CN117985825A - Preparation method and application of coking wastewater flocculant - Google Patents
Preparation method and application of coking wastewater flocculant Download PDFInfo
- Publication number
- CN117985825A CN117985825A CN202410167759.2A CN202410167759A CN117985825A CN 117985825 A CN117985825 A CN 117985825A CN 202410167759 A CN202410167759 A CN 202410167759A CN 117985825 A CN117985825 A CN 117985825A
- Authority
- CN
- China
- Prior art keywords
- coking wastewater
- flocculant
- mixed solution
- added
- coking
- Prior art date
- 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.)
- Pending
Links
- 238000004939 coking Methods 0.000 title claims abstract description 80
- 239000002351 wastewater Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000005189 flocculation Methods 0.000 claims abstract description 29
- 230000016615 flocculation Effects 0.000 claims abstract description 29
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims abstract description 11
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 10
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims abstract description 8
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 239000011259 mixed solution Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000006228 supernatant Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 230000002431 foraging effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 5
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000693 micelle Substances 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- -1 polycyclic aromatic compounds Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
Landscapes
- 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 provides a preparation method and application of a coking wastewater flocculant, and belongs to the technical field of coking wastewater treatment, wherein the preparation method is to prepare the coking wastewater flocculant by taking aluminum chloride and ferric chloride as inorganic metal salts and APTES as a silicon source and coexisting ionic bonds and covalent bonds; the coking wastewater flocculant is matched with a micro vortex flocculation reactor to effectively remove COD, thiocyanate radical, chromaticity, turbidity and other components in the coking wastewater.
Description
Technical Field
The invention relates to the technical field of coking wastewater treatment, in particular to a preparation method and application of a coking wastewater flocculant.
Background
The coking wastewater is wastewater generated in the coal coking process, and pollutants contained in the coking wastewater comprise phenols, polycyclic aromatic compounds, heterocyclic compounds containing nitrogen, oxygen and sulfur and the like, and the coking wastewater is typical industrial wastewater with complex components, high toxicity and difficult degradation. The flocculation precipitation method is an important link of coking wastewater treatment, and generally adopts simple inorganic or organic flocculating agents such as polyaluminium chloride, polyaluminium sulfate, polyaluminium ferric chloride, polyacrylamide and the like, but the existing flocculating agents are not ideal for the treatment of the coking wastewater, and can not well meet various requirements of denitrification, carbon reduction, chromaticity reduction, turbidity and the like of the coking wastewater. It is therefore necessary to develop a novel flocculant for coking wastewater.
Disclosure of Invention
Aiming at the problems, the invention provides a preparation method and application of a coking wastewater flocculant.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
A method for preparing a coking wastewater flocculant, comprising the following steps:
S1, taking a molar ratio of 3: adding 1.8-2.2 of aluminum chloride and ferric chloride into absolute ethyl alcohol, and uniformly mixing to obtain a mixed solution A;
Mixing absolute ethyl alcohol, water and hydrochloric acid uniformly, and then adding APTES to obtain a mixed solution B;
s2, slowly dropwise adding the mixed solution A into the mixed solution B, continuously reacting after the dropwise adding, adding sodium hydroxide for alkalization, and continuously reacting the obtained system to obtain uniform sol;
s3, taking sol for aging until the sol becomes xerogel, then continuously drying the xerogel, and crushing to obtain the coking wastewater flocculant.
Further, in step S1, the molar ratio of silicon in the added APTES to aluminum in the mixed solution a is 1:0.05 to 0.06 (i.e. the molar ratio of Si/Al is 1:0.05 to 0.06).
Further, in step S2, sodium hydroxide is added until the pH value of the obtained system is 9.0-10.0.
Further, in step S2, the mixed solution B is added dropwise with vigorous stirring.
In the step S2, after the mixed solution B is added dropwise, the reaction time is 30-40 min;
adding sodium hydroxide to alkalize, and continuing the reaction of the obtained system for more than 60 minutes.
Further, in step S2, after the completion of the dropwise addition of the mixed solution B, the reaction temperature is room temperature (generally, room temperature means 15 to 40 ℃);
Adding sodium hydroxide to alkalize, and then, keeping the temperature of the obtained system at room temperature (generally, the room temperature is 15-40 ℃);
In step S3, the temperature of aging and drying are both room temperature (generally, room temperature means 15 to 40 ℃).
The application of the coking wastewater flocculant is that the coking wastewater flocculant prepared by the preparation method is matched with a micro vortex flocculation reactor to treat coking wastewater.
Further, the specific process of the application is that the coking wastewater is directly fed into a micro vortex flocculation reactor, a coking wastewater flocculant is added for flocculation reaction, then polyacrylamide is added for continuous flocculation, precipitation is carried out, and supernatant fluid is discharged.
Further, the addition amount of the coking wastewater flocculant is 2000-5000 ppm.
Further, after adding the coking wastewater flocculant, the flocculation reaction time is 15-20 min.
The preparation method and the application of the coking wastewater flocculant have the beneficial effects that:
According to the invention, aluminum chloride and ferric chloride are used as inorganic metal salts, APTES is used as a silicon source to prepare the coking wastewater flocculant with coexisting ionic bonds and covalent bonds, and a micro vortex flocculation reactor is used in combination, so that COD, thiocyanate, chromaticity, turbidity and other components in the coking wastewater can be removed at the same time, and the treatment effect is effectively improved;
According to the invention, by changing a silicon source and selecting aluminum and iron elements in a proper proportion, the inorganic-organic hybrid flocculant coexisting with ionic bonds and covalent bonds is prepared, and meanwhile, the inorganic components and the organic components are connected through the cooperation of the ionic bonds and the covalent bonds, so that the prepared coking wastewater flocculant has compact pore morphology and a three-dimensional space network structure; the silicon-aluminum polymeric macromolecules, the silicon-iron polymeric macromolecules, the amino groups, the carbon chains and the compact space structure in the coking wastewater flocculant are mutually coordinated, so that the concentration of particles in a system can be effectively increased, the generation of nuclear flocs is promoted, the organic substances are adsorbed, the flocculation effect is enhanced, the speed of the coagulation process is accelerated, and the coagulation effect is improved;
According to the invention, micro vortex flocculation is used by matching the coking wastewater flocculant, so that colloidal particles in the coking wastewater flocculant are easier to destabilize to generate micro micelles, and coking wastewater can form vortices with different sizes in a micro vortex flocculation reactor, so that larger speed difference exists between different flow layers, further, the relative movement between the micro micelles and the coking wastewater is increased, the collision probability is improved, and the accelerated coagulation of the micro micelles to form flocs is promoted; meanwhile, centrifugal force is generated by the vortex motion, so that the micro-micelle is driven to generate speed in the radial direction, and the collision probability between the micro-micelle and the coking wastewater is increased, so that the micro-micelle is coagulated to form flocs; when the flocs grow to a certain degree, the flocs with lower compactness are crushed under the action of vortex shear force, and the crushed flocs are flocculated again to form the flocs with higher compactness, so that the treatment of the subsequent process is facilitated;
the coking wastewater flocculant disclosed by the invention is simple in preparation process, good in treatment effect on coking wastewater and suitable for industrial popularization.
Detailed Description
The following description of the technical solution in the embodiments of the present invention is clear and complete. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Example 1 preparation method of coking wastewater flocculant
S1, adding 0.03mol (4.00 g) of aluminum chloride and 0.02mol (3.25 g) of ferric chloride into 10mL of absolute ethyl alcohol, and uniformly mixing at room temperature (generally, the room temperature is 15-40 ℃ and the room temperature is 25 ℃ in the embodiment) by using a magnetic stirrer to obtain a mixed solution A;
At room temperature (generally, the room temperature is 15-40 ℃, and the room temperature is 25 ℃ in the embodiment), 200mL of absolute ethyl alcohol, 50mL of water and 10mL of hydrochloric acid (the concentration is 2 mol/L) are taken and mixed uniformly, and APTES is added until the molar quantity of Si in the solution is 0.5mol (the molar ratio of Si to Al is 1:0.06, and the dosage of APTES is 110.65g at the moment) to obtain a mixed solution B;
S2, slowly dripping the mixed solution A into the mixed solution B at room temperature (generally, the room temperature is 15-40 ℃ and is 25 ℃ in the embodiment) under the condition of intense stirring, continuously stirring for 30min after dripping is finished (marked as time of first stirring), then adding a proper amount of sodium hydroxide aqueous solution (with the concentration of 5 mol/L) for alkalizing, stopping adding the sodium hydroxide aqueous solution after the pH value of the sodium hydroxide aqueous solution is 9.5 in the system, and continuously stirring the obtained system for 60min (marked as time of second stirring) to obtain uniform sol;
S3, taking sol, aging at room temperature (generally, the room temperature is 15-40 ℃, and the room temperature is 25 ℃ in the embodiment) until the sol becomes xerogel, and finally, continuously drying the xerogel at the room temperature (generally, the room temperature is 15-40 ℃, and the room temperature is 25 ℃ in the embodiment), and crushing to obtain solid powder, namely the coking wastewater flocculant, and marking the solid powder as M1.
Examples 2 to 5 preparation method of coking wastewater flocculant
Examples 2 to 5 are respectively a preparation method of flocculant for coking wastewater, which has the same steps as example 1, and the difference is only that part of parameters are different, and the specific details are shown in Table 1:
table 1 list of parameters in examples 2 to 5
The contents of the other parts of examples 2 to 5 are the same as those of example 1, and will not be described again here.
Comparative examples 1 to 5 preparation method of coking wastewater flocculant
Comparative examples 1 to 5 are comparative tests of the preparation process of the coking wastewater flocculant in example 1, which differ only in that:
In comparative example 1, the amount of ferric chloride was 0.01mol, the amounts of other raw materials and the process parameters were unchanged, and the flocculant of the obtained coking wastewater was designated as DM1.
In comparative example 2, the amount of ferric chloride was 0.04mol, the amounts of other raw materials and the process parameters were unchanged, and the flocculant of the obtained coking wastewater was designated as DM2.
In comparative example 3, sodium silicate was used as a silicon source instead of APTES, and the molar ratio of Si/Al in sodium silicate was also 1:0.06, the dosage of other raw materials and the technological parameters are unchanged, and the flocculant of the coking wastewater is marked as DM3.
APTES was added to the mixed solution B in comparative example 4 until the molar amount of Si in the solution was 0.2mol (at this time, the molar ratio of Si/Al was 1:0.15), the amounts of other raw materials and the process parameters were unchanged, and the resulting coking wastewater flocculant was designated DM4.
APTES was added to the mixed solution B in comparative example 5 until the molar amount of Si in the solution was 1mol (at this time, the molar ratio of Si/Al was 1:0.01), the amounts of other raw materials and the process parameters were unchanged, and the resulting coking wastewater flocculant was designated DM5.
Example 6 application of coking wastewater flocculant
The coking wastewater flocculating agents M1 to M5 and DM1 to DM11 prepared in examples 1 to 5 and comparative examples 1 to 5 are respectively treated for biochemical secondary sedimentation water (namely coking wastewater to be treated) of a sewage station of a coking plant, and the specific steps are as follows:
directly feeding the biochemical secondary sedimentation water into a micro vortex flocculation reactor (the conventional micro vortex flocculation reactor is adopted) according to the flow of 10m 3/h, adding 5000ppm of coking wastewater flocculant, carrying out flocculation reaction for 15min, adding 1ppm of polyacrylamide, flocculating for 10min, precipitating, and flowing out supernatant, wherein the specific treatment results are shown in Table 2:
TABLE 2 coking wastewater flocculant Effect List
As can be seen from Table 2, the coking wastewater flocculant of the invention can effectively remove COD, thiocyanate radical, chromaticity, turbidity and other components in coking wastewater, has good treatment effect, and the supernatant after treatment can directly reach the discharge standard.
Examples 7 to 9 application of coking wastewater flocculant
In example 7, biochemical secondary sedimentation water directly enters a micro vortex flocculation reactor according to the flow of 10M 3/h, 2000ppm of coking wastewater flocculant M1 is added, after flocculation reaction for 20min, 5ppm of polyacrylamide is added, flocculation is carried out for 20min, precipitation is carried out, and supernatant fluid is discharged;
In example 8, biochemical secondary sedimentation water directly enters a micro vortex flocculation reactor according to the flow of 10M 3/h, 4000ppm of coking wastewater flocculant M1 is added, after flocculation reaction for 18min, 2ppm of polyacrylamide is added, flocculation is carried out for 15min, precipitation is carried out, and supernatant fluid is discharged;
In the example 9, biochemical secondary sedimentation water directly enters a traditional coagulation reactor according to the flow of 10M 3/h, 5000ppm of coking wastewater flocculant M1 is added, flocculation reaction is carried out for 15min, 1ppm of polyacrylamide is added, flocculation is carried out for 10min, precipitation is carried out, and supernatant fluid is discharged;
The specific treatment results in examples 7 to 9 are shown in Table 3:
TABLE 3 coking wastewater flocculant Effect List
As can be seen from Table 3, when the dosage of the flocculant for coking wastewater is reduced, the flocculant has a slight influence on the removal effect of COD, thiocyanate, chromaticity, turbidity and other components in the coking wastewater, but still has a good treatment effect, and the supernatant after treatment can directly reach the discharge standard. However, when a conventional coagulation reactor is used instead of the micro-vortex flocculation reactor, the treatment effect is reduced, so that the coking wastewater flocculant of the invention needs to be matched with the micro-vortex flocculation reactor in the practical application process.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (10)
1. The preparation method of the coking wastewater flocculant is characterized by comprising the following steps of:
S1, taking a molar ratio of 3: adding 1.8-2.2 of aluminum chloride and ferric chloride into absolute ethyl alcohol, and uniformly mixing to obtain a mixed solution A;
Mixing absolute ethyl alcohol, water and hydrochloric acid uniformly, and then adding APTES to obtain a mixed solution B;
s2, slowly dropwise adding the mixed solution A into the mixed solution B, continuously reacting after the dropwise adding, adding sodium hydroxide for alkalization, and continuously reacting the obtained system to obtain uniform sol;
s3, taking sol for aging until the sol becomes xerogel, then continuously drying the xerogel, and crushing to obtain the coking wastewater flocculant.
2. The method for preparing a flocculant for coking wastewater according to claim 1, wherein in step S1, the molar ratio of silicon in the added APTES to aluminum in the mixed solution a is 1:0.05 to 0.06.
3. The method for preparing a flocculant for coking wastewater according to claim 1 or 2, wherein in the step S2, sodium hydroxide is added until the pH of the obtained system is 9.0 to 10.0.
4. The method for preparing a flocculant for coking wastewater according to claim 1 or 2, wherein in the step S2, the mixed solution B is added dropwise with the mixed solution a under vigorous stirring.
5. The method for preparing a coking wastewater flocculant according to claim 1 or 2, wherein in the step S2, the reaction time is 30-40 min after the completion of the dropwise addition of the mixed solution B;
adding sodium hydroxide to alkalize, and continuing the reaction of the obtained system for more than 60 minutes.
6. The method for preparing a coking wastewater flocculant according to claim 1 or 2, wherein,
In the step S2, after the mixed solution B is dripped, the reaction temperature is room temperature;
Adding sodium hydroxide to alkalize, and keeping the temperature of the obtained system at room temperature;
in step S3, the temperature of aging and drying are both room temperature.
7. Use of a coking wastewater flocculant, characterized in that the coking wastewater flocculant prepared by the preparation method of any one of claims 1-6 is matched with a micro vortex flocculation reactor to treat coking wastewater.
8. The use according to claim 7, wherein the specific process of the use is that the coking wastewater is directly fed into a micro vortex flocculation reactor, a coking wastewater flocculant is added for flocculation reaction, then polyacrylamide is added for flocculation, precipitation and supernatant liquid outflow.
9. The use according to claim 8, wherein the flocculant for coking wastewater is added in an amount of 2000 to 5000ppm.
10. Use according to claim 8 or 9, characterized in that the flocculation reaction takes 15-20 min after adding the coking wastewater flocculant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410167759.2A CN117985825A (en) | 2024-02-06 | 2024-02-06 | Preparation method and application of coking wastewater flocculant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410167759.2A CN117985825A (en) | 2024-02-06 | 2024-02-06 | Preparation method and application of coking wastewater flocculant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117985825A true CN117985825A (en) | 2024-05-07 |
Family
ID=90889266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410167759.2A Pending CN117985825A (en) | 2024-02-06 | 2024-02-06 | Preparation method and application of coking wastewater flocculant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117985825A (en) |
-
2024
- 2024-02-06 CN CN202410167759.2A patent/CN117985825A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112390479B (en) | Chemical synthesis pharmaceutical wastewater treatment system and treatment method | |
| CN116282441B (en) | Preparation method of flocculant for catalytic cracking flue gas desulfurization and denitrification wastewater | |
| CN1385373A (en) | Coagulant for sewage treatment | |
| CN113955837A (en) | Inorganic-organic composite polymer defluorination flocculant for water treatment and preparation method thereof | |
| Nasri et al. | Timecourse study of coagulation-flocculation process using aluminum sulfate | |
| CN109354314B (en) | Combined biological bed treatment process for low-carbon-source high-ammonia-nitrogen high-organophosphorus wastewater | |
| CN113860458B (en) | Composite chelating agent and preparation method and application thereof | |
| CN104355383A (en) | Composite flocculant solution for treating port oily wastewater and preparation method of composite flocculant solution | |
| CN113104900A (en) | Composite polyaluminum ferric chloride flocculating dephosphorization agent and preparation method thereof | |
| KR100331341B1 (en) | A method of water treatment using coagulant composition | |
| CN113044942A (en) | Bentonite coagulant and application thereof in wastewater treatment | |
| CN110040831B (en) | Preparation method of sodium alginate-polymethacryloxyethyl trimethyl ammonium chloride organic flocculant | |
| CN117985825A (en) | Preparation method and application of coking wastewater flocculant | |
| CN117362519A (en) | Sewage flocculant and preparation method and application thereof | |
| KR101270060B1 (en) | Apparatus for phosphorous removal from waste water | |
| CN111410259A (en) | Novel coagulation wastewater treatment process | |
| Arnold-Smith et al. | Polyaluminium silicate sulphate—a new coagulant for potable and wastewater treatment | |
| CN114684903B (en) | Preparation method of inorganic-organic reinforced dephosphorization flocculant and wastewater treatment method | |
| CN102633335A (en) | Sewage treatment method | |
| KR101088148B1 (en) | Electrical neutralization of colloidal particles with speed control how water | |
| CN108178270A (en) | A kind of preparation method of binary compound type purifying agent | |
| CN110655156B (en) | Catalytic flue gas desulfurization wastewater flocculant and preparation method thereof | |
| CN113788568A (en) | Coking wastewater advanced treatment and coupling fluoride ion removal process | |
| CN113429112A (en) | Novel sludge dewatering method | |
| CN1029918C (en) | Production method of polymeric compounded flocculant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |