CN109211894A - For measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system - Google Patents
For measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system Download PDFInfo
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- CN109211894A CN109211894A CN201811364789.3A CN201811364789A CN109211894A CN 109211894 A CN109211894 A CN 109211894A CN 201811364789 A CN201811364789 A CN 201811364789A CN 109211894 A CN109211894 A CN 109211894A
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- 238000000034 method Methods 0.000 title claims abstract description 126
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 109
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000002351 wastewater Substances 0.000 title claims abstract description 83
- 239000010893 paper waste Substances 0.000 title claims abstract description 78
- 239000012488 sample solution Substances 0.000 claims abstract description 100
- 238000002835 absorbance Methods 0.000 claims abstract description 26
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 43
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 24
- 229920002472 Starch Polymers 0.000 claims description 20
- 235000019698 starch Nutrition 0.000 claims description 20
- 239000008107 starch Substances 0.000 claims description 20
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 15
- 229910052740 iodine Inorganic materials 0.000 claims description 15
- 239000011630 iodine Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000011481 absorbance measurement Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Substances [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 6
- 239000004327 boric acid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000002085 enols Chemical class 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system.This method comprises: establishing the absorbance of polyvinyl alcohol and the standard curve of concentration；It is sampled from paper-making process plain boiled water, waste water or paper and prepares sample solution；Color developing agent is added in the sample solution so that the sample solution develops the color；The absorbance of sample solution after measurement colour developing；The polyvinyl alcohol concentration in the sample solution is calculated using the standard curve；Calculate the polyvinyl alcohol content in paper-making process plain boiled water, waste water or paper.The present invention can play following advantageous effects: can accurately measure paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper.
Description
Technical field
The present invention relates to for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system.
Background technique
In the paper making process, polyvinyl alcohol (PVA) can stick together on paper making equipment, interfere to production, while poly- second
Enol will lead to the raising of COD in waste water.
It needs to be measured polyvinyl alcohol content in measurement paper-making process plain boiled water, waste water or paper.However, the prior art
In there are no can accurately measure paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system.
Summary of the invention
It is an advantage of the invention to provide one kind for measuring paper-making process plain boiled water, polyethylene in waste water or paper
The method of alcohol content, can solve the problems of prior art, can accurately measure paper-making process plain boiled water, waste water or paper
Middle polyvinyl alcohol content.
Object above of the invention by it is a kind of for measuring paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper
Method realize, which comprises
Establish the absorbance of polyvinyl alcohol and the standard curve of concentration；
It is sampled from paper-making process plain boiled water, waste water or paper and prepares sample solution；
Color developing agent is added in the sample solution so that the sample solution develops the color；
The absorbance of sample solution after measurement colour developing；
The polyvinyl alcohol concentration in the sample solution is calculated using the standard curve；
Calculate the polyvinyl alcohol content in paper-making process plain boiled water, waste water or paper.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can accurately measure paper-making process plain boiled water, polyvinyl alcohol in waste water or paper
Content.
Specifically, the present invention is by establishing the absorbance of polyvinyl alcohol and the standard curve of concentration, and by matching sample preparation
The absorbance of sample solution is further counted after product solution and measurement colour developing to calculate the polyvinyl alcohol concentration in sample solution
The polyvinyl alcohol content in paper-making process plain boiled water, waste water or paper is calculated, so as to accurately measure paper-making process plain boiled water, waste water
Or polyvinyl alcohol content in paper.
It is preferred that the step of measurement absorbance, chooses the absorbing wavelength of 665nm.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can exclude the interference of other water soluble chemicals in addition to starch.
It is preferred that the step of preparing sample solution includes: to weigh a certain amount of sample；Deionized water is added in the sample
Heating stirring afterwards, to be configured to sample solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: sample solution can suitably be prepared, consequently facilitating in measurement sample solution
Polyvinyl alcohol concentration.
It is preferred that the step of preparing sample solution further includes the excessive addition hydrochloric acid in sample solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can exclude the interference for the starch being added in paper-making process.
It is preferred that the step of preparing sample solution further includes adding iodine solution in sample solution, with sample survey solution
In starch whether be removed.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can the starch effectively in sample survey solution whether be removed, it is ensured that
Measure accuracy.
It is preferred that the step of preparing sample solution further includes being filtered using sand core funnel to sample solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can exclude the interference of the solids such as fiber.
Another object of the present invention is to provide one kind for measuring paper-making process plain boiled water, polyethylene in waste water or paper
The system of alcohol content, can solve the problems of prior art, can accurately measure paper-making process plain boiled water, waste water or paper
Middle polyvinyl alcohol content.
Object above of the invention by it is a kind of for measuring paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper
System realize, the system comprises:
Sample solution device for formulating, for being sampled from paper-making process plain boiled water, waste water or paper and preparing sample solution；
Sample solution display device, for color developing agent to be added in the sample solution so that the sample solution is aobvious
Color；
Absorbance measurement device, for measure colour developing after sample solution absorbance, to utilize the extinction of polyvinyl alcohol
Degree and the standard curve of concentration calculate the polyvinyl alcohol concentration in the sample solution, and calculate paper-making process plain boiled water, give up
Polyvinyl alcohol content in water or paper.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can accurately measure paper-making process plain boiled water, polyvinyl alcohol in waste water or paper
Content.
It is preferred that the absorbance measurement device chooses the absorbing wavelength of 665nm.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can exclude the interference of other water soluble chemicals in addition to starch.
It is preferred that the sample solution device for formulating includes: that sample weighs device, for weighing a certain amount of sample；
Heating and stirring device, for heating stirring after addition deionized water in the sample, to be configured to sample solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: sample solution can suitably be prepared, consequently facilitating in measurement sample solution
Polyvinyl alcohol concentration.
It is preferred that the sample solution device for formulating further includes hydrochloric acid adding set, for adding in sample solution
Excessive hydrochloric acid.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can exclude the interference for the starch being added in paper-making process.
It is preferred that the sample solution device for formulating further includes iodine solution adding set, for adding in sample solution
Whether iodine solution has been removed with the starch in sample survey solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can the starch effectively in sample survey solution whether be removed, it is ensured that
Measure accuracy.
It is preferred that the sample solution device for formulating further includes sand core funnel, for being filtered to sample solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can exclude the interference of the solids such as fiber.
Detailed description of the invention
Fig. 1 be one embodiment of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper
The schematic diagram of method.
Fig. 2 be one embodiment of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper
The schematic diagram of system.
Fig. 3 is the schematic diagram of the absorbance of the polyvinyl alcohol of one embodiment of the invention and the standard curve of concentration.
Reference signs list
101: sample solution device for formulating
102: sample solution display device
103: absorbance measurement device
1011: sample weighs device
1012: heating and stirring device
1013: hydrochloric acid adding set
1014: iodine solution adding set
1015: sand core funnel
Specific embodiment
A specific embodiment of the invention explained below, it should be pointed out that in the specific descriptions of these embodiments
In the process, in order to carry out brief and concise description, this specification can not all features to actual embodiment make in detail
Most description.It is to be understood that during the actual implementation of any one embodiment, as in any one work
During journey project or design object, in order to realize the objectives of developer, in order to meet, system is relevant or quotient
The relevant limitation of industry can usually make various specific decisions, and this can also be implemented from a kind of embodiment to another kind
It changes between mode.Moreover, it is to be understood that although effort made in this development process may be complicated
And it is interminable, however for those skilled in the art relevant to present disclosure, in the disclosure
The changes such as some designs, manufacture or the production carried out on the basis of the technology contents of exposure are conventional technology, no
It should be understood as that content of this disclosure is insufficient.
Unless otherwise defined, technical term or scientific term used in claims and specification should be this hair
The ordinary meaning that personage in bright technical field with general technical ability is understood.Present patent application specification and power
" first ", " second " used in sharp claim and similar word are not offered as any sequence, quantity or importance, and
It is used only to distinguish different component parts.The similar word such as "one" or " one " is not offered as quantity limitation, but indicates
There are at least one.The similar word such as " comprising " or "comprising" means to appear in the element before " comprising " or "comprising"
Either object covers the element for appearing in " comprising " or "comprising" presented hereinafter or object and its equivalent element, it is not excluded that
Other elements or object." connection " either the similar word such as " connected " is not limited to physics or mechanical connection,
It is also not necessarily limited to direct or indirect connection.
Fig. 1 be one embodiment of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper
The schematic diagram of method.Fig. 2 is one embodiment of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The schematic diagram of the system of amount.Fig. 3 is the signal of the absorbance of the polyvinyl alcohol of one embodiment of the invention and the standard curve of concentration
Figure.
As shown in Figure 1, an embodiment according to the present invention, one kind is for measuring in paper-making process plain boiled water, waste water or paper
The method of polyvinyl alcohol content includes:
Establish the absorbance of polyvinyl alcohol and the standard curve of concentration；
It is sampled from paper-making process plain boiled water, waste water or paper and prepares sample solution；
Color developing agent is added in sample solution so that sample solution develops the color；
The absorbance of sample solution after measurement colour developing；
The polyvinyl alcohol concentration in sample solution is calculated using standard curve；
Calculate the polyvinyl alcohol content in paper-making process plain boiled water, waste water or paper.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can accurately measure paper-making process plain boiled water, polyvinyl alcohol in waste water or paper
Content.
Specifically, the present invention is by establishing the absorbance of polyvinyl alcohol and the standard curve of concentration, and by matching sample preparation
The absorbance of sample solution is further counted after product solution and measurement colour developing to calculate the polyvinyl alcohol concentration in sample solution
The polyvinyl alcohol content in paper-making process plain boiled water, waste water or paper is calculated, so as to accurately measure paper-making process plain boiled water, waste water
Or polyvinyl alcohol content in paper.
It is preferred that establish polyvinyl alcohol absorbance and concentration standard curve the step of can be specific as follows:
1mg/L, 20mg/L, 20mg/L, 40mg/L standard liquid are configured by stoste of 2000mg/L standard liquid；
The standard liquid of the above-mentioned various concentration of 5ml is respectively added in 25ml volumetric flask, 5ml boric acid is added, determines after 1ml I/KI solution
Hold；
The standard liquid of above-mentioned various concentration is developed the color 15 minutes and measures absorbance in 10mm cuvette；
Absorbance is measured according to the standard liquid of above-mentioned various concentration, the standard of the absorbance and concentration of establishing polyvinyl alcohol is bent
Line (as shown in Figure 3).
It is preferred that as shown in Figure 1, the step of measuring absorbance chooses the absorbing wavelength of 665nm.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can exclude the interference of other water soluble chemicals in addition to starch.
It is preferred that as shown in Figure 1, the step of preparing sample solution includes: to weigh a certain amount of sample；In the sample plus
Enter heating stirring after deionized water, to be configured to sample solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: sample solution can suitably be prepared, consequently facilitating in measurement sample solution
Polyvinyl alcohol concentration.
It is preferred that as shown in Figure 1, the step of preparing sample solution further includes the excessive addition hydrochloric acid in sample solution.
So-called " excess " refers to, the hydrochloric acid content of addition can be enough to decompose the starch being added in paper-making process.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can exclude the interference for the starch being added in paper-making process.
It is preferred that as shown in Figure 1, the step of preparing sample solution further includes adding iodine solution in sample solution, with inspection
Whether the starch tested in sample solution has been removed.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can the starch effectively in sample survey solution whether be removed, it is ensured that
Measure accuracy.
It is preferred that as shown in Figure 1, the step of preparing sample solution further includes being carried out using sand core funnel to sample solution
Filtering.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The method of amount can play following advantageous effects: can exclude the interference of the solids such as fiber.
As shown in Fig. 2, an embodiment according to the present invention, one kind is for measuring in paper-making process plain boiled water, waste water or paper
The system of polyvinyl alcohol content includes:
Sample solution device for formulating 101, it is molten for being sampled from paper-making process plain boiled water, waste water or paper and preparing sample
Liquid；
Sample solution display device 102, for color developing agent to be added in sample solution so that sample solution develops the color；
Absorbance measurement device 103, for measure colour developing after sample solution absorbance, to utilize the suction of polyvinyl alcohol
Luminosity and the standard curve of concentration calculate the polyvinyl alcohol concentration in sample solution, and calculate paper-making process plain boiled water, waste water
Or the polyvinyl alcohol content in paper.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can accurately measure paper-making process plain boiled water, polyvinyl alcohol in waste water or paper
Content.
It is preferred that as shown in Fig. 2, absorbance measurement device 103 chooses the absorbing wavelength of 665nm.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can exclude the interference of other water soluble chemicals in addition to starch.
It is preferred that as shown in Fig. 2, sample solution device for formulating 101 includes: that sample weighs device 1011, for weighing
A certain amount of sample；Heating and stirring device 1012, for heating stirring after addition deionized water in the sample, to be configured to sample
Product solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: sample solution can suitably be prepared, consequently facilitating in measurement sample solution
Polyvinyl alcohol concentration.
It is preferred that as shown in Fig. 2, sample solution device for formulating 101 further includes hydrochloric acid adding set 1013, in sample
Excessive addition hydrochloric acid in product solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can exclude the interference for the starch being added in paper-making process.
It is preferred that as shown in Fig. 2, sample solution device for formulating 101 further includes iodine solution adding set 1014, in sample
Iodine solution is added in product solution, whether has been removed with the starch in sample survey solution.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can the starch effectively in sample survey solution whether be removed, it is ensured that
Measure accuracy.
It is preferred that as shown in Fig. 2, sample solution device for formulating 101 further includes sand core funnel 1015, for molten to sample
Liquid is filtered.
According to the above technical scheme, of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol contains in waste water or paper
The system of amount can play following advantageous effects: can exclude the interference of the solids such as fiber.
First embodiment
1 uses following reagent:
Iodine: AR grades
Potassium iodide: AR grades
Boric acid: AR grades
40g/L boric acid: 4g boric acid is settled to 100ml
Wagner's reagent: weighing 1.27g iodine and 2.5g potassium iodide is dissolved in a small amount of water, is diluted with water to 100mL
Colour reagent: 1ml iodine solution, 5ml boric acid
Standard sample: weighing 0.2g PVA standard specimen (being derived from paper machine, solid), be placed in 100mL beaker, and 50mL water, 2ml is added
Concentrated hydrochloric acid, heating water bath, which boils 20 minutes, to be made it dissolve, and is then moved into 100mL volumetric flask.Water constant volume is used after cooling, is shaken up,
As PVA standard reserving solution.1mL standard reserving solution is drawn, is placed in 100mL volumetric flask, with water constant volume, shakes up, is marked as PVA
Quasi- solution.It is diluted to various concentration as needed.(0-40mg/L)
2 sample tests
2.1 sample treatment
2.1.1 10g sample measurement mass dryness fraction is weighed
2.1.2 10g wet pulp sample is taken again, and 50ml deionized water is added and is placed in a beaker, boils 20 minutes
2.1.3 2ml concentrated hydrochloric acid is added, continues to boil 15 minutes
2.1.4 it takes several iodine solutions that are added dropwise to see whether become blue, continues to boil if aobvious basket, until starch (is added by complete hydrolysis
Iodine solution is non-discolouring)
2.1.5 it is transferred in 100ml volumetric flask after the filtering of G2 sand core funnel, constant volume after cooling
3 colour developings
5ml sample solution is respectively added in 3.1 25ml volumetric flasks, 5ml boric acid is added, develops the color after 1ml I/KI solution constant volume
15 minutes
4 measure absorbance in 10mm cuvette, while can read concentration value
5 do blank simultaneously
The calculating and report of 6 results:
C=X*V*1000/w
C:PVA content (mg/Kg)
X: the concentration value (mg/L) of reading
W: sample dry weight (g)
V: volume (0.1L) after constant volume
Note: 1000 are scaled to the conversion coefficient of mg/Kg for unit mg/g.
It reports the average value measured twice, retains to 0.1mg/kg.
Inventor using it is of the invention for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method
And system, it is (paper machine white water, paper machine effluent pit, total water inlet, total in four positions of paper mill respectively in three not same dates
Draining), measure polyvinyl alcohol content.
Final measurement result is as shown in table 1.
Table 1
| Date | Paper machine white water (mg/l) | Paper machine effluent pit (mg/l) | Total water inlet (mg/l) | Total draining (mg/l) |
| 2017-11-28 | 367 | 281 | 83 | 3 |
| 2017-11-29 | 342 | 277 | 66 | 3 |
| 2017-11-30 | 342 | 222 | 67 | 3 |
From said determination result it is found that it is of the invention for measuring paper-making process plain boiled water, polyvinyl alcohol in waste water or paper
The method and system of content can accurately measure paper-making process plain boiled water, polyvinyl alcohol content in waste water or paper, high sensitivity, symbol
Paper mill actual conditions are closed, have directive significance to sewage treatment.
In order to verify the side of the polyvinyl alcohol content for measuring paper-making process plain boiled water, in waste water or paper for of the invention
The validity of method and system, inventor have also done mark-on reclaims test.Analysis method verifies validity with recovery of standard addition, leads to
It is often qualification with the recovery of standard addition of 80%-120%.Recovery of standard addition=(concentration measurement-sample concentration after mark-on)/add
Scalar.
Final test result is as shown in table 2.
Table 2
| Sample ID | Concentration measurement (mg/L) |
| Plain boiled water | 238 |
| 350ppm PVA sample is added in plain boiled water | 565 |
| 440ppm PVA sample is added in plain boiled water | 657 |
It is calculated, the recovery of standard addition to this plain boiled water sample is 90.76%, is met the requirements, and this further demonstrates this
Invention for measuring paper-making process plain boiled water, in waste water or paper, the method and system of polyvinyl alcohol content can be measured accurately and be made
Polyvinyl alcohol content in paper process plain boiled water, waste water or paper.
Above specific embodiments of the present invention have been described, it will be apparent, however, to one skilled in the art, that above-mentioned tool
Body embodiment is not construed as limiting the invention, and those skilled in the art can carry out on the basis of above disclosure
A variety of modifications, without beyond the scope of this invention.
Claims (12)
1. it is a kind of for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method, which is characterized in that it is described
Method includes:
Establish the absorbance of polyvinyl alcohol and the standard curve of concentration；
It is sampled from paper-making process plain boiled water, waste water or paper and prepares sample solution；
Color developing agent is added in the sample solution so that the sample solution develops the color；
The absorbance of sample solution after measurement colour developing；
The polyvinyl alcohol concentration in the sample solution is calculated using the standard curve；
Calculate the polyvinyl alcohol content in paper-making process plain boiled water, waste water or paper.
2. it is as described in claim 1 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method,
The step of being characterized in that, measuring absorbance chooses the absorbing wavelength of 665nm.
3. it is as described in claim 1 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method,
The step of being characterized in that, preparing sample solution includes: to weigh a certain amount of sample；It heats and stirs after addition deionized water in the sample
It mixes, to be configured to sample solution.
4. it is as claimed in claim 3 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method,
The step of being characterized in that, preparing sample solution further includes the excessive addition hydrochloric acid in sample solution.
5. it is as claimed in claim 4 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method,
The step of being characterized in that, preparing sample solution further includes that iodine solution is added in sample solution, with the starch in sample survey solution
Whether it has been removed.
6. it is as claimed in claim 3 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method,
The step of being characterized in that, preparing sample solution further includes being filtered using sand core funnel to sample solution.
7. it is a kind of for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system, which is characterized in that it is described
System includes:
Sample solution device for formulating, for being sampled from paper-making process plain boiled water, waste water or paper and preparing sample solution；
Sample solution display device, for color developing agent to be added in the sample solution so that the sample solution develops the color；
Absorbance measurement device, for measure colour developing after sample solution absorbance, thus using polyvinyl alcohol absorbance with
The standard curve of concentration calculates the polyvinyl alcohol concentration in the sample solution, and calculate paper-making process plain boiled water, waste water or
Polyvinyl alcohol content in paper.
8. it is as claimed in claim 7 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system,
It is characterized in that, the absorbance measurement device chooses the absorbing wavelength of 665nm.
9. it is as claimed in claim 7 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system,
It is characterized in that, the sample solution device for formulating includes: that sample weighs device, for weighing a certain amount of sample；Heating stirring
Device, for heating stirring after addition deionized water in the sample, to be configured to sample solution.
10. it is as claimed in claim 9 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system,
It is characterized in that, the sample solution device for formulating further includes hydrochloric acid adding set, for the excessive addition salt in sample solution
Acid.
11. it is as claimed in claim 10 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system,
It is characterized in that, the sample solution device for formulating further includes iodine solution adding set, for adding iodine solution in sample solution, with
Whether the starch in sample survey solution has been removed.
12. it is as claimed in claim 9 for measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system,
It is characterized in that, the sample solution device for formulating further includes sand core funnel, for being filtered to sample solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364789.3A CN109211894A (en) | 2018-11-16 | 2018-11-16 | For measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811364789.3A CN109211894A (en) | 2018-11-16 | 2018-11-16 | For measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system |
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| Publication Number | Publication Date |
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| CN109211894A true CN109211894A (en) | 2019-01-15 |
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| CN201811364789.3A Pending CN109211894A (en) | 2018-11-16 | 2018-11-16 | For measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content method and system |
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| CN (1) | CN109211894A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431057A (en) * | 2020-11-24 | 2021-03-02 | 芬欧汇川(中国)有限公司 | System and method for separating polyvinyl alcohol from papermaking white water |
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| CN203758910U (en) * | 2014-02-28 | 2014-08-06 | 芬欧汇川(中国)有限公司 | System for measuring contents of alkenyl succinic anhydride and hydrolyzate of alkenyl succinic anhydride in papermaking bleach or waste water |
| CN106053301A (en) * | 2016-06-06 | 2016-10-26 | 瑞辰星生物技术（广州）有限公司 | Method for monitoring distribution condition of sticking substances in pulping and papermaking system |
| CN209460147U (en) * | 2018-11-16 | 2019-10-01 | 芬欧汇川(中国)有限公司 | For measuring paper-making process plain boiled water, in waste water or paper polyvinyl alcohol content system |
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| CN101680173A (en) * | 2007-05-16 | 2010-03-24 | 巴科曼实验室国际公司 | Detect the method for organic pollution in paper pulp and the fiber |
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| CN203758910U (en) * | 2014-02-28 | 2014-08-06 | 芬欧汇川(中国)有限公司 | System for measuring contents of alkenyl succinic anhydride and hydrolyzate of alkenyl succinic anhydride in papermaking bleach or waste water |
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| CN112431057A (en) * | 2020-11-24 | 2021-03-02 | 芬欧汇川(中国)有限公司 | System and method for separating polyvinyl alcohol from papermaking white water |
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