CN112279347A - Efficient domestic sewage treatment agent and preparation method and application thereof - Google Patents
Efficient domestic sewage treatment agent and preparation method and application thereof Download PDFInfo
- Publication number
- CN112279347A CN112279347A CN202010936112.3A CN202010936112A CN112279347A CN 112279347 A CN112279347 A CN 112279347A CN 202010936112 A CN202010936112 A CN 202010936112A CN 112279347 A CN112279347 A CN 112279347A
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- China
- Prior art keywords
- domestic sewage
- treatment agent
- sewage treatment
- efficient domestic
- efficient
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- 239000010865 sewage Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 229920001661 Chitosan Polymers 0.000 claims abstract description 26
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims abstract description 24
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 24
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 22
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 22
- 239000000661 sodium alginate Substances 0.000 claims abstract description 22
- 239000007864 aqueous solution Substances 0.000 claims abstract description 10
- 239000000701 coagulant Substances 0.000 claims abstract description 10
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 235000019738 Limestone Nutrition 0.000 claims description 2
- 150000002505 iron Chemical class 0.000 claims description 2
- 239000006028 limestone Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 15
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 8
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 229920002401 polyacrylamide Polymers 0.000 description 4
- 241000282414 Homo sapiens Species 0.000 description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 208000024827 Alzheimer disease Diseases 0.000 description 1
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 206010039966 Senile dementia Diseases 0.000 description 1
- 206010043275 Teratogenicity Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- -1 aluminum ions Chemical class 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007886 mutagenicity Effects 0.000 description 1
- 231100000299 mutagenicity Toxicity 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 231100000211 teratogenicity Toxicity 0.000 description 1
Classifications
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
Abstract
The invention discloses a high-efficiency domestic sewage treatment agent, which comprises carboxymethyl chitosan quaternary ammonium salt, an inorganic salt coagulant and sodium alginate, and is simple in preparation method, namely the carboxymethyl chitosan quaternary ammonium salt, the inorganic salt coagulant and the sodium alginate are weighed according to the proportion and then added into an aqueous solution, and the mixture is stirred and dissolved to obtain the high-efficiency domestic sewage treatment agent.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a domestic sewage high-efficiency water treatment agent, and a preparation method and application thereof.
Background
After the nineties of the twentieth century, the sewage treatment industry in China enters a rapid development period, and the speed increase of the sewage treatment demand is far higher than the global level. The daily discharge of domestic sewage in cities is 150-400L, the components of the domestic sewage are more and more diversified and complicated, and the pollution degree to the surrounding environment and water resources is gradually increased. The sewage treatment is one of the important ways for protecting water resources, and coagulation and precipitation in the sewage treatment are one of the cheapest and most extensive treatment technologies at present.
At present, the main flocculants in the market are inorganic flocculants such as polyaluminium chloride (PAC) and the like, the price is low, but the secondary pollution to the health of human beings and the ecological environment is also caused, the secondary pollution can be caused by the high residue of aluminum ions in water, and especially, senile dementia, aluminum osteopathia, anemia and the like can be induced when the flocculant enters the human body; the other is an organic flocculant, such as Polyacrylamide (PAM) and the like, which has the advantages of high flocculation efficiency and low dosage, but the residue thereof has the serious problems of 'triple effect' (teratogenicity, carcinogenesis and mutagenicity). Therefore, in order to scientifically and effectively control and treat the generation and discharge of domestic sewage, a deeper research on the sewage treatment technology is needed, and the pollution problem of domestic sewage is solved.
Disclosure of Invention
Aiming at the technical problems, the efficient domestic sewage treatment agent is provided, various pollutant components in the domestic sewage can be efficiently removed, the quality of treated water has no secondary pollution, the safety of domestic water is improved, and the human health is ensured.
In order to achieve the purpose, the invention provides the following technical scheme: an efficient water treating agent for domestic sewage is prepared from carboxymethyl chitosan quaternary ammonium salt, inorganic salt coagulant and sodium alginate.
Further, the inorganic salt coagulant is polymeric iron salt.
Furthermore, the mass ratio of the carboxymethyl chitosan quaternary ammonium salt to the inorganic salt coagulant is 1: 1-1: 8.
Furthermore, the addition amount of the sodium alginate accounts for 0.5-2% of the total mass.
Further, the preparation method of the domestic sewage high-efficiency water treatment agent comprises the following steps: weighing the carboxymethyl chitosan quaternary ammonium salt, the inorganic salt coagulant and the sodium alginate according to the proportion, adding the weighed materials into the aqueous solution, and stirring the materials until the materials are fully dissolved.
Further, the pH range of the domestic sewage high-efficiency water treatment agent is 5-8.
Furthermore, the high-efficiency domestic sewage treatment agent is matched with a pH regulator, and the pH regulator is limestone or hydrochloric acid.
Furthermore, the temperature range of the domestic sewage high-efficiency water treatment agent is 25-40 ℃.
Furthermore, the high-efficiency water treatment agent is used for domestic sewage treatment.
The invention has the beneficial effects that:
(1) the carboxymethyl chitosan quaternary ammonium salt is a chitosan derivative, has the properties of amphoteric polyelectrolyte, more active groups, better water solubility and high charge density, can perform the functions of electrical neutralization and adsorption bridging to adsorb colloidal particles in domestic sewage, and obviously improves the flocculation capability of the chitosan derivative.
(2) The high-efficiency water treatment agent is a composite flocculant, and the carboxymethyl chitosan quaternary ammonium salt and the polymeric ferric salt have synergistic effect, so that the flocculation effect is more remarkable, and the removal rate of COD and sewage turbidity is higher.
(3) The high-efficiency water treatment agent disclosed by the invention is safe, mild and nontoxic, and cannot cause secondary pollution to the environment.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the implementation examples of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
Example 1
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polymeric ferric sulfate and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 10g of polymeric ferric sulfate and 0.6g of sodium alginate are sequentially added into the aqueous solution, and the mixture is stirred while being added until the mixture is fully dissolved.
Example 2
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polymeric ferric sulfate and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 15g of polymeric ferric sulfate and 0.6g of sodium alginate are added into the aqueous solution in turn, and the mixture is stirred while being added until the mixture is fully dissolved.
Example 3
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polymeric ferric sulfate and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 4g of polymeric ferric sulfate and 0.12g of sodium alginate are added into the aqueous solution in turn, and the mixture is stirred while being added until the mixture is fully dissolved.
Example 4
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polymeric ferric sulfate and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 15g of polymeric ferric sulfate and 0.6g of sodium alginate are added into the aqueous solution in turn, and the mixture is stirred while being added until the mixture is fully dissolved.
Example 5
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polyferric chloride and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 10g of polymeric ferric chloride and 0.3g of sodium alginate are added into the aqueous solution in turn, and the mixture is stirred while being added until the mixture is fully dissolved.
Example 6
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polyferric chloride and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 10g of polymeric ferric chloride and 0.3g of sodium alginate are added into the aqueous solution in turn, and the mixture is stirred while being added until the mixture is fully dissolved.
Example 7
A high-efficiency water treatment agent for domestic sewage comprises carboxymethyl chitosan quaternary ammonium salt, polyferric chloride and sodium alginate.
The preparation method comprises the following steps: 2g of carboxymethyl chitosan quaternary ammonium salt, 6g of polymeric ferric chloride and 0.4g of sodium alginate are added into the aqueous solution in turn, and the mixture is stirred while being added until the mixture is fully dissolved.
Comparative example 1
Cationic polyacrylamide flocculant (molecular weight 1200 ten thousand), technical grade.
The high-efficiency domestic sewage treatment agents prepared in examples 1 to 7 and the comparative example 1 are respectively used for treating domestic sewage, and the specific method comprises the following steps:
adjusting pH of domestic sewage to 6.5 with pH regulator, controlling temperature of sewage system to 30 deg.C, adding 7g/L of the above prepared water treatment agent, and stirring to disperse the treatment agent. Turbidity removal and COD removal were measured separately and the results were as follows:
the high-efficiency domestic sewage treatment agent provided by the invention has obvious capability of removing the pollutants in the domestic sewage, examples 1, 5 and 6 show very high capability of removing the pollutants, the turbidity removal rates are all over 90 percent and are stronger than that of polyacrylamide cations, and the COD removal rate in the sewage is also over 90 percent and is as high as about 95 percent.
In the description herein, the particular features, structures, materials, or characteristics disclosed may be combined in any suitable manner in any one or more embodiments or examples. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, all of which are within the scope of the invention.
Claims (9)
1. The efficient domestic sewage treating agent is characterized by comprising the following components in parts by weight: comprises carboxymethyl chitosan quaternary ammonium salt, inorganic salt coagulant and sodium alginate.
2. The efficient water treatment agent for domestic sewage according to claim 1, wherein said inorganic salt coagulant is polymeric iron salt.
3. The efficient domestic sewage treatment agent according to claim 1, wherein the mass ratio of the carboxymethyl chitosan quaternary ammonium salt to the inorganic salt coagulant is 1: 1-1: 8.
4. The efficient domestic sewage treatment agent according to claim 1, wherein the addition amount of sodium alginate is 0.5-2% of the total mass.
5. The efficient domestic sewage treatment agent according to any one of claims 1 to 4, wherein the efficient domestic sewage treatment agent is prepared by a method comprising: weighing the carboxymethyl chitosan quaternary ammonium salt, the inorganic salt coagulant and the sodium alginate according to the proportion, adding the weighed materials into the aqueous solution, and stirring the materials until the materials are fully dissolved.
6. The efficient domestic sewage treatment agent according to claim 5, wherein said efficient domestic sewage treatment agent is used at a pH in the range of 5 to 8.
7. The efficient domestic sewage treatment agent according to claim 6, wherein said efficient domestic sewage treatment agent is used in combination with a pH regulator, wherein said pH regulator is limestone or hydrochloric acid.
8. The efficient domestic sewage treatment agent according to claim 5, wherein said efficient domestic sewage treatment agent is used at a temperature ranging from 25 ℃ to 40 ℃.
9. The high-efficiency water treatment agent as claimed in any one of claims 1 to 4 and 6 to 8, which is used for domestic sewage treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936112.3A CN112279347A (en) | 2020-09-08 | 2020-09-08 | Efficient domestic sewage treatment agent and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936112.3A CN112279347A (en) | 2020-09-08 | 2020-09-08 | Efficient domestic sewage treatment agent and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112279347A true CN112279347A (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010936112.3A Pending CN112279347A (en) | 2020-09-08 | 2020-09-08 | Efficient domestic sewage treatment agent and preparation method and application thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112279347A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838040A (en) * | 2010-04-13 | 2010-09-22 | 国家海洋局天津海水淡化与综合利用研究所 | Method for purifying seawater by taking carboxymethyl chitosan as flocculant |
| CN108017127A (en) * | 2017-11-14 | 2018-05-11 | 青岛卓森纳生物工程有限公司 | A kind of nano-high molecule carboxymethyl chitosan sewage treatment drug and processing method |
| CN110105462A (en) * | 2019-06-02 | 2019-08-09 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of preparation method of modification of chitosan flocculant and products thereof and application |
-
2020
- 2020-09-08 CN CN202010936112.3A patent/CN112279347A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838040A (en) * | 2010-04-13 | 2010-09-22 | 国家海洋局天津海水淡化与综合利用研究所 | Method for purifying seawater by taking carboxymethyl chitosan as flocculant |
| CN108017127A (en) * | 2017-11-14 | 2018-05-11 | 青岛卓森纳生物工程有限公司 | A kind of nano-high molecule carboxymethyl chitosan sewage treatment drug and processing method |
| CN110105462A (en) * | 2019-06-02 | 2019-08-09 | 上海纳米技术及应用国家工程研究中心有限公司 | A kind of preparation method of modification of chitosan flocculant and products thereof and application |
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Application publication date: 20210129 |