Portable domestic water disinfection method

Abstract

The invention discloses a portable domestic water disinfection method to solve the problems that existing calcium hypochlorite particles are long in dissolution time, time-consuming and labor-consuming in stirring and low in efficiency. The method comprises the following steps: preparing a container, adding tap water and calcium hypochlorite particles, mixing and standing, using and putting, and disinfecting. The dissolved calcium hypochlorite solution is prepared in advance according to the proportion of calcium hypochlorite particles to tap water being 1: 2 and diluted according to needs during use, the calcium hypochlorite solution with the stable available chlorine content can be prepared in a short time, the dissolution waiting time is greatly shortened, the working efficiency is improved, and the production cost is reduced. The operation process is simplified, and it is ensured that mistakes are not likely to happen during on-site practical operation.

Description

Technical Field

[0001] This application relates to the technical field of drinking water disinfection, and particularly to a portable method for disinfecting domestic water. Background Art

[0002] Calcium hypochlorite granules, as a solid disinfectant, have an available chlorine content of approximately 60% and have broad application prospects in the field of drinking water disinfection. Compared with sodium hypochlorite solution, it has the advantages of convenient transportation, easy access, lower cost, and less volatility.

[0003] However, in actual use, for example, when using calcium hypochlorite solution for domestic water disinfection in some remote areas, the following significant disadvantages exist in the method of on-site dissolution and stirring:

[0004] I. Long dissolution time: It has a slow dissolution rate in water and usually takes a long time to fully release its available chlorine component; a large number of experiments show that it takes about 1 hour for calcium hypochlorite granules to fully release their available chlorine component.

[0005] II. Frequent stirring is required: In order to ensure that calcium hypochlorite granules can dissolve evenly and fully exert their disinfection effect, frequent stirring is required during the dissolution process. Usually, stirring is required every 5 minutes. This frequent manual stirring is not only time-consuming and laborious but also inefficient, easily causing fatigue to the operator, thereby affecting the stirring effect and disinfection effect. Summary of the Invention

[0006] Therefore, this application provides a portable method for disinfecting domestic water to solve the problems of long dissolution time, time-consuming and laborious stirring, and low efficiency existing in existing calcium hypochlorite granules.

[0007] To achieve the above object, this application provides the following technical solutions:

[0008] A portable method for disinfecting domestic water, comprising the following steps:

[0009] Step 1. Prepare a container: Use a graduated container and calculate the number of containers to be carried according to the required amount of domestic water.

[0010] Step 2. Add tap water and calcium hypochlorite granules: Sequentially add tap water and calcium hypochlorite granules into the container, and the ratio of tap water to calcium hypochlorite granules is 2:1.

[0011] Step 3. Mixing and standing: After sealing the container, shake the container vigorously to fully mix the calcium hypochlorite granules with the tap water until all the calcium hypochlorite granules come into contact with the tap water; then place the mixed calcium hypochlorite solution in a dark environment and let it stand for at least 24 hours.

[0012] Step 4. Use and dosing: Carry the container filled with the prepared calcium hypochlorite solution. After arriving at the disinfection location, pour all the prepared calcium hypochlorite solution in all containers into a metering tank; then calculate the additional amount of water to be added according to the required dosing concentration.

[0013] Step 5. Disinfection operation: Add the calcium hypochlorite solution in the metering tank evenly into the domestic water to be disinfected according to the dosing concentration.

[0014] Optionally, the container is a plastic bottle with a volume of 1000 mL and the accuracy of its scale reaches at least 10 mL.

[0015] Optionally, in Step 2, the amount of tap water added is 600 mL and the amount of calcium hypochlorite particles added is 300 g.

[0016] Optionally, in Step 3, the ambient temperature for the calcium hypochlorite solution to stand is between 5°C and 30°C.

[0017] Optionally, in Step 5, an ultrafiltration membrane filament is provided in the metering tank, and the outlet end of the ultrafiltration membrane filament is connected to the dosing point of the domestic water to be disinfected through a dosing pump.

[0018] Optionally, the ultrafiltration membrane filament is a PVDF hollow fiber ultrafiltration membrane filament with a spiral structure.

[0019] Optionally, it further includes a controller, and the controller is connected to the dosing pump.

[0020] Compared with the prior art, the present application has at least the following beneficial effects:

[0021] 1. Based on further analysis and research of the problems in the prior art, the present application provides a portable method for disinfecting domestic water, mainly used for disinfecting domestic water including drinking water or washing water. Prepare the dissolved calcium hypochlorite solution in advance according to the ratio of calcium hypochlorite particles to tap water of 1:2, and dilute it as needed during use. It can prepare a calcium hypochlorite solution with a stable available chlorine content in a short time. This method greatly reduces the dissolution waiting time, not only improves work efficiency but also simplifies the operation process, ensuring that it is not easy to make mistakes during on-site operation.

[0022] 2. The container of the present application uses a 1000 mL plastic bottle to make a calcium hypochlorite solution containing 300 g of calcium hypochlorite particles. Each plastic bottle can provide approximately 180 grams of available chlorine. It has the advantages of low cost, convenient purchase, and easy to carry and transport, and is especially suitable for use in remote areas or places with inconvenient transportation; at the same time, this fixed-dose design enables operators to quickly and accurately calculate the required disinfection dose without on-site weighing and preparation.

[0023] 3. The present application also provides ultrafiltration membrane filaments in the metering box, which are added to the chemical dosing point of the domestic water to be disinfected through a chemical dosing pump; the ultrafiltration membrane filaments are PVDF hollow fiber ultrafiltration membrane filaments and adopt a spiral structure, which improves the filtration efficiency and production volume, extends the service life of the chemical dosing pump, saves space, and is also convenient for installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing the present application; for example, those skilled in the art are capable of making routine adjustments or further optimizations to the addition / deletion / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concept disclosed in the present application and the exemplary drawings.

[0025] Figure 1 Schematic diagram of a plastic bottle with scale provided by an embodiment of the present application;

[0026] Figure 2 For Figure 1 Schematic diagram of tap water and calcium hypochlorite particles added therein.

[0027] Description of reference numerals:

[0028] 1. Plastic bottle; 2. Tap water; 3. Calcium hypochlorite particles. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] In the description of the present application: Unless otherwise specified, "a plurality" means two or more. Terms such as "first", "second", "third", etc. in the present application are intended to distinguish the objects being referred to and do not have special significance in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0031] Terms such as "upper", "lower", "left", "right", "middle", etc. cited in the present application are usually indications of the general relative positional relationship for the convenience of intuitively understanding with reference to the drawings, and are not absolute limitations on the positional relationship in the actual product.

[0032] An embodiment of the present application, as Figure 1 , Figure 2 shown, a portable domestic water disinfection method includes the following steps:

[0033] Step 1. Prepare the container: Use a graduated container and calculate the number of containers to be carried according to the required amount of domestic water.

[0034] Step 2. Add tap water 2 and calcium hypochlorite particles 3: Sequentially add tap water 2 and calcium hypochlorite particles 3 into the interior of the container, and the ratio of tap water 2 to calcium hypochlorite particles 3 is 2:1.

[0035] Step 3. Mixing and standing: After sealing the container, shake the container vigorously to fully mix the calcium hypochlorite particles 3 with the tap water 2 until all the calcium hypochlorite particles 3 come into contact with the tap water 2; then place the mixed calcium hypochlorite solution in a light-proof environment and let it stand for at least 24 hours to allow the calcium hypochlorite to fully release the active chlorine component.

[0036] Step 4. Use and dosing: Carry the container filled with the prepared calcium hypochlorite solution. After arriving at the disinfection site, pour all the prepared calcium hypochlorite solution in all the containers into a metering tank, which is large enough to hold the required calcium hypochlorite solution; then calculate the additional amount of water to be added according to the required dosing concentration.

[0037] Step 5. Disinfection operation: Add the calcium hypochlorite solution in the metering tank into the domestic water to be disinfected uniformly according to the dosing concentration; the domestic water includes drinking water or washing water.

[0038] Preferably, the container is a plastic bottle 1 with a volume of 1000 mL, and the scale of the plastic bottle 1 should be clearly visible to accurately measure the liquid volume, and the accuracy of its scale reaches at least 10 mL to ensure the accuracy of the operation.

[0039] Further preferably, in Step 2, the addition amount of tap water 2 is 600 mL, and the addition amount of calcium hypochlorite particles 3 is 300 g.

[0040] Still further preferably, in Step 3, to avoid direct sunlight, the ambient temperature for standing the calcium hypochlorite solution is between 5°C and 30°C to ensure the reaction effect.

[0041] Preferably, in Step 5, an ultrafiltration membrane filament is provided in the metering tank, and the outlet end of the ultrafiltration membrane filament is connected to the dosing point of the domestic water to be disinfected through a dosing pump.

[0042] Further preferably, the ultrafiltration membrane filaments are PVDF hollow fiber ultrafiltration membrane filaments and adopt a spiral structure, which can increase the turbulence of water flow, reduce the deposition of pollutants on the membrane surface, increase the effective filtration area, improve the filtration efficiency and water production, reduce the blockage of the chemical dosing pump, and extend the service life of the chemical dosing pump. At the same time, the spiral ultrafiltration membrane filaments can be easily integrated into the metering tank to form a compact filtration module. This design not only saves space but also facilitates installation and maintenance.

[0043] Even further preferably, it further includes a controller, and the controller is connected to the chemical dosing pump.

[0044] The ultrafiltration membrane filaments can effectively remove impurities such as fine particles, colloids, bacteria, and viruses in water, further purify the disinfection solution, and ensure its purity before entering the domestic water system, thereby improving the water quality safety of the final water supply. The chemical dosing pump can automatically adjust the dosing amount according to the flow signal and is controlled by the controller to ensure that the dosing amount of the secondary disinfectant (calcium hypochlorite solution) is accurate and uniform. This precise control can not only ensure the disinfection effect but also avoid water resource waste and potential environmental problems caused by excessive addition of disinfectant.

[0045] In summary, the present application has at least the following advantages:

[0046] 1. By preparing the dissolved calcium hypochlorite solution in advance according to the ratio of calcium hypochlorite particles to tap water of 1:2 and diluting it as needed during use, a calcium hypochlorite solution with a stable effective chlorine content can be prepared in a short time. This method greatly reduces the dissolution waiting time, not only improves work efficiency but also simplifies the operation process, ensuring that it is not easy to make mistakes during on-site operation. Even a novice can quickly get started and accurately execute tasks.

[0047] 2. The container uses a 1000 mL plastic bottle. During leisure time, a large amount of calcium hypochlorite solution containing 300 g of calcium hypochlorite particles can be prepared. Therefore, each plastic bottle can provide approximately 180 grams of available chlorine, and it has the advantages of low cost, convenient purchase, and convenient transportation. When used in remote areas, this plastic bottle is particularly practical due to its convenient carrying and low cost. Just carry the required number of 1000 mL plastic bottles to the addition site, then pour the solution in the plastic bottle into a large metering tank, and according to the concentration required for water disinfection, this pre-prepared solution can be added accordingly or the dilution water volume can be adjusted to achieve the best disinfection effect. This not only improves work efficiency but also ensures the simplicity and accuracy of the operation.

[0048] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written out should also be considered to be within the scope described in this specification.

Claims

1. A portable domestic water disinfection method, characterized in that, It includes the following steps: Step 1, Prepare containers: Use a graduated container to calculate the number of containers to be carried according to the required domestic water usage amount. Step 2, Add tap water and calcium hypochlorite granules: Sequentially add tap water and calcium hypochlorite granules into the interior of all containers, and the ratio of tap water to calcium hypochlorite granules is 2:

1. Step 3, Mix and let stand: After sealing the containers, shake the containers forcefully to fully mix the calcium hypochlorite granules with the tap water until all the calcium hypochlorite granules come into contact with the tap water; then place the mixed calcium hypochlorite solution in a light-proof environment and let it stand for at least 24 hours. Step 4, Use and dispense: Carry the containers filled with the prepared calcium hypochlorite solution. After arriving at the disinfection location, pour all the prepared calcium hypochlorite solution in all the containers into a metering box; then calculate the additional amount of water to be added according to the required dispensing concentration. Step 5, Disinfection operation: Uniformly add the calcium hypochlorite solution in the metering box into the domestic water to be disinfected according to the dispensing concentration.

2. The portable domestic water disinfection method according to claim 1, characterized in that, The container is a plastic bottle, and the volume of the plastic bottle is 1000 mL, and the accuracy of its scale reaches at least 10 mL.

3. The portable domestic water disinfection method according to claim 2, wherein In Step 2, the added amount of tap water is 600 mL, and the added amount of calcium hypochlorite granules is 300 g.

4. The portable domestic water disinfection method according to claim 1, wherein In Step 3, the environmental temperature for the calcium hypochlorite solution to stand is between 5°C and 30°C.

5. The portable domestic water disinfection method according to claim 1, characterized in that, In Step 5, an ultrafiltration membrane filament is provided in the metering box, and the outlet end of the ultrafiltration membrane filament is connected to the chemical dosing point of the domestic water to be disinfected through a chemical dosing pump.

6. The portable domestic water disinfection method according to claim 5, characterized in that, The ultrafiltration membrane filament is a PVDF hollow fiber ultrafiltration membrane filament and adopts a spiral structure.

7. The portable domestic water disinfection method according to claim 5, wherein It further includes a controller, and the controller is connected to the chemical dosing pump.

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