SU1433907A1 - Apparatus for electrochemical treatment of waste water - Google Patents

Abstract

The invention relates to wastewater treatment plants by electro-co-coagulation followed by settling and allows an increase in the degree of water purification. The device includes a vertical settling tank 1, a circulation pipe 2, a conical-cylindrical perembrod 3, a combination of modules

Description

2 "

with

about

15

W

15

13

"

/ 7

4, 5. Pipe 2 consists of a flotation zone .. OD1I 6, supply search for nozzles 7, electrolysis zone 8 with electrode system 9, - current supply of auxiliary electrodes 10, 11 ,, grid-cassette 1 2 filled with metal chips 13 with transverse dielectric perforated partitions 14 and waterproof partitions 15. Centrally with pipe 2 are the feed pipelines of purified water 16, compressed air

17, wastewater 18. In the upper part of the pipe 2 below the foam level, overflow pockets 19 are arranged with an annular discharge 20, a slit 21, an annular 22 partitions, as well as froth-removing blades 23 and a tangential froth-removal tray 24. In the sump 1 there is an annular chute 25 for collecting and pipe 26 for draining purified water, sludge removal pipeline 27, 1 sludge.

one

The invention relates to devices for the electrochemical treatment of industrial and natural wastewater, highly concentrated on colloid-dispersed impurities, organic matter and fats.

The purpose of the invention is to increase the degree of wastewater treatment.

The drawing shows a diagram of the apparatus for electrochemical treatment of wastewater.

The device includes a vertical settling tank 1 that is coaxial with respect to each other, an independently installed central circulation pipe — an electrofloat coagulation chamber 2, which guides a cone-cylindrical partition 3, a combination of modules with reciprocal tilt plates 4 and 5. The circulation pipe consists of a flotation zone 6 , tangential nozzles 7 of the input of treated water, electrolysis zone 8 with a vertically mounted removable electrode system 9, made in the form of concentrically located top cylinders 10 and rod 11, dielectric mesh in the form of a cylindrical cartridge 12 filled with particles of conductive material metal chips 13 transverse horizontal dielectric perforated partitions 14 along the height of electrodes 10 and 11 rigidly connected with perforated waterproof partitions 15 outside the cartridge 12. Together with the circulation pipe 2 centrally sized

five

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five

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five

Removable pipelines for supplying purified water 16, supplying compressed air 17, supplying wastewater 18.

In the upper part of the central circulation pipe 2 below the level of the foam, an annular overflow pocket 19 is arranged with an annular discharge 20, a slot 21 and an annular 22 partitions, as well as four froth-removal blades 23 dp of foam and a tangentially located foam extraction tray 24.

In the sump 1, there is an annular gutter 25 dp of collection and a nozzle 26. dp drainage of purified water, pipe 27 removing sludge.

The device works as follows.

Purified water enters the electrolysis zone 8 to the removable electrode system 9 through conduit 16, Me shavings as electrolytes dissolve and fill volume decreases, the cassettes from the initial 100% load are kept in constant motion due to the directional flow of water created baffles 15, located at the same level with transverse horizontal perforated baffles 14, and the gaseous electrolysis products produced in the operating mode, as well as using compressed of air supplied through conduit 17 during startup and periodically while reducing flow in the operating mode. This prevents the splintering of the conductive chip material 13

flaking coagulum and passivation of electrodes reduces energy losses and allows efficient use of electroflotation. The moving chip 13 has a depassivating effect, acts as an abrasive and provides reliable contact with the current-carrying electrical part of the settler (zone of clarification),

In the cylindrical part of the settling tank, the clarified water passes through a combination of modules with a mutually opposite inclination of the plates 4 and 5 for effective clarification due to a more complete filling of the volume, collected by the 10 and 11 electrodes. The dielectric network is discharged in the form of a cylindrical cartridge 12 with a nipple 26. Perforated transverse horizontal partitions 14 along the height of a vertical current-carrying electrode 11 provide an even distribution along the entire surface of the chip 13, especially as it electrodissolution by aiding

Thus, the use of the proposed apparatus makes it possible to ensure the operation of the apparatus in a continuous 15 and stable mode, to increase the degree of purification and to reduce energy waste when using anodorodable chips due to the relative position of the elements in the electrostable work.

Water, coagulated, and ha-20 ° system; simplify with constructivized electrolysis products; it is intensively mixed with waste water coming through the supply line 18 through the chain; tangential nozzle 7, 25

To remove foam in the upper part of the circulation tube 2 protruding above the settling tank 2, the foam removal inclined tray 4 is tangentially arranged. parts,

VIA centrifugal pump), one of which is made in the form of a layer

Purified water from the flotation chamber of particles from a conductive material,

6 is discharged under the foam level from the dielectric set, the inlet fitting installed in the circulation pipe, and the outlet fitting located on the sump and a device for the removal of foam, which differs from

Through the overflow pocket 19 through the annular overflow 20 under the slit partition 21 and through the annular partition 22, the sprinkling arrangement and the height of the partitions 21 to 22 provide a higher level of foam that is sufficient to increase the degree of cleaning precisely to prevent possible waste water. secondary contamination of purified water with photo slime.

Filled in the form of a dielectric cylindrical perforated cassette divided by height horizontal. Removably mounted centrally

arranged circular circulation tube 2 45 with perforated dielectric

and the conveying pipes 16, 17, 18 of purified water, air and waste water, respectively, make it easy to remove the entire system, simplifying the operation of partitions and filled with current-carrying particles with a central rod-type power supply, and a coaxial cylinder from an electrically conductive

tahshchyu and revision of the apparatus, as well as from the material, and the space between its preparation on the basis of a standard bilge cylinder and a cassette is equipped with a hydraulic unit, lytically impermeable partitions,

From the circulation pipe 2, water in the same plane with relain enters the conical part with horizontal perforated diaplastic tank 1 inside the cone-cylinder 1 and gg electric partitions, patrol partition 3, the conical input joints are located under the electrode pressure bar. The partitions 3 prevent the system, and in the upper part of the compass - the ingress of unclarified water and the choke pipe is placed overflow dispersed vzmuchivaemyh sediment in the device and sump additionally

In the cylindrical part of the settler, the clarified water passes through a combination of modules with a mutually opposite inclination of the plates 4 and 5 for effective clarification due to a more complete filling of the volume, is collected in the annular chute 25 and is discharged through the nozzle 26.

Thus, the use of the proposed apparatus makes it possible to ensure the operation of the apparatus in continuous 5 and stable mode, to increase the degree of purification and to reduce energy consumption when using anodorodable chips due to the relative positioning of elements in the electrode solution and operation of the apparatus by installing a removable electrode system and a circulation pipe with pipelines.

Claims (1)

Invention Formula I, Electrochemical wastewater treatment apparatus containing a sump with a coaxially located the purpose of increasing the degree of wastewater treatment, the system of electrodes is filled in the form of a dielectric cylindrical perforated cassette, divided by the height of horizontal partitions and filled with current-carrying particles with a central rod-type current lead, and a coaxial cylinder of electrically conductive .1433907 j6 provided with a cylindrical partition, 2, The apparatus according to claim 1, distinguishing having a cone-shaped extensions and with the fact that the circulation the upper and lower parts, with the cir-pipe and pipelines made removable pipe placed inside 1, and the device for removal of foam lindric septum, and the system is implemented in the form of tangentially naplanes with a mutually opposite inclined chucking-out tray, provided with a slope worn by blades.