阅读说明：本技术 一种净水杀菌沉淀药片及其制备方法 (Water purification sterilization precipitation tablet and preparation method thereof ) 是由 梅逸舟 于 2021-07-06 设计创作，主要内容包括：本发明涉及一种净水杀菌沉淀药片及其制备方法,所述的净水杀菌沉淀药片包括发泡外层、沉降中层和杀菌内核,所述发泡外层为柠檬酸与碳酸氢钠的混合物,所述沉降中层为阳离子聚丙烯酰胺和阴离子聚丙烯酰胺的混合物,所述杀菌内核为二氧化氯和纳米银的混合物；当将所述药片用于泥水净化时,发泡外层先与泥水接触后迅速产生二氧化碳气泡,迅速弥散形成酸碱平衡缓冲区域,用以调节沉降层与杀菌层的工作环境,减少相互作用；沉降中层的阳离子聚丙烯酰胺和阴离子聚丙烯酰胺分别沉降泥土中的不同悬浮颗粒,使之凝结成絮状并快速沉降；二氧化氯和纳米银组成的杀菌内核,可在3-5分钟内快速杀灭病原体；使用本发明所述药片用于泥水净化,沉降和杀菌均可充分完成。(The invention relates to a water purification sterilization precipitation tablet and a preparation method thereof, the water purification sterilization precipitation tablet comprises a foaming outer layer, a sedimentation middle layer and a sterilization inner core, the foaming outer layer is a mixture of citric acid and sodium bicarbonate, the sedimentation middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide, and the sterilization inner core is a mixture of chlorine dioxide and nano silver; when the tablet is used for purifying muddy water, the foaming outer layer is firstly contacted with the muddy water and then quickly generates carbon dioxide bubbles, and the carbon dioxide bubbles are quickly dispersed to form an acid-base balance buffer area so as to adjust the working environment of the sedimentation layer and the sterilization layer and reduce the interaction; respectively settling different suspended particles in the soil by the cationic polyacrylamide and the anionic polyacrylamide in the settling middle layer to enable the suspended particles to be coagulated into floccules and quickly settled; the sterilizing inner core consisting of chlorine dioxide and nano silver can quickly kill pathogens within 3-5 minutes; the tablet is used for muddy water purification, sedimentation and sterilization can be fully completed.)

1. The tablet is characterized by sequentially comprising a foaming outer layer, a sedimentation middle layer and a sterilization inner core from outside to inside, wherein the foaming outer layer is a mixture of citric acid and sodium bicarbonate, the sedimentation middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide, and the sterilization inner core is a mixture of chlorine dioxide and nano silver.

2. The tablet as claimed in claim 1, wherein the foaming layer is a mixture of citric acid and sodium bicarbonate at a mass ratio of (3-5): 1-2.

3. The water-purifying bactericidal pellet as claimed in claim 1, wherein the citric acid is food grade citric acid.

4. The water-purifying bactericidal pellet as claimed in claim 1, wherein the sodium bicarbonate is food grade sodium bicarbonate.

5. The tablet as claimed in claim 1, wherein the sedimentation middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide in a mass ratio of (1-2) to (1-3).

6. The water-purifying bactericidal pellet as claimed in claim 1, wherein the cationic polyacrylamide has an ionic degree of 30%.

7. The water-purifying bactericidal pellet as claimed in claim 1, wherein the anionic polyacrylamide has a molecular weight of 800 ten thousand.

8. The tablet of claim 1, wherein the bactericidal core is a mixture of chlorine dioxide and nano-silver in a mass ratio of (3-5) to (1-2).

9. The water-purifying bactericidal pellet as claimed in claim 8, wherein the nano silver has a particle size of 5-7 nm.

10. The process for preparing the water-purifying bactericidal pellet as claimed in claims 1 to 9, which comprises the steps of:

(1) mixing chlorine dioxide and nano silver, placing into a tabletting mold with the thickness of 1-1.5mm, and tabletting to obtain a sterilization core;

(2) taking cationic polyacrylamide and anionic polyacrylamide, uniformly mixing, putting into a tabletting mold with the thickness of 3-4mm, putting the sterilization inner core obtained in the step (1) into the tabletting mold, tabletting, and coating a sedimentation middle layer outside the sterilization inner core;

(3) and (3) uniformly mixing citric acid and sodium bicarbonate, putting into a 5-6mm tabletting mold, putting the medicine core obtained in the step (2) into the 5-6mm tabletting mold, and tabletting to obtain the purified water sterilization precipitation tablet.

Technical Field

The invention belongs to the technical field of water purification, and particularly relates to a water purification sterilization precipitation tablet and a preparation method thereof.

Background

With the development of national economy and the improvement of the income of the citizens, people not only put higher requirements on material culture life, but also pay more attention to the spiritual enjoyment in personal and collective activities. The changes are shown as the participation rate of outdoor exercises gradually increasing in the daily life of Chinese citizens, and people pay more attention to the spirit and physical enjoyment brought by the outdoor exercises in the informatization era of staying at home. The footprint of Chinese people is spread all over the world, and the field operation amount under various climates is also increasing continuously. Water is a source of life, and the cleaning and drinking of water are important links of logistics work in outdoor sports, field work and even military operations.

The problem of drinking water in open air is solved, and the problem of great difficulty is solved because the water quality is complex and is not easy to treat. In field operation, although a great amount of fresh water exists in rivers and lakes, the water cannot be directly drunk due to a great amount of microorganisms and pathogenic bacteria in the water body. If drinking polluted water, it will cause intestinal infectious diseases such as malaria.

At present, various water purifying products on the market mostly have the following problems: (1) the domestic products are separated in sterilization and precipitation effects; (2) foreign products have high price and unstable sterilization effect; (3) the precipitant and the bactericide can affect each other in the dispersion process due to the problem of the action mechanism, resulting in the reduction of the effect.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a water purification and sterilization precipitate tablet which can be widely used for outdoor sports, field survival and individual soldier water purification and a preparation method thereof. The water purification sterilization precipitation tablet consists of a foaming outer layer, a sedimentation middle layer and a sterilization inner core. The foaming layer is a mixed layer of citric acid and sodium bicarbonate powder, is used for wrapping tablet cores, reduces storage requirements and prolongs quality guarantee period, can quickly release gas when contacting with water to be purified, and adjusts acid-base balance of a contact area to form a working buffer area; the sedimentation middle layer is formed by mixing cationic polyacrylamide and anionic polyacrylamide powder and is used for quickly flocculating and settling soil particles in water to be purified after being released; the sterilization inner core is formed by mixing chlorine dioxide and nano silver powder and is used for killing pathogenic microorganisms in the precipitated water.

The technical scheme adopted by the invention is as follows:

the water purifying and sterilizing precipitating tablet sequentially comprises a foaming outer layer, a precipitating middle layer and a sterilizing inner core from outside to inside, wherein the foaming outer layer is a mixture of citric acid and sodium bicarbonate, the precipitating middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide, and the sterilizing inner core is a mixture of chlorine dioxide and nano silver.

The foaming outer layer is a mixture of citric acid and sodium bicarbonate according to a mass ratio of (3-5) to (1-2).

The citric acid is food grade citric acid.

The sodium bicarbonate is food-grade sodium bicarbonate.

The sedimentation middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide according to the mass ratio of (1-2) to (1-3).

The ionic degree of the cationic polyacrylamide is 30%.

The molecular weight of the anionic polyacrylamide is 800 ten thousand.

The bactericidal core is a mixture of chlorine dioxide and nano-silver according to a mass ratio of (3-5) to (1-2).

The particle size of the nano silver is 5-7 nm.

The preparation method of the water purification sterilization precipitation tablet comprises the following steps:

(1) mixing chlorine dioxide and nano silver uniformly, putting the mixture into a tabletting mold with the thickness of 1mm, and tabletting to obtain a sterilization core;

(2) taking cationic polyacrylamide and anionic polyacrylamide, uniformly mixing, putting into a tabletting mold with the thickness of 3mm, putting the sterilization inner core obtained in the step (1) into the tabletting mold, tabletting, and coating a sedimentation middle layer outside the sterilization inner core;

(3) and (3) uniformly mixing citric acid and sodium bicarbonate, putting into a 5mm tabletting mold, putting the medicine core obtained in the step (2) into the 5mm tabletting mold, and tabletting to obtain the purified water sterilizing precipitate tablet.

The water purification sterilization precipitation tablet comprises a foaming outer layer, a sedimentation middle layer and a sterilization inner core from outside to inside in sequence, wherein the foaming outer layer is a mixture of citric acid and sodium bicarbonate, the sedimentation middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide, and the sterilization inner core is a mixture of chlorine dioxide and nano silver; when the tablet is used for purifying muddy water, the foaming outer layer firstly contacts with the muddy water to quickly generate carbon dioxide bubbles which are quickly dispersed, citric acid is weakly acidic, and sodium bicarbonate is weakly alkaline, so that an acid-base balance buffering working area is formed between the foaming outer layer and the muddy water to adjust the working environment of the sedimentation layer and the sterilization layer and reduce interaction; the sedimentation middle layer is quickly dispersed under the action of a foaming agent (citric acid and sodium bicarbonate), and the cationic polyacrylamide and the anionic polyacrylamide respectively settle different suspended particles in the soil to enable the different suspended particles to be coagulated into floccules and quickly sedimentated; the sterilizing inner core consisting of chlorine dioxide and nano silver can quickly kill pathogens within 3-5 minutes; therefore, when the tablet is used for muddy water purification, the stirring is about 5 minutes, and the sedimentation and the sterilization can be fully completed. Then, the water is lightly filtered by a paper towel (the water can not be filtered in emergency), and the drinking water can be obtained. The tablet is placed in a cool, dry and dark place, and the quality guarantee period can reach 18 months.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a side sectional view of a tablet according to example 1 of the present invention;

figure 2 is a front cross-sectional view of a tablet according to example 1 of the present invention.

In the figure, 1-sterilization inner core, 2-sedimentation middle layer and 3-foaming outer layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are merely exemplary of the invention, and not of the invention in its entirety. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Example 1

The embodiment provides a tablet for purifying water, sterilizing and precipitating, which has a structure as shown in fig. 1 and fig. 2, and sequentially comprises a foaming outer layer, a precipitating middle layer and a sterilizing inner core from outside to inside, wherein the foaming outer layer is a mixture of citric acid and sodium bicarbonate, the precipitating middle layer is a mixture of cationic polyacrylamide and anionic polyacrylamide, and the sterilizing inner core is a mixture of chlorine dioxide and nano silver.

The water purification sterilization precipitation tablet comprises the following components in formula:

food grade citric acid, 30 mg;

food grade sodium bicarbonate, 20 mg;

cationic polyacrylamide (30% ionic strength), 15 mg;

anionic polyacrylamide (molecular weight 800 ten thousand), 15 mg;

chlorine dioxide, 15 mg;

nano silver (particle size 5nm), 5 mg.

The preparation method of the water purification, sterilization and precipitation tablet comprises the following steps:

(1) weighing chlorine dioxide and nano silver according to the weight, uniformly mixing, putting into a 1mm tabletting mold of an automatic tabletting machine, and tabletting to obtain a sterilization core capable of killing harmful flora in 1-1.5L of muddy water;

(2) weighing cationic polyacrylamide and anionic polyacrylamide according to the weight, uniformly mixing, putting into a tabletting mold with the thickness of 3mm, putting a sterilization inner core into the tabletting mold, coating tabletting, coating a sedimentation middle layer outside the sterilization inner core, and settling most suspended particles in 1-1.5L of muddy water;

(3) and (3) weighing citric acid and sodium bicarbonate according to the weight, uniformly mixing, putting into a 5mm tabletting mold, putting the medicine core obtained in the step (2) into the 5mm tabletting mold, and coating and tabletting to obtain a complete tablet, namely the water purification and sterilization precipitate tablet.

Example 2

This example provides a tablet for purifying and sterilizing water, which is different from example 1 only in that: the particle size of the nano silver is different, and the particle size of the nano silver is 7nm in the embodiment.

Example 3

This example provides a tablet for purifying and sterilizing water, which is different from example 1 only in that: the formulation composition was varied, in this example 25mg of citric acid and 15mg of sodium bicarbonate.

Example 4

This example provides a tablet for purifying and sterilizing water, which is different from example 1 only in that: the formulation composition is different, in this example, the dosage of the cationic polyacrylamide is 10mg, and the dosage of the anionic polyacrylamide is 20 mg.

Example 5

This example provides a tablet for purifying and sterilizing water, which is different from example 1 only in that: the formulation composition is different, in this example, the dosage of nano silver is 6mg, and the dosage of sodium bicarbonate is 12 mg.

Examples of the experiments

The water purification and sterilization tablets of the embodiment of the invention are used for purifying muddy water, and the detection results of various indexes such as pH, total hardness and the like of water before and after purification are shown in tables 1 and 2.

TABLE 1 sludge Water before purification

TABLE 2 purification of mud water

The analytical methods, instruments, and minimum detected concentrations are shown in Table 3.

TABLE 3

When the water purification, sterilization and precipitation tablet is used for purifying muddy water, the foaming outer layer firstly contacts with the muddy water to quickly generate carbon dioxide bubbles which are quickly dispersed, citric acid is weakly acidic, and sodium bicarbonate is weakly alkaline, so that an acid-base balance buffer working area is formed between the foaming outer layer and the muddy water, the working environment of the precipitation layer and the sterilization layer is adjusted, and interaction is reduced; the sedimentation middle layer is quickly dispersed under the action of a foaming agent, and different suspended particles in the soil are respectively settled by the cationic polyacrylamide and the anionic polyacrylamide to be coagulated into floccules and quickly settled; the sterilizing inner core consisting of chlorine dioxide and nano silver can quickly kill pathogens within 3-5 minutes; therefore, when the tablet is used for muddy water purification, the stirring is about 5 minutes, and the sedimentation and the sterilization can be fully completed. Then, the water is lightly filtered by a paper towel (the water can not be filtered in emergency), and the drinking water can be obtained. The tablet is placed in a cool, dry and dark place, and the quality guarantee period can reach 18 months.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.