CN103549641A - Purification treatment method for recycling stem washing water in paper-making reconstituted tobacco production process - Google Patents
Purification treatment method for recycling stem washing water in paper-making reconstituted tobacco production process Download PDFInfo
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- CN103549641A CN103549641A CN201310564760.0A CN201310564760A CN103549641A CN 103549641 A CN103549641 A CN 103549641A CN 201310564760 A CN201310564760 A CN 201310564760A CN 103549641 A CN103549641 A CN 103549641A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 241000208125 Nicotiana Species 0.000 title claims abstract description 59
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000005406 washing Methods 0.000 title claims abstract description 20
- 238000000746 purification Methods 0.000 title abstract description 4
- 238000004064 recycling Methods 0.000 title abstract 3
- 238000000926 separation method Methods 0.000 claims abstract description 46
- 239000012528 membrane Substances 0.000 claims abstract description 45
- 239000012530 fluid Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 22
- 229920001277 pectin Polymers 0.000 claims abstract description 15
- 235000010987 pectin Nutrition 0.000 claims abstract description 15
- 239000001814 pectin Substances 0.000 claims abstract description 15
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 229920002521 macromolecule Polymers 0.000 claims abstract description 10
- 239000000049 pigment Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000008213 purified water Substances 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 21
- 150000001720 carbohydrates Chemical class 0.000 claims description 8
- 108010010803 Gelatin Proteins 0.000 claims description 6
- 229920000159 gelatin Polymers 0.000 claims description 6
- 239000008273 gelatin Substances 0.000 claims description 6
- 235000019322 gelatine Nutrition 0.000 claims description 6
- 235000011852 gelatine desserts Nutrition 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 238000004537 pulping Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 17
- 239000000706 filtrate Substances 0.000 abstract description 5
- 235000000346 sugar Nutrition 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 11
- 235000014633 carbohydrates Nutrition 0.000 description 10
- 239000000725 suspension Substances 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 6
- 241000370738 Chlorion Species 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000000855 fermentation Methods 0.000 description 4
- 230000004151 fermentation Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 large molecule carbohydrate Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- AEMOLEFTQBMNLQ-YMDCURPLSA-N D-galactopyranuronic acid Chemical compound OC1O[C@H](C(O)=O)[C@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-YMDCURPLSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 description 1
- NMLQNVRHVSWEGS-UHFFFAOYSA-N [Cl].[K] Chemical compound [Cl].[K] NMLQNVRHVSWEGS-UHFFFAOYSA-N 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011285 coke tar Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Paper (AREA)
Abstract
The invention discloses a purification treatment method for recycling stem washing water in a paper-making reconstituted tobacco production process. The stem washing water after washing a tobacco stem raw material in the paper-making reconstituted tobacco production process is purified by a membrane separation technology to meet technical requirements on the stem washing water. The method is characterized by comprising the steps of filtering the stem washing water with a rectangular screen, importing filtrate into a ceramic membrane separation system to remove macromolecular substances such as pectin and sugar, obtaining dialysate and trapped fluid, importing the dialysate into a reverse osmosis membrane system to remove pigments and salt substances, and obtaining purified water and concentrated water. The purified water can directly enter a stem washing water system for recycling. The method solves the problems that massive emission of the stem washing water pollutes an environment, a utilization rate of production water is low, and the new water consumption is high in the prior art.
Description
Technical field
The invention discloses in a kind of papermaking-method reconstituted tobaccos production process and wash the purifying treatment method that stalk water circulation is used, particularly relate to the purifying treatment method of washing the use of stalk water circulation in papermaking-method reconstituted tobaccos production process.Belong to papermaking-method reconstituted tobaccos production technology process field.
Background technology
At present, production of cigarettes has been different from traditional production method, its feature is exactly in natural pipe tobacco, to add the pipe tobacco of a certain proportion of reconstituted tobacco, to improve tobacco components, Jiao falls, consumption reduction has a good effect, can also enrich the resource of cigarette composition, be applicable to the exploitation of polytype cigarette product.The production of reconstituted tobacco comprises roll-in method, thick slurry method and paper process, and wherein papermaking-method reconstituted tobaccos production technology is the up-to-date the most conventional production technology of current enterprise.
It is to take tobacco leaf fragment, offal and offal as primary raw material that papermaking-method reconstituted tobaccos is produced, slurrying in extracting technology and paper technology in integrated application chemical and medicine industry technology, the critical process such as manufacture paper with pulp, and take machinery and physical method to process to have the reconstituted tobacco of similar Redried lamina physical parameter and moisture content etc.There is lack of raw materials has become the production production capacity of restriction papermaking-method reconstituted tobaccos, and manufacture reconstituted tobacco, is the main mode of offal higher value application, and the consumption of offal accounts for 50% left and right of reconstituted tobacco total amount conventionally.Offal accounts for 1/3rd of tobacco leaf gross weight, and these tobacco stalk raw materials are produced for reconstituted tobacco, for reducing tobacco material waste, saves the cultivated area for planting tobacco, reduces production costs and all has important practical significance.But for offal, being different from tobacco leaf, wherein containing the exogenous materials such as the materials such as a large amount of pectin, large molecule carbohydrate, chlorion and pigment and dust, metal, there is organoleptic quality and the production safety that can affect reconstituted tobacco in these materials.In offal, total pectin content is conventionally between 8-12%, main body composition is the polymer substance that galacturonic acid is aggregating by glycosidic bond, a large amount of pectin existence can make the reconstituted tobacco of producing burn and suck not exclusively, and produce the penetrating odors such as methyl alcohol, acetic acid, unfavorable to cigarette odor-absorbing and security; When directly extracting, offal contains more carbohydrate in extract, break tobacco desired sugars alkali and compared balance, and the tar content that carbohydrate produces in combustion process is large, thereby reduced the function that reconstituted tobacco reduces releasing content of coke tar in cigarette composition, the reconstituted tobacco that causes this method to make exists jealous inferior quality, assorted gas heavily etc. to inhale taste defect, has affected result of use and the addition of reconstituted tobacco in cigarette industry product.Due to growing environment factor, in offal, contain a large amount of chlorion materials, and the existence of chlorion, make in reconstituted tobacco chloride ion content too high, destroy potassium chlorine ratio wherein, be unfavorable for the burning velocity of reconstituted tobacco, simultaneously, reconstituted tobacco chloride ion content exceeds standard, and can not meet State Bureau's 0.8% upper limit requirement.Exogenous material is mainly due to the modes such as tobacco leaf harvesting, transportation.
In existing public technology, as reducing by mono-kind of the materials such as pectin in offal extract and patent 201210230744.3 < < by enzyme degraded mode, the treatment process > > of patent 201110194762.6 < < stem extracting solutions utilize the auxiliary method > > that reduces pectin content in offal of microwave to adopt microwave technology to reduce wherein pectin content etc., but consider operating cost and reality factor, the producing feasibility of these technologies has limitation.Papermaking-method reconstituted tobaccos manufacturing enterprise directly carries out tap water heating immersion to offal at present, according to " one washes Liang Pao " mode, wash stalk, after extracting dehydration, enter extraction workshop section, this method has reduced material and the exogenous materials such as the pectin in offal, large molecule carbohydrate, chlorion and pigment preferably again.But washing stalk water directly discharges, nutritiousization of Xi Geng Shuifu County that wherein contains the materials such as a large amount of pectin, large molecule carbohydrate, chlorion and pigment increased cost of sewage disposal, on the other hand, increased production process water water and product ton water consumption, be also unfavorable for ton product water consumption requirement and fall the principle that can subtract consumption.
Summary of the invention
Object of the present invention is intended to overcome prior art deficiency, invent one and can solve problem when stalk water is satisfied to be recycled of washing that in papermaking-method reconstituted tobaccos production, tobacco stalk raw material obtains after washing, wash in a large number the discharge of stalk water to environment and cost of sewage disposal, the utilization rate of while reconstituted tobacco production process water, the large shortcoming of ton product water consumption.The invention solves a large amount of discharges of prior art and wash stalk water to environment, industrial water utilization rate is low and new water consumption is large problem, wash after stalk Shui Jing bis-road film separation system purified treatment, can meet completely to wash and obstruct the specification requirement that water recycles.
The technical solution adopted for the present invention to solve the technical problems step is: in a kind of papermaking-method reconstituted tobaccos production process, wash the purifying treatment method that stalk water circulation is used, it is characterized in that: comprise following processing step:
(1) what tobacco stalk raw material in papermaking-method reconstituted tobaccos production process is obtained after hot tap-water washing, purifying washes stalk water, directly sending into 60-80 order rectangular mesh screen device carries out tentatively filtering and obtaining filtered fluid, collect to filter and hold back material, it is mainly dust, metal object and offal crude fibre etc.;
(2) step (1) filtered fluid is imported to ceramic membrane separation system and carry out separation, at the running parameter of setting, implement to wash the film separation of stalk water, the trapped fluid that obtains dislysate and contain the macromolecular substances such as solid insoluble, pectin wind gelatin substance, carbohydrate;
(3) dislysate in step (2) is imported in reverse osmosis membrane separation system, select suitable reverse osmosis membrane and setting running parameter to implement the further film of dislysate separated, the condensed water that is purified water and contains pigment, salts substances etc.;
(4) filtration in step (1) is held back to material and after removal of impurities, directly enters pulping system and process, and 2) and 3) in through film separation system, process the trapped fluid obtaining and condensed water adopts microorganism to ferment or the mode of biochemical treatment is processed.
Described step 2) in, membrane component-tubular membrane core of ceramic membrane separation system adopts the film core that aperture is 20-250nm, and operating pressure is 0.2-0.5MPa, and working flow rate is 5-10m/s, and feed temperature does not carry out film separation higher than working under the running parameter of 80 ℃.
In described step 3), reverse osmosis membrane separation system adopts rolling RO-SG film, operating pressure 2-6MPa, and working flow rate is to carry out film separation under the running parameter of 5-10 m/s.
Beneficial effect of the present invention: the present invention efficiently solves a difficult problem of washing stalk purifying water process in papermaking-method reconstituted tobaccos production process; wash the stalk water purification rate of recovery and reach 80-90%; improve the utilization rate of reconstituted tobacco industrial water, reduced quantity of wastewater effluent when reconstituted tobacco is produced and the protection that has improved environment and water resource.Meanwhile, membrane separation technique belongs to without covert isolation technics for washing stalk water purification isolation technics, and not only its energy consumption is low, good separating effect, and is easy to automation control and management, reduces human cost, and treatment effect is stable.
The specific embodiment
Below the specific embodiment of the present invention and Relational Questions are described in further detail, but are not limited to embodiment.
What 1. tobacco stalk raw material in papermaking-method reconstituted tobaccos production process is obtained after hot tap-water washing, purifying washes stalk water, directly imports 60-80 order rectangular mesh screen device and carries out preliminary filtration and obtain preliminary filtered fluid, collects filtrate and holds back material.
2. 1. filtered fluid importing ceramic membrane separation system is carried out separation, and the film of washing stalk water in the running parameter enforcement of setting is separated, obtains dislysate and the trapped fluid (dense water) that contains the macromolecular substances such as solid insoluble, pectin wind gelatin substance, carbohydrate.
3. the dislysate in is 2. imported in reverse osmosis membrane separation system, select suitable reverse osmosis membrane and set running parameter that to implement the further film of dislysate separated, the condensed water that is purified water and contains pigment, salts substances etc.
Technique scheme is washed stalk water through filter the trapped substance obtaining through 80 order rectangular mesh screens, and after removal of impurities, tobacco stalk fibre directly enters pulping system.
Technique scheme is processed through film separation system the trapped fluid and the condensed water that obtain and is adopted the mode of microorganism fermentation or biochemical treatment to process.
Membrane component-tubular membrane core of the ceramic membrane separation system of technique scheme adopts the film core that aperture is 20-250nm, and operating pressure is 0.2-0.5MPa, and working flow rate is 5-10m/s, and feed temperature does not carry out film separation higher than working under the running parameter of 80 ℃.
The reverse osmosis membrane separation system of technique scheme adopts tubular membrane RO-SG film, operating pressure 1-6MPa, and working flow rate is to carry out film separation under the running parameter of 5-10 m/s.
Technique scheme wash that stalk water obtains after by two road membrane separation technique purified treatment purify waste water can meet completely papermaking-method reconstituted tobaccos produce in the specification requirement of tobacco stalk raw material slurry.
embodiment 1
1. in papermaking-method reconstituted tobaccos production line, get and wash stalk water at random, colourity, electrical conductivity, pH, the COD (COD that washes stalk water measured in the censorship that keeps sample
cr), bod (BOD
5), the physical and chemical index such as suspension (SS).
2. will wash stalk water importing 60-80 order rectangular mesh screen device and carry out tentatively filtering and obtaining preliminary filtered fluid, and collect filtrate and hold back material.
3. filtered fluid 20kg in 2 is imported to ceramic membrane separation system and carry out separation, adopt membrane component-tubular membrane core to adopt the film core that aperture is 200nm, operating pressure is 0.2-0.5MPa, working flow rate is 5-10m/s, feed temperature, not higher than working and carry out film separation under the running parameter of 80 ℃, obtains dislysate 18.51kg and trapped fluid (dense water) 1.52kg that contains the macromolecular substances such as solid insoluble, pectin wind gelatin substance, carbohydrate.Dislysate yield is 92.55%.
4. the dislysate 18kg in 3 is imported in reverse osmosis membrane separation system, adopt tubular membrane RO-SG film, operating pressure 1-6MPa, working flow rate is that under the running parameter of 5-10 m/s, further to carry out dislysate membrane technology separated, the condensed water 1.6kg that is purified water 16.4kg and contains pigment, salts substances etc.The yield of purifying waste water is 91.11%.
5. the filtration in 2 is held back to material and after removal of impurities, directly enter pulping system processing, and process through film separation system the trapped fluid and the condensed water that obtain in 3,4, adopt the mode of microorganism fermentation or biochemical treatment to process.
By the above-mentioned censorship of purifying waste water obtaining by the technology of the present invention, detect purify waste water colourity, electrical conductivity, pH, COD
cr, BOD
5, the physical and chemical index such as SS.
embodiment 2
1. in papermaking-method reconstituted tobaccos production line, get and wash stalk water at random, colourity, electrical conductivity, pH, the COD that washes stalk water measured in the censorship that keeps sample
cr, BOD
5, the physical and chemical index such as SS.
2. will wash stalk water importing 60-80 order rectangular mesh screen device and carry out tentatively filtering and obtaining preliminary filtered fluid, and collect filtrate and hold back material.
3. filtered fluid 20kg in 2 is imported to ceramic membrane separation system and carry out separation, adopt membrane component-tubular membrane core to adopt the film core that aperture is 50nm, operating pressure is 0.2-0.5MPa, working flow rate is 5-10m/s, feed temperature, not higher than working and carry out film separation under the running parameter of 80 ℃, obtains dislysate 18.62k and trapped fluid (dense water) 1.4kg that contains the macromolecular substances such as solid insoluble, pectin wind gelatin substance, carbohydrate.Dislysate yield is 93.1%.
4. the dislysate 15kg in 3 is imported in reverse osmosis membrane separation system, adopt tubular membrane RO-SG film, operating pressure 1-6MPa, working flow rate is that under the running parameter of 5-10 m/s, further to carry out dislysate membrane technology separated, the condensed water 1.11k that is purified water 13.89kg and contains pigment, salts substances etc.The yield of purifying waste water is 92.6%.
5. the filtration in 2 is held back to material and after removal of impurities, directly enter pulping system processing, and process through film separation system the trapped fluid and the condensed water that obtain in 3,4, adopt the mode of microorganism fermentation or biochemical treatment to process.
By the above-mentioned censorship of purifying waste water obtaining by the technology of the present invention, detect purify waste water colourity, electrical conductivity, pH, COD
cr, BOD
5, the physical and chemical index such as SS.
embodiment 3
1. in papermaking-method reconstituted tobaccos production line, get and wash stalk water at random, colourity, electrical conductivity, pH, the COD that washes stalk water measured in the censorship that keeps sample
cr, BOD
5, the physical and chemical index such as SS.
2. will wash stalk water importing 60-80 order rectangular mesh screen device and carry out tentatively filtering and obtaining preliminary filtered fluid, and collect filtrate and hold back material.
3. filtered fluid 20kg in 2 is imported to ceramic membrane separation system and carry out separation, adopt membrane component-tubular membrane core to adopt the film core that aperture is 25nm, operating pressure is 0.2-0.5MPa, working flow rate is 5-10m/s, feed temperature, not higher than working and carry out film separation under the running parameter of 80 ℃, obtains dislysate 18.85kg and trapped fluid (dense water) 1.2kg that contains the macromolecular substances such as solid insoluble, pectin wind gelatin substance, carbohydrate.Dislysate yield is 94.25%.
4. the dislysate 15kg in 3 is imported in reverse osmosis membrane separation system, adopt tubular membrane RO-SG film, operating pressure 1-6MPa, working flow rate is that under the running parameter of 5-10m/s, further to carry out dislysate membrane technology separated, the condensed water 1.1k that is purified water 13.91kg and contains pigment, salts substances etc.The yield of purifying waste water is 92.73%.
5. the filtration in 2 is held back to material and after removal of impurities, directly enter pulping system processing, and process through film separation system the trapped fluid and the condensed water that obtain in 3,4, adopt the mode of microorganism fermentation or biochemical treatment to process.
By the above-mentioned censorship of purifying waste water obtaining by the technology of the present invention, detect purify waste water colourity, electrical conductivity, pH, COD
cr, BOD
5, the physical and chemical index such as SS.
Be below that the water sample of three embodiment is carried out to water sample water analysis, and testing result gathers in following table:
Claims (3)
1. in papermaking-method reconstituted tobaccos production process, wash the purifying treatment method that stalk water circulation is used, it is characterized in that: comprise following processing step:
(1) what tobacco stalk raw material in papermaking-method reconstituted tobaccos production process is obtained after hot tap-water washing, purifying washes stalk water, directly sending into 60-80 order rectangular mesh screen device carries out tentatively filtering and obtaining filtered fluid, collect to filter and hold back material, it is mainly dust, metal object and offal crude fibre etc.;
(2) step (1) filtered fluid is imported to ceramic membrane separation system and carry out separation, at the running parameter of setting, implement to wash the film separation of stalk water, the trapped fluid that obtains dislysate and contain the macromolecular substances such as solid insoluble, pectin wind gelatin substance, carbohydrate;
(3) dislysate in step (2) is imported in reverse osmosis membrane separation system, select suitable reverse osmosis membrane and setting running parameter to implement the further film of dislysate separated, the condensed water that is purified water and contains pigment, salts substances etc.;
(4) filtration in step (1) is held back to material and after removal of impurities, directly enters pulping system and process, and 2) and 3) in through film separation system, process the trapped fluid obtaining and condensed water adopts microorganism to ferment or the mode of biochemical treatment is processed.
2. according to the purifying treatment method of washing the use of stalk water circulation in papermaking-method reconstituted tobaccos production process claimed in claim 1, it is characterized in that: described step 2), membrane component-tubular membrane core of ceramic membrane separation system adopts the film core that aperture is 20-250nm, operating pressure is 0.2-0.5MPa, working flow rate is 5-10m/s, and feed temperature does not carry out film separation higher than working under the running parameter of 80 ℃.
3. according to the purifying treatment method of washing the use of stalk water circulation in papermaking-method reconstituted tobaccos production process claimed in claim 1, it is characterized in that: in described step 3), reverse osmosis membrane separation system adopts rolling RO-SG film, operating pressure 2-6MPa, working flow rate is to carry out film separation under the running parameter of 5-10 m/s.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117326731A (en) * | 2023-09-28 | 2024-01-02 | 河南卷烟工业烟草薄片有限公司 | Enrichment and separation method for flavor components in reconstituted tobacco production wastewater |
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| CN101327967A (en) * | 2008-07-29 | 2008-12-24 | 南京工业大学 | Membrane lake water purification process and its device |
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| CN101805077A (en) * | 2010-04-29 | 2010-08-18 | 广东省金叶烟草薄片技术开发有限公司 | Treating method of paper-making water recycling use in the production process of reconstituted tobacco |
| CN102240066A (en) * | 2010-05-12 | 2011-11-16 | 湖北中烟工业有限责任公司 | Return water control process for improving visual purity of slices by paper making method |
| CN102423106A (en) * | 2011-09-29 | 2012-04-25 | 张晓军 | Tobacco leaf pretreatment method in tobacco shred production process |
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| CN102515395A (en) * | 2011-12-30 | 2012-06-27 | 北京清大膜科膜技术有限公司 | Method and device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater |
| CN103241912A (en) * | 2013-05-31 | 2013-08-14 | 波鹰(厦门)科技有限公司 | A kind of treatment method of tobacco flake production waste water |
| CN103351088A (en) * | 2013-08-08 | 2013-10-16 | 波鹰(厦门)科技有限公司 | Treatment and regenerative cyclic utilization device for tobacco sheet production wastewater |
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| CN117326731A (en) * | 2023-09-28 | 2024-01-02 | 河南卷烟工业烟草薄片有限公司 | Enrichment and separation method for flavor components in reconstituted tobacco production wastewater |
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