Complex water treatment method

FIELD: chemistry.

SUBSTANCE: invention relates to water treatment and particularly to complex water treatment. Raw water is first passed through a module of centrifugal filters 3 with electromagnetic elements, after which the water is fed into a storage container 4 while simultaneously adding a chlorine-containing preparation obtained an electrolysis cell 15 via electrolysis of table salt; the water is the fed onto an array of hollow-fibre ultrafilters 8, after which the water undergoes final treatment on a photocatalytic column 11 based on nanocrystalline titanium dioxide and ultraviolet radiation in a bactericidal module 16.

EFFECT: use of the disclosed method increases efficiency of the complex water treatment equipment one and half times without increasing dimensions thereof and operational life at least two-fold.

1 dwg

 

The invention relates to water purification, and more specifically to means of complex water treatment.

A method of processing water (see RF patent №0002247078, the registration number of the application of the Russian Federation No. 200318649 from 24.06.2003, CL 7 02F 1/46), including simultaneous water purification, disinfection, neutralization and decontamination.

The disadvantages of this method of water purification is the limited ability of cleaning vysokomernoy water and low reliability of its clearance from the spore forms of microorganisms and neutralization from highly toxic substances (VP).

There is also known a method of integrated water treatment, implemented in the "water treatment plant" (prototype - see RF patent №2430893, the registration number of the application of the Russian Federation No. 2010111954/05 on 29.03.2010, CL 7 02F 9/02, 02F 1/28), comprising a pump source water, the battery hollow fibre ultrafilters, line exhaust concentrate, line drainage of the filtrate, tank leachate pump filtrate, the sorption filter, sterilizing device and the unit.

The shortcoming is the low efficiency of shading ultrafilters and, as a consequence, the short period between regenerations and the progressive reduction of plant capacity, and the lack of a high service life of the sterilizing device.

The claimed invention is directed to solved the e tasks increase mezhregionalnogo cycle ultrafilters and the station as a whole and increase its performance.

The solution of the stated problem is achieved by the fact that the treatment of the water before the battery hollow fibre ultrafilters install the module centrifugal filters with electromagnetic elements, and sterilizing the device replaced photocatalytic column based on nanocrystalline titanium dioxide, ultraviolet germicidal module and the cell.

The use of the proposed method of integrated water treatment will allow without compromising the quality of granted water to increase the period between regenerations and resource work station at least twice and to improve the performance of not less than one and a half times.

The invention is illustrated by the drawing, which shows a schematic diagram of the proposed method of integrated water treatment, including the following key elements:

1 - intake device; 2, 5, 9, 14 centrifugal pumps; 3 - module centrifugal filters with electromagnetic elements; 4, 10, 13 - accumulation vessel; 6 - line wash water discharge; 7 - automatic washing system battery hollow fibre ultrafilters; 8 - battery hollow fibre ultrafilters; 11 - photocatalytic column; 12 - adsorber; 15 - electrolyzer; 16 - ultraviolet germicidal module; 17 - line issue of safe drinking water; 18 - line submission hlorosoderzhashie.

In the proposed method of processing water goes through several stages of refinement.

Water from surface or underground source through the intake device 1 is fed by a pump 2 pressure in the block centrifugal filters 3, rotating in the electromagnetic field due to jets of water. Filter 3 is the water purification from suspended particles, and partial purification from microorganisms and toxic substances (S). Then, water is supplied to the accumulating tank 4, while the flow is supplied chlorine-containing preparation obtained by electrolysis of salt. Next, the pump 5 water is supplied to the battery ultrafilters 8, where the final purification from suspended particles to turbidity not exceeding the requirements for drinking water quality (not more than 1.5 mg/DM3).

At the same time on the battery ultrafilters 8 is a partial disinfection, neutralization and decontamination water. With battery ultrafilters 8 water is supplied to the photocatalytic column 11 and partially the holding tank 10. Water collected in the storage tank 10, is designed for washing battery ultrafilters 8 by means of pump 9 and the automatic washing system 7 battery ultrafilters 8. On photocatalytic column 11 is the final purification of water from organic compounds, bacteria is, viruses and their products, after which the water is supplied to the adsorber 12, where her final cleaning OV, VP and radioactive substances. Clean water flows into the accumulation tank 13 and the pump 14 is fed to ultraviolet germicidal module 16, where her final disinfection. Output stream 18 is injected chlorine-containing preparation from cell to conserve issued by the water.

The method of complex treatment of water comprising passing the water through a battery of hollow fiber ultrafilters and sorption filter, characterized in that the source water previously passed through the module centrifugal filters with electromagnetic elements, and then served in cumulative capacity with simultaneous feed water chlorine-containing preparation obtained in the electrolytic cell by the electrolysis of salt, then the water is fed to the battery hollow fibre ultrafilters, and then perform the final treatment on the photocatalytic column based on nanocrystalline titanium dioxide and ultra-violet radiation in the germicidal module.



 

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FIELD: process engineering.

SUBSTANCE: invention can be used for purification of natural waters at production of drinking water. Clarification is made by forcing water through the layer of foam bricks or foamed polystyrene while filtration is performed by forcing this water through quartz sand with grain size of 0.3-1.5 mm and gravel of 2-32 mm grains. Sorption is made on granulated activated carbon with grain size of 0.5-5 mm to decontaminate initial water by primary chlorination with sodium hypochlorite containing up to 19% of active chlorine in amount of 0.9-1.3 mg/l. Then, water is processed by polarisation current of carbon-graphite electrode self-organisation in aluminium oxyhydrate medium for 50 minutes and by aluminium sulphate in amount of 1.8-2.5 mg/l and flocculating agent POLYDADMAX, series FLOQUAT FL 45 in amount of 0.1-0.4 mg/l. Now, secondary chlorination is performed by sodium hypochlorite containing up to 19% of active chlorine in amount of 3-5 mg/l.

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1 dwg, 2 tbl

FIELD: chemistry.

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2 cl, 17 ex, 1 tbl

FIELD: chemistry.

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2 cl, 2 dwg, 1 ex

FIELD: chemistry.

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1 dwg, 2 tbl, 9 ex

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FIELD: chemistry.

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FIELD: chemistry.

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3 tbl, 3 ex

FIELD: chemistry.

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26 cl, 26 dwg, 1 tbl

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1 tbl, 1 ex

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3 dwg

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2 tbl, 4 ex

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25 cl, 9 dwg, 5 tbl

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3 cl, 4 ex

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14 cl, 4 dwg

FIELD: physics, acoustics.

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9 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to sorption extraction of caesium radionuclides from aqueous solutions. The method of extracting caesium radionuclides includes filtering an aqueous solution through a selective sorbent which is iron-potassium ferrocyanide on a support, desorption of caesium from the sorbent with an alkaline solution containing Trilon B and potassium oxalate. The eluate obtained from desorption is further filtered through a sorbent which is nickel-potassium ferrocyanide.

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1 tbl, 2 ex

FIELD: devices for purification of household and industrial sewage.

SUBSTANCE: the invention is dealt with devices for purification of household and industrial sewage and intended for electrical and cavitational treatment of sewage containing a large quantity of organic compounds. The device for purification of sewage consists of a body made out of a dielectric material partitioned by diaphragms for two electrode chambers and one working chamber, that contains a filtering material. The electrode chambers have cavitational field sources installed and the working chamber is supplied with a the bubbler installed in it. The technical result consists in an increase of recuperation of the filtering material at the expense of application of a cavitational field to it, decrease of the microbiological semination, and an increase of cavitational effect on particles.

EFFECT: the invention ensures an increase of the filtering material recuperation, decreased microbiological semination and increased the cavitational effect on particles.

1 dwg

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