METHOD OF PRODUCING A STABILIZED AQUEOUS CHLORINE DIOXIDE SOLUTION

Abstract

The invention relates to the chemical industry and can be used in the production of an aqueous chlorine dioxide solution for disinfection, water purification, sterilization and bleaching. To produce a stabilized aqueous chlorine dioxide solution, in the first step two aqueous solutions, (A) and (B), are prepared. To prepare the first solution (A), metallic or ammonium chloride (A1), metallic or ammonium carbonate (A2) and metallic or ammonium bicarbonate (A3) are dissolved in water. The mass ratio of (B1) to (A2+A3) is (2.4-3.0):1. To prepare the second solution (B), metallic or ammonium persulfate (B1) and metallic or ammonium bisulfate (B2) are dissolved in water. The mass ratio of (B1) to (B2) is 3:1. In the second step, solution (B) is added to solution (A). The invention provides maximum production of the end product (aqueous chlorine dioxide solution) that does not have destabilizing side products and can be stored at a temperature of up to 30° C. and at normal atmospheric pressure for at least 12 months.

Claims

1. The method of producing a stabilized aqueous chlorine dioxide solution, involving the interaction of two aqueous solutions, characterized in that one of the solutions (A) is produced by dissolving metallic or ammonium chloride (A1), metallic or ammonium carbonate (A2) and metallic or ammonium bicarbonate (A3) in water, with the mass ratio of metallic or ammonium chloride (A1) to metallic or ammonium carbonate or metallic or ammonium bicarbonate (A2+A3) being 2.4-3.0:1, whereas the second of the solutions (B) is obtained by dissolving metallic or ammonium persulfate (B1) and metallic or ammonium bisulfate (B2) in water, with the mass ratio of metallic or ammonium persulfate (B1) to metal or ammonium bisulfate (B2) being 3:1.

2. The method of producing a stabilized aqueous chlorine dioxide solution according to claim 1, identified by the mass ratio of components (mass. %) as follows: metallic or ammonium chloride—0.005-3.939 metallic or ammonium carbonate—0.001-0.855 metallic or ammonium bicarbonate—0.001-0.782 metallic or ammonium persulfate—0.006-4.641 metallic or ammonium bisulfate—0.002-1.547 water—88.236-99.985.

Description

EMBODIMENT OF INVENTION

[0053] The invention can be illustrated, but not limited to the following examples of its specific implementation.

Example 1

[0054] To produce the first solution (A), a 1.5-liter HDP container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 0.050 g of sodium chloride (0.005% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.01 g (0.001% of the final solution mass) of sodium carbonate and 0.01 g (0.001% of the final solution mass) of sodium bicarbonate are added successively to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0055] To produce the second solution (B), a 1-liter HDP container (container No. 3) is taken, and 30 ml of lukewarm water is poured into it. Then 0.062 g (0.006% of the final solution mass) of sodium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 0.021 g of sodium bisulfate (0.002% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0056] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0057] The mass of the final solution m (s-n) is

m(s-n)=900+100+0.050+0.01+0.01+0.062+0.021=1000.153 g.

[0058] Herewith, the mass ratios of the components (mass %) are as follows: [0059] sodium chloride (NaClO.sub.2)—0.00% [0060] sodium carbonate (Na.sub.2CO.sub.3)—0.001% [0061] sodium bicarbonate (NaHCO.sub.3)—0.001% [0062] sodium persulfate (Na.sub.2S.sub.2O.sub.8)—0.006% [0063] sodium bisulfate (NaHSO.sub.4)—0.002% [0064] water (H.sub.2O)—99.985%

[0065] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.5-7.0.

[0066] Then the final solution is poured into a 1-liter container and closed with a lid (the container and the lid are made of HDP). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0067] As a result, 0.003% chlorine dioxide solution is produced.

Example 2

[0068] To produce the first solution (A), a 1.5-liter PVC-U container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 5.12 g of sodium chloride (0.50% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 1.01 g (0.10% of the final solution mass) of sodium carbonate and 1.01 g (0.10% of the final solution mass) of sodium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0069] To produce the second solution (B), a 1-liter PVC-U container (container No. 3) is taken and 30 ml of lukewarm water is poured into it. Then 6.3 g (0.62% of the final solution mass) of sodium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 2.1 g of sodium bisulfate (0.21% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0070] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0071] The mass of the final solution m (s-n) is

m(s-n)=900+100+5.12+1.01+1.01+6.3+2.1=1015.54 g.

[0072] Herewith, the mass ratios of the components (mass %) are as follows: [0073] sodium chloride (NaClO.sub.2)—0.50% [0074] sodium carbonate (Na.sub.2CO.sub.3)—0.10% [0075] sodium bicarbonate (NaHCO.sub.3)—0.10% [0076] sodium persulfate (Na.sub.2S.sub.2O.sub.8)—0.62% [0077] sodium bisulfate (NaHSO.sub.4)—0.21% [0078] water (H.sub.2O)—98.47%

[0079] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.0-6.5.

[0080] Then the finished solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PVC-U). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0081] As a result, a 0.3% chlorine dioxide solution is produced.

Example 3

[0082] To produce the first solution (A), a 1.5-liter PTFE container (container No. 1) is taken and 150 ml of lukewarm water is poured into it. Then 37.730 g of sodium chloride (3.385% of the final solution mass) is added and dissolved in water for about 1 min. Then 400 ml of lukewarm water is added. Then a 150-ml HDP container is taken (container No. 2), 100 ml of water is poured into it. After that, 7.443 g (0.668% of the final solution mass) of sodium carbonate and 7.443 g (0.668% of the final solution mass) of sodium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0083] To produce the second solution (B), a 1-liter PTFE container (container No. 3) is taken and 250 ml of lukewarm water is poured into it. Then 46.425 g (4.165% of the final solution mass) of sodium persulfate is added and dissolved in water for about 1 min. Then 100 ml of lukewarm water is added. After that, 15.475 g of sodium bisulfate (1.388% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0084] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0085] The mass of the final solution m (s-n) is

m(s-n)=650+350+37.730+7.443+7.443+15.475+46.425=1114.516 g

[0086] Herewith, the mass ratios of the components (mass %) are as follows: [0087] sodium chloride (NaClO.sub.2)—3.385% [0088] sodium carbonate (Na.sub.2CO.sub.3)—0.668% [0089] sodium bicarbonate (NaHCO.sub.3)—0.668% [0090] sodium persulfate (Na.sub.2S.sub.2O.sub.8)—4.165% [0091] sodium bisulfate (NaHSO.sub.4)—1.388% [0092] water (H.sub.2O)—89.726%

[0093] After that, the pH value of the solution is measured with a pH meter—it is equal to 5.5-6.0.

[0094] Then the final solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PTFE). The solution is len in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0095] As a result, a 2% chlorine dioxide solution is produced.

Example 4

[0096] To produce the first solution (A), a 1.5-liter HDP container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 0.06 g of potassium chloride (0.006% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.013 g (0.001% of the final solution mass) of potassium carbonate and 0.012 g (0.001% of the final solution mass) of potassium bicarbonate are added successively to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0097] To produce the second solution (B), a 1-liter HDP container (container No. 3) is taken, and 30 ml of lukewarm water is poured into it. Then 0.070 g (0.00% of the final solution mass) of potassium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 0.024 g of potassium bisulfate (0.002% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0098] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0099] The mass of the final solution m (s-n) is

m(s-n)=900+100+0.06+0.013+0.012+0.070+0.024 1000.179 g

[0100] Herewith, the mass ratios of the components (mass %) are as follows: [0101] potassium chloride (KClO.sub.2)—0.006% [0102] potassium carbonate (K.sub.2CO.sub.3)—0.001% [0103] potassium bicarbonate (KHCO.sub.3)—0.001% [0104] potassium persulfate (K.sub.2S.sub.2O.sub.8)—0.006% [0105] potassium bisulfate (KHSO.sub.4)—0.002% [0106] water (H.sub.20)—99.984%

[0107] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.5-7.0.

[0108] Then the final solution is poured into a 1-liter container and closed with a lid (the container and the lid are made of HDP). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0109] As a result, 0.003% chlorine dioxide solution is produced.

Example 5

[0110] To produce the first solution (A), a 1.5-liter PVC-U container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 6.059 g of potassium chloride (0.595% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 1.315 g (0.129% of the final solution mass) of potassium carbonate and 1.202 g (0.118% of the final solution mass) of potassium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0111] To produce the second solution (B), a 1-liter PVC-U container (container No. 3) is taken and 30 ml of lukewarm water is poured into it. Then 7.150 g (0.702% of the final solution mass) of potassium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 2.379 g of potassium bisulfate (0.234% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0112] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0113] The mass of the final solution m (s-n) is

m(s-n)=900+100+6.059+1.315+1.202+7.150+2.379=1018.105 g

[0114] Herewith, the mass ratios of the components (mass %) are as follows: [0115] potassium chloride (KClO.sub.2)—0.595% [0116] potassium carbonate (K.sub.2CO.sub.3)—0.129% [0117] potassium bicarbonate (KHCO.sub.3)—0.118% [0118] potassium persulfate (K.sub.2S.sub.2O.sub.8)—0.702% [0119] potassium bisulfate (KHSO.sub.4)—0.234% [0120] water (H.sub.2O)—98.222%

[0121] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.0-6.5.

[0122] Then the finished solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PVC-U). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0123] As a result, a 0.3% chlorine dioxide solution is produced.

Example 6

[0124] To produce the first solution (A), a 1.5-liter PTFE container (container No. 1) is taken and 150 ml of lukewarm water is poured into it. Then 44.647 g of potassium chloride (3.939% of the final solution mass) is added and dissolved in water for about 1 min. Then 400 ml of lukewarm water is added. Then a 150-ml HDP container is taken (container No. 2), 100 ml of water is poured into it. After that, 9.689 g (0.855% of the final solution mass) of potassium carbonate and 8.858 g (0.782% of the final solution mass) of potassium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0125] To produce the second solution (B), a 1-liter PTFE container (container No. 3) is taken and 250 ml of lukewarm water is poured into it. Then 52.685 g (4.648% of the final solution mass) of potassium persulfate is added and dissolved in water for about 1 min. Then 100 ml of lukewarm water is added. After that, 17.531 g of potassium bisulfate (1.547% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0126] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0127] The mass of the final solution m (s-n) is

m(s-n)=650+350+44.647+9.689+8.858+17.531+52.685=1133.410 g

[0128] Herewith, the mass ratios of the components (mass %) are as follows: [0129] potassium chloride (KClO.sub.2)—3.939% [0130] potassium carbonate (K.sub.2CO.sub.3)—0.855% [0131] potassium bicarbonate (KHCO.sub.3)—0.782% [0132] potassium persulfate (K.sub.2S.sub.2O.sub.8)—4.648% [0133] potassium bisulfate (KHSO.sub.4)—1.547% [0134] water (H.sub.2O)—88.229%

[0135] After that, the pH value of the solution is measured with a pH meter—it is equal to 5.5-6.0.

[0136] Then the final solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PTFE). The solution is len in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0137] As a result, a 2% chlorine dioxide solution is produced.

Example 7

[0138] To produce the first solution (A), a 1.5-liter HDP container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 0.048 g of ammonium chloride (0.005% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.009 g (0.001% of the final solution mass) of ammonium carbonate and 0.009 g (0.001% of the final solution mass) of ammonium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0139] To produce the second solution (B), a 1-liter PTFE container (container No. 3) is taken and 30 ml of lukewarm water is poured into it. Then 0.059 g (0.006% of the final solution mass) of ammonium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 0.020 g of ammonium bisulfate (0.002% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0140] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0141] The mass of the final solution m (s-n) is

m(s-n)=900+100+0.048+0.009+0.009+0.0594 0.020=1000.145

[0142] Herewith, the mass ratios of the components (mass %) are as follows: [0143] ammonium chloride (NH.sub.4ClO.sub.2)—0.005% [0144] ammonium carbonate (NH.sub.4CO.sub.3)—0.001% [0145] ammonium bicarbonate (NH.sub.4HCO.sub.3)—0.001% [0146] ammonium persulfate ((NH.sub.4).sub.2S.sub.2O.sub.8)—0.006% [0147] ammonium bisulfate (NH.sub.4HSO.sub.4)—0.002% [0148] water (H.sub.2O)—99.985%

[0149] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.5-7.0.

[0150] Then the final solution is poured into a 1,5-liter container and closed with a lid (the container and the lid are made of HDP). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0151] As a result, 0.003% chlorine dioxide solution is produced.

Example 8

[0152] To produce the first solution (A), a 1.5-liter PVC-U container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 4.864 g of ammonium chloride (0.479% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.915 g (0.090% of the final solution mass) of ammonium carbonate and 0.950 g (0.093% of the final solution mass) of ammonium bicarbonate are added successively to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0153] To produce the second solution (B), a 1-liter PVC-U container (container No. 3) is taken and 30 ml of lukewarm water is poured into it. Then 6.037 g (0.595% of the final solution mass) of ammonium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 2.012 g of ammonium bisulfate (0.198% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0154] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0155] The mass of the final solution m (s-n) is

m(s-n)=900+100+4.864+0.915+0.950+6.037+2.012=1014.778

[0156] Herewith, the mass ratios of the components (mass %) are as follows: [0157] ammonium chloride (NH.sub.4ClO.sub.2)—0.479% [0158] ammonium carbonate ((NH.sub.4).sub.2CO.sub.3)—0.090% [0159] ammonium bicarbonate (NH.sub.4HCO.sub.3)—0.093% [0160] ammonium persulfate ((NH.sub.4).sub.2S.sub.2O.sub.8)—0.595% [0161] ammonium bisulfate (NH.sub.4HSO.sub.4)—0.198% [0162] water (H.sub.2O)—98.545%

[0163] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.0-6.5.

[0164] Then the finished solution is poured into a 1-liter container and closed with a lid (the container with the lid are made of PVC-U). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0165] As a result, a 0.3% chlorine dioxide solution is produced.

Example 9

[0166] To produce the first solution (A), a 1.5-liter PTFE container (container No. 1) is taken and 150 ml of lukewarm water is poured into it. Then 35.843 g of ammonium chloride (3.232% of the final solution mass) is added and dissolved in water for about 1 min. Then 400 ml of lukewarm water is added. Then a 150-ml HDP container is taken (container No. 2), 100 ml of water is poured into it. After that, 6.740 g (0.607% of the final solution mass) of ammonium carbonate and 6.998 g (0.631% of the final solution mass) of ammonium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0167] To produce the second solution (B), a 1-liter PTFE container (container No. 3) is taken and 250 ml of lukewarm water is poured into it. Then 44.490 g (4.012% of the final solution mass) of ammonium persulfate is added and dissolved in water for about 1 min. Then 100 ml of lukewarm water is added. After that, 14.824 g of ammonium bisulfate (1.337% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0168] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0169] The mass of the final solution m (s-n) is

m(s-n)=650+350+35.843+6.740+6.998+44.490+14.824=1108.895 g

[0170] Herewith, the mass ratios of the components (mass %) are as follows: [0171] ammonium chloride (NH.sub.4ClO.sub.2)—3.232% [0172] ammonium carbonate ((NH.sub.4).sub.2CO.sub.3)—0.607% [0173] ammonium bicarbonate (NH.sub.4HCO.sub.3)—0.631% [0174] ammonium persulfate ((NH.sub.4).sub.2S.sub.2O.sub.8)—4.012% [0175] ammonium bisulfate ((NH.sub.4)HSO.sub.4)—1.337% [0176] water (N.sub.2O)—90.181%

[0177] After that, the pH value of the solution is measured with a pH meter—it is equal to 5.5-6.0.

[0178] Then the final solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PTFE). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0179] As a result, a 2% chlorine dioxide solution is produced.

Example 10

[0180] To produce the first solution (A), a 1.5-liter HDP container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 0.049 g of calcium chloride (0.005% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.009 g (0.001% of the final solution mass) of calcium carbonate and 0.010 g (0.001% of the final solution mass) of calcium bicarbonate are added successively to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0181] To produce the second solution (B), a 1-liter HDP container (container No. 3) is taken, and 30 ml of lukewarm water is poured into it. Then 0.060 g (0.006% of the final solution mass) of calcium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 0.020 g of calcium bisulfate (0.002% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0182] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0183] The mass of the final solution m (s-n) is

m(s-n)=900+100+0.049+0.009+0.010+0.060+0.020=1000.148 g

[0184] Herewith, the mass ratios of the components (mass %) are as follows: [0185] calcium chloride (Ca(ClO.sub.2).sub.2)—0.005% [0186] calcium carbonate (CaCO.sub.3)—0.001% [0187] calcium bicarbonate (Ca(HCO.sub.3).sub.2)—(0.001% [0188] calcium persulfate (CaS.sub.2O.sub.8)—0.006% [0189] calcium bisulfate (Ca(HSO.sub.4).sub.2)—0.002% [0190] water (H.sub.2O)—99.985%

[0191] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.5-7.0.

[0192] Then the final solution is poured into a 1-liter container and closed with a lid (the container and the lid are made of HDP). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0193] As a result, 0.003% chlorine dioxide solution is produced.

Example 11

[0194] To produce the first solution (A), a 1.5-liter PVC-U container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 4.978 g of calcium chloride (0.490% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 nil of water is poured into it. After that, 0.952 g (0.094% of the final solution mass) of calcium carbonate and 0.974 g (0.096% of the final solution mass) of calcium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0195] To produce the second solution (B), a 1-liter PVC-U container (container No. 3) is taken and 30 nil of lukewarm water is poured into it. Then 6.143 g (0.605% of the final solution mass) of calcium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 2.047 g of calcium bisulfate (0.202% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0196] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0197] The mass of the final solution m(s-n) is

m(s-n)=900+100+4.978+0.952+0.974+6.143+2.047=1015.094 g

[0198] Herewith, the mass ratios of the components (mass %) are as follows: [0199] calcium chloride (Ca(ClO.sub.2).sub.2)—0.490% [0200] calcium carbonate (CaCO.sub.3)—0.094% [0201] calcium bicarbonate (Ca(HCO.sub.3).sub.2)—0.096% [0202] calcium persulfate (CaS.sub.2O.sub.8)—0.605% [0203] calcium bisulfate (Ca(HSO.sub.4).sub.2)—0.202% [0204] water (H.sub.2O)—98.513%

[0205] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.0-6.5.

[0206] Then the finished solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PVC-U). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0207] As a result, a 0.3% chlorine dioxide solution is produced.

Example 12

[0208] To produce the first solution (A), a 1.5-liter PTFE container (container No. 1) is taken and 150 ml of lukewarm water is poured into it. Then 36.682 g of calcium chloride (3.301% of the final solution mass) is added and dissolved in water for about 1 min. Then 400 ml of lukewarm water is added. Then a 150-ml HDP container (container No. 2) is taken, 100 ml of water is poured into it. After that, 7.021 g (0.632% of the final solution mass) of calcium carbonate and 7.175 g (0.646% of the final solution mass) of calcium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0209] To produce the second solution (B), a 1-liter PTFE container (container No. 3) is taken and 250 ml of lukewarm water is poured into it. Then 45.270 g (4.074% of the final solution mass) of calcium persulfate is added and dissolved in water for about 1 min. Then 100 ml of lukewarm water is added. After that, 15.082 g of calcium bisulfate (1.357% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0210] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0211] The mass of the final solution m (s-n) is

m(s-n)=650+350+36.682+7.021+7.175+15.082+45.270=1111.23 g

[0212] Herewith, the mass ratios of the components (mass %) are as follows: [0213] calcium chloride (Ca(ClO.sub.2).sub.2—3.301% [0214] calcium carbonate (CaCO.sub.3)—0.632% [0215] calcium bicarbonate (Ca(HCO.sub.3).sub.2)—0.646% [0216] calcium persulfate (CaS.sub.2O.sub.8)—4.074% [0217] calcium bisulfate (Ca(HSO.sub.4).sub.2—1.357% [0218] water (H.sub.2O)—89.990%

[0219] After that, the pH value of the solution is measured with a pH meter—it is equal to 5.5-6.0.

[0220] Then the final solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PTFE). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0221] As a result, a 2% chlorine dioxide solution is produced.

Example 13

[0222] To produce the first solution (A), a 1.5-liter HDP container (container No. 1) is taken and 15 ml of lukewarm water is poured into it. Then 0.045 g of magnesium chloride (0.005% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.008 g (0.001% of the final solution mass) of magnesium carbonate and 0.009 g (0.001% of the final solution mass) of magnesium bicarbonate are added successively to container No. 2 and stirred in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0223] To produce the second solution (B), a 1-liter HDP container (container No. 3) is taken, and 30 nil of lukewarm water is poured into it. Then 0.056 g (0.006% of the final solution mass) of magnesium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 0.019 g of magnesium bisulfate (0.002% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0224] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0225] The mass of the final solution m (s-n) is

m(s-n)=900+100+0.045+0.008+0.009+0.056+0.019=1000.137 g

[0226] Herewith, the mass ratios of the components (mass %) are as follows: [0227] magnesium chloride (Mg(ClO.sub.2))—0.005% [0228] magnesium carbonate (MgCO.sub.3)—0.001% [0229] magnesium bicarbonate (Mg(HCO.sub.3).sub.2)—0.001% [0230] magnesium persulfate (MgS.sub.2O.sub.8)—0.006% [0231] magnesium bisulfate (Mg(HSO.sub.4).sub.2)—0.002% [0232] water (H.sub.2O)—99.985%

[0233] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.5-7.0.

[0234] Then the final solution is poured into a 1-liter container and closed with a lid (the container and the lid are made of HDP). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0235] As a result, 0.003% chlorine dioxide solution is produced.

Example 14

[0236] To produce the first solution (A), a 1.5-liter PVC-U container (container No. 1) is taken and 15 nil of lukewarm water is poured into it. Then 4.523 g of magnesium chloride (0.446% of the final solution mass) is added and dissolved in water for about 1 min. Then 850 ml of lukewarm water is added. Then a 100-ml HDP container (container No. 2) is taken, 35 ml of water is poured into it. After that, 0.800 g (0.079% of the final solution mass) of magnesium carbonate and 0.878 g (0.087% of the final solution mass) of magnesium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0237] To produce the second solution (B), a 1-liter PVC-U container (container No. 3) is taken and 30 ml of lukewarm water is poured into it. Then 5.720 g (0.564% of the final solution mass) of magnesium persulfate is added and dissolved in water for about 1 min. Then 70 ml of lukewarm water is added. After that, 1.907 g of magnesium bisulfate (0.188% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0238] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0239] The mass of the final solution m (s-n) is

m(s-n)=900+100+4.523+0.800+0.878+5.720+1.907=1013.828 g.

[0240] Herewith, the mass ratios of the components (mass %) are as follows: [0241] magnesium chloride (Mg(ClO.sub.2).sub.2)—0.446% [0242] magnesium carbonate (MgCO.sub.3)—0.079% [0243] magnesium bicarbonate (Mg(HCO.sub.3).sub.2)—0.087% [0244] magnesium persulfate (MgS.sub.2O.sub.8)—0.564% [0245] magnesium bisulfate (Mg(HSO.sub.4).sub.2)—0.188%, [0246] water (H.sub.2O)—98.636%

[0247] After that, the pH value of the solution is measured with a pH meter—it is equal to 6.0-6.5.

[0248] Then the finished solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PVC-U). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0249] As a result, a 0.3% chlorine dioxide solution is produced.

Example 15

[0250] To produce the first solution (A), a 1.5-liter PTFE container (container No. 1) is taken and 150 ml of lukewarm water is poured into it. Then 33.328 g of magnesium chloride (3.025% of the final solution mass) is added and dissolved in water for about 1 min. Then 400 ml of lukewarm water is added. Then a 150-ml HDP container (container No. 2) is taken, 100 ml of water is poured into it. After that, 5.898 g (0.535% of the final solution mass) of magnesium carbonate and 6.467 g (0.587% of the final solution mass) of magnesium bicarbonate are sequentially added to container No. 2 and mixed in water for about 1 min. After that, the solution from container No. 2 is poured into container No. 1 and stirred for 10-15 minutes until completely dissolved.

[0251] To produce the second solution (B), a 1-liter PTFE container (container No. 3) is taken and 250 ml of lukewarm water is poured into it. Then 42.148 g (3.825% of the final solution mass) of magnesium persulfate is added and dissolved in water for about 1 min. Then 100 ml of lukewarm water is added. After that, 14.051 g of magnesium bisulfate (1.275% of the final solution mass) is added and stirred for 10-15 minutes until completely dissolved.

[0252] The solution (B) is added to solution (A) and mixed well for about 2 minutes.

[0253] The mass of the final solution m (s-n) is

m(s-n)=650+350+33.328+5.898+6.467+14.051+42.148=1101.892 g.

[0254] Herewith, the mass ratios of the components (mass %) are as follows: [0255] magnesium chloride (Mg(ClO.sub.2).sub.2)—3.025% [0256] magnesium carbonate (MgCO.sub.3)—0.535% [0257] magnesium bicarbonate (Mg(HCO.sub.3).sub.2)—0.587% [0258] magnesium persulfate (MgS.sub.2O.sub.8)—3.825% [0259] magnesium bisulfate (Mg(HSO.sub.4).sub.2)—1.275%. [0260] water (H.sub.2O)—90.753%

[0261] After that, the pH value of the solution is measured with a pH meter—it is equal to 5.5-6.0.

[0262] Then the final solution is poured into a 1.5-liter container and closed with a lid (the container with the lid are made of PTFE). The solution is left in the container for 48 hours at room temperature (20-25° C.). During this time, if possible, the container is shaken (2-3 times per day) for a more efficient reaction.

[0263] As a result, a 2% chlorine dioxide solution is produced.

INDUSTRIAL APPLICABILITY

[0264] The claimed invention makes it possible to produce a stabilized aqueous chlorine dioxide solution, which can be stored at a temperature up to 30° C. and normal atmospheric pressure for at least 12 months.