CN103818994A - Dosing method for ozone oxidation decolorant used for papermaking pulping waste water - Google Patents
Dosing method for ozone oxidation decolorant used for papermaking pulping waste water Download PDFInfo
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- CN103818994A CN103818994A CN201410066347.6A CN201410066347A CN103818994A CN 103818994 A CN103818994 A CN 103818994A CN 201410066347 A CN201410066347 A CN 201410066347A CN 103818994 A CN103818994 A CN 103818994A
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- waste water
- paper
- pulping waste
- oxidation
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Abstract
The invention provides a dosing method for an ozone oxidation decolorant used for papermaking pulping waste water. The method comprises the following steps: adding ozone accounting for 20 to 50% of a theoretical calculation amount to allow ozone oxidation to mainly be in a molecular oxidation phase and degrading colors, adsorbable organic halogen and lignin derivatives at first by using the characteristic that selectivity of molecular ozone enables oxidative degradation effects on colors, adsorbable organic halogen and lignin derivatives in papermaking pulping waste water to be substantially superior to removal effects on TOC and COD; and adding H2O2 and further removing organic matters by using the non-selective oxidation effect of H2O2 on organic matters. The method has the advantages of a small ozone addition amount, a high ozone utilization rate, reduced treatment cost, no secondary pollution and good removal effects on pollutants.
Description
Technical field
The invention belongs to paper waste process field, relate in particular to a kind of paper-making pulping waste water ozone oxidation discoloring agent and join throwing method.
Background technology
The organic waste waters such as pulping and paper-making are after pre-treatment and biological treatment, in former water, also there is the organism of a large amount of difficult for biological degradation, be difficult to it to process by conventional technique, and having strong oxidizing property, ozone can make organic structure generation noticeable change, the organism of unsaturation structure is converted into saturated structure organism, and larger molecular organics is converted into small organic molecule.
Ozone oxidation process mainly comprises two aspects: the one, and direct ozone reaction, selective; In addition, ozone can directly or by the radical type substance oxidation that triggers reaction, proliferative response and end reaction generation be permitted multiple compounds, each reaction all produces different free radicals, intermediate product hydroxyl radical free radical, be a kind of very strong oxygenant, react soon non-selectivity with organism, but for improving its efficiency, generally adopt the method for O3 catalytic oxidation to improve the concentration of hydroxyl radical free radical.Mostly the catalyzer of O3 catalytic oxidation is metal ion, adds catalyzer to improve the utilization ratio of ozone, but has brought concentration of metal ions in waste water to increase the weak point that removal is difficult simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of paper-making pulping waste water ozone oxidation discoloring agent to join throwing method, be intended to solve in existing pulping wastewater treatment process that ozone injected volume is large, utilization ratio is not high, need metal ion catalyst to bring secondary pollution problems.
The present invention realizes like this, a kind of paper-making pulping waste water ozone oxidation discoloring agent is joined throwing method, comprise the following steps: in paper-making pulping waste water, add ozone, and described ozone injected volume is 20～50% of Theoretical Calculation injected volume, after reacting completely, adds again enough H
2o
2.
Preferably, described ozone injected volume is 30% of Theoretical Calculation injected volume.
Preferably, the mode that described ozone adds is for to add by microporous aeration device.
Preferably, described Theoretical Calculation injected volume is L=2.77C
0.90, wherein, L is ozone dosage (mg/L), and C is for removing COD amount, and described removal COD amount equals inlet COD concentration (mg/L) and subtracts effluent COD concentration (mg/L).
Preferably, described paper-making pulping waste water is the paper waste secondary biochemical effluent that the former water of papermaking obtains after pre-treatment and biological treatment.
The present invention overcomes the deficiencies in the prior art, provide a kind of paper-making pulping waste water ozone oxidation discoloring agent to join throwing method, by first adding ozone in paper-making pulping waste water, and described ozone injected volume is 20～50% of Theoretical Calculation injected volume, obtains first step waste water after reacting completely; And then add enough H in described first step waste water
2o
2.The present invention adopts the feature pollutent (colourity) of ozone direct oxidation paper-making pulping waste water, and ozone dosage is low, and other organism adopts H
2o
2carrying out oxidation removal, is also to utilize H
2o
2decompose the hydroxyl radical free radical producing and be oxidized, oxidation capacity and O3 catalytic oxidation are suitable, and H
2o
2cost lower than O3 catalytic oxidation, and can not produce secondary pollution, not only improved the removal effect of ozone utilization rate and pollutent but also reduced processing cost.
Embodiment
Technical scheme provided by the invention is: a kind of paper-making pulping waste water ozone oxidation discoloring agent is joined throwing method, comprise the following steps: first in paper-making pulping waste water, add ozone, and described ozone injected volume is 20～50% of Theoretical Calculation injected volume, after reacting completely, add again enough H
2o
2.Wherein, described paper-making pulping waste water is the paper waste secondary biochemical effluent that the former water of papermaking obtains after pre-treatment and biological treatment.More specifically, described paper-making pulping waste water is the paper waste secondary biochemical effluent that the former water of papermaking obtains after coagulating sedimentation, bio anaerobic reaction, mud film aerobic reaction, precipitation.Theoretical Calculation injected volume is the required ozone injected volume of 3 times of COD values of processing paper-making pulping waste water.In the present invention, the Theoretical Calculation injected volume of ozone and the funtcional relationship of COD value are defined as L=2.77C
0.90, L is ozone dosage (mg/L), C is for removing COD amount (equaling inlet COD concentration subtracts effluent COD concentration, the mg/L of unit).In addition, the mode that ozone adds, for to add by microporous aeration device, in actual application, also can add by current potential mode.
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1
Toward 20% the ozone that adds Theoretical Calculation injected volume in paper-making pulping waste water, after reacting completely, add again enough H
2o
2, obtain waste water 1 after treatment.
Embodiment 2
Toward 50% ozone that adds Theoretical Calculation injected volume in paper-making pulping waste water, after reacting completely, add again enough H
2o
2, obtain waste water 2 after treatment.
Embodiment 3
Toward 30% the ozone that adds Theoretical Calculation injected volume in paper-making pulping waste water, after reacting completely, add again enough H
2o
2, obtain waste water 3 after treatment.
Comparative example
Toward the ozone that adds Theoretical Calculation injected volume in paper-making pulping waste water, after reacting completely, add again enough H
2o
2, obtain waste water 4 after treatment.
Effect embodiment
The waste water 1～4 obtaining in above-described embodiment is carried out respectively to the detection of COD value, colourity content, detected result is as shown in table 1 below:
Table 1 detected result
As can be seen from Table 1, the present invention adopts the feature pollutent (colourity) of ozone direct oxidation paper-making pulping waste water, and ozone dosage is low, and other organism adopts H
2o
2carrying out oxidation removal, is also to utilize H
2o
2decompose the hydroxyl radical free radical producing and be oxidized, oxidation capacity and O3 catalytic oxidation are suitable, and H
2o
2cost lower than O3 catalytic oxidation, and can not produce secondary pollution, not only improved the removal effect of ozone utilization rate and pollutent but also reduced processing cost.
Compare and the shortcoming and defect of prior art, the present invention has following beneficial effect: ozone dosage of the present invention is low, and ozone utilization rate is high, has reduced processing cost, and can not produce secondary pollution, and the removal effect of pollutent is fine.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. paper-making pulping waste water ozone oxidation discoloring agent is joined a throwing method, it is characterized in that, comprises the following steps: in paper-making pulping waste water, add ozone, and described ozone injected volume is 20～50% of Theoretical Calculation injected volume, adds enough H after reacting completely again
2o
2.
2. paper-making pulping waste water ozone oxidation discoloring agent as claimed in claim 1 is joined throwing method, it is characterized in that, described ozone injected volume is 30% of Theoretical Calculation injected volume.
3. paper-making pulping waste water ozone oxidation discoloring agent as claimed in claim 2 is joined throwing method, it is characterized in that, the mode that described ozone adds is for to add by microporous aeration device.
4. paper-making pulping waste water ozone oxidation discoloring agent as claimed in claim 3 is joined throwing method, it is characterized in that, described Theoretical Calculation injected volume is L=2.77C
0.90, wherein, L is ozone dosage (mg/L), and C is for removing COD amount, and described removal COD amount equals inlet COD concentration (mg/L) and subtracts effluent COD concentration (mg/L).
5. join throwing method as claim 4 paper-making pulping waste water ozone oxidation discoloring agent, it is characterized in that, described paper-making pulping waste water is the paper waste secondary biochemical effluent that the former water of papermaking obtains after pre-treatment and biological treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410066347.6A CN103818994B (en) | 2014-02-26 | 2014-02-26 | Throwing method joined by a kind of paper-making pulping waste water ozone oxidation discoloring agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410066347.6A CN103818994B (en) | 2014-02-26 | 2014-02-26 | Throwing method joined by a kind of paper-making pulping waste water ozone oxidation discoloring agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103818994A true CN103818994A (en) | 2014-05-28 |
| CN103818994B CN103818994B (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410066347.6A Expired - Fee Related CN103818994B (en) | 2014-02-26 | 2014-02-26 | Throwing method joined by a kind of paper-making pulping waste water ozone oxidation discoloring agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107032478A (en) * | 2017-05-11 | 2017-08-11 | 广东卓信环境科技股份有限公司 | A kind of sewage ozone high grade oxidation handling process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005005884A (en) * | 2003-06-10 | 2005-01-06 | Toshiba Corp | Disaster prevention information notifying method and disaster prevention information notifying system |
| CN101186402B (en) * | 2007-11-27 | 2011-06-01 | 华泰集团有限公司 | Fenton two-stage method oxidation processing technique for paper-making and pulping waste water |
| CN202390266U (en) * | 2011-07-25 | 2012-08-22 | 江门中顺纸业有限公司 | Decoloration reactor for grey water of paper industry |
-
2014
- 2014-02-26 CN CN201410066347.6A patent/CN103818994B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005005884A (en) * | 2003-06-10 | 2005-01-06 | Toshiba Corp | Disaster prevention information notifying method and disaster prevention information notifying system |
| CN101186402B (en) * | 2007-11-27 | 2011-06-01 | 华泰集团有限公司 | Fenton two-stage method oxidation processing technique for paper-making and pulping waste water |
| CN202390266U (en) * | 2011-07-25 | 2012-08-22 | 江门中顺纸业有限公司 | Decoloration reactor for grey water of paper industry |
Non-Patent Citations (1)
| Title |
|---|
| 张莹莹等: ""O3/H2O2联用工艺深度处理制浆造纸废水的试验研究"", 《水处理技术》, vol. 38, no. 3, 31 March 2012 (2012-03-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107032478A (en) * | 2017-05-11 | 2017-08-11 | 广东卓信环境科技股份有限公司 | A kind of sewage ozone high grade oxidation handling process |
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|---|---|
| CN103818994B (en) | 2016-02-17 |
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Granted publication date: 20160217 Termination date: 20190226 |