CN111186919A - Novel special compound reagent for high-hardness high-silicon industrial wastewater - Google Patents
Novel special compound reagent for high-hardness high-silicon industrial wastewater Download PDFInfo
- Publication number
- CN111186919A CN111186919A CN201910622130.1A CN201910622130A CN111186919A CN 111186919 A CN111186919 A CN 111186919A CN 201910622130 A CN201910622130 A CN 201910622130A CN 111186919 A CN111186919 A CN 111186919A
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- Prior art keywords
- hardness
- adding amount
- wastewater
- silicon
- mass part
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- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 43
- 239000010703 silicon Substances 0.000 title claims abstract description 43
- 150000001875 compounds Chemical class 0.000 title claims abstract description 18
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 18
- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 51
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 34
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 24
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 17
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 17
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 17
- 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 claims abstract description 17
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 17
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims abstract description 17
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 17
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 17
- 239000002351 wastewater Substances 0.000 claims description 40
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 26
- 239000003814 drug Substances 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- 238000000034 method Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 150000003377 silicon compounds Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013401 experimental design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- 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
- C02F1/5236—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 discloses a novel special compound reagent for high-hardness high-silicon industrial wastewater, which comprises 6 components of sodium hydroxide, sodium carbonate, polymeric ferric sulfate, ferrous sulfate, polymeric aluminum chloride and polyacrylamide, wherein the mass part of the sodium hydroxide is 1-4, the mass part of the sodium carbonate is 3-10, the mass part of the polymeric ferric sulfate is 1.2-10, the mass part of the ferrous sulfate is 0.75-5, the mass part of the polymeric aluminum chloride is 0.15-0.5, and the mass part of the polyacrylamide is 0.015-0.05.
Description
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a novel special compound reagent for high-hardness high-silicon industrial wastewater.
Background
In a large amount of industrial wastewater such as coal chemical gasification grey water with high hardness and high silicon compound content, equipment and pipelines are easy to scale and block due to high hardness and silicon (usually recorded by silicon dioxide) content, so that a production device cannot be stopped to clean or replace the pipelines and the equipment, the long-period stable operation of a process system is seriously influenced, and the system operation and the starting and stopping costs are greatly increased. Meanwhile, when the high-hardness and high-silicon wastewater is subjected to advanced treatment, the reverse osmosis membrane with high silicon content can be scaled in a short time and is difficult to clean, so that the membrane performance is reduced or even loses efficacy, the service life of the reverse osmosis membrane and the treatment efficiency of a wastewater treatment system are greatly influenced, the water treatment cost is improved, and the problem which puzzles coal chemical enterprises is solved.
Therefore, it is desirable to have a novel special compound agent for high-hardness high-silicon industrial wastewater, which can overcome or at least alleviate the above-mentioned defects of the prior art.
Disclosure of Invention
In order to solve the technical problem of treatment and recycling of the high-hardness and high-silicon compound wastewater in the coal chemical industry, the invention discloses a novel special compound medicament for the high-hardness and high-silicon industrial wastewater, which comprises 6 components of sodium hydroxide, sodium carbonate, polymeric ferric sulfate, ferrous sulfate, polymeric aluminum chloride and polyacrylamide, wherein the mass parts of the sodium hydroxide are 1-4, the sodium carbonate is 3-10, the polymeric ferric sulfate is 1.2-10, the ferrous sulfate is 0.75-5, the polymeric aluminum chloride is 0.15-0.5 and the polyacrylamide is 0.015-0.05.
Preferably, the adding amount of the sodium hydroxide is related to the alkalinity in the wastewater, the mass concentration ratio of the adding amount to the alkalinity is 2:3, and the adding amount is 200-800 mg/l.
Preferably, the adding amount of the sodium carbonate is related to the hardness content in the wastewater, the mass concentration ratio of the adding amount to the hardness is 1:1, and the adding amount is 600-2000 mg/l.
Preferably, the adding amount of the polymeric ferric sulfate is related to the content of silicon in the wastewater, the mass concentration ratio of the adding amount to the silicon is 3:1, and the adding amount is 240-2000 mg/l.
Preferably, the adding amount of the ferrous sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 1.5:1, and the adding amount is 150-1000 mg/l.
Preferably, the mass concentration ratio of the adding amount of the polyaluminium chloride to the hardness in the wastewater is 1:20, and the adding amount is 30-100 mg/l.
Preferably, the mass concentration ratio of the added amount of the polyacrylamide to the hardness in the wastewater is 1:200, and the added amount is 3-10 mg/l.
The precipitation method is an economical and efficient water treatment process, and has particularly outstanding economical efficiency for treating industrial wastewater with large water volume. The key point of the method is to find a suitable and efficient medicament. The invention comprehensively and systematically consults relevant documents at home and abroad aiming at the characteristics of the wastewater, and finds that few relevant documents are available for synchronously removing high-hardness and high-silicon compounds in industrial wastewater, and the documents of mature and efficient process methods and medicaments are not available. Based on the targets of efficient synchronous hardness and silicon removal and economy and applicability, the invention provides a series of experimental designs developed by corresponding special medicament compounding technology aiming at the characteristics of coal chemical wastewater, and obtains the research result of 'novel special compound medicament for high-hardness and high-silicon compound wastewater' under the conditions of high-hardness and high-silicon wastewater with different concentrations and single/combined series tests (including small test and middle test) including hardness removal and silicon removal experiments. The test of equivalent single and combined medicaments shows that the simultaneous removal of the temporary hardness, the permanent hardness and the silicon in the wastewater is difficult to achieve by using a single medicament due to the coexistence of the temporary hardness, the permanent hardness and the silicon compound in the wastewater, the temporary hardness, the permanent hardness and the silicon in the wastewater can be efficiently and synchronously removed under the combined action of the components in the compound medicament, the removal rate can reach more than 90 percent, the strength of a reactant floc is high, the hydrophobic property is good, and the precipitation and filter pressing are facilitated.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The following provides a detailed description of embodiments of the invention.
Example 1:
the novel special compound medicament for the high-hardness high-silicon industrial wastewater comprises 6 components of sodium hydroxide, sodium carbonate, polymeric ferric sulfate, ferrous sulfate, polymeric aluminum chloride and polyacrylamide, wherein the mass part of the sodium hydroxide is 1 part, the mass part of the sodium carbonate is 3 parts, the mass part of the polymeric ferric sulfate is 1.2 parts, the mass part of the ferrous sulfate is 0.75 part, the mass part of the polymeric aluminum chloride is 0.15 part, and the mass part of the polyacrylamide is 0.015 part.
The adding amount of the sodium hydroxide is related to the alkalinity of the wastewater, the mass concentration ratio of the adding amount to the alkalinity is 2:3, and the adding amount is 200 mg/l.
The adding amount of the sodium carbonate is related to the hardness content in the wastewater, the mass concentration ratio of the adding amount to the hardness is 1:1, and the adding amount is 600 mg/l.
The adding amount of the polymeric ferric sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 3:1, and the adding amount is 240 mg/l.
The adding amount of the ferrous sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 1.5:1, and the adding amount is 150 mg/l.
The mass concentration ratio of the adding amount of the polyaluminium chloride to the hardness in the wastewater is 1:20, and the adding amount is 30 mg/l.
The mass concentration ratio of the added amount of the polyacrylamide to the hardness in the wastewater is 1:200, and the added amount is 3 mg/l.
Example 2:
the novel special compound medicament for the high-hardness high-silicon compound wastewater comprises 6 components of sodium hydroxide, sodium carbonate, polymeric ferric sulfate, ferrous sulfate, polymeric aluminum chloride and polyacrylamide, wherein the mass part of the sodium hydroxide is 4, the mass part of the sodium carbonate is 10, the mass part of the polymeric ferric sulfate is 10, the mass part of the ferrous sulfate is 5, the mass part of the polymeric aluminum chloride is 0.5, and the mass part of the polyacrylamide is 0.05.
The adding amount of the sodium hydroxide is related to the alkalinity of the wastewater, the mass concentration ratio of the adding amount to the alkalinity is 2:3, and the adding amount is 800 mg/l.
The adding amount of the sodium carbonate is related to the hardness content in the wastewater, the mass concentration ratio of the adding amount to the hardness is 1:1, and the adding amount is 2000 mg/l.
The adding amount of the polymeric ferric sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 3:1, and the adding amount is 2000 mg/l.
The adding amount of the ferrous sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 1.5:1, and the adding amount is 1000 mg/l.
The mass concentration ratio of the added amount of the polyaluminium chloride to the hardness in the wastewater is 1:20, and the added amount is 100 mg/l.
The mass concentration ratio of the added amount of the polyacrylamide to the hardness in the wastewater is 1:200, and the added amount is 10 mg/l.
Example 4:
the novel special compound medicament for the high-hardness and high-silicon industrial wastewater comprises 6 components of sodium hydroxide, sodium carbonate, polymeric ferric sulfate, ferrous sulfate, polymeric aluminum chloride and polyacrylamide, wherein the mass part of the sodium hydroxide is 2 parts, the mass part of the sodium carbonate is 10 parts, the mass part of the polymeric ferric sulfate is 10 parts, the mass part of the ferrous sulfate is 5 parts, the mass part of the polymeric aluminum chloride is 0.5 part, and the mass part of the polyacrylamide is 0.05 part.
The adding amount of the sodium hydroxide is related to the alkalinity of the wastewater, the mass concentration ratio of the adding amount to the alkalinity is 2:3, and the adding amount is 200 mg/l.
The adding amount of the sodium carbonate is related to the hardness content in the wastewater, the mass concentration ratio of the adding amount to the hardness is 1:1, and the adding amount is 2000 mg/l.
The adding amount of the polymeric ferric sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 3:1, and the adding amount is 2000 mg/l.
The adding amount of the ferrous sulfate is related to the silicon content in the wastewater, the mass concentration ratio of the adding amount to the silicon is 1.5:1, and the adding amount is 1000 mg/l.
The mass concentration ratio of the added amount of the polyaluminium chloride to the hardness in the wastewater is 1:20, and the added amount is 100 mg/l.
The mass concentration ratio of the added amount of the polyacrylamide to the hardness in the wastewater is 1:200, and the added amount is 10 mg/l.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The novel special compound medicament for the high-hardness high-silicon industrial wastewater is characterized by comprising 6 components of sodium hydroxide, sodium carbonate, polymeric ferric sulfate, ferrous sulfate, polymeric aluminum chloride and polyacrylamide, wherein the mass part of the sodium hydroxide is 1-4, the mass part of the sodium carbonate is 3-10, the mass part of the polymeric ferric sulfate is 1.2-10, the mass part of the ferrous sulfate is 0.75-5, the mass part of the polymeric aluminum chloride is 0.15-0.5, and the mass part of the polyacrylamide is 0.015-0.05.
2. The novel special compound reagent for high-hardness and high-silicon industrial wastewater as claimed in claim 1, wherein: the adding amount of the sodium hydroxide is related to the alkalinity of the wastewater, and the mass concentration ratio of the adding amount to the alkalinity is 2:3, the addition amount is 200-800 mg/l.
3. The novel special compound reagent for high-hardness and high-silicon industrial wastewater as claimed in claim 1, wherein: the adding amount of the sodium carbonate is related to the hardness content in the wastewater, and the mass concentration ratio of the adding amount to the hardness is 1:1, the addition amount is 600-2000 mg/l.
4. The novel special compound reagent for high-hardness and high-silicon industrial wastewater as claimed in claim 1, wherein: the adding amount of the polymeric ferric sulfate is related to the silicon content in the wastewater, and the mass concentration ratio of the adding amount to the silicon is 3:1, the addition amount is 240-2000 mg/l.
5. The novel special compound reagent for high-hardness and high-silicon industrial wastewater as claimed in claim 1, wherein: the adding amount of the ferrous sulfate is related to the silicon content in the wastewater, and the mass concentration ratio of the adding amount to the silicon is 1.5:1, the addition amount is 150-1000 mg/l.
6. The novel special compound reagent for high-hardness and high-silicon industrial wastewater as claimed in claim 1, wherein: the mass concentration ratio of the adding amount of the polyaluminium chloride to the hardness in the wastewater is 1:20, the adding amount is 30-100 mg/l.
7. The novel special compound reagent for high-hardness and high-silicon industrial wastewater as claimed in claim 1, wherein: the mass concentration ratio of the adding amount of the polyacrylamide to the hardness of the wastewater is 1:200, the adding amount is 3-10 mg/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622130.1A CN111186919A (en) | 2019-07-10 | 2019-07-10 | Novel special compound reagent for high-hardness high-silicon industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622130.1A CN111186919A (en) | 2019-07-10 | 2019-07-10 | Novel special compound reagent for high-hardness high-silicon industrial wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111186919A true CN111186919A (en) | 2020-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910622130.1A Pending CN111186919A (en) | 2019-07-10 | 2019-07-10 | Novel special compound reagent for high-hardness high-silicon industrial wastewater |
Country Status (1)
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| CN (1) | CN111186919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920366A (en) * | 2022-06-30 | 2022-08-19 | 中国天辰工程有限公司 | Coal gasification wastewater hardness removal composite reagent and method without increasing salt content in water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018086096A1 (en) * | 2016-11-14 | 2018-05-17 | 江苏华安科研仪器有限公司 | Flocculant for wastewater in oil field |
| CN108585229A (en) * | 2018-01-22 | 2018-09-28 | 中国科学院生态环境研究中心 | A kind of drinking water softening composite drug and its application |
| CN108821406A (en) * | 2018-06-26 | 2018-11-16 | 中国天辰工程有限公司 | A kind of coal gasification waste water joint removes silicon hardness removing process method |
| CN108862696A (en) * | 2018-06-12 | 2018-11-23 | 德蓝水技术股份有限公司 | A kind of efficient desiliconizing agent and preparation method thereof in coal inhibition and generation work |
-
2019
- 2019-07-10 CN CN201910622130.1A patent/CN111186919A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018086096A1 (en) * | 2016-11-14 | 2018-05-17 | 江苏华安科研仪器有限公司 | Flocculant for wastewater in oil field |
| CN108585229A (en) * | 2018-01-22 | 2018-09-28 | 中国科学院生态环境研究中心 | A kind of drinking water softening composite drug and its application |
| CN108862696A (en) * | 2018-06-12 | 2018-11-23 | 德蓝水技术股份有限公司 | A kind of efficient desiliconizing agent and preparation method thereof in coal inhibition and generation work |
| CN108821406A (en) * | 2018-06-26 | 2018-11-16 | 中国天辰工程有限公司 | A kind of coal gasification waste water joint removes silicon hardness removing process method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920366A (en) * | 2022-06-30 | 2022-08-19 | 中国天辰工程有限公司 | Coal gasification wastewater hardness removal composite reagent and method without increasing salt content in water |
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Application publication date: 20200522 |