Filtration equipment with swirling backwashing function, filtering method thereof, and backwashing method

Abstract

The invention discloses filtering equipment with a vortex backwashing function, a filtering method and a backwashing method of the filtering equipment. The filtering equipment comprises a filter tank, wherein a sieve plate and a walnut shell filter material which is arranged on the upper layer of the sieve plate are arranged in the filter tank; the filter tank comprises a top opening and a bottom opening; a section of connection pipe is arranged at the top opening; the top opening is connected with a water inlet pipe through the connection pipe; the filtering equipment also comprises a cleaning pump and a sieve pipe; the connection pipe is also connected with a pumping opening of the cleaning pump through a cleaning pump inlet pipe; a first valve is arranged in the connection pipe; one end of the sieve pipe is connected with a discharge hole of the cleaning pump; one path of the other end of the sieve pipe is connected with a blow-off pipe; the other path is connected with a jet pipe; a second valve is arranged in the blow-off pipe; a screen is arranged at the joint of the sieve pipe and the blow-off pipe; and a cleaning water inlet connected with a cleaning water pipeline is also formed in the top of the filter tank. According to the filtering equipment disclosed by the invention, the material running phenomenon is avoided, the filter material is thoroughly regenerated through arrangement of the cleaning pump, and the service life of the filter material is prolonged.

Description

technical field

[0001] The invention relates to a filter device, in particular to a filter device with a swirl backwash function, a filter method, and a backwash method. Background technique

[0002] Due to its own hardness, ideal specific gravity, porosity and multi-facetness, and special physical and chemical treatment (to remove its pigment, fat, grease, and charged ions), the walnut shell filter material has a strong performance in water treatment. Excellent oil removal performance, solid particle removal, easy backwashing and other excellent properties, walnut shell filter media have been widely used in oily sewage treatment in oil fields, industrial wastewater treatment and civil water treatment. The walnut shell filter has a good effect of filtering oil in water, but there are many problems in the actual operation, the most prominent of which is the running of the filter material during the backwashing process, the filter material is not cleaned thoroughly, and the fi...

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