SU1005831A1 - Water cleaning filter - Google Patents

Abstract

WATER FILTER FOR CLEANING WATER, comprising a body with a granular load, a distribution system installed above the load, troughs with overflow edges located above it, and a pump having suction and discharge pipes, the latter being connected to a distribution system, characterized in that in order to reduce the flush flow rate water, the end of the suction pipe is located below the overflow edges of the gutters.

Description

The invention relates to purification with | -; first water and after-treatment of waste liquids;) can be used as with pro:. new, and in the reconstruction ..y; uecTiiV OUJ, Hx water treatment plants.

A known filter for water purification, comprising a body with a granular load, in the lower part of which drainage pipes are laid for draining the filtrate and supplying wash water. A gutter is installed above the load, communicating through a disputable pocket adjacent to the hull with a supply pipe of the treated Li. The regeneration of the load is carried out by weighing it in an upstream of water i1.

The disadvantage of the filter is low effective:; :), - flushing of the load, especially in high-water waters, debris BMHH, water, water softening by liming.

A filter for water purification is also known, which includes a body with a granular load, in the lower part of which there are pipes of a drainage system for draining the filtrate and supplying wash water, and distribution system pipes for supplying compressed air to the load. Above the load, install the gutters, communicating through the collection pocket adjacent to the housing, with the pipeline for feeding the treated water 2.

This filter provides high efficiency of washing the contaminants from the grains, regardless of the quality of the source water.

However, the filter is characterized by structural complexity due to the presence in the lower part of the load of two autonomous drain / button-distribution systems. For the operation of the filter, a blower, a compressor to special air ducts are necessary, which leads to an increase in the cost of water purification on the filter.

Closest to the invention is a water purification filter comprising a granular loading body, above which a distribution system for upper flushing and a chute is installed, communicating through the collecting channel adjacent to the body, to the treated water supply line, and connected by a pressure pipe to the distribution system, and a suction pipe to the clean water tank 3.

The known filter provides high efficiency of washing the contaminants from the loading grains, regardless of the quality of the source water, is structurally simple and reliable in operation.

The lack of a filter is a high consumption of water for the regeneration of the load, due to the fact that the upper flushing requires additional consumption of flushing, i.e., clean water.

The aim of the invention is to reduce the water consumption for regeneration of the load.

The goal is achieved by the fact that the water purification filter containing

a granular loading housing, a distribution system installed above the loading, overflowing chutes located above it, and a pump having suction and discharge pipes, the latter being connected to the distribution system, the end of the suction pipeline is located below the overflow edges of the chutes.

FIG. 1 shows the filter, a cross-section; in fig. 2 is a longitudinal section.

5 The filter includes a housing 1 with a granular load 2, above which pipes of the distribution system 3 for the upper flushing and the chute 4 are installed. The chutes 4 communicate via a collecting duct 5 adjacent to the housing 1 with the feed water supply pipeline 6. The pump 7 is located outside the housing 1 and connected to the discharge pipe 8 with the pipes of the distribution system 3, and the suction pipe 9 to the space between the grooves 4. In the lower part of the load 2 are laid

 pipes of the drainage-distribution system 10 communicating through the collector 11 with the filtrate drain line 12 and the flushing water supply line 13. The collection channel 5 is connected to the wash water outlet line 14.

The filter works as follows.

Filtering the treated water

implemented; from according to the generally accepted method

pass it through a fixed load

from top to bottom.

“But when the filter cycle is completed, the granular loading is regenerated. Regeneration of loading is carried out in two stages.

At the first stage, the valves on the pipelines 6, 12, 13 and 14 are closed and the pump 7 is put into operation. Since during filtering from top to bottom, the bulk of the delayed contaminants falls on the first (along) water flow (upper) layer of the load, water strings, coming out with large the speed (20-25 m / s) of the holes in the distribution pipe of the vIital system 3 destroys the film on the loading surface and removes contaminants from the grains of the upper layer. In this case, due to the continuous recirculation of water, both the degree of dispersion of the washed contaminants and the

0 reduces the water flow for the top flush.

In the second stage, the pump 7 is turned off and the valves on the pipelines 13 and 14 are opened. The flow of water supplied from the bottom upwards with the intensity necessary for

5 25-30 ° / o of the spreading of the filtering load, carrying out the loads washed from the grains and dispersed (still at the first stage of regeneration) contamination through the channels 4,

collecting channel 5 and further along the pipeline 14 to the sewage system.

After regeneration, the value of residual impurities in the upper loading layer does not exceed 0.3–0.5% of the loading weight; on the loading surface, there are no kakielibo lumps.

Thus, the feasibility and technological advantages of the proposed filter consist in reducing by 20-25% the water consumption for regeneration of the load. At the same time, the concentration of suspended solids in the wash water increases, which simplifies cleaning of the wash water and reduces its cost.

Ф0 5

5FF.

Claims (1)

A WATER PURIFICATION FILTER, comprising a granular loading housing, a distribution system mounted above the loading, gutters with overflow edges located above it, and a pump having suction and discharge pipelines, the latter being connected to the distribution system, characterized in that, in order to reduce the flow rate of the washing water, the end of the suction pipe is located below the overflow edges of the gutters. Figure 1