CZ2005474A3 - Method of securing hygienic purity of water and apparatus for making the same - Google Patents

Abstract

The method of hygienic provision of drinking and pool water consists in the use of a polymeric substance of ion exchange type with complexed triiodide ions, through which water is filtered separately or in combination with complexly bound copper or silver ions. The apparatus for carrying out the method comprises a housing (2) provided with a perforation (3) having a hole diameter smaller than that of the ion exchanger (1) enclosed therein.

Description

Method of hygienic assurance of water purity and equipment for its implementation

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a method for hygienically ensuring the purity of water, in particular pool and drinking water, and a device for carrying out the same.

BACKGROUND OF THE INVENTION

Simultaneous implementation of the method of hygienic assurance of water purity, whether drinking or swimming pool, is based on the bactericidal and algicidal action of chlorine in the form of sodium hypochlorite solution or chlorine gas. It is a technically feasible and economical way of water treatment, which uses perfect regulators. The disadvantage of using chlorine is that chlorine compounds, some of which have carcinogenic effects, are produced by side reactions of chlorine with natural substances such as humic substances and substances of anthropogenic origin - sweat, saliva, urine, skin, hair.

Another disadvantage of the high degree of chlorination required by pool water is the allergic reactions of some pool visitors to chlorine or the formation of chloramine.

Another method of sanitary security of water, even swimming pool, is based on the use of ozone. It is a relatively effective system with the disadvantage of low solubility of ozone in water. Also, the method of water ozonization as carried out in a separate tank, including the removal of unreacted ozone, is too demanding. In addition, ozone-purified water must always be chlorinated before being transported to the consumer.

At present, it is also known to use a combination of ultraviolet radiation with ozonation and chlorination of water before it is introduced into the pool to ensure hygienic water purity. However, the procedure is economically demanding.

SUMMARY OF THE INVENTION

The object of the invention is to eliminate as far as possible the shortcomings of existing methods of ensuring hygienic purity of water, but in particular to reduce the degree of chlorination of water while respecting existing hygiene regulations.

This is achieved by a method of ensuring the hygienic purity of the water, in particular the pool and drinking water according to the invention, which is essentially based on the use of an ion exchange type polymer with complex bound triiodide ions through which the water flows, which can advantageously be regenerated with potassium iodate. , acidic sodium phosphate and acidic potassium phosphate.

In order to increase the efficiency, it is advisable to use the ion exchanger with complex copper ions simultaneously. The anion exchanger is preferably a polystyrene or polyacrylate type anion exchanger. In order to maintain the long-term algicidal effect, sodium polystyriminoacetate is preferred as the ion exchanger.

A further increase in efficacy can be achieved by using a complexed silver ion exchanger. A cation exchanger of polystyrene type crosslinked with divinylbenzene or a cation exchanger of polyacrylate type can be used as the ion exchanger.

With respect to efficiency, it is preferred that, when using polymeric compounds with complex bound triiodide ions, copper and silver, these are separated from each other (i.e., placed in separate shells).

The essence of a simple device for carrying out a method of ensuring hygienic water purity is that the ion exchanger is enclosed in a casing or flow column provided with a perforation having a hole size of up to 0.3 mm in diameter.

It is preferred that the sleeve or column be connected by a side flow technology prior to entering the tank.

It is optimal if the housing is made of plastic and is located in the suction part of the automatic pool vacuum cleaner intended for cleaning the bottom and walls of the tank.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail with reference to the drawings in which: FIG. 1 shows the active substance housing;

Description of an exemplary embodiment

Hygiene assurance of water purity is based on the use of ion exchangers 1 with complex bound triiodide ions alone or in combination with ion exchangers I with complex bound copper ions and / or silver ions.

Preference is given to ion exchangers I of the polystyrene or polyactrylate type deposited in universal use in sleeves 2 having a perforation 3, which is chosen so that the filling from the sleeve 2 does not empty, i.e. holes of perforation 3 up to about 0.3 mm, which is effective at of the usual size of granules of ion exchange resin I above about 0.3 mm diameter. Hygienic protection of the water is effected by filtration through the ion exchanger I filled sleeve 2, whereby using ion exchanger with complex bound triiodide ions in combination with ion exchanger 1 with complex bound copper or silver ions these are stored in separate housings 2, serially in the duct 5, the side flow technology with shut-off valve 6 according to FIG. they are located in the pipe 5 before it flows into a pool (not shown). Bactericidal and fungicidal effects of the ion exchange resins i are exposed to water as the water flows through the housing 2. The housing 2 can also be inserted into the automatic pool vacuum cleaner and into the suction part of the device. The regeneration of the ion exchanger I with the complexly bound triiodide ions is carried out with a mixture of potassium iodate, acidic sodium phosphate and acidic potassium phosphate.

Example 1

In a 12 x 6 xl, 5m swimming pool with a water temperature of 28 ° C and an average attendance of 100 bathers, a permanent chlorination of at least 0.5 mg of free chlorine per liter of water was necessary to sanitize the pool water. in water, it found a value of 290 cfu / ml of mesophilic bacteria. By filtering through a vertical column 4 packed with 600 ml of complexed triiodide cation exchanger and 600 ml of cuprous anion exchanger, the chlorine dosage could be reduced to 0.2 mg / l. This measure reduced the number of mesophilic bacteria from 290 cfu / ml to 0.

Example 2

In a children's pool of 15 x 6 xl, 3m with a water temperature of 29 ° C and a daily attendance of 90 bathers, water was sanitized by controlled chlorination to a free chlorine value of 0.5 mg / l and side-flow technology carried out ozonation of 1, 9 g / h. Ozone was dispersed into line 5 by a venturi (not shown) after filtration. After a day of bathing, the number of colonies of mesophilic bacteria at 35 ° C was found to be greater than 300 cfu / ml.

Additional cleaning was performed using an automatic pool vacuum cleaner at the water outlet by a pair of bushings 2, one of which was filled with a cation exchanger with complex bound triiodide in an amount of about 200 g and the other was filled with 200 g of polystyrene iminoacetate sodium complex. The pool and pool cleaning mode was set to 8 hours. While maintaining the water purity parameters, the chlorine dosage could be reduced to 0.3 mg / l. The number of colonies of mesophilic bacteria decreased to 2 cfu / ml, with a permissible value of 20 cfu / ml.

Example 3

Water pumped from a well in a mountain building containing above-the-limit amounts of mesophilic bacteria that multiplied in line 5 while the building was abandoned.

Housing 2 containing 1000 ml of complexed divalent copper ion exchanger mixture, 500 ml of complexed triiodide and 100 ml of complexed silver cation, was placed in the suction basket of pipe 5. While pumping water through housing 2, mesophilic bacteria were discarded and drinking water remained hygienically safe even when its circulation was restricted or stopped.

Industrial applicability

In particular, the invention can be applied to provide sanitary conditions in drinking water pools or reservoirs.

PATENT CLAIMS

Claims (8)

PATENT CLAIMS A method of sanitary security of drinking and pool water, characterized in that an ion exchange type polymer with complexly bound triiodide ions is used, through which the water is filtered. Method according to claim 1, characterized in that the regeneration of the ion-exchanger with the complexly bound triiodide ions is carried out with a mixture of potassium iodate, acidic sodium phosphate and acidic potassium phosphate. Method according to claim 1, characterized in that a ion exchange type polymer with complexly bound copper ions is used simultaneously, Method according to claim 1 or 2, characterized in that a ion exchange type polymer with complexly bound silver ions is used simultaneously. Method according to claim 1 or 2 or 3, characterized in that the polymeric compounds with complexly bound triiodide, copper and silver ions are separated from each other. Device for carrying out the method according to any one of claims 1 to 4, characterized in that it comprises a housing (2) provided with a perforation (3) having a hole diameter less than the granularity of the ion exchange resin (1) enclosed therein. Device according to claim 5, characterized in that the casing (2) is inserted upstream of the mouth into the drinking water tank or pool by the side flow technology. Device according to claim 5, characterized in that the housing (2) is mounted in the suction part of the automatic pool vacuum cleaner.