In general wastewater treatment, whether it is seawater desalination, industrial wastewater and water reuse and reverse osmosis system pretreatment will use the filter filter element, then the filter element has a large flow filter element (pall Pall large flow filter, parker Parker large flow filter, 3m large flow filter), microporous folding filter, PP cotton filter, wire wound filter and other forms. Do not know how to choose, that from the system design, flow and pressure to judge.
Factors for selecting large flow filter element in reverse osmosis system pretreatment
As the name implies, the flow rate of the filter is larger than that of other filters, so it is called a large flow filter, a large flux filter.
In general wastewater treatment, whether it is seawater desalination, industrial wastewater and water reuse and reverse osmosis system pretreatment will use the filter filter element, then the filter element has a large flow filter element (pall Pall large flow filter, parker Parker large flow filter, 3m large flow filter), microporous folding filter, PP cotton filter, wire wound filter and other forms. Do not know how to choose, that from the system design, flow and pressure to judge.
Large flow filters are generally used in filters with large flow rates and large pressure. Why does this filter have a large flow rate?
First of all, from the perspective of his production process structure: the large flow filter element adopts the folding membrane filter element structure form from its filtration principle. At the same time, according to the different requirements of the field process, such as the flow rate, the amount of pollution and temperature resistance, you can choose two ways of longitudinal pleating and horizontal pleating.
Longitudinal discount design and process: Generally as the core part of a large flow filter, its discount process increases its filter area in a limited space, and folding technology can ensure that each unit area of the filter medium has a fluid through. The folding design increases the effective filtration area, making the filter element more efficient, tight and strong contaminant capacity.
Large flow filter is mainly used as the reverse osmosis system pre-security filter, the conventional use of large flow filter 5um, under the same flow, only need to install a smaller number of filter elements, to the system maintenance and filter replacement work brings great convenience; The absolute precision filtration characteristics can effectively remove trace suspended matter in water, prevent solid impurity particles from entering the RO reverse osmosis system, extend the service life of expensive reverse osmosis membrane elements, and ensure the stable operation and water production of the reverse osmosis pure water system.
Horizontal discount large flow filter: is an external pressure type (from the outside to the inside) flow mode, the filter medium is polypropylene material, the fiber tissue is loose, the high porosity increases the impurity capacity, has a deep three-dimensional filtration effect is a compound deep interception, his filter area is larger than the longitudinal discount filter area. That is, larger particle impurities are trapped on the surface of the fiber, while fine particles are trapped deep in the filter material.
Large flow filter precision is wide, 0.1 micron to 100 micron can be selected, generally 5 microns is more commonly used.
