CN101878760A - Drinking water slow-release disinfection tablets and preparation method - Google Patents
Drinking water slow-release disinfection tablets and preparation method Download PDFInfo
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- CN101878760A CN101878760A CN 201010250931 CN201010250931A CN101878760A CN 101878760 A CN101878760 A CN 101878760A CN 201010250931 CN201010250931 CN 201010250931 CN 201010250931 A CN201010250931 A CN 201010250931A CN 101878760 A CN101878760 A CN 101878760A
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Abstract
The invention discloses drinking water slow-release disinfection tablets and a preparation method. The preparation method comprises the following steps of: uniformly mixing dichloro-dimethyl hydantoin and magnesium stearate powder, adding aqueous solution of polyvinyl alcohol, fully mixing, sieving to form particles, and drying and tabletting to obtain the drinking water slow-release disinfection tablets. The slow release time of the drinking water slow-release disinfection tablets in water reaches more than 50 days by using a nontoxic high molecular compound, namely the polyvinyl alcohol as a bonding agent; and the pH of raw water cannot be changed. A high-pressure tablet machine is avoided during preparation and tabletting is performed by using a common tablet machine, so that the process is simple and the cost is reduced. The tablets are suitable for disinfecting self-contained source water, storage water, swimming pool water, cistern, rural concentrated water supply and urban high-rise secondary water supply; and 30 tablets are added into each ton of water and the disinfection effect can last for 35 and 40 days.
Description
Technical field
The present invention relates to a kind of disinfection of drinking water medicament and preparation method, belong to the drinking water disinfection field.
Background technology
Self-contained water source water, storage water, the high-rise secondary water-supply in city and central water supply etc. exist in storing put procedure by the risk of microbial contamination, therefore in use need carry out disinfection, and slow-release disinfection are effective means of being convenient to this class water sterilization.The shortcoming that sustained disinfectant commonly used at present exists has: 1, the time ratio that slowly discharges in water is shorter, generally has only 4-13 days, and this just needs to increase the number of times of dispensing to the sterilization of the long-term water storage of needs; 2, sustained disinfectant can change the pH of former water, is not suitable for drinking; 3, can not use general tablet press machine in the preparation and need to adopt the tablet press machine of the tablet press machine of big pressure as 40 tons of pressure, the cost height has limited production.
Summary of the invention
First purpose of the present invention is to overcome the deficiency of above-mentioned technology, provides under a kind of condition that does not change former water pH, prolongs the drinking water slow-release disinfection tablets of slow-release time as much as possible.
Second purpose of the present invention provides the preparation method of a kind of reduction to the drinking water slow-release disinfection tablets of the requirement of production equipment.
Technical scheme of the present invention is summarized as follows:
A kind of drinking water slow-release disinfection tablets is to make with following method:
Take by weighing two chlordantoins and the dolomol powder mixes in the ratio of 50g:1.5-30g, adding 10-20ml concentration is the polyvinyl alcohol water solution of 2-30g/100ml, fully mixes, with 5-25 purpose sieve, make particle, drying, compressing tablet is promptly made a kind of drinking water slow-release disinfection tablets.
The ratio of described two chlordantoins and dolomol is 50g:10g.
The addition of described polyvinyl alcohol water solution is 15ml.
The concentration of described polyvinyl alcohol water solution is 3-5g/100ml.
A kind of preparation method of drinking water slow-release disinfection tablets comprises the steps:
Take by weighing two chlordantoins and the dolomol powder mixes in the ratio of 50g:1.5-30g, adding 10-20ml concentration is the polyvinyl alcohol water solution of 2-30g/100ml, fully mixes, with 5-25 purpose sieve, make particle, drying, compressing tablet is promptly made a kind of drinking water slow-release disinfection tablets.
The ratio of described two chlordantoins and dolomol is 50g:10g.
The addition of described polyvinyl alcohol water solution is 15ml.
The concentration of described polyvinyl alcohol water solution is 3-5g/100ml.
Drinking water slow-release disinfection tablets of the present invention uses the non-toxic high-molecular compound polyvinyl alcohol to be adhesive, and the slow-release time of drinking water slow-release disinfection tablets in water reached more than 50 days; Do not change the pH of former water; Do not need the tablet press machine of big pressure in the preparation, only need common tablet press machine compressing tablet, technology is simple, has reduced cost.Be suitable for the sterilization of self-contained water source water, storage water, swimming-pool water, water cellar, the high-rise secondary water-supply of rural area central water supply and city.Add by 30 in water per ton, Disinfection Effect can continue 35-40 days.
Embodiment
It is following that the invention will be further described by specific embodiment.
Embodiment 1
A kind of preparation of drinking water slow-release disinfection tablets:
50 gram two chlordantoins and 1.5g dolomol powder are mixed, the polyvinyl alcohol water solution that adds 15 milliliters 3g/100ml, mix mixing thoroughly, with 20 purpose sieve, make particle, dry through 70 ℃, add an amount of talcum powder, with common tablet press machine compressing tablet, the drinking water slow-release disinfection tablets of making, average sheet weighs 1 gram.
The distilled water that adds 2L in conical flask is put into the drinking water slow-release disinfection tablets of 1 present embodiment, changes water every day at a fixed time, and measures available chlorine content.After measured, the 51st, 52 day available chlorine content is reduced to 0.29mg/L, 0.27mg/L, and available chlorine content is higher than the limit value of the contents of residual chlorine of national drinking water standard regulation more than or equal to 0.3mg/L always before this, and therefore, the slow-release period of slowly-released drinking water disinfectant was at 50 days.
Embodiment 2
A kind of preparation of drinking water slow-release disinfection tablets:
50 gram two chlordantoins and 15g dolomol are mixed, the polyvinyl alcohol water solution that adds 15 milliliters 30g/100ml, mix mixing thoroughly, with 5 purpose sieve, make particle, dry through 70 ℃, add an amount of talcum powder, with common tablet press machine compressing tablet, the drinking water slow-release disinfection tablets of making, average sheet weighs 1 gram.
The distilled water that adds 2L in conical flask is put into the drinking water slow-release disinfection tablets of 1 present embodiment, changes water every day at a fixed time, and measures and imitate chlorinity.After measured, the 51st, 52 day available chlorine content is reduced to 0.29mg/L, 0.28mg/L, and available chlorine content is higher than the limit value of the contents of residual chlorine of national drinking water standard regulation more than or equal to 0.3mg/L always before this, and therefore, the slow-release period of slowly-released drinking water disinfectant was at 50 days.
Embodiment 3
A kind of preparation of drinking water slow-release disinfection tablets:
50 gram two chlordantoins and 30g dolomol are mixed, the polyvinyl alcohol water solution that adds 15 milliliters 15g/100ml, mix mixing thoroughly, with 20 purpose sieve, make particle, dry through 70 ℃, add an amount of talcum powder, with common tablet press machine compressing tablet, the drinking water slow-release disinfection tablets of making, average sheet weighs 1 gram.
The distilled water that adds 2L in conical flask is put into the drinking water slow-release disinfection tablets of 1 present embodiment, changes water every day at a fixed time, and measures and imitate chlorinity.After measured, the 51st, 52 day available chlorine content is reduced to 0.28mg/L, 0.27mg/L, and available chlorine content is higher than the limit value of the contents of residual chlorine of national drinking water standard regulation more than or equal to 0.3mg/L always before this, and therefore, the slow-release period of slowly-released drinking water disinfectant was at 50 days.
Embodiment 4
A kind of drinking water slow-release disinfection tablets is to make with following method:
Take by weighing two chlordantoins and the dolomol powder mixes in the ratio of 50g:10g, adding 10ml concentration is the polyvinyl alcohol water solution of 5g/100ml, fully mixes, with 25 purpose sieve, make particle, drying, compressing tablet is promptly made a kind of drinking water slow-release disinfection tablets.
The distilled water that adds 2L in conical flask is put into the drinking water slow-release disinfection tablets of 1 present embodiment, changes water every day at a fixed time, and measures available chlorine content.After measured, the 51st, 52 day available chlorine content is reduced to 0.28mg/L, 0.26mg/L, and available chlorine content is higher than the limit value of the contents of residual chlorine of national drinking water standard regulation more than or equal to 0.3mg/L always before this, and therefore, the slow-release period of slowly-released drinking water disinfectant was at 50 days.
Embodiment 5
A kind of drinking water slow-release disinfection tablets is to make with following method:
Take by weighing two chlordantoins and the dolomol powder mixes in the ratio of 50g:10g, adding 20ml concentration is the polyvinyl alcohol water solution of 2g/100ml, fully mixes, with 20 purpose sieve, make particle, drying, compressing tablet is promptly made a kind of drinking water slow-release disinfection tablets.
The distilled water that adds 2L in conical flask is put into the drinking water slow-release disinfection tablets of 1 present embodiment, changes water every day at a fixed time, and measures available chlorine content.After measured, the 51st, 52 day available chlorine content is reduced to 0.27mg/L, 0.27mg/L, and available chlorine content is higher than the limit value of the contents of residual chlorine of national drinking water standard regulation more than or equal to 0.3mg/L always before this, and therefore, the slow-release period of slowly-released drinking water disinfectant was at 50 days.
Embodiment 6
Be mixed with the drinking water slow-release disinfection aqueous solution with drinking water slow-release disinfection tablets of the present invention.
Get 5 beakers, add 1L distilled water in each beaker, utilizing water-bath to regulate water temperature is 20 ℃, regulates pH and is respectively 5.0,6.0,7.0,8.0,9.0, all with 1.5 ~ 4*10
4The concentration artificial contamination Escherichia coli (8099) of cfu/mL, the drinking water slow-release disinfection aqueous solution that adds embodiment 1 then, make contents of residual chlorine in each beaker meet country's " drinking water sanitary standard " (GB5749-2006) in the requirement of minimum content 0.3mg/L of regulation, get the 250ml water sample in effect after 10,15,30 minutes, be in 10% the sterilization sodium thiosulfate solution and chlorine residue with mass concentration immediately, cessation reaction.Compare with the water sample before the adding drinking water slow-release disinfection aqueous solution, total plate count and the total coli group in the water sample behind the detection adding drinking water slow-release disinfection aqueous solution estimated Disinfection Effect respectively.Through cultivating counting, total plate count does not all detect (value of detecting of total plate count and total coli group is consistent with total plate count that adds and total coli group numerical value in check contrast water sample) in the water sample behind the adding drinking water slow-release disinfection aqueous solution with total coli group, and the pH after the sterilization is respectively 4.9,5.8,6.9,7.9,8.8, illustrates that drinking water slow-release disinfection tablets pH influence to former water in sterilization of this development is less.
By above-mentioned experimental technique the drinking water slow-release disinfection tablets of embodiment 2,3,4 or 5 being mixed with the drinking water slow-release disinfection aqueous solution detects, add after testing that total plate count and total coli group all do not detect yet in the water sample behind the drinking water slow-release disinfection aqueous solution, and all less to the pH influence of former water.
Embodiment 7
Drinking water slow-release disinfection tablets with the embodiment of the invention 1 is mixed with the drinking water slow-release disinfection aqueous solution.
Get 4 beakers, add 1L distilled water in each beaker, regulate pH and be respectively 7.0, utilize water-bath to regulate water temperature and be respectively 0 ℃, 10 ℃, 20 ℃, 30 ℃, with 1.5 ~ 4*10
4The concentration artificial contamination Escherichia coli (8099) of cfu/mL, add the drinking water slow-release disinfection aqueous solution then, make contents of residual chlorine in each beaker meet country's " drinking water sanitary standard " (GB5749-2006) in the requirement of minimum content 0.3mg/L of regulation, get the 250ml water sample in effect after 10,15,30 minutes, be in 10% the sterilization sodium thiosulfate solution and chlorine residue with mass concentration immediately, cessation reaction.Compare with the water sample before the adding drinking water slow-release disinfection aqueous solution, total plate count and the total coli group in the water sample behind the detection adding drinking water slow-release disinfection aqueous solution estimated Disinfection Effect respectively.Through cultivating counting, total plate count does not all detect (value of detecting of total plate count and total coli group is consistent with total plate count that adds and total coli group numerical value in check contrast water sample) in the water sample behind the adding drinking water slow-release disinfection aqueous solution with total coli group, illustrates that water temperature Disinfection Effect influence to drinking water slow-release disinfection tablets in the time of 0 ℃-30 ℃ is not remarkable.
By above-mentioned experimental technique the drinking water slow-release disinfection tablets of embodiment 2,3,4 or 5 being mixed with the drinking water slow-release disinfection aqueous solution detects, add after testing that total plate count and total coli group all do not detect yet in the water sample behind the drinking water slow-release disinfection aqueous solution, and water temperature Disinfection Effect influence to drinking water slow-release disinfection tablets in the time of 0 ℃-30 ℃ is not remarkable.
Embodiment 8
Drinking water slow-release disinfection tablets with the embodiment of the invention 1 is mixed with the drinking water slow-release disinfection aqueous solution.
Get 4 beakers, add 1L distilled water in each beaker, regulate pH and be respectively 7.0, utilizing water-bath to regulate water temperature is 20 ℃, and the colority of water of regulating water to be sterilized with neutral humus solution is respectively 5,10,20,30 degree, with 1.5 ~ 4*10
4The concentration artificial contamination Escherichia coli (8099) of cfu/mL, add the drinking water slow-release disinfection aqueous solution then, make contents of residual chlorine in each beaker meet country's " drinking water sanitary standard " (GB5749-2006) in the requirement of minimum content 0.3mg/L of regulation, get the 250ml water sample in effect after 10,15,30 minutes, be in 10% the sterilization sodium thiosulfate solution and chlorine residue with mass concentration immediately, cessation reaction.Compare with the water sample before the adding drinking water slow-release disinfection aqueous solution, total plate count and the total coli group in the water sample behind the detection adding drinking water slow-release disinfection aqueous solution estimated Disinfection Effect respectively.Through cultivating counting, total plate count does not all detect (value of detecting of total plate count and total coli group is consistent with total plate count that adds and total coli group numerical value in check contrast water sample) in the water sample behind the adding drinking water slow-release disinfection aqueous solution with total coli group, and organic matter is not remarkable to the Disinfection Effect influence of drinking water slow-release disinfection.
By above-mentioned experimental technique the drinking water slow-release disinfection tablets of embodiment 2,3,4 or 5 being mixed with the drinking water slow-release disinfection aqueous solution detects, add after testing that total plate count and total coli group all do not detect yet in the water sample behind the drinking water slow-release disinfection aqueous solution, and organic matter is not remarkable to the Disinfection Effect influence of drinking water slow-release disinfection.
Embodiment 7
Get phreatic water and place 4 beakers respectively, with 1.5 ~ 4*10
4The concentration artificial contamination Escherichia coli (8099) of cfu/mL, the concentration that reaches 0.3mg/L, 0.5mg/L, 0.7mg/L, 0.9mg/L with available chlorine content in the water sample respectively adds the aqueous solution of preparing with the drinking water slow-release disinfection tablets of embodiment 1 preparation, take the water sample of 250ml after 10,15,30 minutes in effect, be in 10% the sterilization sodium thiosulfate solution and chlorine residue with mass concentration immediately, cessation reaction.Compare with the water sample before the adding drinking water slow-release disinfection aqueous solution, total plate count and the total coli group in the water sample behind the detection adding drinking water slow-release disinfection aqueous solution estimated Disinfection Effect respectively.Through cultivating counting, total plate count does not all detect (value of detecting of total plate count and total coli group is consistent with total plate count that adds and total coli group numerical value in check contrast water sample) in the water sample behind the adding drinking water slow-release disinfection aqueous solution with total coli group, illustrates that drinking water slow-release disinfection tablets can guarantee the microbiology safety of Drinking Water.
By above-mentioned experimental technique the drinking water slow-release disinfection tablets of embodiment 2,3,4 or 5 being mixed with the drinking water slow-release disinfection aqueous solution detects, add after testing that total plate count and total coli group all do not detect yet in the water sample behind the drinking water slow-release disinfection aqueous solution, and the explanation drinking water slow-release disinfection tablets can guarantee the microbiology safety of Drinking Water.
Claims (8)
1. drinking water slow-release disinfection tablets is characterized in that making with following method:
Take by weighing two chlordantoins and the dolomol powder mixes in the ratio of 50g:1.5-30g, adding 10-20ml concentration is the polyvinyl alcohol water solution of 2-30g/100ml, fully mixes, with 5-25 purpose sieve, make particle, drying, compressing tablet is promptly made a kind of drinking water slow-release disinfection tablets.
2. a kind of drinking water slow-release disinfection tablets according to claim 1, the ratio that it is characterized in that described two chlordantoins and dolomol is 50g:10g.
3. a kind of drinking water slow-release disinfection tablets according to claim 1, the addition that it is characterized in that described polyvinyl alcohol water solution is 15ml.
4. a kind of drinking water slow-release disinfection tablets according to claim 1, the concentration that it is characterized in that described polyvinyl alcohol water solution is 3-5g/100ml.
5. the preparation method of a drinking water slow-release disinfection tablets is characterized in that comprising the steps:
Take by weighing two chlordantoins and the dolomol powder mixes in the ratio of 50g:1.5-30g, adding 10-20ml concentration is the polyvinyl alcohol water solution of 2-30g/100ml, fully mixes, with 5-25 purpose sieve, make particle, drying, compressing tablet is promptly made a kind of drinking water slow-release disinfection tablets.
6. the preparation method of a kind of drinking water slow-release disinfection tablets according to claim 5, the ratio that it is characterized in that described two chlordantoins and dolomol is 50g:10g.
7. the preparation method of a kind of drinking water slow-release disinfection tablets according to claim 5, the addition that it is characterized in that described polyvinyl alcohol water solution is 15ml.
8. the preparation method of a kind of drinking water slow-release disinfection tablets according to claim 5, the concentration that it is characterized in that described polyvinyl alcohol water solution is 3-5g/100ml.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106417301A (en) * | 2016-09-12 | 2017-02-22 | 广东海洋大学 | Water environment solid sterilization tablet as well as preparation method and application thereof |
| CN106937632A (en) * | 2017-05-11 | 2017-07-11 | 江苏苏沃尚新材料科技有限公司 | A kind of swimming pool long-acting fungicide |
| CN108341440A (en) * | 2018-03-02 | 2018-07-31 | 北京利华消防工程有限公司 | The method of water treatment agent, preparation method and water treatment agent processing fire demand water |
| CN113135619A (en) * | 2020-01-19 | 2021-07-20 | 边文兵 | Scale inhibition base material and preparation method thereof, scale inhibition film, scale inhibition ball and scale inhibition sheet |
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| CN1091587A (en) * | 1993-02-19 | 1994-09-07 | 中国人民解放军59174部队 | Slowly-released drinking water disinfectant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1091587A (en) * | 1993-02-19 | 1994-09-07 | 中国人民解放军59174部队 | Slowly-released drinking water disinfectant |
Non-Patent Citations (3)
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| 《中国公共卫生》 19990831 石胜尧等 二氯异氰尿酸盐类消毒剂的试制与效果观察 第739-740页 1-8 第15卷, 第8期 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106417301A (en) * | 2016-09-12 | 2017-02-22 | 广东海洋大学 | Water environment solid sterilization tablet as well as preparation method and application thereof |
| CN106937632A (en) * | 2017-05-11 | 2017-07-11 | 江苏苏沃尚新材料科技有限公司 | A kind of swimming pool long-acting fungicide |
| CN108341440A (en) * | 2018-03-02 | 2018-07-31 | 北京利华消防工程有限公司 | The method of water treatment agent, preparation method and water treatment agent processing fire demand water |
| CN108341440B (en) * | 2018-03-02 | 2021-02-23 | 北京利华消防工程有限公司 | Water treatment agent, preparation method and method for treating fire-fighting water by using water treatment agent |
| CN113135619A (en) * | 2020-01-19 | 2021-07-20 | 边文兵 | Scale inhibition base material and preparation method thereof, scale inhibition film, scale inhibition ball and scale inhibition sheet |
| CN113135619B (en) * | 2020-01-19 | 2022-10-21 | 山东水创新材料有限公司 | Scale inhibition base material and preparation method thereof, scale inhibition film, scale inhibition ball and scale inhibition sheet |
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| CN101878760B (en) | 2013-04-03 |
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