IT202100030734A1 - AQUEOUS SOLUTION FOR WATER TREATMENT. - Google Patents

Description

AQUEOUS SOLUTION FOR WATER TREATMENT

DESCRIPTION

The present invention relates to an aqueous solution for the treatment of water, in particular for use in the agricultural, industrial fields or for disinfection treatments.

To date, so-called plant protection products are known and widely used in agriculture.

These are products, generally ready for use, after dilution in water (with exceptions), which can be used to protect and preserve plants (and plant products) or influence their vital processes (growth, etc.).

Plant protection products are used to try to protect plants and fruits from all harmful organisms, including preventing their effects. Furthermore, plant protection products can be used to destroy unwanted plants, or to control or prevent their growth.

Among the most commonly used plant protection products? used are pesticides and fungicides: the former are mainly insecticides (against plant and animal parasites) while the latter are essentially fungicides.

Plant protection products belong to the pesticide group together with many biocides. Plant protection products are used in agriculture on crops, but also on harvested products; furthermore, in the forestry and non-agricultural fields they are used on plants or in the plant world in general.

? It is well known that the use of plant protection products, despite their placing on the market and their use being regulated by specific supra-state, national and local regulations, is often dangerous with reference to possible pollution, contamination or accumulations in relation to humans, flora , to the fauna and, more? in general, to the environment.

The disinfection of water, for example for its purification, is usually carried out through the so-called chlorination process. This process can? be accomplished in various ways; in commonly understood chlorination (that of small/medium sized systems) a solution of sodium hypochlorite (bleach, bleach) is simply added to the water to be made drinkable.

Adding chlorine to water produces hydrochloric and hypochlorous acids - these compounds are known as free chlorine.

Whether the chlorine is introduced directly into the water supply or into a tank, a "contact time" between water and chlorine of at least 30 minutes should be ensured before use, so that chlorine can carry out its bactericidal action, oxidizing any living form existing in the water.

In reality, since? sodium hypochlorite solutions spontaneously lose (with time, light, temperature, the action of other substances present in the water) their active chlorine content, to ensure the required measurement "at the tap" (for example 0, 2 mg/l), progressively higher dosages are applied in aqueducts (for example 0.4 mg/l).

Chlorine-based treatments are among the most effective and widespread in the common practice of disinfection and purification of water.

In fact, chlorine, in the various forms in which it is used (sodium hypochlorite, chlorine dioxide, etc.), ? a broad-spectrum disinfectant: it destroys a large part of the bacterial microorganisms harmful to humans, including the Legionella pneumophila bacterium, but also spores and viruses; It also has excellent persistence, meaning its effect is maintained over time.

However, the introduction of chlorine into an aqueous solution leaves various traces and by-products such as, for example, trihalomethanes. Disinfection by-products are chlorine-based compounds that are very persistent and capable of reaching the final point of the distribution network.

If on the one hand the use of chlorine to guarantee drinkability? along the entire distribution network of an aqueduct can? seem indispensable, the presence of chlorine in the water supply causes two main problems that tap water consumers often complain about:

? it alters the smell and taste of the water, making it of high quality. lower than how it flows from a spring or well;

? the limits imposed by law determine the safety conditions within which the chlorine concentration is not harmful to the human body, but this does not mean that chlorine is not present in water.

The task of the present invention? is to create an aqueous solution for the treatment of water that is capable of improving the known art in one or more? of the aspects indicated above.

Within this task, one purpose of the invention is? is to make available an aqueous solution for the treatment of water, which can be used, in agriculture, as a product to increase the pH and to lower the alkalinity, and at the same time to allow us to eliminate, or at least drastically reduce, the use of pesticides.

Another purpose of the invention? that of devising an aqueous solution for the treatment of water, which allows disinfection to be carried out in the integrated water system, both with reference to the purification processes and with regard to the disinfection of purification wastewater and their refining for irrigation purposes in agriculture.

Not the least purpose of the invention? is to create an aqueous solution for water treatment that is highly reliable, relatively easy to create and at competitive costs.

This task, as well as? these and other purposes which will become clearer below are achieved by an aqueous solution for the treatment of water according to claim 1, optionally equipped with one or more of the characteristics of the dependent claims.

Further characteristics and advantages of the invention will become clearer from the description of some preferred, but not exclusive, embodiments of the aqueous solution according to the invention.

The aqueous solution for the treatment of water according to the invention comprises a liquid solution comprising water and silver ions in citric acid.

The concentration of silver ions in the liquid solution? between 0.0032 and 0.9 PPM (parts per million).

Specifically, the silver ions in citric acid are made up of a stabilized complex in which each silver ion is weakly bound to citric acid ions.

The concentration of citric acid in the liquid solution? between 100 and 1000 PPM (parts per million), and more? preferably between 400 and 600 PPM (parts per million).

Preferably, the concentration of silver ions in the liquid solution is ? between 0.0032 and 0.032 PPM (parts per million).

In particular, silver ions are generated electrolytically.

Transport proteins, traced back to over 500 families, cross the cell membrane and transport different molecules, generally belonging to two categories: nutrients and endogenous substances necessary for cellular functioning.

From a structural point of view, these transporters are made up of 12 helices that proceed back and forth across the thickness of the membrane to form a channel through which substances are transported into the cell. In the case of bacteria, transport proteins recognize citric acid as a food and then transfer it into the microorganism. Once penetrated inside, the silver cations react rapidly with the negatively charged groups, causing irreversible damage to both the proteins and the DNA and RNA of the bacteria, blocking their metabolic and reproductive functions, ultimately determining their death.

Practically:

? silver cations inhibit the multiplication of bacteria, irreversibly damaging their DNA and RNA, with the production of insoluble silver halides;

? at the level of tissue proteins, silver ions bind to them, causing structural changes to the cell and intracellular walls, as well as in the nuclear membranes of the bacteria themselves;

? The silver ions in citric acid also bind the electrons of sulphur, oxygen and nitrogen of the bacteria resulting in precipitation and coagulation of some proteins of the microorganisms.

The aqueous solution according to the invention comprises, in addition to the liquid solution comprising silver ions in citric acid, further, ethyl alcohol in a percentage comprised between 6% and 12% of the liquid solution.

Yes ? found that this aqueous solution can be used in the agricultural field for various purposes.

In particular, this aqueous solution can be used to increase pH and lower alkalinity.

In addition or alternatively, this aqueous solution can? be used as a replacement for pesticide products.

Yes ? in this regard, it has been found that the presence of silver ions in the liquid solution according to the invention allows for disinfection effectiveness comparable to that of solutions which include a percentage of ethyl alcohol equal to 70%.

Preferably, the aqueous solution according to the invention further comprises a compound selected from the group comprising:

? aluminum fosethyl;

? copper oxychloride and/or copper hydroxide;

? sulfur and/or organic sulfur;

? bupyramide;

? azoxystrobin and difenconazole;

? sweet orange essential oil and/or organic sweet orange essential oil;

? trichoderma asperellum and/or tricodema gamscii.

In particular, yes? found that the addition of aluminum fosetyl allows to combat downy mildew on vines and melons, scab on apple trees and phytoflora on pome fruit.

Yes ? noted that the addition of copper oxychloride and/or copper hydroxide makes it possible to combat tomato bacteriosis, downy mildew of cucurbits, anthracnose, downy mildew, excoriosis, black rot and parasitic redness of the vine, the corineo and the stone fruit moniglia.

Yes ? noted that the addition of sulfur and/or organic sulfur makes it possible to combat powdery mildew on vines, pome fruits and stone fruits.

Yes ? found that the addition of bupyramide makes it possible to combat powdery mildew on courgettes, melons, tomatoes and cucumbers.

Yes ? noted that the addition of azoxistrobin and difenconazole makes it possible to combat powdery mildew of many horticultural crops, downy mildew and root diseases such as Fusarium, Phytium, Sclerotinie, melon dimella.

Yes ? found that the addition of sweet orange essential oil and/or organic sweet orange essential oil? effective for the vine against excoriosis, powdery mildew, downy mildew, thrips, and leafhoppers; for the cucumber against powdery mildew, thrips and whitefly, for the melon against powdery mildew.

Yes ? noted that the addition of trichoderma asperellum and/or tricodema gamscii? effective against esca disease and brown spot of the vine, against root diseases of horticulture, and Armillaria of fruit trees.

In fact, the presence of the silver ions in citric acid in the aqueous solution according to the invention allows the effectiveness of the additional components added to be exponentially increased, even if added in extremely limited percentages.

The present invention also concerns the use of an aqueous solution in the agricultural sector.

The purpose of the aqueous solution according to the invention? that of increasing the pH, lowering the alkalinity, and carrying out or assisting the antiparasitic action.

In particular, the concentration of silver ions in the liquid solution is ? between 0.0032 and 0.32 PPM (parts per million) and has a stabilized complex in which each silver ion is weakly bound to citric acid ions.

In particular, silver ions are generated electrolytically.

Advantageously, the aqueous solution according to the invention comprises, in addition to the liquid solution comprising silver ions in citric acid, ethyl alcohol in a percentage of between 6% and 12% of the liquid solution.

Preferably, the aqueous solution according to the invention further comprises a compound selected from the group comprising:

? aluminum fosethyl;

? copper oxychloride and/or copper hydroxide;

? sulfur and/or organic sulfur;

? bupyramide;

? azoxystrobin and difenconazole;

? sweet orange essential oil and/or organic sweet orange essential oil;

? trichoderma asperellum and/or tricodema gamscii.

According to a further aspect, the present invention concerns the use of an aqueous solution for the disinfection of water.

Specifically, for the purification of water or for the treatment of wastewater.

In particular, the aqueous solution for water treatment according to the invention comprises a liquid solution comprising silver ions in citric acid and has a stabilized complex in which each silver ion is weakly bound to citric acid ions.

In particular, the concentration of silver ions in the liquid solution is ? between 0.0032 and 0.9 PPM (parts per million).

The concentration of citric acid in the liquid solution? between 100 and 1000 PPM (parts per million), and more? preferably between 400 and 600 PPM (parts per million).

Preferably, the concentration of silver ions in the liquid solution is ? between 0.0032 and 0.032 PPM (parts per million).

In particular, silver ions are generated electrolytically.

Yes ? found that the aqueous solution according to the invention guarantees complete sanitization of the water without the addition of chemical additives, eliminating, among other things, Legionella and mold, and also sanitizing encrustations.

It should be noted that, with reference to the collection and treatment of waste water, the aqueous solution according to the invention is also effective on protozoa, including Giarda and Cryptosporidium, allowing simplifications and qualification in the sanitization process.

Disinfection using the aqueous solution according to the invention guarantees constant control of the microbial load over time with an ever decreasing presence of bacteria, viruses, fungi and mold in the ducts and pipes since does not create microbial resistance.

The aqueous solution according to the invention has a residual effectiveness of a minimum of 18 and a maximum of 24 hours.

Specifically, with one liter of concentrated aqueous solution you can sanitize approximately 20,000 liters of drinking water.

In the diluted ready-to-use product there are 35 PPM of silver ions and approximately 400/600 PPM of Citric Acid.

The mechanism of action of the molecule (which is seen by the Bacteria as a Metabolic Source without generating microbial resistance) guarantees a disinfectant efficacy equivalent to approximately 2000 ppm of Chlorine, this is due to the long-standing certainties on the creation of microbial resistance by all chemical products which nullify the variations in the greater concentrations of the products themselves over time.

Using the aqueous solution according to the invention, the contact times necessary to reduce the microbial load are ? equal to about 30 seconds for viruses, and about 2 minutes for bacteria.

In order to highlight the prudential dilution values, with a 1:35 dilution? already respected the WHO parameter? at the time of spilling the product as it is ready for use, this without considering the inevitable effects relating to the exhaustion of the molecule during the water purification process.

Furthermore, please note that the optimal dilution for disinfectant effectiveness foreseen for drinking water is ? of approximately 1:100 litres, well below the threshold values already? however respected with a dilution of approximately three times more? concentrated.

As regards microbiological problems for water intended for human consumption, the following possible areas of use have been evaluated within the Integrated Water System:

? Sanitization of the accumulation works (tanks, reservoirs) and other parts of the system with the use of the aqueous solution according to the invention for shock or programmed interventions to prevent water pollution situations; ? Validation of the product use protocol for water disinfection in aqueducts: ? in this regard, it is possible to promote a shared project between the manager and control bodies to define a protocol for the use of the aqueous solution according to the invention to allow the effectiveness of the product to be evaluated in the different phases up to the tap, to define elements of the monitoring system and specific parameters useful for monitoring compliance with quality tables? of water intended for human consumption;

? Use of the aqueous solution according to the invention for the disinfection of purification wastewater and their refining for irrigation purposes in agriculture.

The target ? sanitize the water below the parameters of E. Coli, Legionella and intestinal nematodes foreseen by the quality class? A for water refined for irrigation purposes in agriculture. Evaluate and define the protocol for using the aqueous solution according to the invention to comply with the values envisaged by class A both for maintaining levels until actual use for irrigation and for overcoming critical issues. environmental classes B C and D.

Evaluate the possibility? to redesign operating schemes of the purification plant based on the use of the product and its effectiveness on intestinal nematodes, in particular Giardia and Cryptosporidium Parvum.

Can you? else? envisage the use of the aqueous solution as a mouthwash, as a hand sanitizer or as a dental root canal irrigant.

Yes ? in practice it has been observed that the invention achieves the intended task and objects by providing an extremely effective aqueous solution for use in the agricultural sector and in water disinfection.

With particular reference to use in the agricultural sector, yes? found that the addition of the aqueous solution comprising the silver ions in citric acid according to the invention allows the effectiveness of other compounds, such as for example ethyl alcohol, even added in reduced percentages, to be exponentially increased.

Similarly, the addition of the aqueous solution of silver ions in citric acid to products already used and certified against specific diseases or against particular parasites (for example aluminum fosetyl, copper oxychloride and/or copper hydroxide, sulfur and/or organic sulphur, bupyramide, azoxistrobin and difenconazole, sweet orange essential oil and/or essential oil of organic sweet orange) allows you to significantly increase, even exponentially, the effectiveness of these products already? used and certified against specific diseases or particular parasites.

It therefore remains clear that the aqueous solution containing silver ions in citric acid, although, in these specific cases, not being "the basic active ingredient", is however, it is capable of expanding some disinfectant solutions that are now "certified" to the point of making them very effective in the various areas linked to the resolution of bacterial, viral and problems of any nature.

The found, what? conceived, ? susceptible to numerous modifications and variations, all falling within the scope of the inventive concept; furthermore, all details may be replaced by other technically equivalent elements.

In practice, the materials used, as long as? compatible with the specific use, as well as? the contingent dimensions and shapes may be any depending on the needs and the state of the art.

Where the features and techniques mentioned in any claim are followed by reference marks, have such marks been affixed for the sole purpose of increasing intelligibility? of the claims and consequently such reference marks have no limiting effect on the interpretation of each element identified by way of example by such reference marks.

Claims (10)

1. Aqueous solution for the treatment of water characterized in that it comprises a liquid solution of silver ions in citric acid. In particular, the concentration of silver ions in the liquid solution is between 0.0032 and 0.9 PPM (parts per million). 2. Aqueous solution according to claim 1, characterized in that the concentration of citric acid in the liquid solution is ? between 100 and 1000 PPM (parts per million), and more? preferably between 400 and 600 PPM (parts per million). 3. Aqueous solution according to claim 1 or 2, characterized in that it comprises a stabilized complex in which each silver ion is? weakly bound to citric acid ions, called silver ions being generated electrolytically. 4. Aqueous solution, according to one or more? of the previous claims, characterized by the fact that it further comprises ethyl alcohol in a percentage of between 6% and 12% of the liquid solution. 5. Aqueous solution, according to one or more? of the previous claims, characterized by the fact of further comprising a compound selected from the group comprising: ? aluminum fosethyl; ? copper oxychloride and/or copper hydroxide; ? sulfur and/or organic sulfur; ? bupyramide; ? azoxystrobin and difenconazole; ? sweet orange essential oil and/or organic sweet orange essential oil; ? trichoderma asperellum and/or tricodema gamscii. 6. Use of an aqueous solution characterized in that it comprises a liquid solution of silver ions in citric acid in which the concentration of the silver ions in the liquid solution is ? between 0.0032 and 0.9 PPM (parts per million), in the agricultural sector as a pesticide or to increase the pH. 7. Use of an aqueous solution characterized in that it comprises a liquid solution of silver ions in citric acid, wherein the concentration of the silver ions in the liquid solution is ? between 0.0032 and 0.9 PPM (parts per million), for water disinfection. 8. Use of an aqueous solution characterized in that it comprises a liquid solution of silver ions in citric acid, wherein the concentration of the silver ions in the liquid solution is ? between 0.0032 and 0.9 PPM (parts per million), as a mouthwash. 9. Use of an aqueous solution characterized in that it comprises a liquid solution of silver ions in citric acid, wherein the concentration of the silver ions in the liquid solution is ? between 0.0032 and 0.9 PPM (parts per million), as a hand sanitizer. 10. Use of an aqueous solution characterized in that it comprises a liquid solution of silver ions in citric acid, wherein the concentration of the silver ions in the liquid solution is ? between 0.0032 and 0.9 PPM (parts per million), as a dental root canal irrigant.