CN107032523A - A kind of papermaking-method reconstituted tobaccos method of wastewater treatment - Google Patents
A kind of papermaking-method reconstituted tobaccos method of wastewater treatment Download PDFInfo
- Publication number
- CN107032523A CN107032523A CN201710298963.8A CN201710298963A CN107032523A CN 107032523 A CN107032523 A CN 107032523A CN 201710298963 A CN201710298963 A CN 201710298963A CN 107032523 A CN107032523 A CN 107032523A
- Authority
- CN
- China
- Prior art keywords
- papermaking
- reconstituted tobaccos
- waste water
- wastewater treatment
- method reconstituted
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 47
- 241000208125 Nicotiana Species 0.000 title claims abstract description 27
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 27
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 15
- 239000002351 wastewater Substances 0.000 claims abstract description 25
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000701 coagulant Substances 0.000 claims abstract description 19
- 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 14
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000713 high-energy ball milling Methods 0.000 claims abstract description 10
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 230000001112 coagulating effect Effects 0.000 abstract description 10
- 230000015271 coagulation Effects 0.000 abstract description 10
- 238000005345 coagulation Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 235000012216 bentonite Nutrition 0.000 description 13
- 238000002360 preparation method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- -1 papermaking Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 241000372132 Hydrometridae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229940058641 actidose Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003701 mechanical milling Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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)
- Water Treatment By Sorption (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses a kind of papermaking-method reconstituted tobaccos method of wastewater treatment, belongs to technical field of waste water processing.The method of the invention is：Binary compound coagulant will be obtained after bentonite and activated carbon high-energy ball milling, bentonitic parts by weight are that the parts by weight of 1 ~ 6, activated carbon are 1 ~ 6, binary compound coagulant is configured to the binary complex coagulation agent solution that mass percent concentration is 10% ~ 20%；Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and stirs 3 ~ 10 min；Binary complex coagulation agent solution is added, and stirs 3 ~ 10 min；Polyacrylamide is eventually adding, and stirs 3 ~ 10 min；Waste water is stood and filtered after a period of time.The method of the invention enhances existing papermaking-method reconstituted tobaccos coagulating waste water process, reduces the consumption of bodied ferric sulfate, reduces inorganic salt content in waste water, reduces a ton processing cost, improves treatment effect.
Description
Technical field
The present invention relates to a kind of papermaking-method reconstituted tobaccos method of wastewater treatment, belong to technical field of waste water processing.
Background technology
Coagulation is an important method of water process, to remove suspension and colloid pollution material tiny in water removal.It is mixed
Solidifying method can be used for various industrial wastewaters（Such as papermaking, steel, weaving, coal, ore dressing, chemical industry, food industrial wastewater）Pre- place
Tertiary treatment and the Treatment of Sludge of reason, intermediate treatment or final process and municipal sewage.
Papermaking-method reconstituted tobaccos industrial utilization bodied ferric sulfate and polyacrylamide coagulating treatment waste water, the waste water after processing
Colourity and COD can reach《Integrated wastewater discharge standard（GB 8978-1996）》Secondary standard（Colourity≤80, COD≤150
mg·L-1）.However, existing papermaking-method reconstituted tobaccos coagulating waste water technique is present, dosage of PAC is big, inorganic in processed waste water
The problem of salt content is exceeded, ton processing cost is high.
The content of the invention
The technical problem to be solved in the present invention is：Bodied ferric sulfate is used during existing papermaking-method reconstituted tobaccos coagulating waste water
Measure the problems such as inorganic salt content is exceeded, ton processing cost is high in big, waste water.
It is an object of the invention to provide：A kind of papermaking-method reconstituted tobaccos method of wastewater treatment, specifically includes following steps：
（1）Binary compound coagulant will be obtained after bentonite and activated carbon high-energy ball milling, bentonitic parts by weight are 1 ~ 6, lived
Property charcoal parts by weight be 1 ~ 6, it is compound mixed that binary compound coagulant is configured into the binary that mass percent concentration is 10% ~ 20%
Solidifying agent solution；
（2）Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and stirs 3 ~ 10 min, binary compound coagulant is added
Solution, and stir 3 ~ 10 min；Polyacrylamide is eventually adding, and stirs 3 ~ 10 min；
（3）By step（2）Waste water stands and filtered after a period of time.
It is preferred that, step of the present invention（1）Middle rotational speed of ball-mill is 300 ~ 600 r/min, and Ball-milling Time is 15 ~ 30 min.
It is preferred that, step of the present invention（2）Middle bodied ferric sulfate consumption be 1000 ~ 2000 mg/L, mixing speed be 100 ~
600 r/min。
It is preferred that, step of the present invention（2）Middle binary compound coagulant solution usage be 1 ~ 6 mL/L, mixing speed be 100 ~
600 r/min。
It is preferred that, step of the present invention（2）Middle polyacrylamide be mass percent concentration 0.5 ‰ solution, consumption be 1 ~
6mL/L, mixing speed is 100 ~ 600 r/min.
The present invention carries out bentonite and activated carbon in high-energy ball milling, mechanical milling process due to easy dilatancy between bentonite bed,
Nonpolar and hydrophobic activated carbon granule is entered between bentonite bed, increases bentonite interfloor distance and specific surface area, is expanded
Adsorption space in interlayer, the binary compound coagulant particle diameter distribution of generation is uniform, and specific surface area is big, while it is excellent to have bentonite concurrently
In different absorption property, ion-exchange performance and good water dispersiveness and activated carbon physical absorption, chemisorbed, oxidation,
The characteristic such as catalysis and reduction.
Beneficial effects of the present invention：
（1）Binary compound coagulant prepared by the present invention has bentonite dispersiveness good in water, with its configuration
Suspension dispersion effect is good, and standing will not also be layered for a long time, easy to use, it is easy to preserve.
（2）Binary compound coagulant of the present invention reduces polymerization for the processing of papermaking-method reconstituted tobaccos coagulating waste water
Ferric sulfate consumption, reduces waste water inorganic salt content, reduces a ton processing cost, improves treatment effect, the waste water after processing
Colourity and COD can reach《Urban wastewater treatment firm pollutant emission standard（GB 18918-2002）》One-level A standards（Colourity
The mgL of≤30, COD≤50-1）.
（3）The present invention utilizes the existing papermaking-method reconstituted tobaccos coagulating waste water process of binary compound coagulant optimization reinforcing；It is swollen
Profit soil and activated carbon granule are due to water insoluble, in the formation of bodied ferric sulfate flco and growth process, can be as forming flco
Skeleton, and improve the alumen ustum of generation small and it is loose, be difficult sink situation, make the flco to be formed closely knit and have preferable sedimentation
Performance.
Embodiment
The present invention is described in further detail with reference to specific embodiment, but protection scope of the present invention is not limited to
The content.
Embodiment 1
（1）The preparation of binary compound coagulant：5 g bentonites and 5 g activated carbons are put into ball grinder, turned with 500 r/min
It is well mixed after fast high-energy ball milling, the min of ball milling 20 with 90 g water and binary complex coagulation agent solution is made.
（2）Coagulating treatment：Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and stirs 3 min, binary is added
Complex coagulation agent solution, and stir 3 min；Polyacrylamide is eventually adding, and stirs 3 min.
The dosing of table 1 and mixing speed
Change of water quality before and after the papermaking-method reconstituted tobaccos wastewater treatment of table 2
。
Embodiment 2
（1）The preparation of binary compound coagulant：7.5 g bentonites and 7.5 g activated carbons are put into ball grinder, with 300 r/
It is well mixed after min rotating speed high-energy ball millings, the min of ball milling 30 with 85 g water and binary complex coagulation agent solution is made.
（2）Coagulating treatment：Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and stirs 10min, binary is added
Complex coagulation agent solution, and stir 8min；Polyacrylamide is eventually adding, and stirs 10 min.
The dosing of table 3 and mixing time
Change of water quality before and after the papermaking-method reconstituted tobaccos wastewater treatment of table 4
。
Embodiment 3
The preparation of binary compound coagulant：
2g bentonites and 3g activated carbons are put into ball grinder, with 600 r/min rotating speed high-energy ball millings, with 45 after ball milling 15min
The well mixed obtained binary complex coagulation agent solution of g water.
（2）Coagulating treatment：Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and stirs 8min, binary is added
Complex coagulation agent solution, and stir 10 min；Polyacrylamide is eventually adding, and stirs 7min.
The dosing of table 5 and mixing speed
Change of water quality before and after the papermaking-method reconstituted tobaccos wastewater treatment of table 6
。
Embodiment 4（Comparative example）
The preparation of binary compound coagulant：
5 g bentonites and 5 g activated carbons are put into ball grinder, with 500 r/min rotating speed high-energy ball millings, after the min of ball milling 20 with
The well mixed obtained binary complex coagulation agent solution of 90 g water.
It is bentonitic to prepare：
10g bentonites are put into ball grinder, with 500 r/min rotating speed high-energy ball millings, mixed with 90g water after ball milling 20min
Even obtained bentonite solution.
The preparation of activated carbon：
10g activated carbons are put into ball grinder, with 500 r/min rotating speed high-energy ball millings, mixed with 90g water after the min of ball milling 20
Even obtained Actidose.
Coagulating treatment：Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and stirs 3min, binary is added and is combined
Coagulant solution, and stir 3 min；Polyacrylamide is eventually adding, and stirs 3min.
The dosing of table 7 and mixing time
Change of water quality before and after the papermaking-method reconstituted tobaccos wastewater treatment of table 8
。
Claims (5)
1. a kind of papermaking-method reconstituted tobaccos method of wastewater treatment, it is characterised in that specifically include following steps：
（1）Binary compound coagulant will be obtained after bentonite and activated carbon high-energy ball milling, bentonitic parts by weight are 1 ~ 6, lived
Property charcoal parts by weight be 1 ~ 6, it is compound mixed that binary compound coagulant is configured into the binary that mass percent concentration is 10% ~ 20%
Solidifying agent solution；
（2）Bodied ferric sulfate is added into papermaking-method reconstituted tobaccos waste water, and is stirred a period of time, binary compound coagulant is added
Solution, and and stir a period of time；Polyacrylamide is eventually adding, and stirs a period of time；
（3）By step（2）Waste water stands and filtered after a period of time.
2. papermaking-method reconstituted tobaccos method of wastewater treatment according to claim 1, it is characterised in that：Rotational speed of ball-mill be 300 ~
600 r/min, Ball-milling Time is 15 ~ 30 min.
3. papermaking-method reconstituted tobaccos method of wastewater treatment according to claim 1, it is characterised in that：Bodied ferric sulfate consumption is
1000 ~ 2000 mg/L, mixing speed is 100 ~ 600 r/min, and mixing time is 3 ~ 10 min.
4. papermaking-method reconstituted tobaccos method of wastewater treatment according to claim 1, it is characterised in that：Binary compound coagulant is molten
Liquid consumption is 1 ~ 6mL/L, and mixing speed is 100 ~ 600 r/min, and mixing time is 3 ~ 10 min.
5. papermaking-method reconstituted tobaccos method of wastewater treatment according to claim 1, it is characterised in that：Polyacrylamide is quality
The solution of concentration 0.5 ‰, consumption is 1 ~ 6mL/L, and mixing speed is 100 ~ 600 r/min, and mixing time is 3 ~ 10 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710298963.8A CN107032523B (en) | 2017-05-02 | 2017-05-02 | Paper-making reconstituted tobacco wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710298963.8A CN107032523B (en) | 2017-05-02 | 2017-05-02 | Paper-making reconstituted tobacco wastewater treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107032523A true CN107032523A (en) | 2017-08-11 |
| CN107032523B CN107032523B (en) | 2020-02-07 |
Family
ID=59538201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710298963.8A Active CN107032523B (en) | 2017-05-02 | 2017-05-02 | Paper-making reconstituted tobacco wastewater treatment method |
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| Country | Link |
|---|---|
| CN (1) | CN107032523B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841497A (en) * | 2020-07-30 | 2020-10-30 | 盐城工学院 | Modified loofah sponge-based biomass charcoal and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4405287B2 (en) * | 2004-03-02 | 2010-01-27 | 征八朗 三浦 | Dephosphorizing agent and dephosphorizing method using the same |
| CN101811764A (en) * | 2010-04-29 | 2010-08-25 | 南京神克隆科技有限公司 | Efficient ecological type sewage and sludge treating agent and preparation method thereof |
| CN102276093A (en) * | 2011-07-19 | 2011-12-14 | 湖北中烟工业有限责任公司 | Treatment method of papermaking method tobacco sheet production wastewater |
| CN102320702A (en) * | 2011-08-23 | 2012-01-18 | 辽宁科技大学 | The method of Coagulation and Adsorption and chemical oxidation associating advanced treatment on coking wastewater |
| CN103466743A (en) * | 2013-09-26 | 2013-12-25 | 沈阳化工大学 | Method for pretreating high-concentration pharmaceutical wastewater by using bentonite composite intercalation material |
-
2017
- 2017-05-02 CN CN201710298963.8A patent/CN107032523B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4405287B2 (en) * | 2004-03-02 | 2010-01-27 | 征八朗 三浦 | Dephosphorizing agent and dephosphorizing method using the same |
| CN101811764A (en) * | 2010-04-29 | 2010-08-25 | 南京神克隆科技有限公司 | Efficient ecological type sewage and sludge treating agent and preparation method thereof |
| CN102276093A (en) * | 2011-07-19 | 2011-12-14 | 湖北中烟工业有限责任公司 | Treatment method of papermaking method tobacco sheet production wastewater |
| CN102320702A (en) * | 2011-08-23 | 2012-01-18 | 辽宁科技大学 | The method of Coagulation and Adsorption and chemical oxidation associating advanced treatment on coking wastewater |
| CN103466743A (en) * | 2013-09-26 | 2013-12-25 | 沈阳化工大学 | Method for pretreating high-concentration pharmaceutical wastewater by using bentonite composite intercalation material |
Non-Patent Citations (1)
| Title |
|---|
| 李本高: "《现代工业水处理技术与应用》", 30 June 2004, 北京：中国石化出版社， * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111841497A (en) * | 2020-07-30 | 2020-10-30 | 盐城工学院 | Modified loofah sponge-based biomass charcoal and preparation method and application thereof |
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| CN107032523B (en) | 2020-02-07 |
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