CN103669071B - A kind of processing method of black liquid - Google Patents
A kind of processing method of black liquid Download PDFInfo
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- CN103669071B CN103669071B CN201310644011.9A CN201310644011A CN103669071B CN 103669071 B CN103669071 B CN 103669071B CN 201310644011 A CN201310644011 A CN 201310644011A CN 103669071 B CN103669071 B CN 103669071B
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- black liquid
- nano titanium
- titanium oxide
- afwillite
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Abstract
The invention discloses a kind of processing method of black liquid, it is characterized in that: in every cubic metre of pending black liquid, place the immobilized catalytic sheet of nano titanium oxide 2-4 square metres, add afwillite emulsion 100-200 liters/every cubic metre again, fully stir, finally carry out sedimentation separation.The present invention adopts the immobilized catalytic sheet of nano titanium oxide and afwillite emulsion process black liquid, and not only operation is simple, and processing cost is low, and effectively can remove black liquid.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of processing method of black liquid.
Background technology
Paper mill often can produce a lot of waste water, and the organic matter usually containing different colours in waste water, organic matter is mixed in together, during contaminated wastewater serious consequence, usually in black.And be the problem that long-term disposal is badly in need of in each large paper mill to the process of this black liquid.
Publication number is 1156126, publication date is that the Chinese patent literature of on 08 06th, 1997 discloses a kind for the treatment of paper-making black liquor and it is characterized in that: a, black liquid phosphoric acid or phosphate are acidified to pH value 2 ± 0.5, add the lignin in polyacrylamide flocculation black liquor again, hemicellulose and other organic matter, isolated by filtration; B, clarified solution add superfluous lime in 70-90 DEG C of alkalization 1-2 hour, reclaim alkali lye, and the thick screenings in lignin and other organic matter and pulping and paper-making or secondary stock make fiberboard; Precipitation after c, recovery alkali lye adds phosphoric acid or sulfuric acid obtains phosphate fertilizer.
Treating paper-making black liquor disclosed in this patent document, polyacrylamide flocculation is added again by using phosphoric acid or phosphate acidifying black liquid, be separated by filtration out lignin and organic matter, clarified solution continues process with decomposing organic matter through activated sludge, add lime causticization again, reclaim alkali lye, sediment is by adding phosphoric acid or gas washing in SA production phosphate fertilizer.Adopt processing method of the present invention, the lignin of separation can make fiberboard with the screenings that produces in paper-making process; Recycle of alkali liquor recycles; Sediment manufactures soluble phosphoric manure, but complex procedures, processing cost is quite high.
Publication number is 102277767A, publication date is that the Chinese patent literature of 2011-12-14 discloses a kind for the treatment of paper-making black liquor, comprise the following steps: that black liquor is put into treatment trough by (1), under stirring, hydrogen chloride is added in black liquor, until black liquor PH is 7, then add sodium chloride in black liquor, make black liquor be saturation state; (2) saturated solution that step (1) obtains is cooled to less than-5 DEG C, static 1-2 hour, separates out the organic matter in saturated solution; (3) solid-liquor separation is carried out to the liquid-solid mixed liquor that step (2) obtains, the liquid after being separated is put into decolouring groove, in decolouring groove, add decolorizer carry out desolventing technology.
The present invention has that treatment process is short, equipment investment is little, consume energy in processing procedure low advantage.What is more important, waste water (sodium chloride saturated solution) after treatment, can be used as the raw materials for production of electrochemical industry, isolated organic solid can be used as industrial fuel, but not only processing cost is high, and the process of black liquor is not thorough.
Summary of the invention
The present invention is in order to overcome the defect of above-mentioned prior art, there is provided a kind of processing method of black liquid, the present invention adopts the immobilized catalytic sheet of nano titanium oxide and afwillite emulsion process black liquid, and not only operation is simple, processing cost is low, and effectively can remove black liquid.
The present invention is achieved through the following technical solutions:
A kind of processing method of black liquid, it is characterized in that: in every cubic metre of pending black liquid, place the immobilized catalytic sheet of nano titanium oxide 2-4 square metres, add afwillite emulsion 100-200 liters/every cubic metre again, fully stir, finally carry out sedimentation separation.
Described afwillite emulsion is the immobilized catalytic sheet catalytic treatment of mixing material nano titanium oxide of silicic acid by generating hydrolysis of silicon tetrachloride and hydrochloric acid, then adds calcium hydroxide and carry out neutralization and obtain.
Described nano titanium dioxide film face photocatalysis treatment refers to puts into the immobilized catalytic sheet of nano titanium oxide in water, under natural daylight or with ultra violet lamp, water and nano titanium oxide immobilized catalytic sheet generation chemical reaction.
The described well-beaten time is 10-30 minutes.
Well-beatenly use Hg lamp irradiation 2-3 hour simultaneously.
The immobilized catalytic sheet of nano titanium oxide of the present invention is made up of ceramic body, glazed layer and nano titanium dioxide film surface layer from top to bottom successively, and glazed layer is attached to ceramic body on the surface, and nano titanium dioxide film surface layer bakes on glazed layer.
Titanium dioxide is a kind of white solid or pulverous amphoteric oxide, can be decomposed to extract or decomposed by titanium tetrachloride by rutile acid to obtain, titanium dioxide stable in properties.
Beneficial effect of the present invention is mainly manifested in the following aspects:
One, adopt the immobilized catalytic sheet of nano titanium oxide and afwillite emulsion process black liquid, the chemical reaction in treatment process process carries out under normal conditions, does not consume the energy, non-pollution discharge; Black in black liquor can be taken off, degraded COD, and can deodorizing, sedimentation separation speed is fast, and the water after process can return production line and use, and precipitum can do industrial chemicals and extracts lignin and half fiber or make soil conditioner; The immobilized catalytic sheet of nano titanium oxide and the organic matter of afwillite emulsion fully and in black liquid react to adopt " placing the immobilized catalytic sheet of nano titanium oxide 2-4 square metres in every cubic metre of pending black liquid; add afwillite emulsion 100-200 liters again " specific proportioning to ensure, thus the solid in thorough sedimentation black liquid, decolouring and deodorizing.
Two, the well-beaten time is 10-30 minutes, and the organic matter in afwillite emulsion and black liquid can be made fully to mix, and reaction contact surface is larger, coordinates the immobilized catalytic sheet of nano titanium oxide, reaction can be made more thorough.
Three, well-beatenly use Hg lamp irradiation 2-3 hour simultaneously, the organic matter reaction in afwillite emulsion and black liquid can be accelerated, improve reaction efficiency.
Detailed description of the invention
Embodiment 1
A processing method for black liquid, places the immobilized catalytic sheet of nano titanium oxide 2 square metres, then adds afwillite emulsion 100 liters/every cubic metre, fully stir, finally carry out sedimentation separation in every cubic metre of pending black liquid.
Described afwillite emulsion is the immobilized catalytic sheet catalytic treatment of mixing material nano titanium oxide of silicic acid by generating hydrolysis of silicon tetrachloride and hydrochloric acid, then adds calcium hydroxide and carry out neutralization and obtain.
Described nano titanium dioxide film face photocatalysis treatment refers to puts into the immobilized catalytic sheet of nano titanium oxide in water, under natural daylight or with ultra violet lamp, water and nano titanium oxide immobilized catalytic sheet generation chemical reaction.
The described well-beaten time is 10 minutes.
Well-beatenly use Hg lamp irradiation 2 hours simultaneously.
The present embodiment is the most basic embodiment, and adopt the immobilized catalytic sheet of nano titanium oxide and afwillite emulsion process black liquid, the chemical reaction in treatment process process carries out under normal conditions, does not consume the energy, non-pollution discharge; Black in black liquor can be taken off, degraded COD, and can deodorizing, sedimentation separation speed is fast, and the water after process can return production line and use, and precipitum can do industrial chemicals and extracts lignin and half fiber or make soil conditioner; The immobilized catalytic sheet of nano titanium oxide and the organic matter of afwillite emulsion fully and in black liquid react face to adopt " placing the immobilized catalytic sheet of nano titanium oxide 2 square metres in every cubic metre of pending black liquid; add afwillite emulsion 100 liters/every cubic metre again " specific proportioning to ensure, thus the organic matter thoroughly decomposed in black liquid, reach the object removing black liquid.
Embodiment 2
A processing method for black liquid, places the immobilized catalytic sheet of nano titanium oxide 3 square metres, then adds afwillite emulsion 150 liters/every cubic metre, fully stir, finally carry out sedimentation separation in every cubic metre of pending black liquid.
Described afwillite emulsion is the immobilized catalytic sheet catalytic treatment of mixing material nano titanium oxide of silicic acid by generating hydrolysis of silicon tetrachloride and hydrochloric acid, then adds calcium hydroxide and carry out neutralization and obtain.
Described nano titanium dioxide film face photocatalysis treatment refers to puts into the immobilized catalytic sheet of nano titanium oxide in water, under natural daylight or with ultra violet lamp, water and nano titanium oxide immobilized catalytic sheet generation chemical reaction.
The described well-beaten time is 20 minutes.
The present embodiment is better embodiment, and the well-beaten time is 20 minutes, and the organic matter in afwillite emulsion and black liquid can be made fully to mix, and reaction contact surface is larger, coordinates the immobilized catalytic sheet of nano titanium oxide, reaction can be made more thorough.
Embodiment 3
Described afwillite emulsion is the immobilized catalytic sheet catalytic treatment of mixing material nano titanium oxide of silicic acid by generating hydrolysis of silicon tetrachloride and hydrochloric acid, then adds calcium hydroxide and carry out neutralization and obtain.
Described nano titanium dioxide film face photocatalysis treatment refers to puts into the immobilized catalytic sheet of nano titanium oxide in water, under natural daylight or with ultra violet lamp, water and nano titanium oxide immobilized catalytic sheet generation chemical reaction.
A processing method for black liquid, places the immobilized catalytic sheet of nano titanium oxide 4 square metres, then adds afwillite emulsion 200 liters/every cubic metre, fully stir, finally carry out sedimentation separation in every cubic metre of pending black liquid.
The described well-beaten time is 30 minutes.
Well-beatenly use Hg lamp irradiation 3 hours simultaneously.
The present embodiment is preferred forms, well-beatenly uses Hg lamp irradiation 3 hours simultaneously, can accelerate the organic matter reaction in afwillite emulsion and black liquid, improve reaction efficiency.
The invention is not restricted to above-described embodiment, according to the description of above-described embodiment, those of ordinary skill in the art also can make some apparent changes to the present invention, but these changes all should fall within the protection domain of the claims in the present invention.
Claims (3)
1. the processing method of a black liquid, it is characterized in that: in every cubic metre of pending black liquid, place the immobilized catalytic sheet of nano titanium oxide 2-4 square metres, add afwillite emulsion 100-200 liters/every cubic metre again, abundant stirring, finally carry out sedimentation separation, described afwillite emulsion is the immobilized catalytic sheet catalytic treatment of mixing material nano titanium oxide of silicic acid by generating hydrolysis of silicon tetrachloride and hydrochloric acid, add again calcium hydroxide carry out neutralization obtain, the catalytic treatment of nano titanium oxide immobilized catalytic sheet refers to puts into the immobilized catalytic sheet of nano titanium oxide in water, under natural daylight or with ultra violet lamp, water and nano titanium oxide immobilized catalytic sheet generation chemical reaction.
2. the processing method of a kind of black liquid according to claim 1, is characterized in that: the described well-beaten time is 10-30 minutes.
3. the processing method of a kind of black liquid according to claim 2, is characterized in that: well-beatenly use Hg lamp irradiation 2-3 hour simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310644011.9A CN103669071B (en) | 2013-12-05 | 2013-12-05 | A kind of processing method of black liquid |
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| CN201310644011.9A CN103669071B (en) | 2013-12-05 | 2013-12-05 | A kind of processing method of black liquid |
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| CN103669071A CN103669071A (en) | 2014-03-26 |
| CN103669071B true CN103669071B (en) | 2016-04-06 |
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| CN104150643B (en) * | 2014-08-29 | 2016-02-03 | 乐山三玺水处理设备有限公司 | A kind of method applying discoloring agent process dyeing and printing sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156126A (en) * | 1996-01-31 | 1997-08-06 | 迁安县华丰造纸厂 | Treatment method of papermaking black liquor |
| US5922172A (en) * | 1993-06-04 | 1999-07-13 | Korsnas Ab | Combustion of black liquid and processing of lime sludge in a recovery boiler |
| CN102417227A (en) * | 2011-09-01 | 2012-04-18 | 柯玉章 | Harmless treatment and comprehensive utilization method of silicon tetrachloride |
-
2013
- 2013-12-05 CN CN201310644011.9A patent/CN103669071B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5922172A (en) * | 1993-06-04 | 1999-07-13 | Korsnas Ab | Combustion of black liquid and processing of lime sludge in a recovery boiler |
| CN1156126A (en) * | 1996-01-31 | 1997-08-06 | 迁安县华丰造纸厂 | Treatment method of papermaking black liquor |
| CN102417227A (en) * | 2011-09-01 | 2012-04-18 | 柯玉章 | Harmless treatment and comprehensive utilization method of silicon tetrachloride |
Non-Patent Citations (1)
| Title |
|---|
| 催化法水解四氯化硅产物降重金属;李钰等;《地球》;20130731(第7期);第354页左栏第1行至右栏最后一行 * |
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