CN1067869A - The method of chemical coagulation-extraction purification utilization waste water from washing wool - Google Patents
The method of chemical coagulation-extraction purification utilization waste water from washing wool Download PDFInfo
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- CN1067869A CN1067869A CN91104396A CN91104396A CN1067869A CN 1067869 A CN1067869 A CN 1067869A CN 91104396 A CN91104396 A CN 91104396A CN 91104396 A CN91104396 A CN 91104396A CN 1067869 A CN1067869 A CN 1067869A
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- waste water
- lanolin
- wool
- water
- atlapulgite
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Abstract
The present invention relates to a kind of method of purification utilization waste water from washing wool.
This law with bodied ferric sulfate cooperate an amount of active white on, waste water from washing wool is carried out flocculation-flotation handles the treated wool-cleaning technology that is back to capable of circulation of waste water; After the sludge dewatering be that lanolin is reclaimed in solvent extraction with the normal hexane.Adopt the waste water after the present invention handles, turbidity removal rate reaches more than 96%, and color removal reaches more than 84%, and the lanolin extraction rate reached is more than 85%.This technology advantages of simple is suitable for large-scale industrial production.
Description
The present invention relates to a kind of method of purification utilization waste water from washing wool.
Waste water from washing wool is the waste water that wool roughing wool washing process produces, and its feature is that quantity discharged is big, composition is complicated, difficult treatment and contain the higher recyclable materials such as lanolin of economic worth.At present, the following several method of the many employings of the recovery of the processing of waste water from washing wool and lanolin: mechanical centrifuging, acid cleavage method and centrifugal extraction method (CN85100116).Though machinery centrifuging more general application, because it is not thorough to remove mud fat, the scouring of wool that can't circulate of the water turbidity height after the processing, the extraction yield of lanolin is low to have only 15-40%; The acid cleavage method can not obtain clarifying reuse water, and the soda acid consumption is too high, and is inadvisable economically; Shortcomings such as although centrifugal extraction method can be finished centrifugal and extraction simultaneously, and it is low to exist the lanolin extraction yield, and the extraction agent number of dropouts is bigger.
The objective of the invention is to overcome the deficiency of above-mentioned technology, provide a kind of and purify wool washing waste water, then the method for extraction recovery lanolin from mud with the composite chemical flocculation agent.This method technology is simple, purifies rate of recovery height, is particularly suitable for large-scale industrial production.
Main points of the present invention are: utilize bodied ferric sulfate (be called for short PFS poly-iron) to produce a series of multinuclear complex ions as | FE in hydrolytic process
2(OH)
3|
3+, | FE
2(OH)
2|
4+Deng absorption, bridge formation, crosslinked action, be equipped with an amount of atlapulgite, by the synergy of poly-iron and atlapulgite, strengthen absorption, the decoloring ability of flco, and make flco closely knit, thereby shortened the disengaging time of body refuse from water greatly.Waste water is clear after treatment, reuse capable of circulation.
Concrete technology of the present invention is provided by accompanying drawing.
Task of the present invention is finished like this: the waste water that wool washing machine is discharged enters among the Yuan Chi (1), send into mixing reactor (3) with water pump (2) lifting, poly-ferrous solution and atlapulgite slurry are joined in the waste water by water pump suction pipe in succession, by the quick stirring action and the waste water thorough mixing of water pump.
The effect of mixing reactor is that the suspended matter creation under the acting in conjunction of poly-iron and atlapulgite in the assurance waste water is suitable for flco to be grown up, and the condition of mutual adsorption-condensation.
The waste water that forms great quantity of floc through coagulation is sent into air-flotation separation equipment (4) by the top of mixing reactor by potential difference, carries out the solid-liquid separation operation.
The principle of dissolved air flotation is that air soluble in water is separated out atomic thin bubble under reduced pressure, by the flco in adsorption and the water be combined into one and on float to the water surface.Send constantly into scum silica frost pond (7) and realize solid-liquid separation by scraping slag equipment.The present invention is divided into the two-stage circulation with the flocculation-flotation process and carries out.Return former pond (1) through first step processed waste water and carry out second stage processing.Clear water is collected in the clean water basin (5) then, uses pump (6) to send back to the scouring of wool workshop again and reuse.
The treating processes of scum silica frost be concentrate, processed.The scum silica frost that dissolved air flotation obtains has higher water ratio, in order to make full use of automatic inspissated, and the scum silica frost pond is made dark taper, will concentrate body refuse through concentrating of certain hour by the bottom and press worry machine (9) to dewater with being pumped into sheet frame.Mud fat after the dehydration is stored in the mud fat pond (10) and further processes recovery lanolin for the lanolin recycle section.
Mud fat after the dehydration enters extractive reaction still (11), adds the normal hexane solvent of 1 to 2 times of volume at this.Be heated to 55-63 ℃ with jacket steam in the reactor, stir the lanolin in the mud fat is dissolved in the normal hexane solvent, confuse mud and advance to be pumped into filter (12) from pot bottom.Aqueous solid mud discharging after filter filters is to storage space, and the lanolin solvent that contains of removing mud advances rectifying tower (13), sends into rectifying tower middle part the 4th and layer 5 tower tray by fresh feed pump, with the ascending gas direct heat exchange.Well heater at the bottom of the first layer tower tray comes out into tower, returns at the bottom of the tower to 70-80 ℃ with steam heating again.The lower boiling normal hexane is all vaporized, and 10 layers of bubble deck rectifying separation controlled temperature 65-75 ℃, remain in the high boiling product that can not vaporize at the bottom of the tower and are the lanolin product to cat head in tower.
Cat head steams thing and is cooled to 40 ℃ from 65-75 ℃, and with indirect surface condenser cooling, cooled solvent overhead flows automatically to the backflow cylinder, advances pump and returns respectively in stream and the solvent storage tank.Lanolin comes out to contain the trace solvent and the suitable water yield at the bottom of rectifying tower, moisturely steam tower (14) with being pumped into stripping again in order to reclaim solvent and to deviate from, with the direct stripping of steam solvent is steamed from this cat head, converge the rectifying tower top distillment and enter water cooler (15) in the lump.For fear of the too high lanolin product that influences of temperature, the stripping column bottom temperature still will keep 70-80 ℃, so that the solvent vaporization is reclaimed, does not make steam turn to purpose again.At the bottom of stripping tower, send water cooler (16) cooling through hydrous wool product behind the stripping with the pump extraction, because lanolin (42 ℃) viscosity when low temperature is bigger, the requirement cooling temperature should not be low excessively, therefore at this water cooler the detour cooling water flow path is set, be not less than 50 ℃ in order to regulate the lanolin product, to keep the flowability of lanolin.Cooled product directly enters the product jar.
Production practice prove that mud fat content is the most important factor that influences the scouring of wool effect in the Mobe.Want to make scouring of wool to continue to carry out, must constantly remove mud, fat, pigment and stink, promptly so-called " four remove ".
Traditional wool-cleaning technology is that the whole waste water from washing wool of discharging more renew water again after whenever washing one class.According to the present invention, carry out purifying treatment after these waste water can being mixed, lanolin is extracted in the clear water reuse behind the sludge concentration and dewatering.
According to the present invention, composite flocculation agent is bodied ferric sulfate and atlapulgite.
According to the present invention, the processing of the flocculating and purifying of waste water from washing wool is divided into two-stage and carries out the first step, adds poly-iron and atlapulgite composite flocculation agent, makes the PH8.0-7.0 of waste water, poly-iron injected volume 2-8ml/m
3Waste water, preferably 3-6L/m
3Waste water, the atlapulgite injected volume is 0.8-1.5kg/m preferably
3Waste water.The second stage water liquid of flocculation after the first step is handled goes back to the matter pond and carries out second stage processing.PH is 7.5-6.0,7.0-6.5 preferably, and poly-iron injected volume is 2-5L/m
3Waste water, atlapulgite injected volume are 0.6-1.5g/L waste water.
Adopt above-mentioned flocculation agent injected volume according to the present invention, both can obtain higher turbidity removal rate, can obtain higher mud velocity of separation again.Reach the best purification effect in a word.Control when appropriate when condition, water outlet is the Sandy solution of complete clear.Turbidity removal rate reaches more than 96%, and colourity is but removed rate and reached more than 84%.The synthetic detergent that this solution contains wool perspiration matter and is difficult for being adsorbed by flocculation agent, thereby have the good washing effect, be suitable for cyclically utilizing.
According to the present invention, the water quality after the processing is except mud fat content is extremely low, and colourity and stink do not have remarkable accumulation yet, are suitable for cyclically utilizing.Reuse water is used for the 1st, 2,3 washing troughs, and fresh water adds from the 5th groove, replenishes the 4th groove, the adverse current scouring of wool.
According to the present invention, the lanolin extraction rate reached 85-90% in the waste water is than increasing by 1 times to 4 times with the centrifuging extraction yield.Therefore, although the flocculation agent expense is not low, lanolin rate of recovery height is enough to compensate running cost, produces remarkable economic efficiency.Extraction lanolin is convenient to reclaim solvent from solid phase (dewatered sludge), than directly extract the loss that lanolin has significantly reduced solvent from liquid phase (waste water).
Adopt the present invention, the 1st, 2,3 washing trough waste water closed cycles, only the 4th groove has a small amount of rinse water to discharge, thereby has greatly alleviated environmental pollution.
Technology advantages of simple of the present invention is more suitable for large-scale industrial production.
Claims (1)
1, a kind of method of purification utilization waste water from washing wool, the method of chemical coagulation-extraction purification utilization waste water from washing wool particularly, it is characterized in that Xian's hair waste water sent into and throw in bodied ferric sulfate and atlapulgite behind the mixing reactor as flocculation agent, flocculation process can be divided into the two-stage circulation to be finished;
A. first step flocculation treatment is that every cubic metre of waste water is thrown in bodied ferric sulfate 2-8 liter, and atlapulgite 0.5-3.0 kilogram makes the pH value of waste water reach 8.0-7.0,
B. second stage flocculation treatment is that every cubic metre of waste water is thrown in bodied ferric sulfate 2-5 liter, and atlapulgite 0.6-1.5 kilogram makes the pH value of waste water reach 7.5-6.0, gets clarifying reuse water,
C. the mud fat after dewatering is sent into the extractive reaction still, adds normal hexane as extraction agent, and volume dosed to 55-63 ℃, gets lanolin with steam-heated cal(l)andria than being 1:1-2 after rectifying separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104396A CN1026575C (en) | 1991-06-27 | 1991-06-27 | Chemical coagulation-extraction method for purification and utilization of waste water from washing wool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91104396A CN1026575C (en) | 1991-06-27 | 1991-06-27 | Chemical coagulation-extraction method for purification and utilization of waste water from washing wool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1067869A true CN1067869A (en) | 1993-01-13 |
| CN1026575C CN1026575C (en) | 1994-11-16 |
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ID=4906590
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91104396A Expired - Fee Related CN1026575C (en) | 1991-06-27 | 1991-06-27 | Chemical coagulation-extraction method for purification and utilization of waste water from washing wool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026575C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056174C (en) * | 1995-09-29 | 2000-09-06 | 榆林高等专科学校 | Technology for recovery of wool grease by flocculating salting out-extracting |
| CN102161524A (en) * | 2011-01-18 | 2011-08-24 | 北京服装学院 | Method for regenerating and recycling wool scouring wastewater |
| CN101591048B (en) * | 2007-05-23 | 2012-11-21 | 孙成义 | Multi-cyclic treatment method for wool scouring wastewater |
| CN103555428A (en) * | 2013-10-30 | 2014-02-05 | 南京求是化工工程有限公司 | Method for extracting wool fat in wool-scouring wastewater sludge by extractive distillation |
| CN105217900A (en) * | 2015-11-17 | 2016-01-06 | 梅庆波 | A kind for the treatment of process of Pb-Zn deposits beneficiation wastewater |
-
1991
- 1991-06-27 CN CN91104396A patent/CN1026575C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056174C (en) * | 1995-09-29 | 2000-09-06 | 榆林高等专科学校 | Technology for recovery of wool grease by flocculating salting out-extracting |
| CN101591048B (en) * | 2007-05-23 | 2012-11-21 | 孙成义 | Multi-cyclic treatment method for wool scouring wastewater |
| CN102161524A (en) * | 2011-01-18 | 2011-08-24 | 北京服装学院 | Method for regenerating and recycling wool scouring wastewater |
| CN102161524B (en) * | 2011-01-18 | 2013-11-20 | 北京服装学院 | Method for regenerating and recycling wool scouring wastewater |
| CN103555428A (en) * | 2013-10-30 | 2014-02-05 | 南京求是化工工程有限公司 | Method for extracting wool fat in wool-scouring wastewater sludge by extractive distillation |
| CN103555428B (en) * | 2013-10-30 | 2015-09-23 | 南京求是化工工程有限公司 | A kind of extracting rectifying extracts the method for lanolin in waste water from washing wool mud |
| CN105217900A (en) * | 2015-11-17 | 2016-01-06 | 梅庆波 | A kind for the treatment of process of Pb-Zn deposits beneficiation wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1026575C (en) | 1994-11-16 |
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