CN102259938B - Reduction and recycling method for purified cotton cooking and cleaning wastewater - Google Patents
Reduction and recycling method for purified cotton cooking and cleaning wastewater Download PDFInfo
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- CN102259938B CN102259938B CN2011101281598A CN201110128159A CN102259938B CN 102259938 B CN102259938 B CN 102259938B CN 2011101281598 A CN2011101281598 A CN 2011101281598A CN 201110128159 A CN201110128159 A CN 201110128159A CN 102259938 B CN102259938 B CN 102259938B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 67
- 229920000742 Cotton Polymers 0.000 title claims abstract description 42
- 238000004140 cleaning Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000010411 cooking Methods 0.000 title abstract 6
- 239000012528 membrane Substances 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000005406 washing Methods 0.000 claims abstract description 21
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 17
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 16
- 238000001728 nano-filtration Methods 0.000 claims abstract description 12
- 238000001471 micro-filtration Methods 0.000 claims abstract description 11
- 239000003513 alkali Substances 0.000 claims abstract description 10
- 238000009835 boiling Methods 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 7
- 230000001112 coagulating effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005374 membrane filtration Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000003672 processing method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- -1 nitrogenous compound Chemical class 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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Abstract
The invention discloses a reduction and recycling method for purified cotton cooking and cleaning wastewater. The reduction of the wastewater is realized by completely separately collecting and reusing the purified cotton cooking wastewater and washing wastewater each time in multiple washing; and in wastewater recycling, a microfiltration membrane, an ultrafiltration membrane and a nanofiltration or reverse osmosis membrane are adopted for treatment, concentrated liquor of the ultrafiltration membrane is added with alkali to form alkali liquor for recycling, the alkali liquor is used for cooking the next batch of materials, concentrated liquor separated by the nanofiltration or reverse osmosis membrane is subjected to subsequent treatment for recycling, and the concentrated liquor subjected to subsequent treatment becomes cooking wastewater for the next batch of materials, effluent separated by the nanofiltration or reverse osmosis membrane is subjected to subsequent treatment, and effluent subjected to subsequent treatment reaches the standard and is discharged. Compared with the prior art, the reduction and recycling method has the advantages that: the total amount of the purified cotton cooking and cleaning wastewater is reduced by over 75 percent, the chemical oxygen demand (CODcr) is reduced by over 70 percent, the wastewater is subjected to subsequent treatment to reach the first class national standard, and wastewater subjected to subsequent treatment is discharged.
Description
Technical field
The present invention is directed to present purified cotton and produce and boiling Cleaning Wastewater processing present situation, propose a kind of decrement and recycling processing method of purified cotton boiling Cleaning Wastewater, belong to cleaner production and environmental protection technical field.
Background technology
Purified cotton (Refined cotton) be make ethers Mierocrystalline cellulose (like CMC, HEC, HPMC, MC etc.), soluble cotton (nitro-cotton) and
FMMain raw, it is widely used in national defense industry and civilian goods various fields, is described as " extraordinary industrial monosodium glutamate ".
Purified cotton is raw material with the linters; Add man-hour needs earlier through adding alkaline boiling; Remove impurity such as cotton wax in the fiber, grease, pectin class nitrogenous compound; Bleaching processing again, general production process is following: linters → boiling → washing (to pH＜9) → bleach → roll dehydration, oven dry → finished product.
Purified cotton produce the greatest problem that exists at present be pollute very serious; Pollution is from boiling and the Cleaning Wastewater of purified cotton; By linters add the dope of discharging behind the alkaline boiling, repeatedly the washing washings of discharging mixes on washing machine; Be a kind of waste water of dark red of alkalescence, be commonly called as and be " black liquor ".Black liquor alkalescence is strong, organic concentration is big, colourity is high, belongs to more hard to manage type of waste water.The black liquor water quality of domestic certain large-scale purified cotton manufacturing enterprise is as shown in table 1 below:
The purified cotton boiling Cleaning Wastewater situation that domestic certain enterprise of table 1 is present
Adopt common sewage water treatment method to be difficult to make purified cotton boiling and Cleaning Wastewater to reach country's discharging secondary standard at present and (require CODcr≤135mg/L; Integrated wastewater discharge standard GB8978-1996); Can only reach fiery explosive industry standard (requiring CODcr≤300mg/L, weapon industry pollution discharge standard [fiery explosive] GB14470.1-2002).A kind of Sewage treatment systems that is used for purified cotton is disclosed like Chinese utility model patent (patent No. ZL 200720050959.1); It mainly is made up of materialization treatment system and biochemical treatment system, and the materialization treatment system comprises grille well, equalizing tank, acid out pond, air supporting settling tank, pH regulator pond, the coagulative precipitation tank that once is linked in sequence; Biochemical treatment system comprises the pond of heating, acidification hydrolization pond, anaerobic pond, one-level Aerobic Pond, secondary aerobic pond, the final deposition pool that once is linked in sequence; And the coagulative precipitation tank in the materialization system is connected with the pond of heating of biochemical treatment system.This utility model patent is used for the Sewage treatment systems of purified cotton, and water outlet reaches " weapon industry pollution discharge standard " (fiery explosive) (GB14470.1-2002), but does not reach " integrated wastewater discharge standard " (GB8978-1996) secondary standard.
Document [Yin Kun, the comprehensive regulation of pollutent during purified cotton produces, Jiangsu environmental science and technology; 2006,19 (3): 28-30] propose: the part black digestion liquid of purified cotton is used for the desulfurization and dedusting of boiler smoke, utilizes the acid composition in the flue gas that black liquor is carried out neutralizing treatment; Reduce black liquor neutralizing treatment expense,, utilize the waste heat of boiler smoke at last with black digestion liquid and wash water centralized collection; Evaporation concentration; Finally be used for boiler and mix the coal burning, each item index all reaches " integrated wastewater discharge standard " (GB8978-1996) secondary standard after the wastewater treatment, but this method only is applicable to the small-scale manufacturing enterprise that the waste water total amount is few; And for the enterprise that reaches thousands of tons of even up to ten thousand tons of purified cotton waste water every day, evaporation concentration can't realize.
Summary of the invention
Technical problem to be solved by this invention is not enough to above-mentioned prior art, and a kind of decrement of purified cotton boiling Cleaning Wastewater and the method for recycling treatment are provided.
The decrement of purified cotton boiling Cleaning Wastewater and the method for processing comprise the decrement of waste water and the recycling processing method of waste water.
1, the decrement method of purified cotton boiling Cleaning Wastewater:
A kind of decrement method of purified cotton boiling Cleaning Wastewater, the decrement that it is characterized in that waste water are to be used for realizing through boiling waste water of purified cotton and the whole single collection of washes each time in repeatedly washing being handled, repeatedly being made.
Described waste water repeatedly uses, and is reversely to use successively: the N time washes of this batch of material, employing be the N+1 time washes going up batch of material, the while also is the N-1 time washes of following batch of material.Like the 1st washes of this batch of material, the 2nd of batch of material the washes in the employing also is the boiling waste water of following batch of material.For in the waste water decrement, guarantee the washing effect of Ph＜9, what last 1 time or 2 bath wateies of every batch of material adopted is the clear water that rolls dewatering and recovery, and can according to circumstances determine whether in clear water, add acid, to reduce the pH value after the purified cotton washing.
The boiling waste water of every batch of material by the 1st washes of the last batch of material that is reclaimed, utilizes liquid to form with the boiling waste water reclaiming cycle of treatment of last batch of material.
2, the recycling processing method of waste water
A kind of recycling processing method of purified cotton boiling Cleaning Wastewater; It is characterized in that it is to adopt multistage film to carry out that waste water reclaiming is handled; Can adopt microfiltration membrane, ultra-filtration membrane and nf membrane or adopt microfiltration membrane, ultra-filtration membrane and reverse osmosis membrane, processing order is microfiltration membrane → ultra-filtration membrane → nf membrane or microfiltration membrane → ultra-filtration membrane → reverse osmosis membrane.
Described waste water reclaiming is handled, and comprising: (1) adds the recycle of ultra-filtration membrane liquid concentrator alkali preparation becoming alkali lye and is used for the boiling of batch of material down.(2) liquid concentrator of nanofiltration or reverse osmosis membrane separation recycles after subsequent disposal, becomes the boiling waste water of batch of material down.(3) product water qualified discharge after subsequent disposal of nanofiltration or reverse osmosis membrane separation;
The subsequent disposal of described nanofiltration or reverse osmosis membrane separation liquid concentrator is liquid concentrator to be regulated ph value, dosing coagulating sedimentation, filtration through adding acid, recycle behind the xylogen in the removal water;
Described nanofiltration or reverse osmosis membrane separation are produced the subsequent disposal of water, are membrane sepn to be produced water adopt according to the particular case of its COD, pH value and add acid and regulate ph value, and biochemical, materialization is handled and reduced COD, reach the national qualified discharge behind 1 grade standard that discharges.
Compared with prior art, behind employing the present invention: (1) can make purified cotton waste water total amount reduce more than 75%, and the decrement effect very significantly; (2) the purified cotton waste water COD cr after the recycling treatment reduces more than 70%, qualified discharge after can easily reaching 1 grade of emission standard of country after the subsequent disposal.
Description of drawings
Fig. 1 is the decrement synoptic diagram of purified cotton boiling Cleaning Wastewater;
Fig. 2 is the recycling treatment synoptic diagram of purified cotton boiling waste water.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.Further specify the present invention and more specifically definite, but under any condition, regard accompanying drawing to scope restriction of the present invention as through claim:
Fig. 1 is extremely shown in Figure 2 to be process flow sheet of the present invention, and wherein Fig. 1 is the decrement synoptic diagram of purified cotton boiling Cleaning Wastewater, and Fig. 2 is the recycling treatment synoptic diagram of purified cotton boiling waste water.Note that under any condition and do not regard 6 times among Fig. 1 washings as restriction washing times of the present invention.
Shown in Fig. 1-2, the decrement method of purified cotton boiling Cleaning Wastewater comprises adding the alkali lye boiling, discharging boiling waste water, whole single collection of each washing in the washing repeatedly through pulp-extruding machine, reverse repeated use of linters:
1) 2 of batch of material washess carry out 1 washing in the employing, and 1 washes is handled rear section recycle part with the boiling waste water reclaiming and all collected wastewater disposal basin 1, becomes the boiling waste water that descends batch of material through pulp-extruding machine;
2) 3 of batch of material washess carry out 2 washings in the employing, and 2 times washes is collected wastewater disposal basin 2, become 1 washes of batch of material down;
3) 4 of batch of material washess carry out 3 washings in the employing, and 3 times washes is collected wastewater disposal basin 3, become 2 washess of batch of material down;
4) 5 of batch of material washess carry out 4 washings in the employing, and 4 times washes is collected wastewater disposal basin 4, become 3 washess of batch of material down;
5) 6 of batch of material washess carry out 5 washings in the employing, and 5 times washes is collected wastewater disposal basin 5, become 4 washess of batch of material down;
6) recycle-water that rolls dehydration in the employing after the batch of material bleaching carries out 6 washings, and 6 times washes is collected wastewater disposal basin 6, becomes 5 washess of batch of material down;
7) washing post-bleach, obtain the purified cotton finished product after rolling dehydration, oven dry, reclaim, be used for 6 times of batch of material down and wash and use clear water rolling the clear water deviate from.
Shown in Fig. 1-2, the recycling processing method of purified cotton boiling waste water comprises micro-filtration, ultrafiltration, nanofiltration or reverse osmosis membrane separation:
1) the micro-filtration water outlet of boiling waste water is advanced ultra-filtration membrane through pump and is separated, and the ultra-filtration membrane dope adds alkali and is formulated as the boiling that alkali lye is used for following batch of material;
2) ultra-filtration membrane produces that water advances nf membrane through pump or reverse osmosis membrane carries out membrane sepn, and membrane sepn concentrates liquid, is discharged to wastewater disposal basin 1 recycle after treatment;
3) membrane sepn produces water qualified discharge after treatment.
Embodiment:
Table 2 is the effect comparison before and after certain domestic purified cotton manufacturing enterprise embodiment of the present invention:
Effect comparison before and after table 2 the present invention implements
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (1)
1. the decrement of a purified cotton boiling Cleaning Wastewater and the method for recycling treatment is characterized in that: the decrement of waste water is to be used for realizing through boiling waste water of purified cotton and the whole single collection of washes each time in the washing repeatedly being handled, repeatedly being made; The repeatedly use that described single collection is handled waste water is reversely to use successively: the N time washes of this batch of material, employing be the N+1 time washes going up batch of material, the while also be under the N-1 time washes of batch of material; It is to adopt multistage film to carry out that waste water reclaiming is handled, and can adopt microfiltration membrane, ultra-filtration membrane and nf membrane maybe can adopt microfiltration membrane, ultra-filtration membrane and reverse osmosis membrane, and processing order is microfiltration membrane → ultra-filtration membrane → nf membrane or microfiltration membrane → ultra-filtration membrane → reverse osmosis membrane; Described waste water reclaiming is handled, and comprising: (1) adds the recycle of ultra-filtration membrane liquid concentrator alkali preparation becoming alkali lye and is used for the boiling of batch of material down; (2) liquid concentrator of nanofiltration or reverse osmosis membrane separation recycles after subsequent disposal, becomes the boiling waste water of batch of material down; (3) product water qualified discharge after subsequent disposal of nanofiltration or reverse osmosis membrane separation; The subsequent disposal of described nanofiltration or reverse osmosis membrane separation liquid concentrator is through adding acid for adjusting pH value, dosing coagulating sedimentation, filtration, recycle behind the xylogen in the removal water to liquid concentrator; Described nanofiltration or reverse osmosis membrane separation are produced the subsequent disposal of water, are membrane sepn to be produced water adopt according to the particular case of its COD, pH value and add acid for adjusting pH value, and biochemical, materialization is handled and reduced COD, reach country and discharge qualified discharge behind 1 grade standard.
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| CN2011101281598A CN102259938B (en) | 2011-05-17 | 2011-05-17 | Reduction and recycling method for purified cotton cooking and cleaning wastewater |
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| CN2011101281598A CN102259938B (en) | 2011-05-17 | 2011-05-17 | Reduction and recycling method for purified cotton cooking and cleaning wastewater |
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| CN102259938B true CN102259938B (en) | 2012-11-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102963994B (en) * | 2012-11-26 | 2014-08-20 | 宜宾海丝特纤维有限责任公司 | Treatment method of waste alkali liquor in production of viscose fibers |
| CN105484085A (en) * | 2015-09-23 | 2016-04-13 | 四川北方硝化棉股份有限公司 | Two-segment continuous squeezing washing method for refined cotton |
| CN105329958B (en) * | 2015-11-20 | 2018-05-04 | 四川北方硝化棉股份有限公司 | The recovery method of flocking is nitrified in a kind of nitrocotton dehydration waste water |
| CN105502715A (en) * | 2015-11-30 | 2016-04-20 | 无锡新德印染制品有限公司 | Method for recovering dye and dispersing agent in printing and dyeing wastewater |
| CN112093960B (en) * | 2020-09-01 | 2021-10-29 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
| CN112390448A (en) * | 2020-09-01 | 2021-02-23 | 江西吉润花炮新材料科技有限公司 | Treatment method of nitrified bamboo cellulose alkali cooking wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034525A (en) * | 1988-01-28 | 1989-08-09 | 重庆市环境保护工具设计研究所 | The decoloring method of papermaking, ramie, purified cotton black digestion liquid |
| CN101205105A (en) * | 2007-12-18 | 2008-06-25 | 中国兵器工业第五二研究所 | Regeneration treatment and cyclic utilization method of printing and dyeing wastewater |
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2011
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034525A (en) * | 1988-01-28 | 1989-08-09 | 重庆市环境保护工具设计研究所 | The decoloring method of papermaking, ramie, purified cotton black digestion liquid |
| CN101205105A (en) * | 2007-12-18 | 2008-06-25 | 中国兵器工业第五二研究所 | Regeneration treatment and cyclic utilization method of printing and dyeing wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 王锡元.置换洗浆过程及系统的优化(下).《轻工机械》.1996,(第01期),3-6、13. * |
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