Protection liquid for water purification equipment

Abstract

The invention discloses a water purification equipment protection liquid which can be used in a low-temperature environment and is low in condensation point, low in corrosion, resistant to mildew and stable in performance. The water purification equipment protection liquid is prepared from the following raw materials in parts by weight: 40 to 50 parts of purified water, 50 to 60 parts of glycerol, 0.1 to 0.3 part of synthetic borneol, 0.2 to 0.3 part of sodium pyrosulfite, 0.1 to 0.3 part of sodium benzoate, 0.1 to 0.2 part of propyl alcohol, 0.1 to 0.2 part of ethanol, 0.1 to 0.3 part of charcoal powder and 0.1 to 0.3 part of alum. When being filled in the water purification equipment, the water purification membrane piece in the water purification equipment can be well protected.

Description

Technical Field

[0001] The invention relates to a protective liquid for water purification equipment, in particular to a protective liquid filled in water purification equipment for protecting a filter element and a membrane group of the water purification equipment. Background Art

[0002] Water purification equipment is widely used in the field of emergency rescue and disaster relief. When the water purification equipment is not in use, the water purification membrane parts of the water purification device, such as ultrafiltration membrane and reverse osmosis membrane, need to be immersed in protective liquid to prevent mildew and dry deformation.

[0003] At present, most water purification equipment used in the field of emergency rescue and disaster relief is fixed equipment directly installed on a mobile vehicle, such as a van. When the water purification equipment is not in use, a protective liquid is filled in the water purification equipment to protect the water purification membrane in the water purification equipment. The protective liquid used in existing water purification equipment cannot meet the use requirements due to condensation when it is stored outdoors in winter or driven to the place of use due to the low ambient temperature. In addition, there are many types of protective liquids currently used for water purification equipment, and the performance and quality vary greatly. During use, problems such as deterioration of the protective liquid and aging of the water purification membrane in the water purification equipment often occur. Therefore, it is necessary to develop a protective liquid for water purification equipment with low freezing point, low corrosion, mildew resistance, and stable performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a protective liquid for water purification equipment with low freezing point, low corrosion, mildew resistance and stable performance which can be used in low temperature environment.

[0005] To solve the above technical problems, the present invention provides a water purification equipment protective liquid, which comprises the following raw materials in parts by weight: 40-50 parts of pure water, 50-60 parts of propylene glycol, 0.1-0.3 parts of synthetic borneol, 0.2-0.3 parts of sodium pyrosulfite, 0.1-0.3 parts of sodium benzoate, 0.1-0.2 parts of propanol, 0.1-0.2 parts of ethanol, 0.1-0.2 parts of wood carbon powder, and 0.1-0.3 parts of alum.

[0006] Compared with the prior art, the implementation effects of the present invention are as follows: Glycerol is added to the formula of the present invention, and the anticoagulation property of the glycerol solution is utilized to lower the freezing point of the protection liquid, thereby preventing the protection liquid from condensing in a relatively low temperature environment.

[0007] The formula of the invention contains synthetic borneol, which is combined with sodium pyrosulfite, sodium benzoate, propanol and ethanol to enhance the sterilization effect and better prevent the growth of mildew.

[0008] The formula of the invention contains wood carbon powder and alum, which enhances the stability and reduces the corrosiveness of the liquid.

[0009] The protective liquid of the invention has low freezing point, low corrosion, strong mildew resistance and stable performance. DETAILED DESCRIPTION

[0010] The technical solution of the present invention is clearly and completely described below in conjunction with embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention. Example

[0011] With 40 parts by weight of pure water as the base liquid, 50 parts by weight of propylene glycol, 0.2 parts by weight of sodium pyrosulfite and 0.1 parts by weight of sodium benzoate are added in sequence, and the mixture is stirred and dissolved to obtain a dissolving solution; with 0.1 parts by weight of propanol as the base liquid, 0.1 parts by weight of ethanol, 0.1 parts by weight of synthetic borneol, 0.1 parts by weight of alum and 0.1 parts by weight of wood carbon powder are added in sequence, and the mixture is stirred to form a suspension; the suspension is added to the dissolving solution and stirred evenly. According to GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Method Part 4: Low Temperature Test", it is measured that there is no condensation at -38.5°C; it is injected into a water purification device and stored at room temperature for 180 days, and the filter membrane is checked for mildew by naked eye observation, and the seal is checked for aging failure by normal full-item comparison experiments; the color of the protective liquid does not change, and the pH value is stable. Example

[0012] With 50 parts by weight of pure water as the base liquid, 60 parts by weight of propylene glycol, 0.3 parts by weight of sodium pyrosulfite and 0.3 parts by weight of sodium benzoate are added in sequence, and the mixture is stirred and dissolved to obtain a dissolving solution; with 0.2 parts by weight of propanol as the base liquid, 0.2 parts by weight of ethanol, 0.3 parts by weight of synthetic borneol, 0.3 parts by weight of alum and 0.3 parts by weight of wood carbon powder are added in sequence, and the mixture is stirred to form a suspension; the suspension is added to the dissolving solution and stirred evenly. According to GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Method Part 4: Low Temperature Test", it is measured that there is no condensation at -40°C; it is injected into a water purification device and stored at room temperature for 180 days, and the filter membrane is checked for mildew by naked eye observation, and the seal is checked for aging failure by normal full-item comparison experiments; the color of the protective liquid does not change, and the pH value is stable. Example

[0013] With 45 parts by weight of pure water as the base liquid, 55 parts by weight of propylene glycol, 0.25 parts by weight of sodium pyrosulfite and 0.2 parts by weight of sodium benzoate are added in sequence, and the mixture is stirred and dissolved to obtain a dissolving solution; with 0.15 parts by weight of propanol as the base liquid, 0.15 parts by weight of ethanol, 0.2 parts by weight of synthetic borneol, 0.2 parts by weight of alum and 0.2 parts by weight of wood carbon powder are added in sequence, and the mixture is stirred to form a suspension; the suspension is added to the dissolving solution and stirred evenly. According to GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Method Part 4: Low Temperature Test", it is measured that there is no condensation at -39.4°C; it is injected into a water purification device and stored at room temperature for 180 days, and the filter membrane is checked for mildew by naked eye observation, and the seal is checked for aging failure by normal full-item comparison experiments; the color of the protective liquid does not change, and the pH value is stable.

[0014] Comparative Example 1 With 45 parts by weight of pure water as the base liquid, 30 parts by weight of propylene glycol, 0.2 parts by weight of sodium pyrosulfite and 0.1 parts by weight of sodium benzoate are added in sequence, and the mixture is stirred and dissolved to obtain a dissolving solution; with 0.2 parts by weight of propanol as the base liquid, 0.1 parts by weight of ethanol, 0.3 parts by weight of synthetic borneol, 0.2 parts by weight of alum and 0.1 parts by weight of wood carbon powder are added in sequence, and the mixture is stirred to form a suspension; the suspension is added to the dissolving solution and stirred evenly. According to GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Method Part 4: Low Temperature Test", it is measured that there is no condensation at -10°C; it is injected into a water purification device and stored at room temperature for 180 days, and the filter membrane is checked for mildew by naked eye observation, and the seal is checked for aging failure by normal full-item comparison experiments; the color of the protective liquid does not change, and the pH value is stable.

[0015] Comparative Example 2 Take 45 parts by weight of pure water as the base liquid, add 30 parts by weight of propylene glycol and 0.1 parts by weight of sodium metabisulfite in turn, stir and mix to dissolve. According to GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Method Part 4: Low Temperature Test", it was measured to condense at -10℃; injected into the water purification device and stored at room temperature for 180 days, the filter membrane was checked for mold spots, and the seal was aged and failed through the normal full-item comparison test, and the protective liquid was turbid.

[0016] Comparative Example 3 Take 45 parts by weight of pure water as the base liquid, add 40 parts by weight of propylene glycol and 0.1 parts by weight of sodium pyrosulfite, 0.1 parts by weight of sodium benzoate, 0.2 parts by weight of propanol, and 0.1 parts by weight of ethanol in turn, stir and mix to dissolve evenly. According to GJB150.4A-2009 "Military Equipment Laboratory Environmental Test Method Part 4: Low Temperature Test", it was measured to condense at -21℃; injected into the water purification device and stored at room temperature for 180 days, the filter membrane was checked for slight mildew, and through the normal full-item comparison experiment, the seal had aging failure phenomenon, and the color of the protective liquid changed slightly.

[0017] It will be understood that the above specific description of the embodiments of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Any modification or equivalent replacement of the present invention to achieve the same technical effect is within the protection scope of the present invention.

Claims

1. A water purification equipment protective liquid, characterized in that: The invention comprises the following raw materials in parts by weight: 40-50 parts of purified water, 50-60 parts of propylene glycol, 0.1-0.3 parts of synthetic borneol, 0.2-0.3 parts of sodium pyrosulfite, 0.1-0.3 parts of sodium benzoate, 0.1-0.2 parts of propanol, 0.1-0.2 parts of ethanol, 0.1-0.2 parts of charcoal powder and 0.1-0.3 parts of alum.

2. The water purification equipment protection liquid according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 40 parts of purified water, 50 parts of propylene glycol, 0.1 part of synthetic borneol, 0.2 part of sodium pyrosulfite, 0.1 part of sodium benzoate, 0.1 part of propanol, 0.1 part of ethanol, 0.1 part of charcoal powder and 0.1 part of alum.

3. The water purification equipment protection liquid according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 50 parts of purified water, 60 parts of propylene glycol, 0.3 parts of synthetic borneol, 0.3 parts of sodium pyrosulfite, 0.3 parts of sodium benzoate, 0.2 parts of propanol, 0.2 parts of ethanol, 0.3 parts of wood carbon powder and 0.3 parts of alum.