CN101333045A - Method for treating backwater in stages and recovering the backwater in production of sheet by paper-making method - Google Patents
Method for treating backwater in stages and recovering the backwater in production of sheet by paper-making method Download PDFInfo
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- CN101333045A CN101333045A CNA2007100525654A CN200710052565A CN101333045A CN 101333045 A CN101333045 A CN 101333045A CN A2007100525654 A CNA2007100525654 A CN A2007100525654A CN 200710052565 A CN200710052565 A CN 200710052565A CN 101333045 A CN101333045 A CN 101333045A
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Abstract
The invention relates to the technical field of treating the sewage from the production of tobacco sheets by a paper making method. The back water stage treatment and recycling method in the sheet production by the paper making method are as follows: the bake water under a paper machine net in a paper making working section of a production line is all treated with one stage to three stages filtration and then stored in a back water tank; according to the water quality requirements of water using, the back water in the back water tank returns to a pulping working section in grades for recycling; after being recycled in the pulping working section, the back water is filtered by a large rotary screen and recycled; after being filtered in horizontal spin and inclined spiral ways and when fiber is recycled by a microstrainer, the back water is discharged to a sewage treatment station for sewage treatment. The method of the invention has the following advantages: 1. the method can lower cost and reduce pollution; 2. the method saves a great deal of tap water; 3. the embodiment of the method is low in input cost, does not add excessive burden to companies and can save part of swage treatment cost; 4. the method is simple and easy in operation and can be widely popularized.
Description
Technical field
The present invention relates to the technical field of sewage of producing tobacco flake in method similar to papermaking, particularly the sewage of producing tobacco flake in method similar to papermaking enters stage treatment, the reuse of carrying out before the sewage plant.
Background technology
Tobacco sheet is a reconstituted tobacco, is the cigarette smoked sheet that utilizes depleted offal in the production of cigarettes, offal to produce, and mixes with other pipe tobaccos after the smoked sheet chopping, can reduce the tar content in the cigarette, reduces the Health hazard that smoking brings to human body.The use of tobacco sheet has the tobacco quality of raising, reduces the cigarette cost, saves plurality of advantages such as raw materials consumption, resource reutilization, has therefore obtained using widely.The production method of tobacco sheet mainly contains paper process, roll-in method and the method for sizing mixing, and the production method of using more tobacco sheet at present is a paper process.
The sewage that produces in the tobacco sheets by paper making method production process is the same with papermaking wastewater, contains a large amount of fibers, has tobacco sewage colourity height simultaneously, and biodegradability is relatively poor, contains characteristics such as the disadvantageous nicotine of microorganism growth, belongs to the difficult organic sewage of high density.
There are some defectives in the method that paper industry is used for reference in the sewage disposal of tobacco sheets by paper making method production.Often the part in the sewage of papermaking workshop section is sent slurrying workshop section diluted slurry to use in the paper industry, another part directly is discharged to sewage works, the sewage of slurrying workshop section directly is discharged to sewage works, carry out slurry at sewage works and reclaim, indiscriminately imitating this method is impracticable to the sewage disposal of tobacco sheets by paper making method production.Because tobacco sheet production is strict to foreign material, greasy dirt etc., forbid to sneak into the material that can produce assorted gas, influence suction flavor, therefore indiscriminately imitate the treatment process of paper industry, the fiber of recovery can only efflux.
In a word, solid content height in the sewage of tobacco sheets by paper making method production; The producing tobacco flake in method similar to papermaking water loss is big, and ton thin slice water loss (unit consumption) reaches 100m
3More than/ton the thin slice; Therefore, sewage disposal task arduousness, and processing cost height.
" backwater " of the present invention is the idiom of using paper industry, and in paper industry, it is meant that part producing sewage does not directly enter sewage works, and is back to use in the production line." backwater " in the present invention is different with " backwater " of paper industry, and " backwater " among the present invention mainly is the sewage that directly enters sewage works in order to distinguish, and so-called " backwater " is meant that part of sewage of handling and utilizing through the present invention.
Summary of the invention
Above-mentioned deficiency at prior art, the purpose of this invention is to provide backwater stage treatment, reuse method in a kind of paper process thin slice production, it can reduce water of productive use in a large number, can to greatest extent solid substance be separated, backwater water quality is had clear improvement, can be used for thin slice production, thereby alleviate the pressure of sewage disposal greatly, save processing cost.
Technical scheme of the present invention is backwater stage treatment, the reuse method during a kind of paper process thin slice is produced.The backwater that paper machine in the production line papermaking workshop section is off the net is all handled and is stored in the backwater jar to three-stage filtration by one, the backwater in the backwater jar according to the water water quality requirement classification return and carry out reuse in slurrying workshop section and the sewage disposal; Backwater after the reuse of slurrying workshop section recycles behind the great circle net filtration, the backwater after inclined screw, flat spin filter, pass through the Microfilter recycled fiber again after, be discharged to sewage works and carry out sewage disposal.
Described one the equipment of one-level filtration treatment in handling to three-stage filtration has the big cylinder and the little cylinder of 70～90 order plastic wires; The equipment that cascade filtration is handled is the band filter of band pilomotor fibers; The equipment that three-stage filtration is handled is the strainer of band backwashing function.
Solid content can be reduced to 0.3～0.2% by 0.7～0.5% before handling in the backwater that the band filter of band pilomotor fibers is handled.
Solid content can be reduced to 0.15～0.1% by 0.3～0.2% before handling in the backwater of the filter process of band backwashing function.
Described Microfilter has 70～90 order stainless steel filtering nets.
Can be reduced to 1.2～1.0% by 1.8～1.5% before handling through solid content in the backwater of Microfilter processing.
Method of the present invention has the following advantages:
1, reclaims the solid substance in the sewage (wherein being mainly fiber), reduced cost, reduced pollution.
2, quite a few water is replaced by backwater in the production process, has saved a large amount of tap water, and ton thin slice water loss (unit consumption) can be from 100m
3More than/ton the thin slice, drop to 70m
3About/ton thin slice.
3, the input cost of present method enforcement is low, not for enterprise increases too much burden, and can save the part of contaminated water processing costs.
4, present method is simple to operate, easily goes, but has generalization widely.
Description of drawings
Accompanying drawing 1 is an embodiment process flow sheet of the inventive method.
Accompanying drawing acceptance of the bid keep the score state as follows: 1-one-level filtration treatment; The big cylinder of 2-; 3-paper machine backwater off the net; The little cylinder of 4-; 5-obstructs last extraction process; The 6-pump; The 7-filter; The 8-cascade filtration is handled; The 9-three-stage filtration is handled; The 10-strainer; 11-4 backwater jar; 12-3 backwater jar; The 13-slurry; 14-starches jar; The 15-sewage works; 16-1 backwater jar; The 17-inclined screw; 18-slurrying workshop section; The 19-flat spin; 20-2 backwater jar; 21-sewage plant net blanket; The 22-Microfilter.
In the accompanying drawing: solid line-backwater flows to; Dotted line-slurry flows to; Real frame-backwater treatment scheme; The workshop section or the operation of empty frame-backwater reuse; Empty frame-to the three-stage filtration of dotted line is handled.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.It shown in the accompanying drawing 1 technical process of a specific embodiment of the present invention.In this example, whole paper machine backwater off the net is all handled to three-stage filtration through one, the equipment of one-level filtration treatment 1 has the big cylinder 2 and the roundlet net 4 of 80 order plastic wires in this example, backwater is through storing in behind big cylinder 2 and the roundlet net 4 in No. 1 backwater jar 16 and No. 2 backwater jars 20, No. 1 backwater jar 16 and No. 2 backwater jars 20 are interconnected, and the backwater of one-level filtration treatment can be back to slurrying workshop section 18.No. 2 backwater jars 20 are handled 8 equipment by water pump 6 and cascade filtration and are connected, and cascade filtration equipment is pilomotor fibers band filter 7, and what adopt in this example is that model is a CYEP-ST-1500 type pilomotor fibers band filter.It adopts directivity pilomotor fibers strainer as filtration medium, and filtration velocity is fast, can reach 65～95m
3/ h, filtering accuracy reaches 0.45mm, and separability is good, can remove suspended substance in the backwater, fiber etc., and the solid concentration in the backwater drops to 0.2% by original 0.6%.Cascade filtration is handled 8 fibers of collecting and can be returned in the slurry jar 14, the backwater of producing is stored in No. 3 backwater jars 12, backwater in No. 3 backwater jars 12 is handled 9 by pump 6 and three-stage filtration and is connected, also can supply with 18 reuses of slurrying workshop section as required, can also supply with the net blanket 21 flushing reuses of the pressure filter of sewage works 15, can a large amount of water saving.The equipment of three-stage filtration processing 9 is backwash filters 10, and this is a kind of filter plant that possesses the self-stip function.Three-stage filtration is handled 9 backwater that come out and is entered in No. 4 backwater jars 11, solid concentration in the backwater after three-stage filtration is handled further descends, drop to 0.1% by 0.2% of cascade filtration processing in this example, can satisfy the use technology requirement of stalk end extraction production process, therefore, can be used for obstructing last extraction process 5 reuses; Also can be in the net blanket 21 flushing reuses of the pressure filter of sewage works 15.The backwater that slurrying workshop section 18 produces need be through after flat spin 17 and inclined screw 19 (this two equipment is original in the prior art) processing, entering Microfilter 22 again handles, adopting model in this example is ZWN type Microfilter, Microfilter 22 adopts 80 purpose stainless steel filtering nets, filtration capacity is 50～100 tons/day, the backwater solid concentration that passes in and out this equipment drops to about 1.20% good filtration effect from 1.80%.Isolated fibre object is returned in the slurry jar 14 from Microfilter.After offal end extraction workshop section 5 in the present embodiment and slurrying workshop section 18 adopted backwater, the quality index to product did not influence after measured.Adopt present method, after tested, ton thin slice water unit consumption is reduced to 70m
3
Method of the present invention is a kind of conventional sewage plant processing sewage pre-treatment and reuse method before that be in, because the backwater of present method has all obtained rational stage treatment and grading recycle, saved water of productive use, also reduced the pressure of sewage disposal greatly, and the part fibre material in the backwater can rationally be reclaimed, present method is a kind of very economical and have a good method of actual effect.
Claims (6)
1, backwater stage treatment, reuse method during a kind of paper process thin slice is produced, it is characterized in that: the backwater that paper machine in the production line papermaking workshop section is off the net is all handled (1,8,9) and is stored in the backwater jar (16,20,11,12) to three-stage filtration by one, the backwater in the backwater jar (16,20,11,12) according to the water water quality requirement classification return in slurrying workshop section (18,5,13) and the sewage disposal and carry out reuse; Backwater after slurrying workshop section (18) reuse recycles after big cylinder (2) filters, and the backwater after inclined screw (17), flat spin (19) filter after Microfilter (22) recycled fiber, is discharged to sewage works (15) and carries out sewage disposal again.
2, backwater stage treatment, reuse method during paper process thin slice according to claim 1 is produced is characterized in that: described one the equipment of one-level filtration treatment (1) in handling to three-stage filtration has the big cylinder (2) and the little cylinder (4) of 70～90 order plastic wires; The equipment that cascade filtration is handled (8) is the band filter (7) of band pilomotor fibers; The equipment that three-stage filtration is handled (9) is the strainer (10) of band backwashing function.
3, backwater stage treatment, reuse method during paper process thin slice according to claim 2 is produced is characterized in that: solid content can be reduced to 0.3～0.2% by 0.7～0.5% before handling in the backwater that the band filter (7) of process band pilomotor fibers is handled.
4, backwater stage treatment, reuse method during paper process thin slice according to claim 2 is produced is characterized in that: solid content can be reduced to 0.15～0.1% by 0.3～0.2% before handling in the backwater that the strainer (10) of process band backwashing function is handled.
5, backwater stage treatment, reuse method during paper process thin slice according to claim 1 is produced, it is characterized in that: described Microfilter (22) has 70～90 order stainless steel filtering nets.
6, backwater stage treatment, reuse method during paper process thin slice according to claim 1 is produced is characterized in that: can be reduced to 1.2～1.0% by 1.8～1.5% before handling through solid content in the backwater of Microfilter (22) processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100525654A CN101333045B (en) | 2007-06-27 | 2007-06-27 | Method for treating backwater in stages and recovering the backwater in production of sheet by paper-making method |
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|---|---|---|---|
| CN2007100525654A CN101333045B (en) | 2007-06-27 | 2007-06-27 | Method for treating backwater in stages and recovering the backwater in production of sheet by paper-making method |
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| CN101333045A true CN101333045A (en) | 2008-12-31 |
| CN101333045B CN101333045B (en) | 2010-12-22 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531285A (en) * | 2011-12-30 | 2012-07-04 | 福建金闽再造烟叶发展有限公司 | Process for treating high-concentration organic wastewater of paper-making reconstituted tobacco |
| CN102758375A (en) * | 2012-07-31 | 2012-10-31 | 广西金桂浆纸业有限公司 | Pretreatment method of chemical-mechanical pulping effluent |
| CN103130352A (en) * | 2013-03-27 | 2013-06-05 | 成都印钞有限公司 | Size recycling process and equipment thereof |
| CN103549641A (en) * | 2013-11-14 | 2014-02-05 | 红塔烟草(集团)有限责任公司 | Purification treatment method for recycling stem washing water in paper-making reconstituted tobacco production process |
| CN104276700A (en) * | 2013-07-10 | 2015-01-14 | 上海正泽环保科技有限公司 | Process for treating high-concentration organic wastewater in tobacco sheet industry |
| CN106219826A (en) * | 2016-09-09 | 2016-12-14 | 湖北中烟工业有限责任公司 | A kind of papermaking-method reconstituted tobaccos plain boiled water staged care step reclaiming system and method |
| CN114409117A (en) * | 2022-02-10 | 2022-04-29 | 湖北中烟工业有限责任公司 | White water three-stage purification system for paper-making reconstituted tobacco and purification method thereof |
-
2007
- 2007-06-27 CN CN2007100525654A patent/CN101333045B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531285A (en) * | 2011-12-30 | 2012-07-04 | 福建金闽再造烟叶发展有限公司 | Process for treating high-concentration organic wastewater of paper-making reconstituted tobacco |
| CN102531285B (en) * | 2011-12-30 | 2013-07-17 | 福建金闽再造烟叶发展有限公司 | Process for treating high-concentration organic wastewater of paper-making reconstituted tobacco |
| CN102758375A (en) * | 2012-07-31 | 2012-10-31 | 广西金桂浆纸业有限公司 | Pretreatment method of chemical-mechanical pulping effluent |
| CN103130352A (en) * | 2013-03-27 | 2013-06-05 | 成都印钞有限公司 | Size recycling process and equipment thereof |
| CN104276700A (en) * | 2013-07-10 | 2015-01-14 | 上海正泽环保科技有限公司 | Process for treating high-concentration organic wastewater in tobacco sheet industry |
| CN103549641A (en) * | 2013-11-14 | 2014-02-05 | 红塔烟草(集团)有限责任公司 | Purification treatment method for recycling stem washing water in paper-making reconstituted tobacco production process |
| CN103549641B (en) * | 2013-11-14 | 2016-01-06 | 红塔烟草(集团)有限责任公司 | The purifying treatment method that stalk water circulation uses is washed in a kind of papermaking-method reconstituted tobaccos production process |
| CN106219826A (en) * | 2016-09-09 | 2016-12-14 | 湖北中烟工业有限责任公司 | A kind of papermaking-method reconstituted tobaccos plain boiled water staged care step reclaiming system and method |
| CN106219826B (en) * | 2016-09-09 | 2022-06-24 | 湖北中烟工业有限责任公司 | Grading treatment and cascade recycling system and method for white water of paper-making reconstituted tobacco |
| CN114409117A (en) * | 2022-02-10 | 2022-04-29 | 湖北中烟工业有限责任公司 | White water three-stage purification system for paper-making reconstituted tobacco and purification method thereof |
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|---|---|
| CN101333045B (en) | 2010-12-22 |
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Effective date of registration: 20190613 Address after: 430000 No. 1355 Jinshan Avenue, Dongxihu, Wuhan, Hubei Province Patentee after: China Tobacco Hunan Industrial Co., Ltd. Address before: 430051 Shisheng Road, Hanyang District, Wuhan City, Hubei Province Co-patentee before: Hubei Xinye Tabacco Sheet Development Co., Ltd. Patentee before: Wuhan Tobacco (Group) Co., Ltd. |
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