SU1130533A1 - Method for purifying and decontaminating water - Google Patents

Abstract

1. METHOD FOR CLEANING AND DISINFECTING WATER, including its treatment with ozone-containing gas while simultaneously imposing an electric field. different. so that, in order to increase the degree of cleaning and disinfection, the treatment is carried out in a non-uniform electric field with an average strength of 15-20 V / cm with a ratio of the value of the maximum intensity to a minimum of 4-6 and with the flow of the treated water in the direction perpendicular to the direction of the non-uniform electric field in the direction of decreasing its intensity. 2. A method according to claim I, characterized in that the treatment is carried out at a volume ratio of liquid § and a gas phase of 15–20: 1 k at an ozone concentration of 0 mg / l. cl

Description

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: o: o The invention relates to the purification of drinking and waste waters, in particular to the removal of mineral and organic pollutants from the treated water. A known method of purification and disinfection of water, consisting in the preliminary mixing of the treated water with the ozone-air mixture in the ratio of 8: 1 to 10: 1 with an ozone content of 10-50 mg per liter of air, followed by exposure to an electric field and electrical discharge I. The disadvantage of this method is a decrease in the efficiency of purification and disinfection of water due to a change in the ratio of water and ozone-air mixture and the concentration of ozone in water between the saturation process and the processed water by the gas mixture and the electro-treatment process. In connection with this, the time of application of the method under optimal conditions is reduced and increases with the amount of ozone fed into the water, which is the main component of the gas mixture. The closest to the invention in technical essence and the achieved result is a method of cleaning a liquid from oxidizable organic impurities, which consists in treating it with an ozone-containing gas in an apparatus with horizontal grid electrodes with a periodic change in the sign of the potential of the electrodes. The method makes it possible to regulate to a certain extent the oxidation of impurities by certain components 2j. The disadvantage of this method is the relatively low degree of purification and disinfection of treated water. The aim of the invention is to increase the degree of purification and disinfection of treated water. The goal is achieved by the fact that according to the method of cleaning and disinfecting water, including treating it with an ozone-containing gas while applying an electric floor, the treatment is carried out in a non-uniform electric field with an average intensity of 15-20 V / cm with a ratio of maximum stress to the minimum 4-6 and. when the treated water moves in the direction perpendicular to the direction of the non-uniform electric field in the direction of decreasing its intensity. Moreover, the treatment is carried out at a volume ratio of liquid and gas phases of 15-20: 1 and at an azone concentration of 0.55.0 mg / l. The use of a non-uniform electric field allows to intensify the process through the following processes. Under the action of the electric field effects, the oxidizing ability of the bubbles of the ozone-gas mixture at the gas-phase interface increases and local electric fields of high voltage appear. Under the action of dipole-dipole interaction forces, there is an enlargement of contamination particles, in particular bacterial ones. Under the action of the force of electrophoresis, a joint concentration of soil particles and pimples of the ozone-gas mixture, having an electric charge, occurs in an electric field. Under the action of a dipolophoresis force, the movement of the bubbles of the gas mixture is inhibited. The strength of dipolophoresis occurs in an inhomogeneous electric field and is directed to the region of its greatest intensity. When the field strength decreases below 15 V / cm, the electrical treatment conditions worsen, in particular, the magnitude of the electrophoresis strength decreases. on the process of ozonization of water. Optimum Parameters for Non-Homogeneity of the FIELD 4-6. An increase in the ratio of more than 6 leads to unreasonable costs of electricity, and a decrease of less than 4 to a deterioration in the conditions of electrical treatment due to a decrease in the power effect of the floor. The results of the experiments on the well-known and proposed methods are given in table. 1-4, Ozonation and electrotreatment parameters are assumed to be equal. Data analysis table. 1 and 2 shows that there is an increase in the efficiency of water disinfection when applying the proposed method. The maximum increase in the efficiency of the number of microbes in 1 ml of water is 40%, according to. if the index is 33%.

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Data analysis table. 3 and 4 shows water turbidity of 22%, color

It is noted that the application of the proposed 26% of the method provides an increase in

the effectiveness of water purification on the basis of

Nym indicators of its quality. At the same time, it is possible to significantly reduce the degree of purification and maximizing the efficiency and disinfection of water.

Table

Table

The average intensity of the electric field, V / cm

Table

Table 4

Claims (2)

1. METHOD FOR CLEANING AND DISINFECTING BODO, including treating it with ozone-containing gas while applying an electric field, different. the fact that, in order to increase the degree of cleaning and disinfection, the treatment is carried out in a non-uniform electric field with an average intensity of 15-20 V / cm with a ratio of the maximum tension to a minimum of 4-6 and when the flow of treated water in a direction perpendicular to the direction of the inhomogeneous electric field in the direction of decreasing its tension. 2. The method of pop. 1, characterized in that the treatment is carried out at a volume ratio of liquid and gas phases of 15-20: 1 and at an ozone concentration of 0.5-5-, 0 mg / L.