CN114835226A - Sewage treatment precipitator - Google Patents
Sewage treatment precipitator Download PDFInfo
- Publication number
- CN114835226A CN114835226A CN202210776553.0A CN202210776553A CN114835226A CN 114835226 A CN114835226 A CN 114835226A CN 202210776553 A CN202210776553 A CN 202210776553A CN 114835226 A CN114835226 A CN 114835226A
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- CN
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- Prior art keywords
- sewage treatment
- precipitator
- precipitant
- sewage
- phosphate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to the field of environmental protection, and particularly relates to a sewage treatment precipitator. The sewage treatment precipitator comprises: phosphate precipitants, organic polymers, monohydric alcohols, alkaline earth metal ions and stabilizers; the phosphate precipitation agent comprises at least one of polymers of Fe (II) -X, Al-X or both; wherein X is independently selected from oxygen, halogen, sulfate, or nitrate; the content of the monohydric alcohol is 3-24% by taking the total weight of the sewage treatment precipitator as 100%. The sewage treatment precipitator provided by the invention has the advantages of high flocculation precipitation speed, good adsorption and bridging performances on suspended matters and dissolved matters in a water body, good comprehensive flocculation precipitation effect, capability of treating more sewage with less dosage, contribution to saving economic cost and wide application range.
Description
Technical Field
The invention relates to the field of environmental protection, and particularly relates to a sewage treatment precipitator.
Background
The sewage generated in the human life process is one of the main pollution sources of the water body. The domestic sewage contains a large amount of organic matters, such as cellulose, starch, saccharides, fat protein and the like; it also contains pathogenic bacteria, viruses, and parasite eggs, and inorganic salts. The industrial wastewater comprises production wastewater, production sewage and cooling water, and refers to wastewater and waste liquid generated in the industrial production process, wherein the wastewater and the waste liquid contain industrial production materials, intermediate products, byproducts and pollutants generated in the production process, which are lost along with water. The industrial wastewater has various types and complex components.
At present, a coagulant is generally used for sewage treatment. The coagulant generally includes inorganic coagulants such as aluminum sulfate, polyaluminium chloride and polyferric sulfate, and organic polymeric flocculants such as polyacrylamide. Because inorganic coagulants and organic polymeric flocculants have both advantages and disadvantages, inorganic coagulants and organic polymeric flocculants are usually compounded for use in the actual use process.
In the prior art, 201210545556.X discloses an iron salt-polyepichlorohydrin-dimethylamine composite flocculant as well as a preparation method and application thereof, wherein the composite flocculant consists of an iron chloride solution or a polymeric iron chloride solution and polyepichlorohydrin-dimethylamine, but the composite flocculant still has the defects of poor flocculation effect and low sedimentation speed. 200710024361.X discloses a polymeric ferric sulfate-poly dimethyl diallyl ammonium chloride composite coagulant and a preparation and application method thereof, wherein the composite coagulant is composed of polymeric ferric sulfate and poly dimethyl diallyl ammonium chloride, and has poor performance in removing soluble pollutants and bacteria.
Disclosure of Invention
In view of the above, the present invention provides a sewage treatment precipitant, comprising:
phosphate precipitants, organic polymers, monohydric alcohols, alkaline earth metal ions and stabilizers;
the phosphate precipitation agent comprises at least one of polymers of Fe (II) -X, Al-X or both; wherein X is independently selected from oxygen, halogen, sulfate, or nitrate;
the content of the monohydric alcohol is 3-24% by taking the total weight of the sewage treatment precipitator as 100%.
The sewage treatment precipitator provided by the invention can effectively treat suspended matters and dissolved matters in industrial sewage and domestic sewage, and has a good flocculation precipitation effect. In the using process, the sewage treatment device can be put into sewage to be treated at one time, the treatment process is simple and quick, and the application range is wide.
As a preferred embodiment of the present invention, the monohydric alcohol comprises: at least one of methanol, ethanol, propanol or butanol.
In a preferred embodiment of the present invention, the content of the phosphate precipitant is 4-36% by weight based on 100% by weight of the total sewage treatment precipitant.
The flocculation speed can be further improved under the dosage, and the sedimentation effect is further improved.
As a preferred embodiment of the present invention, the organic polymer comprises: at least one of cationic starch, epichlorohydrin-dimethylamine copolymer, poly (diallyldimethylammonium chloride), or polyamine.
The organic polymer, monohydric alcohol and phosphate precipitant act synergistically to achieve better precipitation effect on suspended matters and dissolved matters in sewage.
In a preferred embodiment of the present invention, the weight ratio of the phosphate precipitant to the organic polymer is 0.22 to 18: 1.
as a preferred embodiment of the present invention, the alkaline earth metal ion is Ca 2+ And/or Mg 2+ The alkaline earth metal ions are present in dissolved form.
Ca 2+ 、Mg 2+ Presence of (2)Can effectively reduce the negative charge on the surface of the colloid, promote the formation of bridges and further improve the flocculation effect.
In a preferred embodiment of the present invention, the weight ratio of the solution of the alkaline earth metal ions to the organic polymer is 0.01 to 3: 1.
as a preferred embodiment of the present invention, the stabilizer is at least one of a citric acid solution or an ascorbic acid solution.
In a preferred embodiment of the present invention, the content of the stabilizer is 0.1 to 1% based on 100% by weight of the total amount of the sewage treatment precipitant.
By compounding with the stabilizer, the stability of the sewage treatment precipitator in sewage can be promoted, and the efficient exertion of the flocculation precipitation effect is facilitated.
As a preferred embodiment of the invention, the sewage treatment precipitator comprises the following components in parts by weight:
Al 2 O 3 0.03-0.24 part of polymer and FeCl 2 0.0115-0.115 parts, 0.02-0.18 parts of epoxy chloropropane-dimethylamine copolymer, 0.03-0.24 parts of ethanol and MgCl 2 0.002-0.06 part, and 0.001-0.01 part of saturated ascorbic acid solution.
The sewage treatment precipitator in any embodiment can be applied to industrial sewage and domestic sewage treatment to efficiently precipitate suspended matters and dissolved matters in industrial sewage and domestic sewage.
The person skilled in the art can further combine the above preferred embodiments to obtain other preferred embodiments of the sewage treatment precipitating agent of the present invention.
Compared with the prior art, the invention has the beneficial effects that:
the sewage treatment precipitator provided by the invention has the advantages of high flocculation precipitation speed, good adsorption and bridging performances on suspended matters and dissolved matters in a water body, good comprehensive flocculation precipitation effect, capability of treating more sewage with less dosage, contribution to saving economic cost and wide application range.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The specific techniques or conditions not indicated in the examples are all conventional methods or techniques or conditions described in the literature of the field or according to the product specifications. The reagents and instruments used are conventional products which are available from normal commercial vendors, not indicated by manufacturers.
Example 1
The embodiment provides a sewage treatment precipitator, which comprises the following components in parts by weight:
40% of 30% of Al 2 O 3 Polymer solution, 20% FeCl with mass fraction of 23% 2 15 percent of epichlorohydrin-dimethylamine copolymer solution with the mass fraction of 60 percent, 5 percent of MgCl with the mass fraction of 40 percent 2 The solution comprises 10 percent of ethanol solution with the mass fraction of 80 percent and 0.5 percent of saturated ascorbic acid solution.
Example 2
The embodiment provides a sewage treatment precipitator, which comprises the following components in parts by weight:
60% of 20% of Al by mass 2 O 3 Polymer solution, 30% FeCl with mass fraction of 23% 2 Solution, 20% of epichlorohydrin-dimethylamine copolymer solution with the mass fraction of 50%, 10% of MgCl with the mass fraction of 30% 2 The solution comprises 20 percent of ethanol solution with the mass fraction of 70 percent and 0.8 percent of saturated ascorbic acid solution.
Example 3
The embodiment provides a sewage treatment precipitator, which comprises the following components in parts by weight:
80% of Al with the mass fraction of 15% 2 O 3 Polymer solution, 50% FeCl with mass fraction of 23% 2 30 percent of epichlorohydrin-dimethylamine copolymer solution with the mass fraction of 40 percent, 15 percent of MgCl with the mass fraction of 20 percent 2 The solution comprises 30 percent of ethanol solution with the mass fraction of 60 percent and 1 percent of saturated ascorbic acid solution.
Comparative example 1
The comparative example provides a sewage treatment precipitator, which only differs from the example 1 in the following specific components: no monohydric alcohol solution was added.
Comparative example 2
The comparative example provides a sewage treatment precipitator, which only differs from the example 1 in the following specific components: no alkaline earth ion solution was added.
Test examples
The precipitation effect and the pollutant removal effect of the sewage treatment precipitant of the examples and the comparative examples were evaluated by tests.
The specific test method comprises the following steps: the sewage treatment precipitator prepared in the embodiment of the invention is used in a muddy water mixture at the water outlet of an aerobic pool of a sewage treatment plant, and compared with a comparative example and a blank group, a standardized sedimentation test is carried out by using a 1000mL measuring cylinder, and the sedimentation speed of sludge and the bacterial number of supernatant after sedimentation are tested (a water sample is applied to a general nutrient medium, cultured for 24 hours at 25 +/-1 ℃ and then counted).
The test results are shown in table 1, table 2 and table 3.
TABLE 1 sludge settling effect of treating sludge-water mixture in aerobic tank of sewage treatment plant with precipitant (20 mg/L)
TABLE 2 sludge settling rate (20 mg/L) of sludge mixture in aerobic tank of sewage treatment plant with precipitant for sewage treatment
TABLE 3 effect of the precipitant for treating sewage on the sludge-water mixture in aerobic tank of sewage treatment plant (20 mg/L)
The treatment results show that compared with the blank group and the comparison group, the sewage treatment precipitator of the invention can rapidly improve the rapid sedimentation of the activated sludge in the effluent sludge-water mixed liquor of the aerobic tank of the sewage treatment plant, the sedimentation speed reaches 2.24-2.25m/h, which is 2 times of that of the blank group, and meanwhile, the bacterial load in the supernatant is reduced by 83.77-84.25%, thus improving the effluent quality.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A sewage treatment precipitant, comprising:
phosphate precipitants, organic polymers, monohydric alcohols, alkaline earth metal ions and stabilizers;
the phosphate precipitation agent comprises at least one of polymers of Fe (II) -X, Al-X or both; wherein X is independently selected from oxygen, halogen, sulfate, or nitrate;
the content of the monohydric alcohol is 3-24% by taking the total weight of the sewage treatment precipitator as 100%.
2. The sewage treatment precipitating agent of claim 1, wherein the monohydric alcohol comprises: at least one of methanol, ethanol, propanol or butanol.
3. The sewage treatment precipitator according to claim 1 or 2, wherein the content of the phosphate precipitator is 4-36% based on 100% of the total weight of the sewage treatment precipitator.
4. The sewage treatment precipitating agent of claim 1, wherein the organic polymer comprises: at least one of cationic starch, epichlorohydrin-dimethylamine copolymer, poly (diallyldimethylammonium chloride), or polyamine.
5. The sewage treatment precipitant according to claim 1, wherein the weight ratio of the phosphate precipitant to the organic polymer is 0.22-18: 1.
6. the sewage treatment precipitant of claim 1, wherein the alkaline earth metal ion is Ca 2+ And/or Mg 2+ The alkaline earth metal ions are present in dissolved form.
7. The sewage treatment precipitating agent of claim 1, wherein the stabilizing agent is at least one of a citric acid solution or an ascorbic acid solution.
8. The sewage treatment precipitator according to claim 7, wherein the content of the stabilizer is 0.1-1% by weight based on 100% by weight of the sewage treatment precipitator.
9. The sewage treatment precipitant according to claim 1, comprising the following components in parts by weight:
Al 2 O 3 0.03-0.24 part of polymer and FeCl 2 0.0115-0.115 parts, 0.02-0.18 parts of epoxy chloropropane-dimethylamine copolymer, 0.03-0.24 parts of ethanol and MgCl 2 0.002-0.06 part, and 0.001-0.01 part of saturated ascorbic acid solution.
10. The use of the sewage treatment precipitant according to any one of claims 1 to 9 in the treatment of industrial wastewater and domestic sewage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210776553.0A CN114835226A (en) | 2022-07-04 | 2022-07-04 | Sewage treatment precipitator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210776553.0A CN114835226A (en) | 2022-07-04 | 2022-07-04 | Sewage treatment precipitator |
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| Publication Number | Publication Date |
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| CN114835226A true CN114835226A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210776553.0A Pending CN114835226A (en) | 2022-07-04 | 2022-07-04 | Sewage treatment precipitator |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5335254A (en) * | 1976-09-14 | 1978-04-01 | Toa Gosei Chem Ind | Waste water treating method |
| US20090211982A1 (en) * | 2008-02-22 | 2009-08-27 | Water Solutions, Inc. | Process for treating effluent liquid fraction from post anaerobic digestion |
| CN106430697A (en) * | 2016-08-03 | 2017-02-22 | 吴小慧 | Method for treating tin-plating sewage |
| CN108046382A (en) * | 2017-12-27 | 2018-05-18 | 重庆工程职业技术学院 | For the composite treating agent of oil gas field wastewater treatment |
| CN110127827A (en) * | 2019-05-30 | 2019-08-16 | 田其珍 | A kind of preparation method of antibacterial high adsorption flocculant |
| CN112694185A (en) * | 2019-10-21 | 2021-04-23 | 中国石油化工股份有限公司 | Method for reducing heavy metal and/or phosphorus element content and COD value in sewage and application thereof |
| CN112939170A (en) * | 2021-02-02 | 2021-06-11 | 淄博正河净水剂有限公司 | Industrial wastewater flocculant and preparation method thereof |
-
2022
- 2022-07-04 CN CN202210776553.0A patent/CN114835226A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5335254A (en) * | 1976-09-14 | 1978-04-01 | Toa Gosei Chem Ind | Waste water treating method |
| US20090211982A1 (en) * | 2008-02-22 | 2009-08-27 | Water Solutions, Inc. | Process for treating effluent liquid fraction from post anaerobic digestion |
| CN106430697A (en) * | 2016-08-03 | 2017-02-22 | 吴小慧 | Method for treating tin-plating sewage |
| CN108046382A (en) * | 2017-12-27 | 2018-05-18 | 重庆工程职业技术学院 | For the composite treating agent of oil gas field wastewater treatment |
| CN110127827A (en) * | 2019-05-30 | 2019-08-16 | 田其珍 | A kind of preparation method of antibacterial high adsorption flocculant |
| CN112694185A (en) * | 2019-10-21 | 2021-04-23 | 中国石油化工股份有限公司 | Method for reducing heavy metal and/or phosphorus element content and COD value in sewage and application thereof |
| CN112939170A (en) * | 2021-02-02 | 2021-06-11 | 淄博正河净水剂有限公司 | Industrial wastewater flocculant and preparation method thereof |
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