SU1386234A1 - Filter for purifying water - Google Patents

Abstract

The invention relates to water purification filters and allows to simplify the operation of the filter and improve the quality of regeneration. The filter consists of a body 1 with a side pocket 7, a system for top washing 9 having perforated pipes 11 with vanes 13 and tapes 14 of hydrophobic material for collecting foam. The uniform rotation of the perforated pipes 11 with ribbons 14 is achieved by supplying the source water from the nozzle 5 to the blade 13. In re mode

Description

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the generation of a part of the washing water is supplied to the system for the upper washing 9, as a result of which the accumulated contaminants from the porous material of the tapes and the mixing take place

the upper layer of the filtering load with the help of a rotating plume of water curtains formed by jets of water flowing out of the nozzles of the washing tubes 1 C. f-ly, 2 silt

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The invention relates to a technique for filtering liquids, namely, filters equipped with an over-flush system, and can be used in natural and wastewater treatment plants.

The purpose of the invention is to simplify operation, improve the quality of regeneration and eliminate tube deflection.

FIG. 1 of {3filter filter, longitudinal section, in figure 2 - the same, top view.

The filter includes a housing 1, a collection and distribution system 2, a loading 3, a pipeline 4 for supplying purified water with a nozzle 5 located in the housing and a branch pipe 6 attached to it, located in the side pocket 7 and having a throttle float regulator 8 , a system 9 for top washing, including radially mounted perforated pipes 11 with rotating nozzles 11 with nozzles 12 and blades 13. Along pipes 11, tensioned belts 14 of hydro-fob material, for example, polyurethane foam,

The system for top flushing is provided with a support ring 15 designed to prevent the perforated pipes 11 from bending and ensuring their rotation in a horizontal plane during which the blades slide along the ring.

The filter works as follows.

During filtration. The floating substances accumulating on the water surface reach the lower edges of the ribbons 14 and, due to the surface tension forces at the phase boundary and the capillary properties of the micropores, begin to fill the pore space of the tape material. The reserve of protective action (capacity) of the porosity of the material is calculated on the collection of all

TH volume of foam accumulated in the filter during the filter cycle. The supply of source water through the nozzle 5 causes a circular movement of the surface layer of water in the filter and due to the rotation of the blades 13 causes a slow rotation of the perforated pipes 11 along the support ring 15 and a uniform

Foaming over the entire area of the filter. In the initial period of filling the filter with the source water, the float of the throttle-float regulator 8 installed on the nozzle 6 is

in the lower position, in which the throttle valve on the nozzle 6 is open and the bulk of the incoming water is directed to the pocket. When raising the float together with the water level to

The upper limit of the throttle valve completely overlaps the branch in the pocket and the entire volume of water enters the filter housing. When switching the filtering apparatus

On the regeneration mode, a part of the washing water is supplied to the upper washing system 9, as a result of which the accelerated rotation of the washing pipes and the intensive removal of

accumulated foam from the material of the tape by washing it with jets of water coming from the nozzles 12. This forms a rotating flare of water curtains, which provides additional displacement of the upper layer of the fixed (at the beginning of the washing process) or suspended in the main stream of wash water filter loading during the process) ..

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Claims (2)

A water purification filter, comprising a housing with a side pocket, a pipeline for supplying the water to be purified, and a system for top washing. having perforated pipes for supplying wash water with nozzles installed radially on a rotating plate, characterized in that, in order to simplify operation and improve the quality of regeneration, the system for the top wash is equipped with tapes of hydrophobic porous material attached to perforated pipes, and blades attached to the free ends of perforated pipes, pipeline . one ..E for the supply of purified water is provided with a nozzle located in the filter housing at the level of the blades, and connected to the nozzle by a branch pipe located in the side pocket and having a throttle-float regulator, 2. Filter POP.1, characterized in that, in order to eliminate tube deflection, it is provided with a support ring mounted horizontally, with the upper parts of the blades located on the ring