dehydration operation and a fine filtration operation using a filtration porous partition made of a hydrophobic material with a filtration sharpness of between 3 and 8 νm.
A second section (B1) comprises a screen member (15) and filtration panels (16, 17, 18) for fine filtration.
The membrane can effectively be used in various filtration processes including ultrafiltration, reverse osmosis, fine filtration, gas separation, vapor permeation, and pervaporation.
The filter channels comprises first coarse filter channels (20), second coarse filter channels (22) and fine filter channels (26).
The fine filter channels connect the first and second coarse filter channels.
The first and second coarse filter channels extend radially (R) and the fine filter channels extend tangentially (T).
The set of elements (7) hereby forms a finefiltering means.
Therefore, this filter element is easily produced, and can be used in a high speed fine filter device.
The fine planar filtration means may be a filter web arranged in the form of a collection bag.
The suction dredge also comprises a filter chamber (2) with a plurality of filters (10, 10') through which the suction air flow (11, 11', 11'') is guided for fine-filtering.
The invention relates to a method for producing a filter layer (1) featuring integrated coarse and fine filtering properties, especially for a dust filter bag of a vacuum cleaner.
An arrangement for filtering the air entering the interior of a vehicle, particularly the interior of a car, includes a coarse filter, a fan unit and a fine-filtering unit.
The finefiltering elements (7) are located at the downstream side of the filter wall (1) and secured thereto, more precisely in such wave formations that are open towards the downstream side (6) of the filter wall.
The invention concerns a method, including at least one superfine-filtration stage (7, 10), of filtering the organic solutions which arise in the production of circuit boards.