RU1829964C - Method to purify water of suspended and dissolved impurities - Google Patents

Abstract

FIELD OF THE INVENTION This invention relates to potable and industrial water supply for the treatment of natural, reusable, and wastewater. The goal is to increase the degree of purification, achieve continuity and speed up the cleaning process. The method of purifying water from suspended and dissolved impurities contained in it consists in adding a bulk charge (C3) to the treated water with electric shock. SZ before feeding into the treated water is precharged with positive electrostatic potential in the electrification chamber. Then it is fed into the turbulently rotating tangentially flowing stream of treated water entering the hydrocyclone. Coagulation and filtration are carried out in a suspended and rotating coagulant layer C3 to the central axis of the hydrocyclone. C3 particles, together with mechanical impurities and cations of dissolved substances, are removed from the hydrocyclone by a lock gate. The contaminated artificial coagulant is then washed, dried and sent back to the electrification chamber. 1 ill.

Description

The invention relates to methods of water purification using electrocoagulation and filtration in a suspended and rotating layer and can be used in the field of drinking water and industrial water supply in the treatment of natural, reused and waste water.

The aim of the invention is to increase the degree of purification, continuity and acceleration of the process.

The drawing shows an apparatus for producing purified water according to the invention.

The installation includes a hydrocyclone 1, "with which water is supplied tangentially through line 2 for cleaning from a sump. In the upper part of the hydrocyclone 1, a pipe 3 for removing purified water and a screw feeder 4 with a drive 5 are installed, supplying artificial coagulant (coarse-grained river sand or glass grains charged with static potential) from the electrification chamber 6 to the inlet of the purified water. The electrification chamber 6 has at its outlet a screw auger 7 for destroying the arch, which may be formed by coagulation caking. A frame-type mixer 8 is installed on the electrification chamber 6, the frame of which is an electrode that transmits electrostatic potential during rotation of the coagulant. The electrification chamber is made of dielectric material, the outer skin

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electrically connected to a metal pipe 2. In addition, a cyclone hopper 9 with an air filter is mounted on the electrification chamber 6 to receive dry coagulant by pneumatic transport. The agitator 8 receives positive electric potential from the power source 10 (DC electric generator or converter), the negative potential of which is also connected to the pipe 2.

The lower part of the hydrocyclone. 1 has a lock gate 11, which ensures uniformity of power supply to the screw conveyor 12, leaving the hydrocyclone 1 together with the sludge coagulation, when transferring it to the washing chamber for washing 13. The sludge from the washing chamber 13 goes to the sewer, and the coagulum moves to the chamber drying 14. From the drying chamber 14, the coagulant nt enters the storage hopper 15 and is supplied with compressed air via a pneumatic conveyor line 17 to the hopper of the electrification chamber 6. The excess air enters the atmosphere through the air filter. Future artificial coagulant can be delivered to storage hopper 15 from a backup hopper 18, which is designed to make up for losses or completely replace coagulant.

A method for purifying water from suspended and dissolved impurities is carried out as follows.

Water with suspended and dissolved impurities is supplied to the hydrocyclone 1 through the pipeline 2c of the lifting station with a negative potential. At the point of tangential introduction into the hydrocyclone 1, artificial coagulant is fed. Mixed with water and rotating along the walls of hydrocyclone 1, the coagulant, being in a suspended state, captures negatively charged mechanical particles together with cations of dissolved substances when filtering them together. Those. coagulation occurs, the particles are enlarged to the size of potential neutralization, which allows their size to be regulated. Under the influence of inertial and gravitational forces along the conical part of the hydrocyclone bin 1, the coagulant, compacted, moves down. Since this creates a vacuum in the central part of the hydrocyclone 1 bin, the clarified water moves there, which leaves the hydrocyclone 1 through the pipe 3. The coagulant that is continuously compacted together with the sludge is removed from the lower conical part of the hydrocyclone 1 by a lock valve 1.1, which serves to uniformly downloads

screw conveyor 12 of the washing chamber 13, where the coagulant is discharged from the sludge, which is discharged into the sewer or silt sump. The washed artificial coagulant nt from the chamber 13 enters the drying chamber 14, from where it is transferred to the storage hopper 15. Then it is supplied with compressed air through the conveyor belt 17 using the screw feeder 16

into the electrification chamber 6. In this case, the cleaning and drying of the coagulant is carried out using known devices and methods. In the electrification chamber, the coagulum NT is mixed with a frame stirrer 8,

the mixing device which, during mixing during friction, transfers the coagulant positive electrostatic potential coming from the power source 10. The charged coagulant by the screw-inducer 7 is constantly shifted along the inclined wall of the hopper to the screw feeder 4, which feeds the coagulant to the tangential input of the cleaned water in a hydrocyclone 1. Clarified water

enters the disinfection or bacterial treatment system, for example, by ozonation. In order to eliminate capacitive currents, all external metal parts of the chamber 6 are grounded.

Using the proposed method allows to obtain the following advantages: the clogging of water by chemical elements and clogging in the subsequent gradual deposits are excluded

water supply system due to the lack of chemical coagulant; eliminates electrolysis and the transition of metal electrode ions into water due to the absence of electrodes when exposed to mechanical impurities

electrical potential; due to the use of artificial coagulant charged with electrostatic potential, neutralization occurs in the aquatic environment and the hydrocyclone is not under electric voltage; subsequent filtration of clarified water is avoided by washing the artificial coagulant from the sludge; the ability to control the coagulation rate by changing the electric potential of the artificial coagulant.

Claims (1)

SUMMARY OF THE INVENTION Purification Method; water from suspended and dissolved impurities, namely, that water is passed through a bulk charge, under the influence of an electric current, characterized in that. that, in order to increase the degree of purification, continuity and acceleration of the process, the electric current is influenced by the granular charge by preliminary charging with its positive electrostatic potential, it is fed into a turbulently rotating stream of treated water, then removed from the treatment zone along with the mechanical filtered impurities and cations of the dissolved substances, washed, dried and sent back to the electric charge. Water Air Compressed air