CN103723808A - Method adopting polymeric ferric sulfate and polyacrylamide for treating sewage - Google Patents
Method adopting polymeric ferric sulfate and polyacrylamide for treating sewage Download PDFInfo
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- CN103723808A CN103723808A CN201310677514.6A CN201310677514A CN103723808A CN 103723808 A CN103723808 A CN 103723808A CN 201310677514 A CN201310677514 A CN 201310677514A CN 103723808 A CN103723808 A CN 103723808A
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Abstract
The invention discloses a method for treating sewage with polymeric ferric sulfate and polyacrylamide. The method comprises the following steps: firstly, the polymeric ferric sulfate is added to sewage generated by reconstituted tobacco production adopting a paper-making process to form a mixture; after agitation, the polyacrylamide is added to the mixture and fully mixed with the mixture; the mixture is drained after flocculation and sedimentation. The amount of the added polymeric ferric sulfate is as follows: a polymeric ferric sulfate solution with mass percentage concentration of 10-50 percent is added to the sewage to be treated according to a proportion of 5-25 mass permillage; the amount of the added polyacrylamide is as follows: a polyacrylamide solution with 0.5-5 mass permillage concentration is added to the sewage to be treated according to the mass permillage of 1-5. The method can realize the purpose of lowering the COD and the chromaticity of reconstituted tobacco sewage, and enables the sewage subjected to treatment to be up to the grade II national emission standard.
Description
Technical field
The invention belongs to papermaking-method reconstituted tobaccos technical field of sewage.
Background technology
In traditional papermaking-method reconstituted tobaccos production technique, owing to extracting, separate and carry out with slurrying, the large amount of organic producing after slurrying directly enters into slurry, finally at the profiled section of manufacturing paper with pulp, with plain boiled water, enter into Sewage treatment systems, increased the processing load of Sewage treatment systems, the more difficult emission standard that reaches of sewage after processing.The technique of current domestic papermaking-method reconstituted tobaccos sewage disposal comprises just the operations such as heavy, anaerobism, aerobic, two heavy and air supportings, after anaerobic and aerobic are processed, in sewage, large amount of organic is effectively degraded, but still has the organism of part biological difficult degradation to be present in waste water.From reconstituted tobacco manufacturing enterprise its waste water of air supporting water outlet statistics, COD content is higher than 150mg/L, and colourity is greater than 80, does not reach national secondary discharge standard, badly influences the normal production of enterprise.Along with national energy-saving reduces discharging improving constantly of requiring, preferably a kind of method that can effectively reduce COD in reconstituted tobacco production waste just seems extremely urgent.
Bodied ferric sulfate is a kind of efficient inorganic high-molecular coagulant adopting growing up the 70's ends, and its chemical formula is [Fe
2(OH)
n(SO
4)
3-n/2]
m.Because it is compared with Tai-Ace S 150, polymer alumina coagulating agent, flocs unit is large, settling velocity fast, pH wide accommodation, and does not produce the features such as secondary pollution, is widely used in the coagulating treatment of trade effluent and original tap water.The domestic method of still not utilizing bodied ferric sulfate and polyacrylamide to process reconstituted tobacco production waste.
Summary of the invention
For existing papermaking-method reconstituted tobaccos production waste treatment technology, the present invention aims to provide a kind of method of utilizing bodied ferric sulfate and polyacrylamide to process reconstituted tobacco production waste, in realization reduction reconstituted tobacco sewage, the object of COD and colourity, makes the sewage after processing can reach national secondary discharge standard.
For achieving the above object, the present invention realizes like this.
The method of utilizing bodied ferric sulfate and polyacrylamide to dispose of sewage, produces in the sewage producing and first adds bodied ferric sulfate at papermaking-method reconstituted tobaccos, adds polyacrylamide after stirring again, after fully mixing, then discharges after flocculation, sedimentation with sewage; The add-on of bodied ferric sulfate is: the polymeric ferrous sulphate solution that mass percent concentration is 10%-50%, and 5 ‰-25 ‰ ratio is added in treatment sewage by mass percentage; The add-on of polyacrylamide is: mass percent concentration is 0.5 ‰-5 ‰ polyacrylamide solution, and 1 ‰-5 ‰ ratio is added in treatment sewage by mass percentage.
In the inventive method, the preferred value scope of the mass percent concentration of bodied ferric sulfate is that 20%-30% is, the addition preferable range value being added in treatment sewage is 10 ‰-20 ‰; The preferred value scope of the mass percent concentration of polyacrylamide is 1 ‰-3 ‰; The addition preferable range value being added in treatment sewage is 1%-3%.
Before sewage discharge after filtration, with sodium hydroxide solution, the pH value of water sample after processing is adjusted to 6.5-7.5 and discharges again.
The present invention adopts bodied ferric sulfate as main coagulating agent, and with polyacrylamide acting in conjunction, realize to reduce the object of COD and colourity in reconstituted tobacco sewage.The problems such as employing bodied ferric sulfate, as coagulating agent, has solved current Sewage treatment systems flocculation time long, and effect is not remarkable after polyacrylamide effect, can be flocculated rapidly simultaneously, shorten the settling time, lifting sewage processing efficiency.With respect to prior art, tool of the present invention has the following advantages:
1, can effectively reduce water-soluble biological hardly degraded organic substance in externally discharged waste water, air supporting is processed the COD of rear outer draining lower than 150mg/L;
2, can effectively reduce the colourity of externally discharged waste water, air supporting is processed the colourity of rear outer draining lower than 80;
3, the outer draining after processing reaches national secondary discharge standard;
4, efficiently solve a sewage disposal difficult problem that perplexs for a long time reconstituted tobacco enterprise, ensured the normal production of enterprise.
Embodiment
Embodiment 1
The method of utilizing bodied ferric sulfate and polyacrylamide to dispose of sewage, specific as follows:
1) bodied ferric sulfate is made into the solution of 10%-50%, standing to being reddish-brown liquid;
2) polyacrylamide is made into 0.5 ‰-5 ‰ solution, standing to colourless viscous liquid;
3) sodium hydroxide is made into 10% solution, stand-by;
4) polymeric ferrous sulphate solution step 1) being prepared is thrown in to treatment sewage in the ratio for the treatment of sewage weight 5 ‰-25 ‰, after stirring, produces tiny alumen ustum;
5) by step 2) the cationic-type polyacrylamide solution that configures throws in to treatment sewage in the ratio for the treatment of sewage weight 1 ‰-5 ‰, continues to stir, to alumen ustum flocculation, sedimentation;
6) sodium hydroxide solution configuring by step 3) is adjusted to 6.5-7.5, qualified discharge by the pH value of water sample after processing.
Embodiment 2
(1) polymeric ferrous sulphate solution of preparation 10%, is called for short solution A; Prepare 5 ‰ polyacrylamide solution, be called for short solution B, the sodium hydroxide solution of preparation 10%, is called for short solution C;
(2) solution A is added in pending water sample (COD=369.21 mg/L) in 25 ‰ ratio, stir 1-10 min, produce fine alumen ustum, ratio in 1 ‰ adds solution B, continue to stir, make alumen ustum flocculation, precipitation, more than standing 10-30 min, by solution C, the pH value of water sample after processing is adjusted between 6.5-7.5.
After utilizing bodied ferric sulfate and polyacrylamide to process water sample to be measured, get clear liquid and detect, COD=146.56, colourity=68.Reach emission standard.
embodiment 3
(1) polymeric ferrous sulphate solution of preparation 25%, is called for short solution D; Prepare 3 ‰ polyacrylamide solution, be called for short solution E, the sodium hydroxide solution of preparation 10%, is called for short solution C;
(2) solution D is added in pending water sample (COD=369.21 mg/L) in 10 ‰ ratio, stir 1-10 min, produce fine alumen ustum, ratio in 2 ‰ adds solution E, continue to stir, make alumen ustum flocculation, precipitation, more than standing 10-30 min, by solution C, the pH value of water sample after processing is adjusted between 6.5-7.5.
After utilizing bodied ferric sulfate and polyacrylamide to process water sample to be measured, get clear liquid and detect, COD=115.76, colourity=56.Reach emission standard.
embodiment 4
(1) polymeric ferrous sulphate solution of preparation 25%, is called for short solution D; Prepare 2 ‰ polyacrylamide solution, be called for short solution F, the sodium hydroxide solution of preparation 10%, is called for short solution C;
(2) solution D is added to pending water sample in 15 ‰ ratio, stir 1-10 min, produce fine alumen ustum, ratio in 3 ‰ adds solution F, continues to stir, and makes alumen ustum flocculation, precipitation, more than standing 10-30 min, by solution C, the pH value of water sample after processing is adjusted between 6.5-7.5.
After utilizing bodied ferric sulfate and polyacrylamide to process water sample to be measured, get clear liquid and detect, COD=103.57, colourity=34.Reach emission standard.
embodiment 5
(1) polymeric ferrous sulphate solution of preparation 50%, is called for short solution G; Prepare 0.5 ‰ polyacrylamide solution, be called for short Solution H, the sodium hydroxide solution of preparation 10%, is called for short solution C;
(2) Solution H is added in pending water sample (COD=369.21 mg/L) in 5 ‰ ratio, stir 1-10 min, produce fine alumen ustum, ratio in 5 ‰ adds Solution H, continue to stir, make alumen ustum flocculation, precipitation, more than standing 10-30 min, by solution C, the pH value of water sample after processing is adjusted between 6.5-7.5.
After utilizing bodied ferric sulfate and polyacrylamide to process water sample to be measured, get clear liquid and detect, COD=125.94, colourity=39.Reach emission standard.
embodiment 6
(1) polymeric ferrous sulphate solution of preparation 25%, is called for short solution D; Prepare 2 ‰ polyacrylamide solution, be called for short solution F, the sodium hydroxide solution of preparation 10%, is called for short solution C;
(2) getting solution D adds in pending water sample (COD=316 mg/L) in 20 ‰ ratio, stir 1-10 min, produce fine alumen ustum, ratio in 4 ‰ adds solution F, continue to stir, make alumen ustum flocculation, precipitation, more than standing 10-30 min, by solution C, the pH value of water sample after processing is adjusted between 6.5-7.5.
After utilizing bodied ferric sulfate and polyacrylamide to process water sample to be measured, get clear liquid and detect, COD=98.29, colourity=24.Reach emission standard.
| ? | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 |
| TCOD(mg/L) | 146.56 | 115.76 | 103.57 | 125.94 | 98.29 |
| Colourity | 68 | 56 | 34 | 39 | 24 |
| (Yes/No) up to standard | Be | Be | Be | Be | Be |
embodiment 7
Two water (COD=232mg/L) amounts that settle out that papermaking-method reconstituted tobaccos is produced are about 90m
3/ h injects bodied ferric sulfate stoste in a blend tank, and volume pump aperture is 120L/h, in another blend tank, injects polyacrylamide, and machine automatization makes up a prescription, and concentration is about 2 ‰-3 ‰, and volume pump aperture is 60L/h, and the time length is 160min altogether.After being disposed, in water port, sample, take medicament initially the interpolation time be starting point, be 45min after adding of agent sample time for the first time, every 15min sampling once, concrete outcome is as follows afterwards:
| Water outlet sample time | 45min | 60min | 75min | 90min | 105min | 145min |
| TCOD(mg/L) | 84.7 | 110 | 87 | 97 | 69 | 67 |
| Colourity | 40 | 46 | 36 | 42 | 29 | 31 |
Sewage after processing reaches the secondary discharge standard (colourity≤80, COD≤150) in GB8978-1996 < < integrated wastewater discharge standard > >.
Except as otherwise noted, percentage ratio of the present invention is mass percent.
Claims (3)
1. the method for utilizing bodied ferric sulfate and polyacrylamide to dispose of sewage, it is characterized in that, at papermaking-method reconstituted tobaccos, produce in the sewage producing and first add bodied ferric sulfate, after stirring, add again polyacrylamide, after fully mixing with sewage, then discharge after flocculation, sedimentation; The add-on of bodied ferric sulfate is: the polymeric ferrous sulphate solution that mass percent concentration is 10%-50%, and 5 ‰-25 ‰ ratio is added in treatment sewage by mass percentage; The add-on of polyacrylamide is: mass percent concentration is 0.5 ‰-5 ‰ polyacrylamide solution, and 1 ‰-5 ‰ ratio is added in treatment sewage by mass percentage.
2. the method for utilizing according to claim 1 bodied ferric sulfate and polyacrylamide to dispose of sewage, it is characterized in that, the preferred value scope of the mass percent concentration of bodied ferric sulfate is that 20%-30% is, the addition preferable range value being added in treatment sewage is 10 ‰-20 ‰; The preferred value scope of the mass percent concentration of polyacrylamide is 1 ‰-3 ‰; The addition preferable range value being added in treatment sewage is 1%-3%.
3. according to the method for utilizing bodied ferric sulfate and polyacrylamide to dispose of sewage described in claim 1 or 2, it is characterized in that, before the sewage discharge after filtration, with sodium hydroxide solution, the pH value of water sample after processing is adjusted to 6.5-7.5 and discharges again.
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| CN201310677514.6A CN103723808A (en) | 2013-12-13 | 2013-12-13 | Method adopting polymeric ferric sulfate and polyacrylamide for treating sewage |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478050A (en) * | 2014-12-01 | 2015-04-01 | 郑州大学 | Preparation method and application of modified polyferric sulfate for treating industrial wastewater |
| CN106966526A (en) * | 2017-05-03 | 2017-07-21 | 昆明理工大学 | The processing method of papermaking-method reconstituted tobaccos waste water |
| CN109052717A (en) * | 2018-08-30 | 2018-12-21 | 海南金海浆纸业有限公司 | A kind of deep treatment method of paper-making effluent |
| CN109928473A (en) * | 2019-03-08 | 2019-06-25 | 宁夏水投清水源水处理科技有限公司 | A kind of composite water purifying efficient flocculant preparation process |
| CN111689607A (en) * | 2020-06-18 | 2020-09-22 | 常州大学 | Method for chemically coagulating blue algae in lake water |
Citations (3)
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| CN1115741A (en) * | 1994-07-27 | 1996-01-31 | 华南师范大学 | Sewage purifying process in regenerated-paper making |
| JP2003145168A (en) * | 2001-11-07 | 2003-05-20 | Ebara Corp | Flocculation and solid-liquid separation method for aqueous suspension and apparatus adapted thereto |
| CN102531275A (en) * | 2010-12-30 | 2012-07-04 | 上海洗霸科技股份有限公司 | Treatment process for recycling water in pulping and papermaking wastewater |
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2013
- 2013-12-13 CN CN201310677514.6A patent/CN103723808A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115741A (en) * | 1994-07-27 | 1996-01-31 | 华南师范大学 | Sewage purifying process in regenerated-paper making |
| JP2003145168A (en) * | 2001-11-07 | 2003-05-20 | Ebara Corp | Flocculation and solid-liquid separation method for aqueous suspension and apparatus adapted thereto |
| CN102531275A (en) * | 2010-12-30 | 2012-07-04 | 上海洗霸科技股份有限公司 | Treatment process for recycling water in pulping and papermaking wastewater |
Non-Patent Citations (1)
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| 王玉峰等: "造纸法烟草薄片废水混凝预处理研究", 《中国造纸》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478050A (en) * | 2014-12-01 | 2015-04-01 | 郑州大学 | Preparation method and application of modified polyferric sulfate for treating industrial wastewater |
| CN106966526A (en) * | 2017-05-03 | 2017-07-21 | 昆明理工大学 | The processing method of papermaking-method reconstituted tobaccos waste water |
| CN109052717A (en) * | 2018-08-30 | 2018-12-21 | 海南金海浆纸业有限公司 | A kind of deep treatment method of paper-making effluent |
| CN109928473A (en) * | 2019-03-08 | 2019-06-25 | 宁夏水投清水源水处理科技有限公司 | A kind of composite water purifying efficient flocculant preparation process |
| CN111689607A (en) * | 2020-06-18 | 2020-09-22 | 常州大学 | Method for chemically coagulating blue algae in lake water |
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Address after: 650106 No. 41, medical Road, hi tech Zone, Yunnan, Kunming Applicant after: Yunnan Zhongyan Reconstituted Tobacco Co., Ltd. Address before: 650106 No. 41, medical Road, hi tech Zone, Yunnan, Kunming Applicant before: Yunnan Zhongyan Kunchuan Ruisheng Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: YUNNAN ZHONGYAN KUNCHUAN RUISHENG TECHNOLOGY CO., LTD. TO: YUNNAN ZHONGYAN RECONSTITUTED TOBACCO CO., LTD. |
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Application publication date: 20140416 |