CN204251475U - A kind of no pollution blowdown system for the treatment of black liquid - Google Patents
A kind of no pollution blowdown system for the treatment of black liquid Download PDFInfo
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- CN204251475U CN204251475U CN201420751195.9U CN201420751195U CN204251475U CN 204251475 U CN204251475 U CN 204251475U CN 201420751195 U CN201420751195 U CN 201420751195U CN 204251475 U CN204251475 U CN 204251475U
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- nano filter
- filter membrance
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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Abstract
The utility model discloses a kind of no pollution blowdown system for the treatment of black liquid, it is characterized in that, comprise black liquor storagetank (1), strainer (2), circulation groove (3), nano filter membrance device (4), secondary nano filter membrance device (5), fermentation unit (6), filtrate collection bucket (7).The no pollution blowdown system utilizing the utility model to relate to effectively can process black liquid, Separation and Recovery utilizes xylogen in black liquid and glucide, and glucide concentrated solution is carried out fermentative processing obtain butanols and organic fertilizer, final filtrate resistates does not produce secondary pollution; It is high that efficiency is easily controlled in this system operation, is convenient to realize large-scale promotion and application.
Description
Technical field
The invention belongs to black liquid process field, particularly a kind of no pollution blowdown system for the treatment of black liquid.
Background technology
Most paper mill take non-wood-fiber as raw material, and non-wood fibrous raw material mainly comprises Mierocrystalline cellulose, xylogen and the large composition of hemicellulose (i.e. poly-pentose class) three.Primary pollution source in xylogen and hemicellulose paper waste.Traditional Technologies of Black Liquor Treatment has Silvola recovery, flocculent precipitation, acid-precipitation method, activated sludge process etc.Wherein, Silvola recovery is present stage the most ripe treating paper-making black liquor, but it is more suitable to wood pulp papermaking, and be not suitable for the process of wheat straw black liquor, its reason is because viscosity is large, fiber is short, make black liquor dispersity poor, extract difficulty, cause black liquor recovery rate low, alkali collection high cost.Therefore, black digestion liquid is not administered or is not exclusively administered discharge by most of papermaking enterprise, result in serious environmental pollution.Flocculent precipitation needs to add precipitation agent, the macrobeads such as the suspended substance in black liquor and colloid are precipitated, but this method can increase resource input; Activated sludge process selects biological method to process black liquor, and the culturing sludge time is long, and not resistance to high punching press water, length consuming time, is unfavorable for Large Scale and Continuous equalization.
To sum up, traditional treatment method has larger limitation, because floor space is large, investment running cost is high, complicated operation, the reasons such as processing efficiency is low, and energy consumption is high, comprehensive reutilization weak effect do not obtain large-scale promotion and use, along with the development of science and technology, the far from abreast of the times requirement of black liquor treatment technology of existing paper industry.
Membrane separation technique is contemporary new and effective isolation technique, it is the product of multi-crossed disciplines, with traditional Comparison of separating methods, it have efficient, energy-conservation, process easily controlled, without phase change, easy to operate, all compositions be beneficial in recycle-water and water, save the energy, environmental friendliness, be convenient to amplify, be easy to the advantage such as integrated with other technologies.Application of membrane separation technology has been become the study hotspot in industry in the process of black liquid.
Summary of the invention
The object of the invention is to overcome the deficiency existed in existing Technologies of Black Liquor Treatment, a kind of no pollution blowdown system for the treatment of black liquid is provided, utilize the no pollution blowdown system that the present invention relates to effectively can process black liquid, Separation and Recovery utilizes xylogen in black liquid and glucide, and glucide concentrated solution is carried out fermentative processing obtain butanols and organic fertilizer, final filtrate resistates does not produce secondary pollution; It is high that efficiency is easily controlled in this system operation, is convenient to realize large-scale promotion and application.
In order to realize above object, the technical solution used in the present invention is: a kind of no pollution blowdown system for the treatment of black liquid, it is characterized in that, comprise black liquor storagetank (1), strainer (2), circulation groove (3), a nano filter membrance device (4), secondary nano filter membrance device (5), fermentation unit (6), filtrate collection bucket (7): described black liquor storagetank (1) is provided with fluid inlet and outlet valve, circulation groove (3), one time nano filter membrance device (4) is equipped with inlet valve and outlet valve with secondary nano filter membrance device (5), strainer (2) is provided with import and outlet, the import of described strainer (2) is connected by the outlet valve of pipeline with black liquor storagetank (1), and strainer (2) outlet is connected with circulation groove (3) inlet valve by pipeline, the inlet valve of a described nano filter membrance device (4) is connected with circulation groove (3) outlet valve by pipeline, and this pipeline is disposed with transferpump (8) and high-pressure pump (9), one time nano filter membrance device (4) outlet valve is connected with secondary nano filter membrance device (5) inlet valve by pipeline, described filtrate collection bucket (7) is connected with secondary nano filter membrance device (5) outlet valve A by pipeline, described fermentation unit (6) is connected with secondary nano filter membrance device (5) outlet valve B by pipeline, the nanofiltration membrane molecular weight cut-off that a described nano filter membrance device (4) is inner is 800, and the nanofiltration membrane molecular weight cut-off of secondary nano filter membrance device (5) inside is 150 ~ 800.
Wherein in an embodiment, a described nano filter membrance device (4) be provided with pipeline between circulation groove (3) and be connected, and pipeline is provided with by-pass valve (10).
Wherein in an embodiment, described nano filter membrance device (4) one end is connected with washing unit (11), and the other end is connected with xylogen gathering barrel (12).
Wherein in an embodiment, evaporation unit (13) is provided with between described secondary nano filter membrance device (5) and fermentation unit (6), this evaporation unit (13) is provided with inlet valve and outlet valve, the inlet valve of described evaporation unit (13) is connected with secondary nano filter membrance device (5) outlet valve B by pipeline, and the outlet valve of evaporation unit (13) is connected with fermentation unit (6) by pipeline.
Wherein in an embodiment, described strainer (2) is deep bed filter.
In sum, beneficial effect of the present invention:
(1) a kind of no pollution blowdown system for the treatment of black liquid provided by the invention, this Operation system setting has strainer, nano filter membrance device, a secondary nano filter membrance device, the three layer filtration of black liquid can be realized, isolate the suspended matters such as granule foreign, xylogen, glucide successively, comprehensive treating process is effective with recycling.
(2) a kind of no pollution blowdown system for the treatment of black liquid provided by the invention, this Operation system setting has fermentation unit, the glucide concentrated solution obtained through secondary nano filter membrance device is arranged in fermentation unit, fermentation obtains butanols and organic fertilizer, do not produce secondary pollution, meet production of environment requirement.
(3) a kind of no pollution blowdown system for the treatment of black liquid provided by the invention, this system can also arrange pipeline at one time and be connected between nano filter membrance device with circulation groove, and pipeline is provided with by-pass valve, open by-pass valve pressure release when a nano filter membrance device internal pressure is too high, prevent the nanofiltration membrane in nano filter membrance device from being broken through because pressure is excessive.
(4) a kind of no pollution blowdown system for the treatment of black liquid provided by the invention, this system can also connect washing unit a nano filter membrance device one end, the other end connected wood quality gathering barrel, carries out dialysis purifying when the concentration of xylogen concentrated solution reaches 23 ~ 25% to it.
(5) a kind of no pollution blowdown system for the treatment of black liquid provided by the invention, this system can also arrange evaporation unit between secondary nano filter membrance device and fermentation unit, carry out zymotechnique again after can first being heated by glucide concentrated solution, contribute to improving fermentation efficiency and effect.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the no pollution blowdown system for the treatment of black liquid.
Numerical reference described in Figure of description 1 is expressed as: 1, black liquor storagetank; 2, strainer; 3, circulation groove; 4, a nano filter membrance device; 5, secondary nano filter membrance device; 6, fermentation unit; 7, filtrate collection bucket; 8, transferpump; 9, high-pressure pump; 10, by-pass valve; 11, washing unit; 12, xylogen gathering barrel; 13, evaporation unit.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, elaborate to the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can implement to be much different from other modes described here, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
Embodiment 1:
Refer to Fig. 1, a kind of no pollution blowdown system for the treatment of black liquid, comprise black liquor storagetank 1, strainer 2, circulation groove 3, nano filter membrance device 4, secondary nano filter membrance device 5, evaporation unit 13, fermentation unit 6, a filtrate collection bucket 7.Wherein black liquor storagetank 1 is provided with fluid inlet and outlet valve; Circulation groove 3, nano filter membrance device 4 and secondary nano filter membrance device 5, evaporation unit 13 are equipped with inlet valve and outlet valve; Strainer 2 is deep bed filter, and it is provided with import and outlet.The import of described strainer 2 is connected by the outlet valve of pipeline with black liquor storagetank 1, and strainer 2 is exported and is connected with circulation groove 3 inlet valve by pipeline; The inlet valve of a described nano filter membrance device 4 is connected with circulation groove 3 outlet valve by pipeline, and this pipeline is disposed with transferpump 8 and high-pressure pump 9; One time nano filter membrance device 4 outlet valve is connected with secondary nano filter membrance device 5 inlet valve by pipeline; Described filtrate collection bucket 7 is connected with secondary nano filter membrance device 5 outlet valve A by pipeline; Evaporation unit 13 is provided with between described secondary nano filter membrance device 5 and fermentation unit 6, this evaporation unit 13 is provided with inlet valve and outlet valve, the inlet valve of described evaporation unit 13 is connected with secondary nano filter membrance device 5 outlet valve B by pipeline, and the outlet valve of evaporation unit 13 is connected with fermentation unit 6 by pipeline; The nanofiltration membrane molecular weight cut-off of described nano filter membrance device 4 inside is 800, and the nanofiltration membrane molecular weight cut-off of secondary nano filter membrance device 5 inside is 150 ~ 800.A described nano filter membrance device 4 be provided with pipeline between circulation groove 3 and be connected, and pipeline is provided with by-pass valve 10.Described nano filter membrance device 4 one end is connected with washing unit 11, and the other end is connected with xylogen gathering barrel 12.
The present invention relates in use specifically according to following step:
Step 1: the fluid inlet opening black liquor storagetank, black liquid flows in black liquor storagetank and precipitates and cool 8-10h; Open outlet valve and the filter inlet of black liquor storagetank, the black liquor after precipitation cooling process flows through filter and completes preliminary filtration, and the suspended substances such as granule foreign are separated;
Step 2: the inlet valve of opened filter outlets and a nano filter membrance device, starts transferpump, regulates nano filter membrance device import and top hole pressure difference to 4-6kg/cm
3treat that in film, air drains, start high-pressure pump, black liquor after preliminary filtration enters a nano filter membrance device, black liquor is at pressure with under circulating effect, the material molecule that molecular weight is less than 800 becomes filtrate through film, and the xylogen tunicle that molecular weight is greater than 800 retains, and the lignin concentration of a nano filter membrance device inside is improved constantly and obtains concentrated solution;
Preferably, in described step 2 when a nano filter membrance device internal pressure reaches 25kg/cm
3time, open a by-pass valve pressure release between nano filter membrance device and circulation groove on connecting tube, effectively prevent nanofiltration membrane from being broken through.
Step 3: open the outlet valve of a nano filter membrance device and the inlet valve of secondary nano filter membrance device, step 2 gained filtrate enters secondary nano filter membrance device, at pressure with under circulating effect, molecular weight be less than 150 water and inorganic salt molecule become filtrate through film and be discharged in filtrate collection bucket, the glucide molecule tunicle of molecular weight between 150 ~ 800 retains, and secondary nano filter membrance device inner carbohydrate material molecule concentration is improved constantly;
Preferably, dialysis purifying is carried out when the concentration of xylogen concentrated solution reaches 23 ~ 25% in described step 3, the concrete steps of dialysis purifying are open the washing unit with a nano filter membrance device UNICOM, xylogen concentrated solution is cleaned, when to concentrated solution, lignin concentration reaches more than 90%, cleaning terminates, and the concentrated solution after dialysis purifying is discharged to xylogen gathering barrel.
Step 4: discharge when secondary nano filter membrance device inner carbohydrate material molecule concentration reaches 20-25%, enter into fermentation unit, fermentation obtains butanols and residue organic fertilizer.
Preferably, first inner for secondary nano filter membrance device glucide concentrated solution is joined in evaporation unit in described step 4 heat 10-15min after enter fermentation in fermentation unit again and obtain butanols and residue organic fertilizer.First evaporate and be beneficial to raising fermentation efficiency and effect in fermentation.
Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above example just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristic can be combined by rights; These improve retouching, change or combination, or the design of invention and technical scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.
Claims (5)
1. the no pollution blowdown system for the treatment of black liquid, it is characterized in that, comprise black liquor storagetank (1), strainer (2), circulation groove (3), nano filter membrance device (4), secondary nano filter membrance device (5), fermentation unit (6), filtrate collection bucket (7): described black liquor storagetank (1) is provided with fluid inlet and outlet valve, circulation groove (3), a nano filter membrance device (4) are equipped with inlet valve and outlet valve with secondary nano filter membrance device (5), and strainer (2) is provided with import and outlet; The import of described strainer (2) is connected by the outlet valve of pipeline with black liquor storagetank (1), and strainer (2) outlet is connected with circulation groove (3) inlet valve by pipeline; The inlet valve of a described nano filter membrance device (4) is connected with circulation groove (3) outlet valve by pipeline, and this pipeline is disposed with transferpump (8) and high-pressure pump (9); One time nano filter membrance device (4) outlet valve is connected with secondary nano filter membrance device (5) inlet valve by pipeline; Described filtrate collection bucket (7) is connected with secondary nano filter membrance device (5) outlet valve A by pipeline; Described fermentation unit (6) is connected with secondary nano filter membrance device (5) outlet valve B by pipeline; The nanofiltration membrane molecular weight cut-off that a described nano filter membrance device (4) is inner is 800, and the nanofiltration membrane molecular weight cut-off of secondary nano filter membrance device (5) inside is 150 ~ 800.
2. a kind of no pollution blowdown system for the treatment of black liquid according to claim 1, is characterized in that, a described nano filter membrance device (4) be provided with pipeline between circulation groove (3) and be connected, and pipeline is provided with by-pass valve (10).
3. a kind of no pollution blowdown system for the treatment of black liquid according to claim 1, is characterized in that, described nano filter membrance device (4) one end is connected with washing unit (11), and the other end is connected with xylogen gathering barrel (12).
4. a kind of no pollution blowdown system for the treatment of black liquid according to claim 1, it is characterized in that, evaporation unit (13) is provided with between described secondary nano filter membrance device (5) and fermentation unit (6), this evaporation unit (13) is provided with inlet valve and outlet valve, the inlet valve of described evaporation unit (13) is connected with secondary nano filter membrance device (5) outlet valve B by pipeline, and the outlet valve of evaporation unit (13) is connected with fermentation unit (6) by pipeline.
5. a kind of no pollution blowdown system for the treatment of black liquid according to claim 1, is characterized in that, described strainer (2) is deep bed filter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420751195.9U CN204251475U (en) | 2014-12-04 | 2014-12-04 | A kind of no pollution blowdown system for the treatment of black liquid |
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| CN201420751195.9U CN204251475U (en) | 2014-12-04 | 2014-12-04 | A kind of no pollution blowdown system for the treatment of black liquid |
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| CN204251475U true CN204251475U (en) | 2015-04-08 |
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| CN201420751195.9U Expired - Fee Related CN204251475U (en) | 2014-12-04 | 2014-12-04 | A kind of no pollution blowdown system for the treatment of black liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358393A (en) * | 2018-03-22 | 2018-08-03 | 天津市众源环保工程有限公司 | A kind of process and dedicated unit for administering sanitary sewage and papermaking sewage |
| CN112093960A (en) * | 2020-09-01 | 2020-12-18 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
-
2014
- 2014-12-04 CN CN201420751195.9U patent/CN204251475U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358393A (en) * | 2018-03-22 | 2018-08-03 | 天津市众源环保工程有限公司 | A kind of process and dedicated unit for administering sanitary sewage and papermaking sewage |
| CN112093960A (en) * | 2020-09-01 | 2020-12-18 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
| CN112093960B (en) * | 2020-09-01 | 2021-10-29 | 北京理工大学 | Treatment method of nitrified bamboo cellulose washing wastewater |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20201204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |