RU168904U1 - WATER TREATMENT DEVICE - Google Patents

Abstract

The utility model relates to devices for treating natural and industrial waters, as well as for the purification of waste liquids. A water purification device is provided that includes a housing divided by vertically mounted partitions into a flocculation chamber, a horizontal settling tank and a clarified water collecting tank, located at the bottom flocculation chambers of one or more perforated water supply pipelines for cleaning, and supplying a horizontal settler in its upper part with a distribution system a clarified clarified water collection, in which the clarified water collection tank is additionally equipped with immersion membranes and provided with a pipe to remove sediment from washing the membranes. It is preferable that in the water treatment device, the dispersed clarified water collection system is configured as at least one horizontal settling tank perforated pipeline or gutter. When using the inventive technology, water in all quality indicators is fully consistent La requirements for water potable purpose. At the same time, the water consumption for membrane regeneration was 2.8 times lower than on filters that should be used for the post-treatment of water obtained using traditional technology, while the area needed to accommodate the facilities required for water treatment was reduced.

Description

000000 A useful model relates to devices for the purification of natural and industrial waters, as well as for the purification of wastewater, and is intended for use in water purification technology for domestic, drinking, and industrial purposes.

Water purification devices are widely known, including a housing divided by vertically mounted partitions into a flocculation chamber, a horizontal sump, and a clarified water collection tank. In this case, the flocculation chamber in the lower part is equipped with one or more perforated water supply pipes for purification [V.A. Klyachko, I.E. Apeltsin. "Purification of natural waters." Publishing house of literature on construction, M. 1971, pp. 140-144].

However, the known devices in most cases are ineffective especially when treating low-turbid waters in the winter, when the flocculation process is very sluggish, and the formed flakes are characterized by small size and insignificant hydraulic size, as a result of which they are poorly separated from water and then in significant quantities with flow The water to be treated is taken out to the clarified water collection tank, after which its subsequent purification on quick filters is required. The need to use fast filters, occupying large areas, leads to a significant increase in the cost of water treatment, in addition, due to the high mud load that comes with water to the filters from the sump, the percentage of water required to regenerate the load is about 20% of the used.

The closest to the proposed technical essence and the achieved effect is a water purification device comprising a housing divided by vertically mounted partitions into a flocculation chamber, a horizontal settling tank and a clarified water collection tank. At the same time, the flocculation chamber in the lower part is equipped with one or more perforated pipelines for supplying water for treatment, and the horizontal settler in the upper part is equipped with a dispersed collection system for clarified water [SNiP 2.04.02-84 “Water supply, external networks and structures”. Stroyizdat, M. 1985, p. 6.75].

This device, compared with the ones considered above, provides a slightly better degree of water purification by providing conditions for a more uniform separation of flakes from water along the length of the horizontal settler and allows to reduce the water consumption for regeneration of the load in them is reduced to 8-12%. At the same time, the degree of water purification achieved by using this device is not high enough and does not allow us to abandon the need for its purification using quick filters.

The technical task of the proposed technical solution is to create a more efficient installation for water purification, which would make it possible to obtain high-quality water while reducing water consumption for own needs and reducing the area of treatment facilities at the station.

The technical result is achieved in that in a water treatment device comprising a housing divided by vertically mounted partitions into a flocculation chamber, a horizontal settling tank and a clarified water collection tank, with one or more perforated water supply pipes for purification located at the bottom of the flocculation chamber, and supplying horizontal clarifier in its upper part with a system of dispersed collection of clarified water, the capacity for collecting clarified water is additionally equipped Submersible membranes and provided with a conduit for removing the precipitate formed by washing the membranes.

Preferably, in the water treatment device, the dispersed collection system of clarified water is made in the form of at least one perforated pipe or trough located along the horizontal sump.

In FIG. 1 shows a cross section of a device for water purification, including:

1 - housing; 2 - a partition; 3 - flocculation chamber; 4 - horizontal sump; 5 - capacity for collecting clarified water; 6 - pipeline supplying water for cleaning; 7 - pipeline dispersed collection of clarified water; 8 - a block of immersion membranes; 9 - pipeline drainage clarified water; 10 - pipeline drainage of contaminated water from flushing membranes.

The installation consists of a casing 1, divided by partitions 2, mounted on the lower and upper parts of the casing and not overlapping its inner part in height, to a flocculation chamber 3 and a horizontal settler 4, as well as a container for collecting clarified water 5. The chamber 3 in the lower part is equipped with a pipeline water supply for treatment 6, as a rule, perforated, and the sump 4 is connected in the upper part with the capacity for collecting clarified water 5 using at least one pipe dispersed collection of clarified water 7, which It can also be equipped with perforations or gutters.

In the tank 5, a block of immersion membranes 8 is installed in the path of the water flow, to which a clarified water drain pipe 9 and a contaminated water drain pipe from flushing the membranes 10 are connected. The pipeline 10 is generally perforated.

The device operates as follows. The source water with the reagents necessary for purification preliminarily introduced into it is piped 6 to the lower part of the flocculation chamber 3, from where, together with the flakes formed, it is transferred via pipeline (s) 7 or the trough to the horizontal settler 4. The main part of the previously formed flakes is deposited on the bottom of the horizontal sedimentation tank 4, from where it is periodically or constantly removed, and partially clarified water is transferred by pipeline 7 to the tank of clarified water 5, where it is further treated on immersion membranes 8 The purified water through the pipeline 9 is discharged from the device, from there the sediment from washing the membranes is removed through the pipeline 10.

The industrial applicability of the device is illustrated by the following example.

Example. Water from a surface source at a temperature of 6.1-6.3 ° C, color 125-140 degrees, turbidity 7.6-8.1 mg / l, oxidizability 14.6-16.2 mg o _{2 /} l with microbial indicators : OKB 178-203 CFU / 100 ml, TKB 193-225 CFU / 100 ml was subjected to purification on a traditional installation - (the closest analogue is a series of experiments 1) and an installation additionally performed according to the claimed technical solution, the diagram of which is given above (series of experiments 2 )

Two series of experiments were carried out, in each of which the source water was subjected to the introduction of coagulants and flocculants. The dose of coagulant - aluminum sulfate was 14.5 mg / l (according to AL ₂ O ₃ ), and the dose of flocculant PAA - 0.25 mg / l. In both cases, the installation capacity was 1.2 m ³ / h.

The results of the experiments are shown in table 1.

At the same time, additional experiments showed that when partially purified water (in accordance with the first series of experiments) was received on a model of a filter loaded with quartz sand with a particle size of 0.8-1.2 mm to a height of 1.2 m, the water consumption for washing the filter load makes up about 6.5% of its productivity.

From the above experiments it follows that the known purification technology did not allow water to be purified to indicators normalized for water intended for use in household and drinking purposes, and therefore filtering was additionally required for purification of this water.

On the contrary, when using the inventive technology, water for all quality indicators fully met the requirements for household drinking water. At the same time, the water consumption for membrane regeneration was 2.8 times lower than that on the filters that should be used for the post-treatment of water obtained using traditional technology, the area required to accommodate the facilities required for water treatment was reduced.

Thus, the advantage of the proposed device in addition to compactness is increased efficiency in operation, which allows to provide the necessary degree of purification and disinfection of water, including in the case of its use for household and drinking purposes, as well as low water consumption for own needs.

Claims (3)

1. A device for water purification, comprising a housing separated by vertically mounted partitions on the flocculation chamber, equipped in the lower part with at least one pipe for supplying water for purification, a horizontal settler in its upper part equipped with a dispersed collection system for clarified water and a container for collecting clarified water, equipped with a clarified water discharge pipe, characterized in that the clarified water collection tank is additionally equipped with a submersible membrane unit, which is equipped with a pipe gadfly to remove the precipitate formed by washing the membranes. 2. The device according to claim 1, characterized in that the dispersed collection system of clarified water is made of at least one perforated pipeline located along the horizontal sump. 3. The device according to claim 1, characterized in that the dispersed collection system of clarified water is made of at least one trough located along the horizontal sump.

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