CN111675294A - Degradable bactericide for sewage - Google Patents
Degradable bactericide for sewage Download PDFInfo
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- CN111675294A CN111675294A CN202010504384.6A CN202010504384A CN111675294A CN 111675294 A CN111675294 A CN 111675294A CN 202010504384 A CN202010504384 A CN 202010504384A CN 111675294 A CN111675294 A CN 111675294A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/02—Sulfur; Selenium; Tellurium; Compounds thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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Abstract
The invention provides a degradable bactericide for sewage, which is prepared from the following components, by weight, 3% -6% of a surfactant, 2% -3% of potassium hydrogen peroxymonosulfate, 1% -2% of sodium dichloroisocyanurate, 0.5% -1% of chlorine dioxide, 10% -15% of sodium hypochlorite, 7% -8% of a flocculating agent, 4% -5% of a high polymer material, 1% -2% of an auxiliary agent and the balance of water, wherein the surfactant comprises a mixture of polyacrylamide and fatty alcohol-polyoxyethylene ether sodium sulfate, the mixing ratio of the polyacrylamide to the fatty alcohol-polyoxyethylene ether sodium sulfate is 1: 0.05-0.1, the polyacrylamide and the water form a solution, and the ratio of the polyacrylamide to the water is 1: 55-60.
Description
Technical Field
The invention relates to the technical field of bactericides, in particular to a degradable bactericide for sewage.
Background
Biocides, also known as biocides, bactericidal algicides, microbicides, and the like, generally refer to chemical agents that are effective in controlling or killing microorganisms, bacteria, fungi, and algae, in aqueous systems. Internationally, it is a general term for agents for controlling various types of pathogenic microorganisms. According to the investigation, more than 8 million pathogenic microorganisms (eubacteria, bacillus, rickettsia, mycoplasma, virus, algae, etc.) harmful to plants are existed all over the world. Plant diseases cause enormous losses to the agricultural industry, whereby crops worldwide reduce the yield by about 500Mt per year on average. Historically, disasters such as severe famine and even hungry death of large numbers of people have occurred many times due to epidemic disease of certain plants. The use of fungicides is an economical and effective method for controlling plant diseases.
For example, chinese patent application No.: CN201810526660.1 discloses an amphoteric asymmetric high-efficiency bactericide for polymer-containing sewage, which is prepared by reacting tertiary amine, hydrogen chloride and epoxy chloropropane according to the molar ratio of (1-3) to obtain an intermediate 1; then, reacting the intermediate 1 with phosphorus oxychloride according to the dosage ratio of (0.25-0.35 mol) to (25-30 ml) to obtain an intermediate 2; reacting the intermediate 2 with sodium hydroxide to obtain an intermediate 3; the amount of the sodium hydroxide is used to make the aqueous solution of the intermediate 2 neutral; finally, the intermediate 3 and the metronidazole are reacted according to the molar ratio (0.9-1.1) to 1 to prepare the intermediate; the bactericide prepared by the invention belongs to a novel water treatment system bactericide with good bactericidal performance, and can be used for controlling bacteria in polymer-containing sewage in oil fields, treating factory-discharged sewage and the like.
Disclosure of Invention
In order to solve the problem of low biodegradability of the bactericide in the prior art, the invention provides a degradable bactericide for sewage.
The invention discloses a degradable bactericide for sewage, which is prepared from the following components in percentage by weight,
on the basis, the surfactant comprises a mixture of polyacrylamide and fatty alcohol-polyoxyethylene ether sodium sulfate, and the mixing ratio of the polyacrylamide to the fatty alcohol-polyoxyethylene ether sodium sulfate is 1: 0.05-0.1.
On the basis, the polyacrylamide and water form a solution, and the ratio of the polyacrylamide to the water is 1: 55-60.
On the basis, the fatty alcohol-polyoxyethylene ether sodium sulfate and water form a solution, and the ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the water is 1: 50.
On the basis, the flocculating agent adopts an inorganic flocculating agent and a microbial flocculating agent, and the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
On the basis, the inorganic flocculant adopts one of polymeric ferric sulfate or polymeric aluminum chloride.
On the basis, the auxiliary agent comprises a pH value regulator and an oxidant; the ratio of the pH value regulator to the oxidant is 1:2, the pH value regulator adopts sodium hydroxide, and the oxidant adopts sodium hypochlorite.
On the basis, the high polymer material comprises polyhydroxyalkanoate and polylactic acid, and the ratio of the polyhydroxyalkanoate to the polylactic acid is 1: 1.
On the basis, the preparation method of the degradable bactericide for the sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1: 55-60, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1: 0.05-0.1, stirring for 1-2 h, and standing for 30-40 min;
step two: heating chlorine dioxide gas to 10-15 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5-1 h
Step three: adding potassium peroxymonosulfate powder, stirring for 0.5-1 h, and standing for 10-20 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15-20 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 10-20 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Compared with the prior art, the invention has the beneficial effects that:
(1) the polyacrylamide can be used as an anionic surfactant and a flocculating agent and is used in cooperation with an inorganic flocculating agent, and the polyacrylamide is used as one of the components of the bactericide.
(2) The degradable bactericide for sewage, which is disclosed by the invention, is prepared from the nonionic surfactant sodium fatty alcohol ether sulfate and can also be used as a defoaming agent.
(3) The degradable bactericide for sewage, provided by the invention, can be used as an oxidant or a bleaching agent by adding sodium hypochlorite.
(4) The biodegradable bactericide for sewage is added with biodegradable high polymer materials, polyhydroxy fatty acid ester and polylactic acid, wherein the polyhydroxy fatty acid ester is used as intracellular polyester, and the polylactic acid is prepared from lactic acid as a raw material, and when the polyhydroxy fatty acid ester and the polylactic acid are matched in a ratio of 1:1, the biodegradable bactericide has biodegradability and compatibility, has a good degradation effect on chemical reagents in a sewage treatment process, reduces pollution of chemical components, and is beneficial to environmental protection.
Detailed Description
The present invention will be described in further detail with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention discloses a degradable bactericide for sewage, which is prepared from the following components in percentage by weight,
as a preferred embodiment of the present invention, in this embodiment, the surfactant includes a mixture of polyacrylamide and sodium fatty alcohol polyoxyethylene ether sulfate, and a mixing ratio of the polyacrylamide to the sodium fatty alcohol polyoxyethylene ether sulfate is 1: 0.05-0.1.
In the present example, the polyacrylamide and water form a solution, and the ratio of the polyacrylamide to water is 1: 55-60.
As a preferred embodiment of the present invention, in this example, the sodium fatty alcohol polyoxyethylene ether sulfate and water form a solution, and the ratio of the sodium fatty alcohol polyoxyethylene ether sulfate to the water is 1: 50.
In the present embodiment, the inorganic flocculant and the microbial flocculant are used as the flocculant, and the ratio of the inorganic flocculant to the microbial flocculant is 1: 1.
In this embodiment, one of polymeric ferric sulfate and polymeric aluminum chloride is used as the inorganic flocculant.
As a preferred embodiment of the present invention, in this embodiment, the auxiliary agent includes a pH adjuster and an oxidizing agent; the ratio of the pH value regulator to the oxidant is 1:2, the pH value regulator adopts sodium hydroxide, and the oxidant adopts sodium hypochlorite.
In this embodiment, the polymer material includes polyhydroxyalkanoate and polylactic acid, and the ratio of the polyhydroxyalkanoate to the polylactic acid is 1: 1.
In this embodiment, a method for preparing a degradable bactericide for sewage includes the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1: 55-60, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1: 0.05-0.1, stirring for 1-2 h, and standing for 30-40 min;
step two: heating chlorine dioxide gas to 10-15 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5-1 h
Step three: adding potassium peroxymonosulfate powder, stirring for 0.5-1 h, and standing for 10-20 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15-20 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 10-20 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
In the technical scheme, an anionic surfactant and a nonionic surfactant are compounded to form a mixed surfactant, the nonionic surfactant, namely, the fatty alcohol-polyoxyethylene ether sodium sulfate can also be used as an antifoaming agent, heated liquefied chlorine dioxide is added to liquefy the liquefied chlorine dioxide to serve as a disinfectant, potassium hydrogen peroxymonosulfate powder is a good disinfectant, sodium dichloroisocyanurate solution is added to achieve the purpose of killing, sodium hydroxide can soften the water quality of sewage and serves as a pH value regulator, an oxidant, namely sodium hypochlorite can also serve as a bleaching agent, high-molecular compounds, namely polyhydroxyalkanoate and polylactic acid, are beneficial to biodegradation, a flocculating agent is added, a microbial flocculating agent and an inorganic flocculating agent are used for condensing impurities in the sewage into flocculent precipitates, and polyacrylamide can also be used as a flocculating agent to facilitate separation.
Example 1
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
3% of surfactant, 2% of potassium peroxymonosulfate, 1% of sodium dichloroisocyanurate, 0.5% of chlorine dioxide, 10% of sodium hypochlorite, 7% of flocculating agent, 4% of high polymer material, 1% of auxiliary agent and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1:55, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1:0.05, stirring for 1h, and standing for 30 minutes;
step two: heating chlorine dioxide gas to 10 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5-1 h
Step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 0.5h, and standing for 10 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 10 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Example 2
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
4.5% of a surfactant; 2.5 percent of potassium peroxymonosulfate, 1.5 percent of sodium dichloroisocyanurate, 0.75 percent of chlorine dioxide, 12.5 percent of sodium hypochlorite, 7.5 percent of flocculating agent, 4.5 percent of high polymer material, 1.5 percent of auxiliary agent and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1:57.5, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1:0.075, stirring for 1.5h, and standing for 35 minutes;
step two: heating chlorine dioxide gas to 12.5 deg.C for liquefaction, adding into the above mixed solution, and stirring for 0.75 hr
Step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 0.75h, and standing for 15 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 17.5 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 15 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Example 3
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
4% of surfactant, 2.5% of potassium peroxymonosulfate, 2% of sodium dichloroisocyanurate, 0.5% of chlorine dioxide, 12% of sodium hypochlorite, 8% of flocculant, 4.5% of high polymer material, 1.8% of assistant and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1:55, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1:0.05, stirring for 1.5h, and standing for 30 minutes;
step two: heating chlorine dioxide gas to 11 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5 h;
step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 1h, and standing for 15 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 15 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Example 4
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
6% of surfactant, 3% of potassium peroxymonosulfate, 2% of sodium dichloroisocyanurate, 1% of chlorine dioxide, 15% of sodium hypochlorite, 8% of flocculating agent, 5% of high polymer material, 2% of auxiliary agent and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1:60, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1:0.1, stirring for 2 hours, and standing for 40 minutes;
step two: heating chlorine dioxide gas to 15 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 1 h;
step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 1h, and standing for 120 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 20 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 20 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Comparative example 1
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
3% of surfactant, 2% of potassium peroxymonosulfate, 1% of sodium dichloroisocyanurate, 0.5% of chlorine dioxide, 10% of sodium hypochlorite, 7% of flocculating agent, 1% of auxiliary agent and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1:55, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1:0.05, stirring for 1h, and standing for 30 minutes;
step two: heating chlorine dioxide gas to 10 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5-1 h
Step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 0.5h, and standing for 10 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding a flocculating agent, adding an inorganic flocculating agent, standing for 10 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Comparative example 2
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
4% of surfactant, 2.5% of potassium peroxymonosulfate, 2% of sodium dichloroisocyanurate, 0.5% of chlorine dioxide, 12% of sodium hypochlorite, 8% of flocculant, 4.5% of high polymer material, 1.8% of assistant and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting sodium fatty alcohol-polyoxyethylene ether sulfate with water according to the proportion of 1:50,
step two: heating chlorine dioxide gas to 11 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5 h;
step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 1h, and standing for 15 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 15 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
Comparative example 3
A degradable bactericide for sewage is prepared from the following components (by weight percentage),
6% of surfactant, 3% of potassium peroxymonosulfate, 2% of sodium dichloroisocyanurate, 1% of chlorine dioxide, 5% of sodium hypochlorite, 8% of flocculating agent, 5% of high polymer material, 2% of auxiliary agent and the balance of water.
The preparation method of the degradable bactericide for sewage comprises the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1:60, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1:0.1, stirring for 2 hours, and standing for 40 minutes;
step two: heating chlorine dioxide gas to 15 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 1 h;
step three: adding potassium hydrogen peroxymonosulfate powder, stirring for 1h, and standing for 120 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 20 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 20 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
The first performance table is as follows:
the result of the biological degradation degree of the bactericide of the invention in 15 days is as follows:
as can be seen from the above table, after the polyacrylamide is added, the biodegradability is high, and the nonionic surfactant, namely the sodium alcohol ether sulfate, is used as a defoaming agent. The added sodium hypochlorite can be used as an oxidant or a bleaching agent, and the added biodegradable high polymer material, the polyhydroxyalkanoate and the polylactic acid have good promotion effect on biodegradation, thereby being beneficial to environmental protection.
Performance table two:
the killing rate of hepatitis virus, algae and bacteria by using the bactericide of the invention is as follows:
| numbering | Hepatitis virus killing rate% | Killing rate of algae | The killing rate of bacteria% |
| Example 1 | 97.3％ | 96.7％ | 98.6％ |
| Example 2 | 98.7％ | 98.2％ | 99.2％ |
| Example 3 | 99.6％ | 99.8％ | 99.9％ |
| Example 4 | 98.9％ | 99.2％ | 98.7％ |
| Comparative example 1 | 96.2％ | 95.7％ | 98.7％ |
| Comparative example 2 | 95.4％ | 94.3％ | 97.4％ |
| Comparative example 3 | 96.8％ | 96.3％ | 97.8％ |
As can be seen from the above table, the anionic surfactant polyacrylamide and the inorganic flocculant are used together to achieve a better sterilization effect, the microbial flocculant has a good sterilization effect on microorganisms, and the sterilization effect of the combined action of the bactericides such as potassium monopersulfate, sodium dichloroisocyanurate, chlorine dioxide, sodium hypochlorite and the like is good.
In the description of the present invention, it is to be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "front," "center," "two ends," and the like are used in the indicated orientations and positional relationships that are merely used to facilitate the description of the present invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed," "padded," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While the foregoing specification illustrates and describes the preferred embodiments of this invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A degradable bactericide for sewage is characterized in that: the degradable bactericide for sewage is prepared from the following components in percentage by weight,
2. the degradable bactericide for sewage according to claim 1, wherein: the surfactant comprises a mixture of polyacrylamide and fatty alcohol-polyoxyethylene ether sodium sulfate, and the mixing ratio of the polyacrylamide to the fatty alcohol-polyoxyethylene ether sodium sulfate is 1: 0.05-0.1.
3. The degradable bactericide for sewage according to claim 2, wherein: the polyacrylamide and water form a solution, and the ratio of the polyacrylamide to the water is 1: 55-60.
4. The degradable bactericide for sewage according to claim 2, wherein: the fatty alcohol-polyoxyethylene ether sodium sulfate and water form a solution, and the ratio of the fatty alcohol-polyoxyethylene ether sodium sulfate to the water is 1: 50.
5. The degradable bactericide for sewage according to claim 1, wherein: the flocculant adopts an inorganic flocculant and a microbial flocculant, and the ratio of the inorganic flocculant to the microbial flocculant is 1: 1.
6. The degradable bactericide for sewage according to claim 5, wherein: the inorganic flocculant is one of polymeric ferric sulfate or polymeric aluminum chloride.
7. The degradable bactericide for sewage according to claim 1, wherein: the auxiliary agent comprises a pH value regulator and an oxidant; the ratio of the pH value regulator to the oxidant is 1:2, the pH value regulator adopts sodium hydroxide, and the oxidant adopts sodium hypochlorite.
8. The degradable bactericide for sewage according to claim 1, wherein: the high polymer material comprises polyhydroxyalkanoate and polylactic acid, and the ratio of the polyhydroxyalkanoate to the polylactic acid is 1: 1.
9. A preparation method of a degradable bactericide for sewage is characterized by comprising the following steps:
the method comprises the following steps: diluting polyacrylamide and water according to the ratio of 1: 55-60, diluting fatty alcohol-polyoxyethylene ether sodium sulfate and water according to the ratio of 1:50, mixing the diluted polyacrylamide solution and the fatty alcohol-polyoxyethylene ether sodium sulfate solution according to the ratio of 1: 0.05-0.1, stirring for 1-2 hours, and standing for 30-40 minutes;
step two: heating chlorine dioxide gas to 10-15 ℃ for liquefaction, adding the liquefied chlorine dioxide gas into the mixed solution, and stirring for 0.5-1 h
Step three: adding potassium peroxymonosulfate powder, stirring for 0.5-1 h, and standing for 10-20 min;
step four: adding sodium dichloroisocyanurate solution into the solution, stirring for 30 minutes, and standing for 15 minutes;
step five: adding a pH value regulator and an oxidant according to the ratio of 1:2, firstly adding sodium hydroxide as the pH value regulator, standing for 15-20 minutes, and then adding sodium hypochlorite as the oxidant;
step six: adding the following components in percentage by weight of 1:1, sequentially adding polyhydroxyalkanoate and polylactic acid;
step seven: adding a flocculating agent, adding an inorganic flocculating agent, standing for 10-20 minutes, and then adding a microbial flocculating agent, wherein the ratio of the inorganic flocculating agent to the microbial flocculating agent is 1: 1.
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