CN1156126A - Treatment method of papermaking black liquor - Google Patents
Treatment method of papermaking black liquor Download PDFInfo
- Publication number
- CN1156126A CN1156126A CN96100718A CN96100718A CN1156126A CN 1156126 A CN1156126 A CN 1156126A CN 96100718 A CN96100718 A CN 96100718A CN 96100718 A CN96100718 A CN 96100718A CN 1156126 A CN1156126 A CN 1156126A
- Authority
- CN
- China
- Prior art keywords
- treatment
- adds
- black liquor
- liquor
- organism
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 239000011094 fiberboard Substances 0.000 claims abstract description 5
- 239000002686 phosphate fertilizer Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 7
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 7
- 239000004571 lime Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 5
- 230000016615 flocculation Effects 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000004537 pulping Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 229920002488 Hemicellulose Polymers 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 150000003016 phosphoric acids Chemical class 0.000 claims description 2
- 239000010893 paper waste Substances 0.000 claims 1
- 229920005610 lignin Polymers 0.000 abstract description 3
- 239000010902 straw Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 230000003113 alkalizing effect Effects 0.000 description 1
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 235000019691 monocalcium phosphate Nutrition 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920000333 poly(propyleneimine) Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002426 superphosphate Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Fertilizers (AREA)
- Paper (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to a treatment method of black liquor of paper-making, in particular, it is applicable to comprehensive treatment and utilization of alkaline straw pulp black liquor. By adopting the treatment method, the separated lignin and pulp slag generated in the papermaking process can be used for manufacturing the fiberboard; recycling the alkali liquor; the precipitate is used to produce soluble phosphate fertilizer and is comprehensive utilized.
Description
The present invention relates to a kind for the treatment of paper-making black liquor, belong to sewage disposal technology, be particularly useful for the comprehensive regulation and the utilization of alkaline straw pulp black liquor.
The improvement of black liquid is the difficult problem of domestic and international environmental protection, general treatment process sulfuric acid, carbonic anhydride, stack gas, SO
2Deng the acidifying black liquor, extract xylogen, acid out liquid is through the recyclable a part of alkali of lime alkalization, and the problem that these treatment processs exist is that the active princlple in the black liquor fails to make full use of, and Pollution abatement is not thorough etc.
The object of the present invention is to provide a kind of method that fully utilizes black liquid, the pollution that can solve black liquid, the while can make full use of the novel method of the active princlple in the black liquor again.
Technology contents of the present invention is achieved in that
A. black liquid is acidified to pH value 2 ± 0.5 with phosphoric acid or phosphoric acid salt, adds the xylogen in the polyacrylamide flocculation black liquor again, hemicellulose and other organism, filtering separation;
B.a method 0 isolating clear liquor adds superfluous lime in 70--90 ℃ of alkalization 1--2 hour, reclaims alkali lye, thick screenings making fiberboard in separating lignin and organism and the pulping and paper-making in a method.
C. reclaim that throw out behind the alkali lye adds phosphoric acid or sulfuric acid obtains phosphate fertilizer.
In order to improve the alkali lye rate of recovery, clear liquor after a operation is handled can add lime and regulate pH value 5-6, carry out carrying out alkalinisation treatment again behind aerobic treatment or the remaining organism of anaerobically fermenting processing decomposition with active sludge, the condition of aerobic treatment is inflation 3--4 hour, the condition of anaerobically fermenting is 32--34 ℃, ferments 3--5 days.
The add-on of flocculation agent polypropylene amine is 1--5PPM in the above-mentioned treating processes, and normal temperature is handled.
Adopt papermaking treatment process of the present invention, isolated xylogen can be made fiberboard with the screenings produced in the paper-making process, the alkali lye recycling use, and throw out is used to make soluble phosphoric manure.Really accomplished comprehensive utilization.
Describe technology contents of the present invention in detail below in conjunction with embodiment.
Embodiment:
A. acid out: straw pulp black liquor H
3PO
4Or NaH
2PO
4Being acidified to pH value is about 2, cationic polyacrylamide with 300--500 about ten thousand makes xylogen and the flocculation of other organism precipitation as flocculation agent at normal temperatures, with common separation equipment such as decker or pressure filter separating lignin and other organogenous sediments, treatment effect sees Table 1.
Table 1, acid out liquid and black liquor composition be g/L relatively
The isolated xylogen of acid out and organism precipitation can be made fiberboard, the N in the acid out liquid simultaneously with thick screenings in the pulping and papermaking processes, fiber fines etc.
a +Ion is with N
aH
2PO
4Formation exist, be recyclable sodium salt owing to contain nutrient substances such as N, P in the acid out liquid, can be next step biological treatment and lay good basis.
B. decomposing organic matter: acid out liquid adds lime and regulates pH value 5--6, adopts active sludge treatment 3--4 hour, decomposes residual organic matter, BOD
5Clearance can reach 85%, and the COD clearance reaches more than 45%;
If adopt anaerobic digestion, working temperature is 32--34 ℃, and liquid residence time is 4 days, BOD
7But clearance 87%, COD clearance can reach more than 63%, for next step alkalization lays the first stone.Employing activated sludge process decomposing organic matter can improve the rate of recovery of alkali lye in the treatment process of the present invention, but the corresponding raising of processing cost.
C. alkalization: carry out in the clear liquor of alkalization process after active sludge decomposes, the alkalization condition is 115% of a theoretical amount for the lime input amount, and temperature is 70--80 ℃, and the time is 1--2 hour, and the alkalization rate can reach more than 90%.Alkali recovery is more than 60%.
D. production of phosphate fertilizer: the throw out C after will alkalizing
A3(PO
4)
2Add H
2SO
4Or H
3PO
4Produce calcium superphosphate or double superphosphate, become commodity through slaking, drying.
Claims (3)
1, a kind for the treatment of paper-making black liquor is characterized in that:
A. black liquid is acidified to pH value 2 ± 0.5 with phosphoric acid or phosphoric acid salt, adds the xylogen in the polyacrylamide flocculation black liquor again, hemicellulose and other organism, filtering separation;
B. clear liquor adds superfluous lime in 70--90 ℃ of alkalization 1--2 hour, reclaims alkali lye, and thick screenings in xylogen and other organism and the pulping and paper-making or paper waste are made fiberboard;
C. reclaim that precipitation behind the alkali lye adds phosphoric acid or sulfuric acid obtains phosphate fertilizer.
2, the treatment process of black liquid according to claim 1 is characterized in that the clear liquor after a operation is handled adds lime adjusting pH value 5--6, carry out aerobic treatment or anaerobically fermenting with active sludge, decomposing remaining organism alkalizes again, the condition of aerobic treatment is inflation 3--4 hour, the condition of anaerobically fermenting is 32--34 ℃, ferments 3--5 days.
3, the treatment process of black liquid according to claim 1 and 2, the add-on that it is characterized in that polyacrylamide is 1--5PPM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96100718A CN1059644C (en) | 1996-01-31 | 1996-01-31 | Treatment method of papermaking black liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96100718A CN1059644C (en) | 1996-01-31 | 1996-01-31 | Treatment method of papermaking black liquor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1156126A true CN1156126A (en) | 1997-08-06 |
| CN1059644C CN1059644C (en) | 2000-12-20 |
Family
ID=5116691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96100718A Expired - Fee Related CN1059644C (en) | 1996-01-31 | 1996-01-31 | Treatment method of papermaking black liquor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059644C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358811C (en) * | 2003-08-26 | 2008-01-02 | 山东泉林纸业有限责任公司 | Process for extracting lignin by acid separation |
| CN100402556C (en) * | 2006-03-03 | 2008-07-16 | 才景志 | Sodium carboxymethyl hemicellulose with paper-making black liquor as raw material and producing method thereof |
| CN102616878A (en) * | 2012-03-29 | 2012-08-01 | 上海东升新材料有限公司 | Pretreatment separating agent of straw pulping black liquor |
| CN103669071A (en) * | 2013-12-05 | 2014-03-26 | 乐山市洁宇纳米应用技术研究所 | Method for treating papermaking black liquid |
| CN103771632A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Pretreatment method for cellulosic ethanol waste fermentation broth |
| CN105000742A (en) * | 2015-07-29 | 2015-10-28 | 河南工业大学 | Waste alkali solution recycling method |
| CN108864440A (en) * | 2017-10-13 | 2018-11-23 | 济宁明升新材料有限公司 | A method of extracting lignin from alkaline pulping black liquor |
| CN108864441A (en) * | 2017-10-13 | 2018-11-23 | 济宁明升新材料有限公司 | A method of extracting lignin from reducing rules treatment fluid |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085757C (en) * | 1999-05-27 | 2002-05-29 | 孙海明 | Process for removing lignin from black liquor in making paper by soda pulping |
-
1996
- 1996-01-31 CN CN96100718A patent/CN1059644C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358811C (en) * | 2003-08-26 | 2008-01-02 | 山东泉林纸业有限责任公司 | Process for extracting lignin by acid separation |
| CN100402556C (en) * | 2006-03-03 | 2008-07-16 | 才景志 | Sodium carboxymethyl hemicellulose with paper-making black liquor as raw material and producing method thereof |
| CN102616878A (en) * | 2012-03-29 | 2012-08-01 | 上海东升新材料有限公司 | Pretreatment separating agent of straw pulping black liquor |
| CN102616878B (en) * | 2012-03-29 | 2013-08-21 | 上海东升新材料有限公司 | Pretreatment separating agent of straw pulping black liquor |
| CN103771632A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Pretreatment method for cellulosic ethanol waste fermentation broth |
| CN103669071A (en) * | 2013-12-05 | 2014-03-26 | 乐山市洁宇纳米应用技术研究所 | Method for treating papermaking black liquid |
| CN103669071B (en) * | 2013-12-05 | 2016-04-06 | 乐山市洁宇纳米应用技术研究所 | A kind of processing method of black liquid |
| CN105000742A (en) * | 2015-07-29 | 2015-10-28 | 河南工业大学 | Waste alkali solution recycling method |
| CN108864440A (en) * | 2017-10-13 | 2018-11-23 | 济宁明升新材料有限公司 | A method of extracting lignin from alkaline pulping black liquor |
| CN108864441A (en) * | 2017-10-13 | 2018-11-23 | 济宁明升新材料有限公司 | A method of extracting lignin from reducing rules treatment fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1059644C (en) | 2000-12-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |