CN103548871B - Bactericide and preparation method thereof - Google Patents
Bactericide and preparation method thereof Download PDFInfo
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- CN103548871B CN103548871B CN201310552662.5A CN201310552662A CN103548871B CN 103548871 B CN103548871 B CN 103548871B CN 201310552662 A CN201310552662 A CN 201310552662A CN 103548871 B CN103548871 B CN 103548871B
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Abstract
The invention relates to the field of water treatment and in particular relates to a bactericide and a preparation method thereof. The bactericide comprises the following components in parts by weight: 50-200 parts of water, 10-30 parts of sodium carbonate, 1-10 parts of sodium hydroxide, 5-30 parts of dimethyl hydantoin, 25-60 parts of bromine and 10-30 parts of ammonia water with concentration of 28 percent. According to the bactericide and the preparation method thereof in the embodiment of the invention, the problem that dibromohydantoin is inconvenient to use due to the odor is solved. Secondary pollution in the sterilization process is avoided, and the bactericide is low in production cost and wide in application range.
Description
Technical field
The present invention relates to water treatment field, in particular to bactericide; In addition, the invention still further relates to the preparation method of bactericide.
Background technology
In Treatment of Industrial Water and municipal sewage treatment process, chemical bactericide is all adopted to control bacterium in water, algae.Bactericide comprises oxidizing bactericide and non oxidizing bactericide.Oxidizing bactericide rapidly and efficiently; And non oxidizing bactericide Continuous sterilization ability is strong, there is lasting bacteriostasis.
Clorox and sodium hypobromite, as oxidizing bactericide, are widely used in Treatment of Industrial Water and municipal sewage treatment aspect.Clorox is unstable, and easy temperature influence, not easily preserves for a long time.Correlation technique, usually can adopt and add organic amine in clorox, and clorox is stablized; Can also adopting and add buffer solution in clorox, by controlling the pH value of solution, increasing the stability of liquor natrii hypochloritis.But the clorox of instability is in sterilization process, can noxious products be produced, cause secondary pollution; And the active quantities of stable clorox is not high, predetermined bactericidal effect be reached, just must increase clorox usage amount.And sodium hypobromite has more advantage than clorox in water treatment, such as oxidisability is weak compared with clorox, can not produce secondary pollution, more more stable etc. than clorox under the condition that pH value is higher.But sodium hypobromite is the same with clorox, extremely unstable under normal storage conditions, and also sodium hypobromite not easily obtains, and bromine can only be preserved in aqueous by the method that efficiency is very low or extremely inconvenient.
At present, C5H6Br2N2O2 is bactericide conventional in water treatment.It is by by dimethyl hydantoin by bromo-reaction, with organic amine, bromine is stablized, after filtration, leave sediment, then solid is made in drying.During use, by being hydrolyzed in aqueous, discharge hypobromous acid root, and then produce hypobromous acid, reach sterilization object.But C5H6Br2N2O2 is slightly soluble in water, use very inconvenient, and have very strong impulse smell, therefore the scope of application is very limited.
Summary of the invention
The object of the present invention is to provide bactericide, to solve the above problems.
Another object of the present invention is to the preparation method that bactericide is provided, solve the problem with auxiliary.
Provide bactericide in an embodiment of the present invention, comprise 50 parts ~ 200 parts, water, 10 parts ~ 30 parts, sodium carbonate, dimethyl hydantoin 5 parts ~ 30 parts, 1 part ~ 10 parts, sodium hydroxide, bromine 25 parts ~ 60 parts, concentration are the ammoniacal liquor 10 parts ~ 30 parts of 28%; Above number is weight portion.
Additionally provide the preparation method of bactericide above-mentioned in an embodiment of the present invention, comprise the steps:
By weight, by sodium carbonate, water mixing, stirring and dissolving forms the first lysate;
In the first lysate, add dimethyl hydantoin, stir, add bromine, under the first predetermined temperature, reacted for first scheduled time, react fully, reaction of formation liquid, by reacting liquid filtering, be precipitated thing;
Add water to sediment, dissolve, then add sodium hydroxide, obtain the second lysate, the pH value of the second lysate is greater than 9; After second lysate is heated to the second predetermined temperature, add ammoniacal liquor, stir, after reacting for second scheduled time, obtain bactericide.
Bactericide of the above embodiment of the present invention and preparation method thereof, concrete preparative chemistry reaction equation is:
C
5H
8N
2O
2+2Br
2+2Na
2CO
3→C
5H
6Br
2N
2O
2+2NaBr+CO
2+H
2O
C
5H
6Br
2N
2O
2+H
2O→C
5H
8N
2O
2+2HOBr
2HOBr→2HBr+O
2
Br
-+NH
3→H
2N-Br
H
2N-Br+Br→HNBr
2
HOBr+NH
3→H
2N-OBr
The bactericide of preparation is by active oxygen, hypobromous acid root, the stable compound aqueous solution of active bromine and bromo-amine isoreactivity thing composition.By dimethyl hydantoin is passed through bromo-reaction, with organic amine, bromine is stablized, after filtration, leave sediment, then add ammoniacal liquor, what obtain is containing bromo-amine, bromide ion, stablizing of hypobromous acid root etc., the tasteless aqueous solution, solving C5H6Br2N2O2 has peculiar smell, uses inconvenient problem.
Due to the H in the present invention
2n-OBr stablizes when pH value is greater than 9, when being less than 9 once use pH, and H
2n-OBr → H
2nBr+ (O) (elemental oxygen), discharges elemental oxygen, reaches quick sterilization effect.Because bromo-amine is stablized, also have good bactericidal effect, therefore bactericide provided by the invention has the feature of oxidizing bactericide and non oxidizing bactericide.Both there is quick sterilization ability, had again the antibacterial ability of long period; Biological degradability is good simultaneously.And bactericide is stable liquid, be easy to long-term preservation, tasteless, easy to use, can not secondary pollution be produced in sterilization process; Production cost is low, and the scope of application is wide.
Accompanying drawing explanation
Fig. 1 shows the flow chart of the preparation method of bactericide provided by the invention.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
The bactericide that the present embodiment provides, comprise 50 parts ~ 200 parts, water, 10 parts ~ 30 parts, sodium carbonate, 1 part ~ 10 parts, sodium hydroxide, dimethyl hydantoin 5 parts ~ 30 parts, bromine 25 parts ~ 60 parts, concentration be 28% ammoniacal liquor 10 parts ~ 30 parts; Above number is weight portion.
Preferably, count by weight, 70 parts ~ 150 parts, water.
Preferably, count by weight, 20 parts ~ 30 parts, sodium carbonate.
Preferably, count by weight, 1 part ~ 5 parts, sodium hydroxide.
Preferably, count by weight, dimethyl hydantoin 10 parts ~ 25 parts, concentration is the ammoniacal liquor 10 parts ~ 20 parts of 28%.
As shown in Figure 1, the preparation method of the bactericide that the present embodiment provides, comprises the steps:
S101: by weight, by sodium carbonate, water mixing, stirring and dissolving forms the first lysate;
S102: add dimethyl hydantoin in the first lysate, stir, add bromine, under the first predetermined temperature, reacted for first scheduled time, reacts fully, reaction of formation liquid, by reacting liquid filtering, be precipitated thing;
S103: add water to sediment, dissolve, then add sodium hydroxide, obtain the second lysate, the pH value of the second lysate is greater than 9; After second lysate is heated to the second predetermined temperature, add ammoniacal liquor, stir, after reacting for second scheduled time, obtain bactericide.
Preferably, in a step 102, the first predetermined temperature is 10 DEG C ~ 20 DEG C.
Preferably, in a step 102, first scheduled time was 30 minutes ~ 90 minutes.
Preferably, in step 103, the pH value of the second lysate is 9 ~ 13.
Preferably, in step 103, the second predetermined temperature is 40 DEG C ~ 80 DEG C.
Preferably, in step 103, second scheduled time was 15 minutes ~ 60 minutes.
Due to the H in the present invention
2n-OBr can stable existence between pH value 9 ~ 13, when being less than 9 once use pH, and H
2n-OBr → H
2nBr+ (O) (elemental oxygen), discharges elemental oxygen, reaches quick sterilization effect.Because bromo-amine is stablized, also have good bactericidal effect, therefore the present invention has the feature of oxidizing bactericide and non oxidizing bactericide.Both there is quick sterilization ability, had again the antibacterial ability of long period; Biological degradability is good simultaneously.And bactericide is stable liquid, be easy to long-term preservation, tasteless, easy to use, can not secondary pollution be produced in sterilization process; Production cost is low, and the scope of application is wide.
The concrete preparation example of the bactericide provided for the present embodiment below:
Preparation example 1:
Be dissolved in the water of 70 parts by 25 parts of sodium carbonate, after abundant stirring and dissolving, control temperature is between 10 DEG C ~ 20 DEG C.In solution, add the dimethyl hydantoin of 13 parts, after stirring and dissolving, add the bromine of 32 parts, react 90 minutes; After having reacted, filter, leave sediment, add water 70 parts, 2 parts, hydro-oxidation sodium, the pH value of solution is the alkaline solution of 9, stir, dissolve, simultaneously by heating temperatures to 50 DEG C, the concentration adding 15 parts is again the ammoniacal liquor of 28%, stirs, reacts 30 minutes, obtain bactericide after cooling.
Preparation example 2:
30 parts of sodium carbonate are dissolved in the water of 70 parts, after abundant stirring and dissolving, control temperature, between 10 DEG C ~ 20 DEG C, adds the dimethyl hydantoin of 13 parts, after stirring and dissolving in alkaline solution, add the bromine of 40 parts, react after within 90 minutes, having reacted, filter, leave sediment, add water 70 parts, 3 parts, hydro-oxidation sodium, the pH value of solution is the alkaline solution of 10, stirs, dissolve, temperature is added to 40 DEG C, then the concentration adding 20 parts is the ammoniacal liquor of 28% simultaneously, stirs, react 30 minutes, after cooling, obtain bactericide.
Preparation example 3:
Be dissolved in the water of 70 parts by 25 parts of sodium carbonate, after abundant stirring and dissolving, add the dimethyl hydantoin of 15 parts in alkaline solution, after stirring and dissolving, control temperature, between 10 DEG C ~ 20 DEG C, adds the bromine of 35 parts, reacts 90 minutes; After having reacted, filter, leave sediment, add water 70 parts, 4 parts, hydro-oxidation sodium, the pH value of solution is the alkaline solution of 11, stirs, and dissolves, temperature is added to 40 DEG C simultaneously, the concentration adding 15 parts is again the ammoniacal liquor of 28%, stirs, reacts 40 minutes, obtain bactericide after cooling.
Preparation example 4:
30 parts of sodium carbonate are dissolved in the water of 70 parts, after abundant stirring and dissolving.In alkaline solution, add the dimethyl hydantoin of 25 parts, after stirring and dissolving, control temperature, between 10 DEG C ~ 20 DEG C, adds the bromine of 60 parts, reacts 60 minutes; Filter, leave sediment, add water 70 parts, 4 parts, hydro-oxidation sodium, the pH value of solution is the alkaline solution of 11, stirs, and dissolves, temperature is added to 60 DEG C, then the concentration adding 15 parts is the ammoniacal liquor of 28% simultaneously, stirs, reacts 30 minutes, obtain bactericide after cooling.
Preparation example 5:
25 parts of sodium carbonate are dissolved in the water of 70 parts, after abundant stirring and dissolving.In alkaline solution, add the dimethyl hydantoin of 14 parts, after stirring and dissolving, control temperature, between 10 DEG C ~ 20 DEG C, adds the bromine of 40 parts, reacts 90 minutes; Filter, leave sediment, add water 70 parts, 5 parts, hydro-oxidation sodium, the pH value of solution is the alkaline solution of 12, stirs, and dissolves, temperature is added to 50 DEG C, then the concentration adding 20 parts is the ammoniacal liquor of 28% simultaneously, stirs, reacts 30 minutes, obtain bactericide after cooling.
Following table 1.1 is the experimental data table (evaluating basis: with reference to the static sterilization of China Petrochemical Industry's " cooling water analysis and test method " 709 of the bacteriostasis of bactericide provided by the invention (effective content 10%); Content of the test: heterotroph, starter bacteria content 1.0 × 10
5individual/liter; Bactericide adopts impact to add):
Following table 1.2 is the experimental data table (evaluating basis: " biological monitoring of environmental monitoring technology specification " (water environment) part 363-1986(State Bueau of Environmental Protection) of the bacteriostasis of bactericide provided by the invention (effective content 10%); Assessment method: the mensuration-MTF method of coli-group in water; Evaluation project: Escherichia coli; Bactericide adopts continuity to add):
As shown in table 1.1 and table 1.2, bactericide provided by the invention has the feature of oxidizing bactericide and non oxidizing bactericide, and namely sterilization rapidly and efficiently, and it is long to continue the antibacterial time, can continue antibacterially to reach 72 hours.
Following table 1.3 is bactericide provided by the invention, and temperature is to the test experiments data of the stability influence of bactericide:
As shown in table 1.3, bactericide provided by the invention is as oxidizing bactericide, and stability is very good, is easy to long-term preservation, and-10 DEG C non-crystallizable; Under 40 DEG C of conditions, preserve 180 days, effective content only have lost 8%; Therefore the scope of application is wide, preservation, convenient transportation.
Following table 1.4 be bactericide provided by the invention to the corrosive experimental data table (according to GB/T18175-200) of water treatment facilities:
| Project | Content | Remarks |
| Test piece material | A3 carbon steel | A3 carbon steel |
| Water treatment agent title | Bactericide of the present invention | Blank |
| Water treatment agent concentration (mg/L) | 10 | 0 |
| Test solution pH value | 8.3 | 8.3 |
| Test solution temperature (DEG C) | 45±1 | 45±1 |
| Test period (hour) | 200 | 200 |
| Rate of corrosion (mm/a) | 0.089 | 0.091 |
As shown in table 1.4, the pipeline of bactericide provided by the invention to water treatment facilities does not have corrosivity.
To sum up, bactericide provided by the invention, first, possesses the characteristic of oxidizing bactericide and non oxidizing bactericide, and namely sterilization is efficiently quick, and bacteriostasis is strong, and drug effect is long for perdurabgility; Secondly, bactericide is liquid, and good stability is tasteless, is easy to long-term preservation, easy to use, applied widely; Again, in use procedure, corrosion can not be produced to water treatment facilities; Again, in use procedure, biodegradability is good, produces, can not produce secondary pollution without harmful side product.Bactericide provided by the invention, manufacture craft is easy, and production cost is low, effective, is easy to suitability for industrialized production.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a bactericide, is characterized in that, comprise 50 parts ~ 200 parts, water, 10 parts ~ 30 parts, sodium carbonate, 1 part ~ 10 parts, sodium hydroxide, dimethyl hydantoin 5 parts ~ 30 parts, bromine 25 parts ~ 60 parts, concentration be 28% ammoniacal liquor 10 parts ~ 30 parts; Above number is weight portion;
The preparation method of described bactericide is as follows:
By weight, by sodium carbonate, water mixing, stirring and dissolving forms the first lysate;
In described first lysate, add described dimethyl hydantoin, stir, add described bromine, under the first predetermined temperature, reacted for first scheduled time, react fully, reaction of formation liquid, by reacting liquid filtering, be precipitated thing;
Add water to described sediment, dissolve, then add described sodium hydroxide, obtain the second lysate, the pH value of described second lysate is greater than 9; After described second lysate is heated to the second predetermined temperature, add described ammoniacal liquor, stir, after reacting for second scheduled time, obtain bactericide.
2. bactericide according to claim 1, is characterized in that, counts by weight, 20 parts ~ 30 parts, described sodium carbonate.
3. bactericide according to claim 1, is characterized in that, counts by weight, 1 part ~ 5 parts, described sodium hydroxide.
4. bactericide according to claim 1, is characterized in that, counts by weight, described dimethyl hydantoin 10 parts ~ 25 parts, and concentration is the described ammoniacal liquor 10 parts ~ 20 parts of 28%.
5. bactericide according to claim 1, is characterized in that, described first scheduled time is 30 minutes ~ 90 minutes; Described first predetermined temperature is 10 DEG C ~ 20 DEG C.
6. bactericide according to claim 1, is characterized in that, the pH value of described second lysate is 9 ~ 13.
7. bactericide according to claim 1, is characterized in that, described second predetermined temperature is 40 DEG C ~ 80 DEG C.
8. bactericide according to claim 1, is characterized in that, described second scheduled time is 15 minutes ~ 60 minutes.
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| CN1430894A (en) * | 2002-01-11 | 2003-07-23 | 中国石油天然气集团公司 | Biocide agent coutaining bromine named as powered bromine chlorin |
| CN101611717A (en) * | 2008-06-26 | 2009-12-30 | 李新旺 | Bromine-containing disinfectant |
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Effective date of registration: 20150528 Address after: 062455 Industrial Zone, Hejian City, Hebei, Cangzhou Patentee after: Hebei God chemical building materials Co., Ltd. Address before: 062454, 629, Hejian Road, Hejian Town, Hebei Province Patentee before: Shi Weijie |
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Address after: 062455 Industrial Zone, Hejian City, Hebei, Cangzhou Patentee after: Beauty Technology Co., Ltd. Address before: 062455 Industrial Zone, Hejian City, Hebei, Cangzhou Patentee before: Hebei God chemical building materials Co., Ltd. |