CN102659267B - Removing method of PVA (polyvinyl acetate) in desizing wastewater and device - Google Patents
Removing method of PVA (polyvinyl acetate) in desizing wastewater and device Download PDFInfo
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- CN102659267B CN102659267B CN 201210167050 CN201210167050A CN102659267B CN 102659267 B CN102659267 B CN 102659267B CN 201210167050 CN201210167050 CN 201210167050 CN 201210167050 A CN201210167050 A CN 201210167050A CN 102659267 B CN102659267 B CN 102659267B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229920002689 polyvinyl acetate Polymers 0.000 title abstract 11
- 239000011118 polyvinyl acetate Substances 0.000 title abstract 11
- 238000009990 desizing Methods 0.000 title abstract 5
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000007787 solid Substances 0.000 claims abstract description 41
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910021538 borax Inorganic materials 0.000 claims abstract description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 7
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 77
- 238000003860 storage Methods 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 7
- 239000007859 condensation product Substances 0.000 claims description 6
- 229940056729 sodium sulfate anhydrous Drugs 0.000 claims description 6
- 238000002156 mixing Methods 0.000 abstract description 12
- 230000004520 agglutination Effects 0.000 abstract description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 2
- 238000007599 discharging Methods 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 98
- 229920002451 polyvinyl alcohol Polymers 0.000 description 98
- 239000010865 sewage Substances 0.000 description 9
- 239000000701 coagulant Substances 0.000 description 5
- 238000010924 continuous production Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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Abstract
The invention discloses a removing method of PVA (polyvinyl acetate) desizing wastewater, which comprises the following steps: mixing PVA-containing desizing wastewater and agglomerant solution consisting of borax and anhydrous sodium sulphate; feeding the mixed desizing wastewater and agglomerant solution into a PVA agglutination reactor to react and generate a PVA solid aggregate; discharging the generated PVA solid aggregate and the solid-liquid mixture of wastewater from the PVA agglutination reactor, and feeding into a solid-liquid separator; and independently collecting the wastewater and PVA solid after the mixture is separated through the solid-liquid separator. The invention also discloses a removing device of PVA in the desizing wastewater.
Description
Technical field
The present invention relates to technical field of waste water processing, particularly relate to removal method and the device of PVA in a kind of desized wastewater.
Background technology
In field of textiles, PVA, i.e. polyvinyl alcohol is used for warp sizing in a large number, and it has, and starch finishing effect is good, good film-forming property and the good advantage of wear resisting property, is a kind of extraordinary warp sizing material.PVA is widely used in the starching of cotton fibre and chemical fibre, makes yarn finish the operation of weaving cotton cloth smoothly.But weave finish after, slurry on the cloth need fade away, therefore contain a large amount of PVA in the desized wastewater, and the biodegradability of PVA energy extreme difference, after entering Sewage treatment systems, utmost point bio-refractory is removed, and brings very big puzzlement to sewage disposal, and does not have good way to come the PVA in the desized wastewater is removed and handles as yet at present.
Summary of the invention
Based on this, at the problems referred to above, be necessary to propose removal method and the device of PVA in a kind of desized wastewater.
For solving the problems of the technologies described above, the invention provides the removal method of PVA in a kind of desized wastewater, may further comprise the steps:
The desized wastewater that contains PVA mixes with the agglutinant solution of being made up of borax, Sodium sulfate anhydrous.min(99);
Mixed desized wastewater and agglutinant solution enter the reaction of PVA agglutometer, generate PVA solid condensation product;
The PVA solid condensation product that generates and the solidliquid mixture of waste water are discharged in the PVA agglutometer, enter solid-liquid separator;
Through the waste water after the solid-liquid separator separation and the collection and treatment separately separately of PVA solid.
Agglutinant is made up of borax and Sodium sulfate anhydrous.min(99), can be effectively and the PVA in the desized wastewater chemical reaction takes place, generate the PVA solid, the PVA solid that generates by solid-liquid separator with PVA solid and liquid separation, PVA solid and waste water are collected separately respectively, after the desized wastewater of having removed PVA enters Sewage treatment systems, just alleviated the burden of sewage disposal, and this kind method efficiency ratio is higher.
Among embodiment, further comprising the steps of therein: the desized wastewater of the mixed PVA of containing reacts under the high speed shear stirring with the agglutinant solution of being made up of borax, Sodium sulfate anhydrous.min(99), and stirring velocity is 300rpm-20000rpm.Desized wastewater and coagulant solution can effectively be carried out powerful dispersing and mixing under high speed shear stirs, accelerated the speed of congealing reaction greatly.
Among embodiment, further comprising the steps of: mixed desized wastewater and agglutinant solution continue to enter the PVA agglutometer therein, and the time that stops reaction in the PVA agglutometer is 3min-120min.Purpose is to guarantee saltouing to condense and reaching good effect of PVA.By the flow velocity of control desized wastewater and coagulant solution, make mixing solutions stop 3min-120min at the PVA agglutometer, because the saltouing to condense and be not what moment finished of PVA, the time that solution stops in reactor is the time that PVA condenses.
Among embodiment, further comprising the steps of: the temperature of reaction of mixed desized wastewater and agglutinant solution is 0 ℃-100 ℃ therein.In 0 ℃-100 ℃ scope, it is the optimal reaction temperature of desized wastewater and agglutinant.
The beneficial effect of the removal method of PVA is in the desized wastewater of the present invention: method is simple, easy to operate, efficient is high, and removes the effective of PVA.
For solving the problems of the technologies described above, the present invention also provides the removal device of PVA in a kind of desized wastewater, it comprises the container for splendid attire agglutinant solution, solution mixer, PVA agglutometer and solid-liquid separator, the discharge port of described container is connected with the opening for feed of described solution mixer by first pipeline, the opening for feed of described solution mixer also is provided with second pipeline for the input desized wastewater, be equipped with flow regulator at described first pipeline and described second pipeline, the discharge port of described solution mixer is connected with the opening for feed of described PVA agglutometer, and the discharge port of described PVA agglutometer is connected with the opening for feed of described solid-liquid separator.
Desized wastewater is inserted second pipeline, agglutinant in first pipeline and the desized wastewater in second pipeline are by the control of flow regulator, enter according to corresponding ratio and to carry out powerful dispersing and mixing in the solution mixer, accelerate the carrying out of congealing reaction, mixing the mixing solutions finish in solution mixer enters and carries out saltouing of PVA in the PVA agglutometer and condense, condense when saltouing finish after, just discharge from the discharge port of PVA agglutometer, enter in the solid-liquid separator, solid-liquid separator separates the PVA solid that produces with waste water, PVA solid and waste water are collected separately respectively, have namely finished the removal process of PVA in the whole desized wastewater.
Therein among embodiment, described PVA agglutometer comprises reaction vessel, is located at the motor of the interior stirrer of reaction vessel and driving stirrer, the opening for feed of described reaction vessel is connected with the discharge port of described solution mixer, and the discharge port of described reaction vessel is connected with the opening for feed of described solid-liquid separator.Purpose is to guarantee that the reaction in the PVA agglutometer is a continuous process, thereby improves the working efficiency of whole device.
Therein among embodiment, described PVA agglutometer comprise series connection low speed reaction vessel and high speed reaction vessel, be located at the high speed shear stirrer in the high speed reaction vessel and be located at low-speed mixer in the low speed reaction vessel, the opening for feed of described high speed reaction vessel is connected with the discharge port of described solution mixer, and the discharge port of described low speed reaction vessel is connected with the opening for feed of described solid-liquid separator.Purpose is to guarantee that the reaction in the PVA agglutometer is a continuous process, thereby improves the working efficiency of whole device.
Among embodiment, described high speed reaction vessel comprises two to ten the high speed reaction vessels of series connection successively, is equipped with the high speed shear stirrer in each described high speed reaction vessel therein.Purpose is to guarantee to produce in the high speed reaction vessel non-eddy current shape to mix, and the PVA solid of generation is Powdered, the too tiny filtering separation that is unfavorable for.
Therein among embodiment, described solid-liquid separator comprises liquid storage pool, be located at the crawler-tread mechanism directly over the liquid storage pool and be located at PVA solid collection frame under the crawler-tread mechanism end, crawler belt in the described crawler-tread mechanism is provided with diameter less than the filter pore of PVA solid, described crawler-tread mechanism be located at described PVA agglutometer discharge port under.Purpose is make solid-liquid separator simple in structure, reduces cost, and guarantees the respond well of solid-liquid separator simultaneously.
Among embodiment, described solution mixer is pipeline high-shear emulsion machine or line mixer therein.Purpose is to guarantee that desized wastewater and condensing agent can carry out powerful dispersing and mixing in solution mixer.
The beneficial effect of the removal device of PVA is in the desized wastewater of the present invention: whole device simple in structure, principle of work is simple, working process is simple, respond well, low cost of manufacture, can effectively remove the PVA in the desized wastewater.
Description of drawings
Fig. 1 is the structural representation of the embodiment of removal device of PVA in the desized wastewater of the present invention;
Fig. 2 is the structural representation of another embodiment of removal device of PVA in the desized wastewater of the present invention;
Description of reference numerals:
The 101-container, 102-pipeline high-shear emulsion machine, 103-line mixer, 104-first pipeline, 105-second pipeline, 106-flow regulator, the 107-reaction vessel, 108-stirrer, 109-motor, the 110-liquid storage pool, 111-crawler-tread mechanism, 112-PVA solid collection frame, 113-high speed reaction vessel, 114-low speed reaction vessel, 115-high speed shear stirrer, 116-low-speed mixer.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated.
Method embodiment:
Referring to Fig. 1, Fig. 2, the removal method of PVA in a kind of desized wastewater may further comprise the steps:
Step 1 is collected the desized wastewater that contains PVA, and the desized wastewater that will contain PVA mixes by solution mixer with the agglutinant solution ratio of being made up of borax, Sodium sulfate anhydrous.min(99) as required.
Step 2 extracts mixed desized wastewater and agglutinant solution and enters the PVA agglutometer and react, and generates PVA solid condensation product.Wherein, the stirring velocity of the stirrer in the PVA agglutometer is adjusted into 300rpm-20000rpm, and the time that stops reaction in the PVA agglutometer is 3min-120min, 0 ℃-100 ℃ of temperature controls.
Step 3 is discharged the PVA solid condensation product of generation and the solidliquid mixture of waste water in the PVA agglutometer, enter solid-liquid separator.
Step 4 through the waste water after the solid-liquid separator separation and the collection and treatment separately separately of PVA solid, enters Sewage treatment systems with waste water.
Agglutinant is made up of borax and Sodium sulfate anhydrous.min(99), can be effectively and the PVA in the desized wastewater chemical reaction takes place, generate the PVA solid, the PVA solid that generates by solid-liquid separator with PVA solid and liquid separation, PVA solid and waste water are collected separately respectively, after the desized wastewater of having removed PVA enters Sewage treatment systems, just alleviated the burden of sewage disposal, and this kind method efficiency ratio is higher.
Device embodiment 1:
As shown in Figure 1, the removal device of PVA in a kind of desized wastewater, it comprises that for the container 101 of splendid attire agglutinant solution, solution mixer, PVA agglutometer and solid-liquid separator, described solution mixer is pipeline high-shear emulsion machine 102.The discharge port of described container 101 is connected with the opening for feed of described pipeline high-shear emulsion machine 102 by first pipeline 104, second pipeline, 105, the second pipelines 105 that the opening for feed of described pipeline high-shear emulsion machine 102 also is provided with for the input desized wastewater are connected to the desized wastewater the inside that contains PVA.Be equipped with flow regulator 106 at described first pipeline 104 with described second pipeline 105.
In the present embodiment, described PVA agglutometer comprises reaction vessel 107, be located at the stirrer 108 in the reaction vessel 107 and drive the motor 109 of stirrer 108, the opening for feed of described reaction vessel 107 is connected with the discharge port of described pipeline high-shear emulsion machine 102, and the discharge port of described reaction vessel 107 is connected with the opening for feed of described solid-liquid separator.Can guarantee that like this reaction in the PVA agglutometer is a continuous process, thereby improve the working efficiency of whole device.
In the present embodiment, described solid-liquid separator comprises liquid storage pool 110, be located at the crawler-tread mechanism 111 directly over the liquid storage pool 110 and be located at PVA solid collection frame 112 under crawler-tread mechanism 111 ends, crawler belt in the described crawler-tread mechanism 111 is provided with diameter less than the filter pore of PVA solid, being evenly distributed of filter pore.Described crawler-tread mechanism 111 be located at described reaction vessel 107 discharge port under.
The working process of the described device of above-described embodiment is as follows:
Send pipeline high-shear emulsion machine 102 to by pump flow velocity ratio on demand respectively by the desized wastewater that contains PVA of second pipeline 105 and the coagulant solution that is stored in the container 101, carrying out high speed shear mixes, mixing solutions enters in the reaction vessel 107 then, generate the mixture of PVA solid and waste water under stirrer 108 high-speed stirring of 107 li of reaction vessels, this solidliquid mixture is discharged reaction vessel 107 and is entered solid-liquid separator.The major portion of solid-liquid separator is the crawler-tread mechanism 111 with filter pore, makes the PVA solid be transmitted and enters PVA solid collection basket.The raffinate that liquid storage pool is 110 li is pumped into Sewage treatment systems.
The described device technique key of above-described embodiment is:
(1) desized wastewater and coagulant solution are carried out powerful dispersing and mixing for 102 li in the pipeline high-shear emulsion machine, accelerate the carrying out of congealing reaction greatly.
(2) flow velocity of control desized wastewater and condensing agent mixing solutions, make that mixing solutions is 3min-120min in 107 li residence time of reaction vessel, the saltouing to condense of PVA is not what moment finished, and solution is the PVA congealing reaction time in the residence time of 107 li of reaction vessels.
(3) travelling speed of stirrer 108 must be fast, be preferably in more than the 500rpm, the reason that stirring will be sought quickness is both can accelerate the PVA congealing reaction to carry out, again can be so that the PVA solid particulate that generates be littler, and solidliquid mixture is easier to be entered solid-liquid separator by pipeline and is unlikely to plugging.
Device embodiment 2:
As shown in Figure 2, the removal device of PVA in a kind of desized wastewater, it comprises that for the container 101 of splendid attire agglutinant solution, solution mixer, PVA agglutometer and solid-liquid separator, described solution mixer is line mixer 103.The discharge port of described container 101 is connected with the opening for feed of described line mixer 103 by first pipeline 104, second pipeline, 105, the second pipelines 105 that the opening for feed of described line mixer 103 also is provided with for the input desized wastewater are connected to the desized wastewater the inside that contains PVA.Be equipped with flow regulator 106 at described first pipeline 104 with described second pipeline 105.
In the present embodiment, the low speed reaction vessel 114 that described PVA agglutometer comprises series connection and high speed reaction vessel 113, be located at the high speed shear stirrer 115 in the high speed reaction vessel 113 and be located at low-speed mixer 116 in the low speed reaction vessel 114, the opening for feed of described high speed reaction vessel 113 is connected with the discharge port of described line mixer 103, and the discharge port of described low speed reaction vessel 114 is connected with the opening for feed of described solid-liquid separator.Can guarantee that the reaction in the PVA agglutometer is a continuous process, thereby improve the working efficiency of whole device.
In the present embodiment, described high speed reaction vessel 113 comprises two high speed reaction vessels 113 of series connection successively, and certainly, three to ten high speed reaction vessel 113 series connection also are fine.Be equipped with high speed shear stirrer 115 in each described high speed reaction vessel 113.Can guarantee to produce in the high speed reaction vessel 113 non-eddy current shape and mix, the PVA solid of generation is Powdered, the too tiny filtering separation that is unfavorable for.
In the present embodiment, described solid-liquid separator comprises liquid storage pool 110, be located at the crawler-tread mechanism 111 directly over the liquid storage pool 110 and be located at PVA solid collection frame 112 under crawler-tread mechanism 111 ends, crawler belt in the described crawler-tread mechanism 111 is provided with diameter less than the filter pore of PVA solid, described crawler-tread mechanism 111 be located at described low speed reaction vessel 114 discharge port under.Can make the simple in structure of solid-liquid separator, reduce cost, guarantee the respond well of solid-liquid separator simultaneously.
The described device working process of above-described embodiment is as follows:
Thrown in the line mixer 103 by pump in the certain flow rate ratio by the desized wastewater that contains PVA of second pipeline 105 and the coagulant solution that is stored in the container 101, mixing solutions enters the high speed reaction vessel 113 of series connection successively then, enter low speed reaction vessel 114 again, the solidliquid mixture that generates is discharged from low speed reaction vessel 114 and is entered into solid-liquid separator, solidliquid mixture is separated by the filter pore of crawler-tread mechanism 111, solid enters PVA solid collection frame 112, and raffinate is discharged to Sewage treatment systems after entering water reservoir again.
The key problem in technology of the described device of above-described embodiment is:
(1) Chuan Lian high speed reaction vessel is equipped with high speed shear stirrer 115 for 113 li, and the blade of high speed shear stirrer 115 produces non-eddy current shape and mixes when (rotating speed〉1000rpm) operation at a high speed, and the PVA agglutination reaction can be finished in 30min.
(2) the PVA solid that generates under 113 li high speed shear of Chuan Lian high speed reaction vessel is Powdered, cross tiny unfavorable filtering separation, therefore enter in the low speed reaction vessel 114 that stirs at a slow speed, under the stirring at a slow speed of low-speed mixer 116, Powdered PVA solid is entangled with the bigger particulate state of formation mutually, enters solid-liquid separator again and separates.
The above embodiment has only expressed the specific embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. the removal method of PVA in the desized wastewater is characterized in that, may further comprise the steps:
The desized wastewater that contains PVA mixes with the agglutinant solution of being made up of borax, Sodium sulfate anhydrous.min(99);
Mixed desized wastewater and agglutinant solution enter the reaction of PVA agglutometer, react under high speed shear stirs, and stirring velocity generates PVA solid condensation product for being 300rpm-20000rpm;
The PVA solid condensation product that generates and the solidliquid mixture of waste water are discharged in the PVA agglutometer, enter solid-liquid separator;
Through the waste water after the solid-liquid separator separation and the collection and treatment separately separately of PVA solid.
2. the removal method of PVA in the desized wastewater according to claim 1 is characterized in that, and is further comprising the steps of:
Mixed desized wastewater and agglutinant solution continue to enter the PVA agglutometer, and the time that stops reaction in the PVA agglutometer is 3min-120min.
3. the removal method of PVA in the desized wastewater according to claim 2 is characterized in that, and is further comprising the steps of:
The temperature of reaction of mixed desized wastewater and agglutinant solution is 0 ℃-100 ℃.
4. the removal device of PVA in the desized wastewater, it is characterized in that, it comprises the container for splendid attire agglutinant solution, solution mixer, PVA agglutometer and solid-liquid separator, the discharge port of described container is connected with the opening for feed of described solution mixer by first pipeline, the opening for feed of described solution mixer also is provided with second pipeline for the input desized wastewater, be equipped with flow regulator at described first pipeline and described second pipeline, the discharge port of described solution mixer is connected with the opening for feed of described PVA agglutometer, and the discharge port of described PVA agglutometer is connected with the opening for feed of described solid-liquid separator.
5. the removal device of PVA in the desized wastewater according to claim 4, it is characterized in that, described PVA agglutometer comprises reaction vessel, is located at the motor of the interior stirrer of reaction vessel and driving stirrer, the opening for feed of described reaction vessel is connected with the discharge port of described solution mixer, and the discharge port of described reaction vessel is connected with the opening for feed of described solid-liquid separator.
6. the removal device of PVA in the desized wastewater according to claim 4, it is characterized in that, described PVA agglutometer comprise series connection low speed reaction vessel and high speed reaction vessel, be located at the high speed shear stirrer in the high speed reaction vessel and be located at low-speed mixer in the low speed reaction vessel, the opening for feed of described high speed reaction vessel is connected with the discharge port of described solution mixer, and the discharge port of described low speed reaction vessel is connected with the opening for feed of described solid-liquid separator.
7. the removal device of PVA in the desized wastewater according to claim 6 is characterized in that, described high speed reaction vessel comprises two to ten the high speed reaction vessels of series connection successively, is equipped with the high speed shear stirrer in each described high speed reaction vessel.
8. the removal device of PVA in the desized wastewater according to claim 4, it is characterized in that, described solid-liquid separator comprises liquid storage pool, be located at the crawler-tread mechanism directly over the liquid storage pool and be located at PVA solid collection frame under the crawler-tread mechanism end, crawler belt in the described crawler-tread mechanism is provided with diameter less than the filter pore of PVA solid, described crawler-tread mechanism be located at described PVA agglutometer discharge port under.
9. according to the removal device of PVA in each described desized wastewater in the claim 4 to 8, it is characterized in that described solution mixer is pipeline high-shear emulsion machine or line mixer.
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| CN102887577A (en) * | 2012-09-25 | 2013-01-23 | 江苏红旗印染机械有限公司 | System for recycling PVA (Polyvinyl Alcohol) slurry from printing and dyeing wastewater and desizing wastewater |
| CN105174548A (en) * | 2015-09-25 | 2015-12-23 | 鲁泰纺织股份有限公司 | Method for treating PVA containing desizing waste water |
| CN105948196A (en) * | 2016-05-05 | 2016-09-21 | 杭州博天环保科技有限公司 | Water-soluble cloth dissolution wastewater combination equipment and pretreatment process |
| TWI758546B (en) * | 2017-10-02 | 2022-03-21 | 日商住友化學股份有限公司 | Method for manufacturing a polyvinyl alcohol-based resin film |
| JP7260266B2 (en) * | 2017-10-02 | 2023-04-18 | 住友化学株式会社 | Polarizing film manufacturing equipment |
| CN108409022A (en) * | 2018-05-16 | 2018-08-17 | 泊头市大华环保工程有限公司 | Desized wastewater processing method containing PVA and processing system |
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| CN1699211A (en) * | 2005-05-11 | 2005-11-23 | 江南大学 | Clean Textile Production Process Using Advanced Oxidation to Decompose Polyvinyl Alcohol Sizing for Textiles |
| CN202643398U (en) * | 2012-05-25 | 2013-01-02 | 广东溢达纺织有限公司 | Eliminating device for polyvinyl alcohol (PVA) in desizing wastewater |
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