CN107459122A - Short fiber acidic water recycling process - Google Patents
Short fiber acidic water recycling process Download PDFInfo
- Publication number
- CN107459122A CN107459122A CN201710691228.3A CN201710691228A CN107459122A CN 107459122 A CN107459122 A CN 107459122A CN 201710691228 A CN201710691228 A CN 201710691228A CN 107459122 A CN107459122 A CN 107459122A
- Authority
- CN
- China
- Prior art keywords
- acid
- station
- water
- desulfurization
- passed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000002378 acidificating effect Effects 0.000 title abstract description 5
- 238000004064 recycling Methods 0.000 title abstract 3
- 239000002253 acid Substances 0.000 claims abstract description 71
- 239000002351 wastewater Substances 0.000 claims abstract description 59
- 238000005406 washing Methods 0.000 claims abstract description 31
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 30
- 230000023556 desulfurization Effects 0.000 claims abstract description 30
- 239000008234 soft water Substances 0.000 claims abstract description 13
- 229920000297 Rayon Polymers 0.000 abstract description 6
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000007380 fibre production Methods 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 7
- 239000003292 glue Substances 0.000 description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000004061 bleaching Methods 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000007832 Na2SO4 Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a process for recycling short fiber acid water, and belongs to the technical field of viscose short fiber production. The short fiber acidic water recycling process comprises the following steps: and introducing the multi-effect wastewater of the acid station and the acidic wastewater of the rinsing bath into a rinsing station at the rear end of the desulfurization station, and washing the fibers desulfurized by the desulfurization station, wherein the pH value of the washed fibers is 8.0-11.0. The invention mainly solves the technical problems that the fiber after desulfurization bath needs to be washed by soft water, so that water resource waste is caused, and a large amount of sewage is generated in the prior art. The invention has the advantages of reducing the cost of wastewater treatment and reducing pollution.
Description
Technical field
The present invention relates to a kind of Sewage treatment to utilize technique, more particularly to a kind of short acid water recovering process of fibre, belongs to viscous
The short fine production technical field of glue.
Background technology
Viscose glue after chemical reaction in acid bath generates fiber, and after fiberizing, substantial amounts of acid bath returns to acid station through excessive
Evaporator is imitated, steam indirectly heat evaporates water unnecessary in acid bath, and separates out sodium sulphate, then one kind will be produced during this
Acid multiple-effect water waste water containing certain density sulfuric acid.
After viscose glue is molded in acid bath, tow surface adhesion has more acid bath, and tow enters rinsing bowl entrainment of acid bath
Washed, have to last for constantly supplementing clean water in rinsing bowl, and overflow the acid waste water under washing, it is flat so as to reach dynamic
Weighing apparatus.The process produces substantial amounts of acid waste water.
In addition, in desulfurization station, the composition of desulfurization bath for NaOH or（NaOH+Na2S）, the fiber pH value after desulfurization exists
Between 12.0-14.0, the process after desulfurization is fiber bleached, and the pH value bleached needs to control between 8.5-10.5, therefore de-
The process of a washing is additionally provided between sulphur and bleaching, it is necessary to clean the alkali on fiber with the soft water of certain flow, makes it full
PH value needed for foot bleaching, although so washing can realize the purpose for reducing pH value, and fiber will not be secondarily contaminated,
It is that can waste substantial amounts of water, and wastewater discharge increase, it is unfavorable for environmental protection.
The processing mode of above two acid water in the prior art, the first is discharged at sewage treatment plant
Reason, although may carry out environment protection emission after processing, the waste of resource can be caused, it is not easy to reduce production cost；Second
Kind mode is recycled again for the acid water in rinsing bowl out, reclaims part material therein：Sulfuric acid, zinc sulfate
And sodium sulphate, and recycled and the acid bath process of spinning.Such as Publication No. CN106865833A, entitled " one kind is viscous
The patent of invention of the electrodialytic membranes recovery process of acid waste water in glue fiber spinning ", recovery process disclosed in the patent include A,
The pretreatment of low concentration acid waste water；B, acid bath pre-processes after spinning；Electrodialytic membranes component is set C,；D, acid bath is entered after spinning
Enter electrodialytic membranes component；E, ion-transfer；F, acid bath reuse.The processing mode of the patent is after being pre-processed to acid water,
After electrodialysis process, then carry out reuse.
Although the processing method of above-mentioned patent can get up the fractions recovery in acid water, it is re-used for producing,
But do not solve the problems, such as the waste water of strand cleaning discharge after desulfurization simultaneously.
The content of the invention
Present invention seek to address that the desulfurization bath after prior art desulfurization on strand needs to be cleaned with soft water, water consumption is caused
Greatly, wastewater discharge is big, not environmentally friendly enough technical problem, there is provided a kind of new short acid water recovering process of fibre, by by viscose glue
Acid water and desulfurization bath wastewater treatment in production process are combined, and are greatlyd save cost for wastewater treatment, are reduced environmental pollution,
So as to improve the economic and social benefits.
In order to realize foregoing invention purpose, technical scheme is as follows：
A kind of short acid water recovering process of fibre, it is characterised in that：Step is as follows：By the multi-effect wastewater at acid station and the acidity of rinsing bowl
Waste water is passed through the washing station of desulfurization station rear end, and the fiber through the desulfurization of desulfurization station is washed, and the fiber pH value after washing is 8.5
~10.5.
Above-mentioned multi-effect wastewater and the main component of acid waste water are H2SO4；What the acid in the alkali and waste water of desulfurization bath occurred
Key reaction is as follows:
2NaOH+H2SO4=Na2SO4+2H2O；Na2S+H2SO4=Na2SO4+H2S。
In order to which the present invention is better achieved, in of the invention, the pH value of the multi-effect wastewater is 1.0~3.0.
In the present invention, the flow that the multi-effect wastewater is passed through washing station is 40~50m3/h。
In the present invention, the temperature when multi-effect wastewater is passed through is 20~40 DEG C.
In the present invention, the pH value of the acid waste water is 2.0~4.0.
In the present invention, the flow that the acid waste water is passed through is 15~20m3/h。
In the present invention, the temperature when acid waste water is passed through is 20~40 DEG C.
In the present invention, the washing station has also been passed through 0~10 m3/ h soft water.
Beneficial effects of the present invention：
（1）The present invention after acid bath in viscose glue production process and acid bath by that acid waste water caused by two processes of washing will be passed into
In washing station, to being handled with the strand that desulfurization is bathed, the acid in alkali and acid waste water in desulfurization bath, soda acid occurs in the two
Neutralization reaction, so that the strand after having handled meets the pH value needed for bleaching, while so as to handle acid waste water,
Desulfurization bath on strand is neutralized, and pH value governing speed is fast, avoids and is washed again with soft water, it is achieved thereby that drop
Low cost for wastewater treatment, reduce environmental pollution, the production cost for reducing viscose glue truly, there is higher economy
Benefit and social benefit.
（2）Preferably, the pH value of the multi-effect wastewater of the present invention is 1.0~3.0, the pH value of acid waste water for 2.0~
4.0；Further preferably, the flow for being passed through washing station is 40~50m3/ h, the flow that acid waste water is passed through are 15~20m3/ h, lead to
The multi-effect wastewater and acid waste water to certain ph are crossed, control is specifically passed through flow, quickly to reduce the pH value of strand
To 8.5~10.5 required by bleaching, to avoid also adjusting pH value by adding soft water, increase workload,
Influence production efficiency.
（3）Preferably, temperature when multi-effect wastewater and acid waste water are passed through in the present invention is 20~40 DEG C, in the temperature
In the range of, the effect of washing is more preferable.
（4）Preferably, in the present invention, washing station has also been passed through 0~10 m3/ h soft water, the multi-effect wastewater at acid station
With the spent acidic water of rinsing bowl it is inadequate when, can be washed by adding soft water, so as to reduce pH value.
Brief description of the drawings
Fig. 1 is the process flow diagram of the embodiment of the present invention 1；
Fig. 2 is the process flow diagram of the embodiment of the present invention 2~3.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Embodiment 1
A kind of short acid water recovering process of fibre, step are as follows：The multi-effect wastewater at acid station will be returned and the acid waste water of rinsing bowl is passed through
The washing station of desulfurization station rear end, is washed to the fiber through the desulfurization of desulfurization station, and the fiber pH value satisfaction 8.5 after washing~
10.5 as shown in Figure 1.
Embodiment 2
A kind of short acid water recovering process of fibre, step are as follows：The multi-effect wastewater at acid station will be returned and the acid waste water of rinsing bowl is passed through
The washing station of desulfurization station rear end, is washed to the fiber through the desulfurization of desulfurization station.
The pH value of the multi-effect wastewater of the present embodiment is 1.0；The flow that multi-effect wastewater is passed through washing station is 40m3/ h, multiple-effect are given up
Temperature when water is passed through is 20 DEG C.
Acid waste water pH value in the present embodiment is 2.0；The flow that multi-effect wastewater is passed through washing station is 15m3/ h, multiple-effect are given up
Temperature when water is passed through is 20 DEG C.
Fiber pH value after the present embodiment washing meets 8.5~10.5.Process chart is as shown in Figure 1.
PH value is 3.0；The flow that multi-effect wastewater is passed through washing station is 15m3/ h, temperature when multi-effect wastewater is passed through are 40
℃。
Fiber pH value after the present embodiment washing is unsatisfactory for 8.5~10.5, is washed with soft water, until the pH value of fiber
8.5~10.5.Process chart is as shown in Figure 2.
Preferably, temperature when multi-effect wastewater and acid waste water are passed through in the present embodiment is 20~40 DEG C, in the temperature
In the range of, the effect of washing is more preferable.
Preferably, washing station has also been passed through 0~10 m in the present embodiment3/ h soft water, acid station multi-effect wastewater and
When the spent acidic water of rinsing bowl is inadequate, it can be washed by adding soft water, so as to reduce pH value.
Embodiment 3
A kind of short acid water recovering process of fibre, step are as follows：The multi-effect wastewater at acid station will be returned and the acid waste water of rinsing bowl is passed through
The washing station of desulfurization station rear end, is washed to the fiber through the desulfurization of desulfurization station.
The pH value of the multi-effect wastewater of the present embodiment is 3.0；The flow that multi-effect wastewater is passed through washing station is 40m3/ h, multiple-effect are given up
Temperature when water is passed through is 40 DEG C.
Acid waste water pH value in the present embodiment is 4.0；The flow that multi-effect wastewater is passed through washing station is 18m3/ h, multiple-effect are given up
Temperature when water is passed through is 20 DEG C.
Fiber pH value after the present embodiment washing is unsatisfactory for 8.5~10.5, is washed with soft water, until the pH value of fiber
8.5~10.5.Process chart is as shown in Figure 2.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to
Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention
Within the scope of.
Claims (8)
- A kind of 1. short acid water recovering process of fibre, it is characterised in that：Step is as follows：By the multi-effect wastewater at acid station and the acid of rinsing bowl Property waste water is passed through the washing station of desulfurization station rear end, the fiber through the desulfurization of desulfurization station is washed, the fiber pH value after washing is 8.5~10.5.
- 2. the short acid water recovering process of fibre as claimed in claim 1, it is characterised in that：The pH value of the multi-effect wastewater is 1.0 ~3.0.
- 3. the short acid water recovering process of fibre as claimed in claim 1 or 2, it is characterised in that：The multi-effect wastewater is passed through washing The flow stood is 40~50m3/h。
- 4. the short acid water recovering process of fibre as claimed in claim 3, it is characterised in that：The temperature when multi-effect wastewater is passed through For 20~40 DEG C.
- 5. the short acid water recovering process of fibre as claimed in claim 1, it is characterised in that：The pH value of the acid waste water is 2.0 ~4.0.
- 6. the short acid water recovering process of fibre as described in claim 1 or 4, it is characterised in that：The stream that the acid waste water is passed through Measure as 15~20m3/h。
- 7. the short acid water recovering process of fibre as claimed in claim 6, it is characterised in that：The temperature when acid waste water is passed through For 20~40 DEG C.
- 8. the short acid water recovering process of fibre as claimed in claim 1, it is characterised in that：The washing station has also been passed through 0~10 m3/ h soft water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691228.3A CN107459122A (en) | 2017-08-14 | 2017-08-14 | Short fiber acidic water recycling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691228.3A CN107459122A (en) | 2017-08-14 | 2017-08-14 | Short fiber acidic water recycling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107459122A true CN107459122A (en) | 2017-12-12 |
Family
ID=60549196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710691228.3A Pending CN107459122A (en) | 2017-08-14 | 2017-08-14 | Short fiber acidic water recycling process |
Country Status (1)
| Country | Link |
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| CN (1) | CN107459122A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470560A (en) * | 2019-01-24 | 2020-07-31 | 山东雅美科技有限公司 | Method for recycling acid wastewater in viscose fiber production |
| CN112093960A (en) * | 2020-09-01 | 2020-12-18 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
| CN112390440A (en) * | 2020-10-16 | 2021-02-23 | 唐山三友远达纤维有限公司 | Method for recycling acid water between spinning and practicing cars |
| CN112522817A (en) * | 2020-12-04 | 2021-03-19 | 宜宾丝丽雅股份有限公司 | Production process of odorless viscose fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001340875A (en) * | 2000-05-31 | 2001-12-11 | Shin Etsu Handotai Co Ltd | Wastewater treatment method in semiconductor manufacturing process utilizing pure water making waste liquid |
| CN105420830A (en) * | 2015-12-11 | 2016-03-23 | 宜宾丝丽雅股份有限公司 | Spinning wash bowl waste water utilization system |
| CN206368059U (en) * | 2017-01-05 | 2017-08-01 | 北京格林博瑞科技有限公司 | A kind of waste water neutralized system |
-
2017
- 2017-08-14 CN CN201710691228.3A patent/CN107459122A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001340875A (en) * | 2000-05-31 | 2001-12-11 | Shin Etsu Handotai Co Ltd | Wastewater treatment method in semiconductor manufacturing process utilizing pure water making waste liquid |
| CN105420830A (en) * | 2015-12-11 | 2016-03-23 | 宜宾丝丽雅股份有限公司 | Spinning wash bowl waste water utilization system |
| CN206368059U (en) * | 2017-01-05 | 2017-08-01 | 北京格林博瑞科技有限公司 | A kind of waste water neutralized system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111470560A (en) * | 2019-01-24 | 2020-07-31 | 山东雅美科技有限公司 | Method for recycling acid wastewater in viscose fiber production |
| CN112093960A (en) * | 2020-09-01 | 2020-12-18 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
| CN112093960B (en) * | 2020-09-01 | 2021-10-29 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
| CN112390440A (en) * | 2020-10-16 | 2021-02-23 | 唐山三友远达纤维有限公司 | Method for recycling acid water between spinning and practicing cars |
| CN112390440B (en) * | 2020-10-16 | 2023-05-23 | 唐山三友远达纤维有限公司 | Method for recycling acidic water in spinning workshop |
| CN112522817A (en) * | 2020-12-04 | 2021-03-19 | 宜宾丝丽雅股份有限公司 | Production process of odorless viscose fiber |
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| PB01 | Publication | ||
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Application publication date: 20171212 |