RU2472712C2 - Water decontaminator - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention may be used in local drinking water treatment systems in municipal water supply systems. Proposed device comprises two coaxial cylinders 8 making tight hollow casing 9, dirty water inlet branch pipe 1, decontaminated water discharge branch pipe 2, compressed air feed branch pipe 3, and flushing solution drain branch pipe 4. Chamber between coaxial hollow cylinders 8 houses means for UV radiation of water composed of hollow vessels 7 from quartz glass filled with mix if inert gases. Two rings 10 from porous ceramic are arranged at top and bottom of said cylinders 8. HF current generator 5 connected via electrodes 6 to coaxial cylinders 8 is located outside casing 9.

EFFECT: higher efficiency of decontamination, nonpolluting process.

1 dwg

Description

The present invention relates to water purification and disinfection systems, including their use in local drinking water treatment systems of municipal water supply systems.

Under the disinfection of drinking water is understood measures for the destruction in water (inactivation) of bacteria and viruses that cause infectious diseases. According to the method of exposure to microorganisms, water disinfection methods are divided into chemical or reagent; physical, or reagent-free, and combined. In the first case, the proper effect is achieved by adding biologically active chemical compounds to the water; non-reagent disinfection methods involve the treatment of water by physical influences, and combined use both chemical and physical effects.

The chemical methods of disinfecting drinking water include its treatment with oxidizing agents: chlorine, ozone, etc., as well as heavy metal ions. Physical - disinfection with ultraviolet rays, ultrasound, etc. Before disinfection, water is usually subjected to purification by filtration and (or) coagulation, in which suspended solids, helminth eggs and a significant part of microorganisms are removed.

Of the physical methods of disinfecting drinking water, disinfection of water with ultraviolet rays, the bactericidal properties of which are due to the effect on cell metabolism and, especially, on the enzymatic systems of the bacterial cell, is most widespread. Ultraviolet rays destroy not only vegetative, but also spore forms of bacteria, and do not alter the organoleptic properties of water. It is important to note that since no toxic products are formed during UV irradiation, there is no upper dose threshold. By increasing the dose of UV radiation, it is almost always possible to achieve the desired level of disinfection.

Ultraviolet irradiation of water is used both for industrial and domestic purposes. A brief overview of the use of this exposure is given on the site [http://ad.adriver.ru - Filters for city water supply. / Ideas for your home].

Several patents of the Russian Federation are known in which devices for disinfecting water using ultraviolet radiation are described. For example, patent RU No. 2073646, RU No. 2228299. In the known device RU No. 2073646 through the use of ultraviolet rays concentrated by a parabolic reflector on the surface of the flow of drinking water, and the use of a silver-plated plate in the stream with the creation of a current strength of 10 mA on it, water disinfection is ensured.

A known decision on the application JP No. 6269772, which, as the closest in the set of essential features, taken as a prototype. In this solution, hollow forms (ceramic balls) are used as a filter load and are not a source of UV radiation.

These known solutions for ultraviolet irradiation of water use ultraviolet lamps (for example, quartz mercury UV lamps). The disadvantage of using UV lamps is the problem of their disposal, which is quite laborious, and in some cases leads to environmental pollution. In addition, the disadvantage is that the irradiation of water is uneven along the depth of the stream, which affects the quality of disinfection and does not allow to achieve 100% effect.

The objective of the present invention is to provide a new device for disinfecting water, which would ensure the achievement of the following technical result, namely: it would increase the efficiency of the disinfection process while ensuring environmental friendliness and safety of the process.

The problem is solved as follows. In the device for disinfecting water, consisting of two coaxial cylinders, forming a sealed hollow body with inlet and outlet nozzles for supplying disinfected water and disinfecting the disinfected, and means for ultraviolet irradiation of a liquid, according to the present invention, hollow silica glass molds filled with a mixture of inert gases (gas) and placed in the space between two coaxial cylinders Enclosed within the housing, the top and bottom of these coaxial cylinders has two rings made of a porous ceramic, a high frequency current generator, disposed outside the hollow body and hermetically connected to the coaxial cylinders.

There is an option by which additional pipes are introduced for supplying and draining the washing solution from a cavity filled with hollow forms of quartz glass with inert gases.

As an example of hollow forms, hollow quartz glass balls of various diameters can be used, as well as glass tubes hermetically sealed from both ends of the tube.

Such a new technical solution with all its essential features allows you to get a device for disinfecting water, ensuring the achievement of the following technical result, namely: to increase the efficiency of the disinfection process while ensuring environmental friendliness and process safety. This is due to the fact that there is a sealed hollow body formed by coaxially arranged cylinders that perform the function of electrodes. It has an inlet and outlet nozzles, which are designed for the supply of disinfected water and the removal of disinfected. In addition, there is also a means for generating ultraviolet irradiation of a liquid, in which hollow forms made of quartz glass filled with a mixture of inert gases are used. Moreover, these hollow forms are placed in the space between two coaxial cylinders located inside the housing. Above and below these coaxial cylinders are two rings made of porous ceramic. High-frequency voltage from a high-frequency current generator is supplied to the electrodes located on the cylinder walls. The device is proposed to be supplemented with nozzles for supplying and draining the washing solution (acidic or alkaline) to eliminate plaque in case of occurrence with insufficient degree of water purification at the previous stage.

The applicant conducted a patent information search on this topic, which showed that the proposed set of essential features is not known. Therefore, the claimed invention can be considered new.

The present invention for a specialist does not logically follow from the prior art, which was sufficiently justified earlier. The practical applicability of the claimed invention is illustrated below by the following description and drawing.

Figure 1 shows a schematic diagram of the implementation of the proposed device, where

1 - inlet pipe

2 - exhaust pipe

3 - pipe for compressed air

4 - drain pipe

5 - high-frequency generator

6 - electrodes

7 - the inner space of coaxial cylinders filled with hollow forms

8 - coaxial cylinders

9 - case

10 - ceramic rings.

The operation of the device is as follows.

Under the influence of a high-frequency electromagnetic field, the electrons of atoms of inert gases (gas) inside hollow forms begin to be excited and emit ultraviolet rays with a spectrum in the wavelength range of 220-300 nm, determined by the composition of the mixture of inert gases.

During operation, water from the line enters the device through the pipe 1 and the ring 10 of porous ceramics and, passing through the filler from the glass hollow forms 7, is disinfected by ultraviolet radiation.

After that, water through the lower ceramic ring 10 and the pipe 2 enters the consumer or in the storage tank.

For regeneration (cleaning) of the surface of the hollow forms, the nozzles 1 and 2 are closed, the nozzle 4 opens and the washing solution is supplied through the nozzle 3, followed by washing with water from the main 1 when the nozzle 3 is closed.

The required number of flushing cycles can be controlled by using a photosensitive sensor.

The power of the HDTV generator should provide a radiation intensity of up to 25 mJ per square. cm and reduce the concentration of microorganisms capable of division by at least 3 orders of magnitude.

The claimed technical solution allows

- increase the working life of the disinfection device, since the working life of the used hollow molds with inert gas is more than 50,000 hours, while the best mercury UV lamps have 5000-10000;

- increase the efficiency of the disinfection process, since the proposed device provides a large surface of contact of water with UV radiation, as well as a large radiation power;

- reduce the overall dimensions of the device, achieve greater compactness and ergonomics;

- adjust the power of UV radiation depending on the quality of the water, changing the power of the high-frequency generator;

- ensure environmental friendliness and safety of the disinfection process.

Claims (2)

1. A device for disinfecting water, consisting of two coaxial cylinders, forming a sealed hollow body with inlet and outlet nozzles designed to supply disinfected water and drain disinfected, means for ultraviolet irradiation of liquid, which is a hollow form made of space between two coaxial cylinders of silica glass filled with a mixture of inert gases (gas), characterized in that two rings are placed above and below the coaxial cylinders, made nnye from porous ceramics, there is high frequency current generator, disposed outside the hollow body and hermetically connected to the coaxial cylinders. 2. The device for disinfecting a liquid according to claim 1, characterized in that it further comprises nozzles for supplying and draining the washing solution from a cavity filled with hollow forms of quartz glass with inert gases.