RU2701002C1 - Method for integrated water treatment using ozone - Google Patents

Abstract

FIELD: water and air purification technology.

SUBSTANCE: invention relates to complex purification of water. Method for complex water purification using ozone involves passing water through a module of centrifugal filters with electromagnetic elements, a battery of hollow fiber ultrafilters and a sorption filter. Ozone received from air in ozone generator is fed into water fed into storage tank after cleaning on centrifugal filter module, as well as into water flow ahead of battery of hollow-fiber ultrafilters and sorption filter.

EFFECT: use of the method will make it possible to improve quality of treated water due to its treatment with ozone and to increase cycle and service life of the processing station, and also to increase efficiency.

1 cl, 1 dwg

Description

The invention relates to water treatment, and more specifically to a comprehensive water treatment.

Known methods of water treatment (see RF patent No. 0002247078, registration number of the application of the Russian Federation No. 200318649 dated June 24, 2003 according to CL 7C02F 7/46 and the patent of the Russian Federation No. 2340893, registration number of the application of the Russian Federation No. 2011111954/05 of March 29, 2010 according to class C02F 9/02, C02F 7/28), including the simultaneous purification of water from suspended particles, its disinfection, decontamination and decontamination.

The disadvantages of the first method of water purification are the limited ability to purify high-water waters and the low reliability of its neutralization from spore forms of microorganisms and potent toxic substances (SDYA).

The main disadvantages of the second method of water purification are the low efficiency of washing ultrafilters in the treatment of high-water waters and, as a result, a short inter-regeneration cycle and a progressive decrease in plant productivity, as well as an insufficiently high service life of the sterilizing device.

There is also known a method of complex water treatment (prototype - see RF patent No. 2524939, registration number of the RF application No. 2012144212/05 of 10.17.2012, class CO2F 9/12, CO2F 1/28, CO2F 1/32), including passing water through a module of centrifugal filters with electromagnetic elements into a storage tank with simultaneous treatment of water with a chlorine-containing preparation obtained in the electrolyzer by electrolysis of sodium chloride, and a battery of hollow fiber ultrafilters and a sorption filter, after which the final treatment of water is carried out on a photocatalyst colo nke and in the bactericidal module by ultraviolet radiation.

The main disadvantage of this method is the use of a chlorine-containing preparation for water treatment, since during the interaction of chlorine with highly active toxic substances, primarily with agro-chemicals, unpredictable toxic substances are formed, which significantly reduce the operating time of the sorption filter, which entails a decrease in performance station.

The claimed invention is aimed at solving the problem of increasing the filter cycle of the sorption filter and the productivity of the station.

The solution to this problem is achieved by the fact that the processing of the source water is carried out by ozone obtained from air in an ozone generator. Ozone is supplied metered into the water stream to the storage tank after purification on the centrifugal filter module, as well as to the water stream in front of the hollow fiber ultrafilter battery and sorption filter.

Using the proposed method of integrated water purification will improve the quality of the produced water due to its treatment with ozone, and will increase the inter-regeneration cycle and the service life of the station by one and a half times, which will increase the productivity of the station by 25-30%. In addition, the use of ozone for water treatment instead of a chlorine-containing preparation will reduce the transportable supply of consumables (table salt and sorbent) by 30%.

The invention is illustrated in the drawing, which shows a schematic flow diagram of the proposed method for integrated water treatment, including the following main elements: 1 - water intake device; 2, 3, 4, 5 - centrifugal pumps; 6 - module of centrifugal filters with electromagnetic elements; 7, 8, 9 - storage tanks; 10 - line discharge of washing water; 11 - system of automatic washing of the battery of hollow fiber ultrafilters; 12 - a battery of hollow fiber ultrafilters; 13 - sorption filter; 14 - ozone generator; 15 - ozone supply line; 16 - electrolyzer; 17 - line for the issuance of purified water to the consumer.

In the proposed method of purification, water goes through several stages of its treatment.

Water from the source through the intake device 1 is pumped 2 under pressure to the centrifugal filter module 6, rotating in an electromagnetic field driven by electric motors. The filters 6 are the main process of purification of water from suspended particles, as well as partial purification from microorganisms, poisonous and radioactive substances.

Then the water is supplied to the storage tank 7, where the initial purification of water from various types of microorganisms by ozone from the air in the ozone generator 14 takes place. Then, by pump 3, the water from the tank 7 is fed to the battery of hollow fiber ultrafilters 12, where the final purification from suspended particles to turbidity is carried out not exceeding the requirements for drinking water quality (not more than 1.5 mg / l).

At the same time, a partial disinfection, neutralization and decontamination of water takes place on the ultrafilter battery 12.

From the ultrafilter battery 12, water is supplied to the sorption filter 13, and partially to the storage tank 8. The water collected in the storage tank 8 is intended to wash the ultrafilter battery 12. At the same time, ozone is dosed into the water stream supplied to the sorption filter. In the sorption filter 13 there is a final purification of water from organic compounds, bacteria, viruses and their waste products, as well as from OM, potent toxic and radioactive substances. The purified water is supplied to the storage tank 9, where it is conserved with the chlorine preparation obtained in the electrolysis cell 16, after which water is supplied to the consumer through a pipe 17.

Claims (1)

A method of complex water treatment using ozone, including passing water through a centrifugal filter module with electromagnetic elements, a hollow fiber ultrafilter battery and a sorption filter, characterized in that the water entering the storage tank after cleaning on the centrifugal filter module, as well as the water flow before a battery of hollow fiber ultrafilters and a sorption filter, serves ozone obtained from air in an ozone generator.

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