Water disinfectant

FIELD: chemistry.

SUBSTANCE: invention relates to means of purifying and disinfecting different types of water. Described is a disinfectant which contains a first polyhexamethylene guanidine hydrochloride component, a second alkyldimethylbenzylammonium chloride component and water, wherein content of the components in the solution is selected in the following amounts, wt %: first component 7-34.5, second component 1.75-6.9, water - the balance.

EFFECT: disinfection of drinking water.

3 tbl

 

The invention relates to sanitation and hygiene, and in particular to means for cleaning and decontamination of various types of water - drinking water, urban and industrial waste water, swimming pool water and water cooling systems equipment and hot water outdoor heating systems. Disinfectant, then the tool also applies to microbiological and chemical safety, under chemical safety refers to the observance of the established norms of maximum permissible concentrations (MPC) of chemical substances included in the composition of these products. The tool can be used to protect pipelines and structures from pathogenic bacteria and biological fouling. When this is achieved the necessary technological effect and at the same time there has been improvement in water quality.

Currently there are a large number of physical and physico-chemical methods of water disinfection. To physico-chemical methods of disinfection is the treatment of water disinfectant chemicals - chlorine or its derivatives, as well as ozone.

Widespread chlorination using liquid chlorine, calcium hypochlorite and sodium hypochlorite. However, chlorine, being a toxic substance that requires special precautions during transportation, storage and dosage. the moreover, the chloride ions present in the water, under the action of electrolytic processes are transformed into elemental chlorine which combines with organic substances that form in the water toxic compounds that are carcinogenic action. In the practice of disinfection are synthetic antibacterial polyelectrolytes based on guanidino compounds, in particular on the basis of guanidine (phmg).

Known composition for disinfecting water, comprising guanidine phosphate, methylene blue and the water, and it additionally contains alkyldimethylbenzylammonium chloride, isopropyl alcohol, in the following ratio, wt.%: alkyldimethylbenzylammonium 6-10; methylene blue 0,05-0,5; isopropyl alcohol 0.5 to 1.5; polyhexamethyleneguanidine 0,5-2,0; water - the rest. The composition provides for the destruction of pathogenic bacteria, algae, when it does not lather, and accelerates the process of water purification EN 2192393 C1, 10.11.2002.

Known means for purification of water containing an aqueous solution of polyhexamethyleneguanidine, alkyldimethylbenzylammonium chloride, the ratio of the components in the composition is in wt.%: polyhexamethylene guanidine hydrochloride 37,9-46,4; alkyldimethylbenzylammonium chloride of 7.0 and 8.6; water - the rest of the OE. The specified composition is injected into the water in two stages: at first - after entering the coagulant before chapeaurouge, and the other after separation of the flakes from the water by sedimentation. The invention provides water that meets modern requirements, EN 2442753 C1, 20.02.2012.

Also known disinfectants (EN 2034789 C1, 10.10.1995. EN 2163489 C1, 27.02.2001. WO 97/34834 A1, 25.09.1997. EP 0584914 A1, 02.03.1994. EN 2145307 C1, 10.02.2000. EN 2057796 C1, 10.04.1996. EN 2147032 C1, 27.03.2000.

The closest technical solution to the presented in this technical solution is known disinfectant containing cleansing agent and water as an antimicrobial agent, comprising the first component polyhexamethyleneguanidine or polyhexamethyleneguanidine and the second component is alkyldimethylbenzylammonium or a mixture of Quaternary ammonium salts, amine and/or tertiary amine, and the mass ratio m of the first and second components is in the range of 5:1<m≤10:1. The tool contains these components in the following amounts, wt.%: polyhexamethyleneguanidine or polyhexamethyleneguanidine - 1,5-6,0; alkyldimethylbenzylammonium or a mixture of Quaternary ammonium salts, amine and/or tertiary amine - 0,15-1,2; water - other (RU 282889 C1, 27.05.2002).

Disinfection means the patent RU 2182889 C1 based on bactericidal activity guanidino groups. The mechanism of bactericidal action pgmg includes stage, during which occurs the absorption of the polycation on the cell surface, reducing the intensity of the electron transport and the efficiency of the phosphorylation and structural abnormalities of the reaction centers of photosystem. As a consequence of these stages is increased permeability of the outer cell membranes of bacteria, significant swelling and cell death.

The remedy for the patent RU 2182889 C1 is obtained by pre-dissolving in water estimated number of pgmg-chloride or pgmg-phosphate, then add the calculated amount of the second component, such as catamine AB. In a preferred embodiment of the invention the resulting tool is a transparent liquid, which comprises polyhexamethyleneguanidine with mass fraction 2,25-2,75% and alkyldimethylbenzylammonium with a mass fraction of 0.3-0.5%. Specified, the first composition comprises the components in the amount of 2.3% and 0.3%, respectively, and the second composition contains these components in the amount of 2.7% and 0.5%. If laboratory testing was evaluated disinfectant efficiency funds in comparison with chlorine and hypochlorite intothree is, which are currently the most common disinfectants.

Preliminary testing tools for patent RU 2182889 C1 showed a steady and qualitative effect of disinfection of natural water for drinking water. Comparative testing and evaluation of the influence of money on technological, organoleptic and physico-chemical characteristics of drinking water showed the possibility of its effective and widespread use in water treatment processes.

However, the experience of using this tool in real conditions of water purification systems in the utilities during the year showed that the disinfection of water in prescribed concentrations does not provide guaranteed microbiological safety of processed water. When the dose is increased funds unacceptably increased the rate of maximum permissible concentrations of chemicals of the MT 2.1.5.1315-03. In this regard, the ratio of 5:1<m≤10:1 suggests a large gap between the first and second component that, in General, is ineffective in real terms for the disinfection of natural water, while increasing the dose of reagent leads to the exposure limit is exceeded, it should be noted that in GN 2.1.5.1315-03 there is no standard MAC for polyhexamethyleneguanidine, which makes it impossible for regulated use in water systems of iodoacetate. In this regard, the remedy for the patent RU 2182889 C1 has unsatisfactory properties and efficacy in disinfecting potable water.

The technical result presented in this description of the invention is to increase the efficiency of water disinfection.

The technical result is achieved in that the disinfectant for disinfection of water contains water and cleansing agent, and the latter includes the first component polyhexamethyleneguanidine, the second component alkyldimethylbenzylammonium (alkylbenzyldimethylammonium) or its mixture with an oxide of alkyldiphenylamine, the mass of the first component is selected to the weight of the second component in the ratio of 4:1<m≤5:1, where m is the mass ratio of the first and second components. The second component mass alkyldimethylbenzylammonium (alkylbenzyldimethylammonium) to the mass of oxide alkyldiphenylamine selected in a ratio of from 1:1 to 10:1. The tool contains these components in the following quantities, mass %: the first component within 7-50; the second component is in the range of 1.75-12,5; water - the rest.

According to the act pilot tests in surface water source was characterized by the following parameters: pH from 7.7 to 7,73; color (deg) - from 81 to 90; turbidity (mg/is m 3) - from 1.57 to 2.75; aluminum residual (mg/DM3) is from 0.04 to 0.05; oxidation (mg/DM3) - from 11.9 to 14.9; OKB (CFU/100 ml) - from 15 to 160; TKB (CFU/100 ml) - from 13 to 122; coliphages (PFU/100 ml) from 0 to 1; the spores of sulphite-reducing clostridia (CFU/20 ml) from 0 to 10.

From the presented data shows that the river water meets the requirements of SanPiN 2.1.5.980-00 requirements for water bodies in the areas of drinking and household water use.

During testing, water of the river was sequentially injected coagulant is aluminum sulfate (Al2(SO4)3) in doses of 11 mg/l to 13.5 mg/l (Al2O3and after 1.5-2 min - 7% solution of the disinfectant in doses of 0,153 mg/l to 0.38 mg/l for pgmg. Then, after contact clarifier before clear-water reservoir due was additionally administered a solution of the disinfectant dose of 0.1 mg/l (pgmg). According to the test Protocol of the Territorial Department of the Federal service for supervision of consumer rights protection and human welfare, the output of the contact clarifiers treated with coagulant and disinfected with a disinfectant water was characterized by the fact that after contact illuminators water meets the requirements of SanPiN 2.1.4.1074-01 on all indicators, with the exception of the design Bureau and TKB. Concentration means pgmg was below the exposure limits. After W is the hexadecimal format of the disinfection of the water in the clear-water reservoir due to fully comply with the requirements of SanPiN 2.1.4.1074-01. While in purified water residual quantity of the disinfectant did not exceed the MAC for the main current substance (pgmg) and was not more than 0.1 mg/L. the concentration of these components was chosen in the range, wt.%: component - 7-34,5, the second component is 1.75-6.9, water - the rest.

From table 1 it is evident that after contact illuminators water meets the requirements of SanPiN 2.1.4.1074-01 on all indicators, with the exception of the design Bureau and TKB. Concentration means pgmg was below the exposure limits.

Table 2 shows that after secondary disinfection of water, she's in the clear-water reservoir due to fully comply with the requirements of SanPiN 2.1.4.1074-01. Thus, as the test showed, the quality of water disinfection and, accordingly, as a means of disinfection significantly improved.

Improving the quality of a disinfectant allowed to extend its functionality.

From table 3 it can be seen that when the residual content of polyhexamethyleneguanidine from 0.07 to 0.1 mg/l, and alkyldimethylbenzylammonium from 0,014 0,02 water is provided by the high microbiological safety of drinking water during transport it to the consumer in the distribution of the urban network. Disinfectant concentrations, not reviewsi MAC has reliable prolonging effect, while preserving the quality of water at any point in the network in accordance with the norms SanPiN 2.1.4.1074-01.

Disinfectant for disinfection of water containing the first component polyhexamethyleneguanidine, the second component alkyldimethylbenzylammonium and water, forming a solution, characterized in that the content of components in the solution is selected in the range, wt.%: the first component, 7-34,5, the second component is 1.75-6.9, water - the rest.



 

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