CN1150128A - paper mill sewage treatment process - Google Patents
paper mill sewage treatment process Download PDFInfo
- Publication number
- CN1150128A CN1150128A CN95118167A CN95118167A CN1150128A CN 1150128 A CN1150128 A CN 1150128A CN 95118167 A CN95118167 A CN 95118167A CN 95118167 A CN95118167 A CN 95118167A CN 1150128 A CN1150128 A CN 1150128A
- Authority
- CN
- China
- Prior art keywords
- sewage
- time
- heisui river
- treatment process
- paper mill
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000002253 acid Substances 0.000 claims abstract description 9
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- 229920005610 lignin Polymers 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 4
- 230000016615 flocculation Effects 0.000 claims description 4
- 238000005189 flocculation Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000010883 coal ash Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- -1 lignin salt Chemical class 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 150000002989 phenols Chemical class 0.000 claims 1
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000000247 postprecipitation Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000202567 Fatsia japonica Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
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
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A process for treating the sewage from paper mill includes such steps as acid educing the sewage by acid to remove lignin salt and acid, flocculating the black substance with flocculant, and aerating. The method has the advantages of about ten thousand small paper factories in China, serious sewage discharge, small investment and strong applicability.
Description
The present invention relates to a kind of with kraft process, particularly with the wastewater treatment with careless slurrying such as reed, reed bar, the bamboo tip.
At present, China rural area has ten thousand tame small-sized paper plants, mountain area papermaking aboundresources especially approximately, is the conventional industries in small towns, many small towns are regarded it as and are got rich, the road of solving employment, but its sewage discharge is serious, existing paper factory sewage disposal alkali recovery process investment is big, and small paper mill can't adopt.
The paper factory sewage disposal method that the purpose of this invention is to provide a kind of reduced investment.
Papermaking wastewater of the present invention (Heisui River) treatment process is a method of taking hierarchical synthesis to handle, sewage (Heisui River) carries out acid out with certain proportion acid for the first time, remove atraments such as acids such as lignin salt, for the second time, big organic salt of dispersity and objectionable impurities are condensed with a certain amount of flocculation agent in Heisui River for the third time.Further precipitate all kinds of objectionable impuritiess with precipitation agent immediately.Mixed precipitation and adjusting pH value then is after discharging is handled in the aeration tank.
The present invention's pulping process that closely cooperates, with strong points, industry is simple, stage treatment, less investment, instant effect.
Accompanying drawing is a process flow sheet of the present invention.
Be the embodiment of the invention below:
A sewage (Heisui River) is acidified to the PH4-6.8 acid out, enters settling tank, with lime and precipitation agent that r-, ∽-type alumina glass microballon coal ash slag etc. mixes, post precipitation drains into mixing pit; Two, three sewage (Heisui River) clad aluminum alum salt, an amount of in case of necessity poly ferro-aluminate or organic molecule polyacrylamide flocculation agent coacervation post precipitation drain into mixing pit.Discharge after mixing pit sewage delivered to aeration.
Claims (2)
1, a kind of papermaking wastewater (Heisui River) treatment process, it is characterized in that sewage (Heisui River) is used acid out for the first time, remove atraments such as phenols such as lignin salt, for the second time, Heisui River is dignified with the flocculation of a certain amount of flocculation agent for the third time, with and will discharge behind each waste water mixed aeration pond aeration with the precipitation agent precipitation.
2, technology according to claim 1, its feature one be for the first time sewage with acid out to PH4-6.8, precipitation agent is lime and r type, ∽ type alumina glass microballon coal ash slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95118167A CN1150128A (en) | 1995-11-15 | 1995-11-15 | paper mill sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95118167A CN1150128A (en) | 1995-11-15 | 1995-11-15 | paper mill sewage treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1150128A true CN1150128A (en) | 1997-05-21 |
Family
ID=5081597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95118167A Pending CN1150128A (en) | 1995-11-15 | 1995-11-15 | paper mill sewage treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1150128A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332891C (en) * | 2004-07-21 | 2007-08-22 | 清华大学 | Hydrogen peroxide catalytic decomposing method of phenol compound |
| CN102757159A (en) * | 2012-08-08 | 2012-10-31 | 南京大学 | Novel papermaking black liquor treatment method and system |
| CN106493149A (en) * | 2016-10-31 | 2017-03-15 | 张日龙 | A kind of paper mill waste preprocessing technology |
-
1995
- 1995-11-15 CN CN95118167A patent/CN1150128A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332891C (en) * | 2004-07-21 | 2007-08-22 | 清华大学 | Hydrogen peroxide catalytic decomposing method of phenol compound |
| CN102757159A (en) * | 2012-08-08 | 2012-10-31 | 南京大学 | Novel papermaking black liquor treatment method and system |
| CN106493149A (en) * | 2016-10-31 | 2017-03-15 | 张日龙 | A kind of paper mill waste preprocessing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |