RU2292307C2 - Electro-flotosorption "kefs-1" column - Google Patents

Abstract

FIELD: tire industry; devices for purification of the natural waters and sewage containing the suspended colloid- dispersed emulsified contaminations.

SUBSTANCE: the invention is pertaining to the devices for purification of the natural waters and sewage containing the suspended colloid- dispersed emulsified contaminations and may be used in the processes of the preliminary chemical water preparation and the sewage purification. The electro-flotosorption column contains the vertical sorption column having the body filled with the sorbent or the filtering material with the connecting pipes for the water feeding in and withdrawal. It is additionally supplied with the vertical system of the electro-flotation mounted with the capability of the source water stream movement top-down and arranged either directly in the body of the sorption column above the holey and-or netted partition separating the sorption and electro-floatation parts of the column or in the separate body arranged above the sorption column and connected with it by the adapter unit. At that the system of electro-flotation has the inlet chamber of the source water with the perforated and-or the netted bottom and the horizontal or inclined electrodes, and the slime withdrawal connecting pipe is arranged in the upper part of the column. The technical result of the invention is prevention of pollution of the ion-exchange charging, the increased efficiency of the water purification and productivity of the column.

EFFECT: the invention ensures prevention of pollution of the ion-exchange charging, the increased efficiency of the water purification and productivity of the column.

2 dwg

Description

The invention relates to devices for treating natural and wastewater containing suspended, colloid-dispersed, emulsified contaminants and can be used in the sectors of the national economy in the processes of chemical water treatment and wastewater treatment.

Known pressure filter (analogue) for the treatment of natural and wastewater, comprising a housing with inlet and outlet pipes, a drainage bottom, a granular filter load located on it and a pulsation chamber with a distribution pipe located centrally in the granular load with openings made at an angle to pipe axis.

In order to intensify the regeneration process and simplify the design, the pulsation chamber is made in the form of a cylindrical container with a dielectric tube mounted along the filter axis and connected to a distribution pipe on which electrodes made in the form of cones are connected and connected to a direct current source. SU No. 1549556, 01 D 24/48, 24/46, 1988.

The disadvantage of this analogue is the electrical treatment of only regeneration solutions moving in a central cylindrical pipe, and the water being purified, filtered through a pressure filter, is not subjected to electrical treatment.

The closest technical solution adopted for the prototype is an ion exchange filter containing a vertical cylindrical body with a lid and a bottom, drainage and distribution means, inlet pipes at the top and bottom of the purified water, loaded with an ion exchanger for ion-exchange processes. SU No. 1577805, 01 J 47/02, 1988.

Ionite filters are used in industry for a deeper purification of natural waters and industrial solutions after their preliminary purification by physicochemical methods — coagulation and flocculation — and their transfer to the industrial water supply system of enterprises.

The disadvantage of the prototype is the contamination of the load and the inner surface of the column with suspended particles and biodegradation, which degrade the performance of the ion exchange column.

The main reason for the pollution of ionite filters is the insufficient degree of purification of natural water at the pre-treatment stage. Ion exchange contamination is not acceptable.

Electrical processing is the most effective way to purify water from undissolved substances and microorganisms dissolved in water.

The objective of the invention is to increase the efficiency of sorption water purification, increase the productivity of the ion-exchange columns, prevent pollution of the ion-exchange charge. To solve this problem, it is proposed to place a perforated and / or mesh partition in the ion-exchange column above the upper drainage, which separates the sorption column from its upper part, where an electroflotation system consisting of a receiving chamber with a perforated and / or mesh bottom and two or several unlike electrodes arranged horizontally or obliquely. The housing of the sorption column in the upper part is equipped with a pipe outlet for the sludge.

In the absence of a pre-treatment stage, natural and waste water containing significant amounts of contaminants can be purified by the electroflotosorption method in a device in which an electroflotation system consisting of a receiving chamber with a perforated and / or mesh bottom and two or more unlike electrodes located horizontally or obliquely, installed above the sorption column in a separate housing, which is connected to it by the inlet of the purified water.

The novelty elements of the invention are:

1) equipping the vertical sorption column with a vertical electroflotation system with the movement of the source water flow from top to bottom,

2) the placement of the electroflotation system, consisting of a receiving chamber and electrodes, inside the sorption column in its upper part above the mesh partition dividing the sorption column into upper and lower parts, above the upper drainage,

3) the electroflotation system, consisting of a receiving chamber and electrodes, is installed above the sorption column in a separate housing, which is connected to it by the inlet of the purified water.

The column type device eliminates the formation of sedentary and stagnant zones, maximizes the usable volume and provides a large interfacial contact surface, creates minimal hydraulic resistance to the movement of the fluid flow, takes up a small area, significantly reduces the gas contamination and humidity of the room.

The present invention allows to obtain the following technical result:

- additional purification of the source water from suspended, colloidal, dissolved substances and microorganisms,

- improving the efficiency of sorption water purification and obtaining water of a deep degree of purification,

- an increase in the productivity of the new column, called "KEFS-1 electroflotosorption column".

The creation of the KEFS-1 electroflotosorption column will contribute to the further development of sorption technology for the purification of natural, waste water and industrial solutions.

Figure 1 shows a diagram of an electroflotosorption column KEFS-1, consisting of a housing of a sorption column 7, in the upper part of which there is an electroflotation system including a water inlet chamber 2 with a perforated and / or mesh bottom, electrodes 3 located horizontally or obliquely in the lower part electroflotator, outlet pipe for purified water 4, outlet pipe for purified water 5, air vent 6, outlet pipe 10 and outlet 8 of regeneration solutions, outlet pipe for sludge 9, perforated and / or mesh 11.

Natural water after the pretreatment stage without treatment with chemical reagents enters the KEFS-1 electroflotosorption column through pipe 4, is subjected to electrical treatment and sorption cleaning.

Figure 2 (option 2) shows a diagram of an electroflotosorption column KEFS-1, consisting of a sorption column 7 and an electroflotation system, which is placed in a separate housing 1 connected to the sorption column by a transition device.

Source natural or waste water without pre-treatment is treated with a coagulant and flocculant and enters through a water inlet 4 to a receiving chamber 1 and is subjected to electrical treatment, and then to a sorption column — sorption treatment.

The electroflotation of suspended and colloidal dispersed impurities occurs in the upper part of the device in the concentration zone of electroflot sludge saturated with electrolysis gases coming from the bottom up, and the purified water flows evenly from top to bottom through the receiving chamber 2 with a bottom made of perforated and / or mesh material located in the upper part case 1, electrodes 3 located horizontally or obliquely in the lower part of the electroflotator, the inlet of the purified water 4, the outlet of the water 5, air vent 6, nozzles input 10 and output 8 of regeneration solutions, sludge outlet pipe 9.

Thus, the alleged invention solves the issues of preventing pollution of the ion exchange load and the column itself with suspended, colloidal dispersed substances and biodegradations, increasing the efficiency of water treatment, increasing the productivity of the column, as well as the creation and industrial introduction of a high-performance KEFS-1 column for the treatment of natural and waste water and industrial solutions.

Claims (1)

Electroflotosorption column containing a vertical sorption column having a housing filled with a sorbent or filter material, with water inlet and outlet nozzles, characterized in that it is additionally equipped with a vertical electroflotation system installed with the ability to move the source water flow from top to bottom, placed either directly in the housing sorption columns above the perforated and / or mesh septum separating the sorption and electroflotation parts, or in a separate housing above the while the column connected to it by a transitional device, the electroflotation system has a receiving water source chamber with a perforated and / or mesh bottom and horizontal or inclined electrodes, and a sludge outlet pipe is located in the upper part of the column.

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