CN103043849A - Method for recycling wastewater from papermaking without discharging - Google Patents
Method for recycling wastewater from papermaking without discharging Download PDFInfo
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- CN103043849A CN103043849A CN2012104896724A CN201210489672A CN103043849A CN 103043849 A CN103043849 A CN 103043849A CN 2012104896724 A CN2012104896724 A CN 2012104896724A CN 201210489672 A CN201210489672 A CN 201210489672A CN 103043849 A CN103043849 A CN 103043849A
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- wastewater
- sludge
- pond
- fiber
- settling
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- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007599 discharging Methods 0.000 title abstract description 5
- 238000004064 recycling Methods 0.000 title abstract 4
- 239000010802 sludge Substances 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000006228 supernatant Substances 0.000 claims abstract description 10
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 5
- 230000001954 sterilising effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000123 paper Substances 0.000 claims description 13
- 238000005273 aeration Methods 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 241000274582 Pycnanthus angolensis Species 0.000 claims description 3
- 238000009313 farming Methods 0.000 claims description 3
- 239000011087 paperboard Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 210000003608 fece Anatomy 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000010871 livestock manure Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Paper (AREA)
Abstract
The invention relates to a method for recycling the wastewater from papermaking without discharging, comprising the following steps of: (a) pretreating the wastewater from papermaking: recovering the paper pulp in the wastewater by filtering, removing the fiber in the wastewater to guarantee the paper-pulp recovering amount and the effluent quality and reduce the load of the subsequent process, recycling the recovered fiber for production, feeding the left fiber into a physical, chemical and biochemical system, and treating physically, chemically and biochemically; and (b) discharging the wastewater into an aerating pond, treating further, discharging the biochemical sludge and the wastewater into a settling pond, settling in the settling pond, feeding the wastewater into a stabilizing pond, sterilizing by static electricity for recycling, making one part of the settled sludge reflow into the aerating pond, feeding the other part of sludge into a sludge storing pond, settling in the sludge storing pond, returning a supernatant into the aerating pond, storing the sludge for a long time, and transporting outwards to serve as the farmyard manure. The method has the advantages that the capital expense and the operation expense can be saved, the pollutant in the wastewater can be removed, the least energy is consumed, the wastewater from papermaking can be recycled without being discharged, and the enterprises can gain high economic benefit with low investment.
Description
Technical field
The present invention relates to the method for paper water circulation recover zero discharge, belong to the paper-making technology field.
Background technology
China is a country that water resources is very short, and the occupancy volume per person of water resources only is 2100M
3Be about World Water resource occupancy volume per person's 1/4, and traditional paper industry is the industry that consumes in a large number water resources, the average water consumption of ton slurry and ton paper is more than 5 times of international most advanced level, be exactly a large amount of dischargings of papermaking wastewater in addition, cause serious environmental pollution.Add up according to environmental protection in 2000, above 4119 papermaking in county and county and paper product enterprise wastewater total emission volumn are 35.3 hundred million tons, account for 18.2% of national industrial total release, wherein the qualified discharge amount is 1,900,000,000 tons, account for 53.8% of papermaking total release, chemical oxygen demand is 287.7 ten thousand tons in the waste discharge, accounts for 40.8% of China's technical chemistry oxygen-consumption total release, and is very serious to environmental influence.
Summary of the invention
The objective of the invention is, for overcoming traditional paper industry to the severe contamination phenomenon of environment, preserve the ecological environment, a kind of method of paper water circulation recover zero discharge is provided, be used for papermaking enterprise production treating processes.
Method of the present invention is:
The method of described paper water circulation recover zero discharge, the method step is:
A. the paper Wastewater Pretreatment adopts filter method that the paper pulp in the waste water is reclaimed, and reclaims use equipment and comprises that screen cloth is 80～100 order slanted screens, common rotary filter, remove first the fiber in the waste water, guarantee yield and the effluent quality of slurry, reduce the load of subsequent technique, the fiber that reclaims is back to production, remaining waste water stops in short-term through pump well, filters through 30～60 order fine screen mesh again, removes fiber fines, a part is delivered to the clean water basin reuse, and screenings is used for the boxboard interlayer;
B. materialization, biochemical treatment, after pretreated waste water drains into the further processing of aeration lagoon, biochemical sludge and water are drained into the settling pool supernatant, water enters stabilization pond reuse behind electrostatic sterilization after the supernatant, the sludge part of settling pool precipitation is back to the aeration tank, and excess sludge advances sludge storage pool, after precipitating in sludge storage pool, supernatant liquor returns the aeration tank, and running farming is fertile outside after long storage time uses for mud.
The beneficial effect of the inventive method is: aeration efficient is high, saves capital cost, is conducive to dirt removal in the waste water, and energy consumption is low, saves working cost, and the paper waste water circulation is used, and water resources is saved in zero release, and is free from environmental pollution.
Embodiment
The present invention is described in detail with embodiment for the below:
The method of paper water circulation recover zero discharge of the present invention comprises pre-treatment, Physiochemical and biochemical processing, and wherein pretreated purpose is the fiber that reclaims in the paper waste water, reduces the biochemical system load.Pretreated method is to adopt filter method that the paper pulp in the waste water is reclaimed, reclaim use equipment and comprise slanted screen screen cloth 80～100 orders, common rotary filter, remove the fiber in the waste water, guarantee yield and the effluent quality of slurry, this slanted screen screen cloth can reach more than 90% to the clearance of suspended substance and macrobead foreign material, reduce the load of subsequent technique, the recycled fiber reuse is produced, and remaining waste water stops in short-term through pump well again, filters through 30～60 order fine screen mesh, remove fiber fines, the reuse of part clean water basin, screenings is used for the boxboard folder, and all the other enter the Physiochemical and biochemical system and carry out materialization, biochemical treatment, after being about to above-mentioned pretreated waste water and draining into aeration lagoon and further process, biochemical sludge and water are drained into the settling pool supernatant, and water enters stabilization pond and gives birth to reuse through electrostatic sterilization after the supernatant, and the sludge part of settling pool precipitation is back to the aeration tank, excess sludge advances sludge storage pool, after the precipitation, supernatant liquor returns the aeration tank in sludge storage pool, and mud is done the fertile use of farming after long storage time.The present invention can save energy, lowers consumption, subtracts dirt, synergy, effectively administers the water that produces in the paper process and pollutes, and sewage zero-discharge makes enterprise obtain higher economic benefit with less investment.
Claims (1)
1. the method for a paper water circulation recover zero discharge, it is characterized in that: the method step is:
A. paper Wastewater Pretreatment, adopt filter method that the paper pulp in the waste water is reclaimed, reclaim use equipment and comprise slanted screen screen cloth 80～100 orders, common rotary filter, remove the fiber in the waste water, guarantee yield and the effluent quality of slurry, reduce the load of subsequent technique, the recycled fiber reuse is produced, and remaining waste water stops in short-term through pump well again, filters through 30～60 order fine screen mesh, remove fiber fines, the reuse of part clean water basin, screenings is used for the boxboard interlayer, and all the other enter the Physiochemical and biochemical system and carry out materialization, biochemical treatment; B. materialization, biochemical treatment, after pretreated waste water drains into the further processing in aeration tank, biochemical sludge and water are drained into the settling pool supernatant, water enters stabilization pond and gives birth to reuse through electrostatic sterilization after the supernatant, the sludge part of settling pool precipitation is back to the aeration tank, and excess sludge advances sludge storage pool, after precipitating in sludge storage pool, supernatant liquor returns the aeration tank, and mud is done the fertile use of farming after long storage time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104896724A CN103043849A (en) | 2012-11-27 | 2012-11-27 | Method for recycling wastewater from papermaking without discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104896724A CN103043849A (en) | 2012-11-27 | 2012-11-27 | Method for recycling wastewater from papermaking without discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103043849A true CN103043849A (en) | 2013-04-17 |
Family
ID=48056741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104896724A Pending CN103043849A (en) | 2012-11-27 | 2012-11-27 | Method for recycling wastewater from papermaking without discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103043849A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265153A (en) * | 2013-05-27 | 2013-08-28 | 亚太森博（山东）浆纸有限公司 | Branching treatment method of pulp paper sludge and application of branching treatment products thereof |
| CN105174607A (en) * | 2015-08-11 | 2015-12-23 | 怀宁县天元纸业有限公司 | Zero-discharge recycling method of water for paper papermaking |
| CN110498566A (en) * | 2019-08-26 | 2019-11-26 | 杭州临安桃源纸业有限公司 | The paper waste circulatory system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995010486A1 (en) * | 1993-10-13 | 1995-04-20 | Modell Environmental Corporation | Method and apparatus for treating paper mill effluent |
| CN1241539A (en) * | 1998-07-14 | 2000-01-19 | 王可祥 | Natural sewage decontaminating and reusing method |
| CN101591085A (en) * | 2008-05-29 | 2009-12-02 | 中国印钞造币总公司 | A kind of wastewater treatment and reuse technology for paper mill |
-
2012
- 2012-11-27 CN CN2012104896724A patent/CN103043849A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995010486A1 (en) * | 1993-10-13 | 1995-04-20 | Modell Environmental Corporation | Method and apparatus for treating paper mill effluent |
| CN1241539A (en) * | 1998-07-14 | 2000-01-19 | 王可祥 | Natural sewage decontaminating and reusing method |
| CN101591085A (en) * | 2008-05-29 | 2009-12-02 | 中国印钞造币总公司 | A kind of wastewater treatment and reuse technology for paper mill |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103265153A (en) * | 2013-05-27 | 2013-08-28 | 亚太森博（山东）浆纸有限公司 | Branching treatment method of pulp paper sludge and application of branching treatment products thereof |
| CN105174607A (en) * | 2015-08-11 | 2015-12-23 | 怀宁县天元纸业有限公司 | Zero-discharge recycling method of water for paper papermaking |
| CN110498566A (en) * | 2019-08-26 | 2019-11-26 | 杭州临安桃源纸业有限公司 | The paper waste circulatory system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130417 |