SU477945A1 - The way to clean water - Google Patents

Description

I

The invention relates to water with an electrical current I,

In the known method, the removal of impurities is carried out by an electrodialysis process. With a potential gradient of 25 O / cm, the degree of purification (the ratio of the ion concentration s of the initial solution to the concentration in the cleaning) from ionic impurities is

) i

for so -200, for CE-38, for heavy

metals - 25.

The purpose of the invention is to improve the degree of purification,

In the present invention, the purified wave is subjected to electroosmotic transfer sequentially through positively and negatively charged membranes.

The drawing shows the installation diagram

The installation consists of a two-chamber. cells 1 with a positively charged membrane 2 based on chromatography aluminum oxide and cells 3 with a negatively charged membrane 4 based on fluoroplast-4B made from: polytro. ". fluoroethylene Membranes impregnated obeso

lonely water. The cells are equipped with two platinum electrodes 5 and agitators 6,

Into the anode space of $ 1 hcheyk and the cathode space of cell 3 are poured

The demineralized water, prior to contact, respectively, with the anode and cathode, supplies a voltage of several hundred volts to the electrodes of both cells. Desaltable solution is fed to the cathode

the space of the chow 1 with the help of an inlet pipe 7 and the duct is installed at a constant speed, the Electroosmoticoshoke transferred water, purified from cation exchangers, from the cathode space

1 into the anode by means of the outlet tube 8 and the inlet tube 7, are pushed into the anode part of the cell. 3. The duct speed in the anode space of cell 3 is adjusted by changing the difference of pontsial supplied to electrolytes. The brine from the cathode space of cell 1 and anode cell 3 is withdrawn using co-syringe tubes 8 in coopintKe for brine. Desalted water from the cathode prostrak. -H

The cells of the cell 3 by means of a discharge pipe: l 9 enters the collection for demineralized water.

MS ..; ultata given in the table.

Outcome

concentration degree

potassium chloride, desalination /, ,,,,. ,, „nia, ..

830

0.9 3750 OD 0.02 3750

The sequence of the electro-osmotic method of deep desalination of water, first from cationic, and then; from anionic forms such as because of water containing iron impurities, which can poison (reduce the absolute value of the potential) the pore volume of the polytetrafluoroethylene membrane as a result of the precipitation of hydrolyzed forms. .

PRI m and p. as the initial purification of 1 hm. water, use distilled water having specific electrical conductivity

X 8D-10 ® pH 5.8. The process is carried out at a voltage across the electrodes of the first cell of 250 volts, the second is 6OO volts. The volumetric flow rate of water in the first cell of the composition; It is 19 l / h at the second, in the second - 15 l / h, and

volumetric rate t ed; -troosmotic transfer of water in the primordium. vsi-iixe -15 l / hour22

dm, in the second - 1o l / hour DM. After

1 O-15 min after putting the system on the ta: k6 mode, the water parameters reach the fast; these values and are stored, at least, within 24 hours of the JHOBKU operation.

The resulting water has a specific electr; conductive; be,, pk its contact with the environment ".7 -1 -1

yushey atmosphere} 4-8,6 ohm, cm, and when isolated from the surrounding atmosphere

-7-1-1 argon - om. see v.first

the case of pH 5.95, in the second pH 6.5.

The Invention

A method of purifying water by applying an electric current, characterized in that, in order to increase the degree of purification, the water to be purified is subjected to electroosmotic transfer successively through positively and negatively charged membranes.

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