CN1654373A - Process for reusing sewage from flax degumming treatment - Google Patents
Process for reusing sewage from flax degumming treatment Download PDFInfo
- Publication number
- CN1654373A CN1654373A CNA2005100106115A CN200510010611A CN1654373A CN 1654373 A CN1654373 A CN 1654373A CN A2005100106115 A CNA2005100106115 A CN A2005100106115A CN 200510010611 A CN200510010611 A CN 200510010611A CN 1654373 A CN1654373 A CN 1654373A
- Authority
- CN
- China
- Prior art keywords
- flax
- retted fibre
- retting
- water
- sewage
- 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.)
- Granted
Links
- 241000208202 Linaceae Species 0.000 title claims abstract description 39
- 235000004431 Linum usitatissimum Nutrition 0.000 title claims abstract description 39
- 239000010865 sewage Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000011282 treatment Methods 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000005273 aeration Methods 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims description 50
- 238000005188 flotation Methods 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000029087 digestion Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 229920005610 lignin Polymers 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims description 2
- 241000894007 species Species 0.000 claims description 2
- 235000018553 tannin Nutrition 0.000 claims description 2
- 229920001864 tannin Polymers 0.000 claims description 2
- 239000001648 tannin Substances 0.000 claims description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000008267 milk Substances 0.000 abstract 1
- 210000004080 milk Anatomy 0.000 abstract 1
- 235000013336 milk Nutrition 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 238000010564 aerobic fermentation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000001814 pectin Substances 0.000 description 2
- 229920001277 pectin Polymers 0.000 description 2
- 235000010987 pectin Nutrition 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000003715 nutritional status Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The flax degelatinizing sewage circulating reuse process includes leading retting sewage with pH value 5.5-6 and COD as high as 12000-13000 mg/L into settling tank, adding lime milk to regulate pH value to 7.5-8, eliminating floated matter in an air floating tank, slaking in a reactor to pH value of 6.5-7 and COD less than 1500 mg/L and returning the processed retting sewage to retting tank for reuse via the overflow port in the upper part of the reactor. After finishing retting, all the retting sewage are aerobically treated in the aerobic tank and pH value is controlled below 5 to reach the aeration requirement, and the treated clear water with COD less than 300 mg/L is returned to the retting tank for reuse. The said process can reach zero draining, reduce environmental pollution, reuse water over 90 % and reduce production cost.
Description
(1), technical field: the present invention relates to a kind of technical field of sewage,
(2), background technology: flax is the important source material crop of flax spinning industry.That flax has is nice and cool, clean, solid, durable, the washing back fast do, do not go out gauffer, indeformable, proportion is little, do not suffer worm-eaten and strengthened the retractility of yarn and outstanding feature such as dyeing firmness, very popular, therefore, flax produces and holds out broad prospects.
Flax fiber belong to phloem fiber it be by symbiosis such as Mierocrystalline cellulose and concomitant product thereof such as pectin, fat, wax, hemicellulose, inorganicss in the tough intracutaneous of numb skin, concomitant product must be deviate from as textile fiber, this is called flax retting.
At present, each produces fiber crops country the world, and flax retting is used biological degumming the most generally, and biological degumming comes unstuck with water logging again and accounts for the overwhelming majority, again based on warm water, utilizes warm water immersion to come unstuck during water logging is come unstuck, and generally claims warm water retting in China.
Warm water retting is that flax is contained in the retted fibre pond, adds entry, uses steam heating, make water temperature control at a certain temperature,, decompose the pectin substance in the straw by the fermentative action of microorganism, the destruction flax shive is connected with surrounding tissue, produces fiber-spinnable with machinery again.
Warm water immersion is the critical process that flax straw comes unstuck.The temperature of steeping fluid, pH value, stability and nutritional status are all closely related with the microbial growth growth breeding state that comes unstuck, thereby influence the length in retted fibre cycle, the yield and the quality of fiber.At present, rettery all with the method for changing water, is called " several all over water " and regulates PH in China.The shortcoming of this method is:
(1) pH value fluctuation is too big, change water after microorganism need adapt to for some time, dipping time prolongs;
(2) do not make full use of the characteristics of the aerobic and anaerobic stages of microorganism, to accelerate impregnating speed;
(3) steam with certain energy does not make full use of;
(4) rettery is the water rich and influential family, flax per ton needs about 20 tons of water, flax retting polluted water COD is up to 12000～13000mg/L, overwhelming majority flax factory all is untreated and directly discharges, the environmental pollution that causes progressively comes out with the growth that influences farm crop, and environmental protection has caused people's close attention, certainly will influence the development of flax for a long time in the past, therefore, the repeated use and the emission problem of solution flax retting polluted water are the task of top priority.
(3), technology contents
The objective of the invention is the retted fibre water in the retted fibre pond is carried out an aerobic anaerobism combination treatment,, regulate pH value in the process, COD of sewage is reached below the 300mg/L, return use, to reach the purpose of sewage zero-discharge by precipitation, air supporting, digestion reaction.
Fig. 1 is a device connection diagram of the present invention, and invention is finished according to the following steps:
(1), steam-air-water jet device is housed in the retted fibre of the present invention pond 1 and realizes aerobic fermentation, this ejector relies on the pressure of steam to suck air, is evenly distributed in the retted fibre pond, also heat is passed to water simultaneously, makes the water heating, realizes the purpose of aerobic fermentation.When, when the pH value of the retted fibre water in the retted fibre pond reached 5.5-6, the COD of retted fibre water became flax retting polluted water up to 12000～13000mg/L at this moment, this flax retting polluted water is drawn enter settling bath 2 processing;
(2), in settling bath, add precipitation agent milk of lime and regulate PH, simultaneously species precipitate such as lignin, wax, fat, protein, tannin, pigment are come out to be removed.Stop to add precipitation agent milk of lime when pH value reaches 7.5-8, flax retting polluted water enters air flotation slot 3 and handles;
(3), in air flotation slot because the effect of air supporting machine, bubble through the water column at this suspended substance, and scrape automatically in the dolly with slag scraper, transport boiler to and burn, flax retting polluted water is introduced reactor 6 and is handled;
(4), reactor body is packless empty receptacle, a large amount of anaerobic sludges are contained in its stage casing, flax retting polluted water after air supporting is sent into recycle pump 5 outlets with feeding engine 4, after mixing, both enter the bottom of reactor, carry out digestion reaction at this, this is an anaerobic treatment process, flax retting polluted water flow from bottom to top and process under the stirring of a large amount of biogas of producing, mud and sewage thorough mixing, organic matter is adsorbed decomposition, the biogas that is produced is discharged via the collection chamber of reactor head triphase separator 9, is sent to boiler combustion by Safety water seal 7.The sewage that contains suspended substance enters the settling region of triphase separator, because biogas separates from sewage, sewage is no longer disturbed and stable the rising, and constantly purify, PH drops to 6.5-7 when sewage, COD is during less than 1500mg/L, and flax retting polluted water reaches requirement, returns the retted fibre pond from reactor top overflow port and uses.The mud that its sedimentation function is good sinks to sludge suspension district, stage casing, thereby has guaranteed the abundant digestion reaction of flax retting polluted water in the reactor;
(5), after retted fibre is finished, flax is taken out from the retted fibre pond, finish a retted fibre cycle, retted fibre water in the retted fibre pond is all put into aeration tank 8 carry out the aeration processing, it is an aerobic treatment process that aeration is handled, be that steam-air-water jet device is housed in the aeration tank, the aerobic treatment that adopts the steam oxygenation and heat simultaneously, the temperature of retted fibre water reaches 31～35 ℃, PH drops to below 5, aeration reaches requirement, and the COD that handles well please use in the whole backspace retted fibre of water pond less than 300mg/L's, and beginning second is taken turns retted fibre and handled.
Advantage of the present invention is:
(1) make full use of the energy, 90% water cycle is multiplexing, and running cost is low;
(2) stable process conditions can shorten the retted fibre time, improves the flax fiber quality;
(3) this technology can reach zero release, reduces environmental pollution, is the plantation of flax footpath that breaks a new path.
(4), description of drawings: Fig. 1 is a device connection diagram of the present invention. 1 is the retted fibre pond among the figure, and the 2nd, settling bath, the 3rd, air flotation slot, the 4th, feeding engine, the 5th, recycle pump, the 6th, reactor, the 7th, Safety water seal, the 8th, aeration tank, the 9th, triphase separator, the 10th, steam-air-water jet device, C is a methane outlet.
(5) embodiment:
Flax of tying up is placed in two retted fibre ponds, each retted fibre pond adds 7 tons of flax, ferments less than the water of asking of 300mg/L with the COD that has handled well of aeration tank backspace, when PH reaches 6.0, retted fibre water flows into settling bath from top, retted fibre pond overflow port by metering, in settling bath, add per hour 2-3kg of precipitation agent, mix with stirrer, when pH value reaches 7.5-8.0, enter air flotation slot, bubble through the water column at this suspended substance, scrape automatically in the dolly, transport boiler to and burn with slag scraper.Sewage after air supporting is sent into circulating-pump outlet with feeding engine, both are mixed into the bottom of reactor, carry out digestion reaction at this, PH drops to 6.5-7 when sewage, COD is during less than 1500mg/L, and reacted sewage is discharged from the top overflow port through post precipitation, turns back to respectively in retted fibre pond of each operation, the quantity of exchanged water in retted fibre pond has also just been controlled according to the vigorous extent control pH value of retted fibre time and fermentation in each retted fibre pond.Biogas is discharged from the air chamber of triphase separator, is sent to boiler combustion by Safety water seal 7.When retted fibre was finished in the retted fibre pond in 3-4 days, flax was taken out from the retted fibre pond, the retted fibre water in the retted fibre pond is all put into the aeration tank carry out the aeration processing, and PH drops to below 5, and COD returns the retted fibre pond again and uses less than 300mg/L.
Claims (2)
1, a kind of method of sewage from flax degumming treatment round-robin is characterized in that, invention is finished according to the following steps:
(1), pH value in the retted fibre pond is reached 5.5-6, COD reaches the flax retting polluted water of 12000～13000mg/L, draws to enter the settling bath processing;
(2), add precipitation agent milk of lime and regulate PH in settling bath, simultaneously species precipitate such as lignin, wax, fat, protein, tannin, pigment are come out to be removed, stop to add precipitation agent milk of lime when pH value reaches 7.5-8, flax retting polluted water enters air flotation slot and handles;
(3), in air flotation slot because the effect of air supporting machine, at this suspended substance is bubbled through the water column, and scrapes automatically in the dolly with slag scraper, transport boiler to and burn, flax retting polluted water is introduced reactor for treatment;
(4), reactor carries out digestion reaction, PH drops to 6.5-7 when sewage, COD is during less than 1500mg/L, flax retting polluted water reaches requirement, returns the retted fibre pond from reactor top overflow port and uses;
(5), after retted fibre is finished, flax is taken out from the retted fibre pond, finish a retted fibre cycle, retted fibre water in the retted fibre pond is all put into the aeration tank carry out aerobic treatment, the temperature of retted fibre water reaches 31～35 ℃, and PH drops to below 5, and aeration reaches requirement, the COD that handles well please use in the whole backspace retted fibre of water pond less than 300mg/L's, and beginning second is taken turns the retted fibre processing and fallen.
2, the method for sewage from flax degumming treatment round-robin according to claim 1 is characterized in that, the biogas that is produced in the reactor is discharged via the collection chamber of reactor head triphase separator, is sent to boiler combustion by Safety water seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100106115A CN1298642C (en) | 2005-01-17 | 2005-01-17 | Process for reusing sewage from flax degumming treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100106115A CN1298642C (en) | 2005-01-17 | 2005-01-17 | Process for reusing sewage from flax degumming treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1654373A true CN1654373A (en) | 2005-08-17 |
| CN1298642C CN1298642C (en) | 2007-02-07 |
Family
ID=34894160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100106115A Expired - Fee Related CN1298642C (en) | 2005-01-17 | 2005-01-17 | Process for reusing sewage from flax degumming treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1298642C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747437A (en) * | 2012-07-16 | 2012-10-24 | 武汉纺织大学 | Sequencing batch type non-waste biological degumming method for ramie |
| CN104261630A (en) * | 2014-10-13 | 2015-01-07 | 湖南菲波尔生物科技有限公司 | Comprehensive utilization method of wastewater generated through ramie biological degumming and boiling (high temperature sterilization) |
| CN108821516A (en) * | 2018-07-26 | 2018-11-16 | 陈剑璋 | A kind of hospital gauze degreasing sewage-treatment plant |
| CN112126516A (en) * | 2020-09-24 | 2020-12-25 | 泰安天兴木业科技有限公司 | Biomass refining technology for producing pollution-free and zero-emission biomass |
| CN113526799A (en) * | 2021-08-03 | 2021-10-22 | 中国热带农业科学院 | Method for treating wastewater generated after degumming and cooking of pineapple leaf fibers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL58910C (en) * | 1941-03-10 | 1900-01-01 | ||
| CN1038316A (en) * | 1989-04-26 | 1989-12-27 | 吴宝和 | Quick process of retting flax with warm water |
| CN1227167C (en) * | 2003-11-04 | 2005-11-16 | 广州大学 | Anaerobic treatment - aerobic treatment - reclamation method for treating flax degumming sewage |
-
2005
- 2005-01-17 CN CNB2005100106115A patent/CN1298642C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747437A (en) * | 2012-07-16 | 2012-10-24 | 武汉纺织大学 | Sequencing batch type non-waste biological degumming method for ramie |
| CN102747437B (en) * | 2012-07-16 | 2014-06-04 | 武汉纺织大学 | Sequencing batch type non-waste biological degumming method for ramie |
| CN104261630A (en) * | 2014-10-13 | 2015-01-07 | 湖南菲波尔生物科技有限公司 | Comprehensive utilization method of wastewater generated through ramie biological degumming and boiling (high temperature sterilization) |
| CN108821516A (en) * | 2018-07-26 | 2018-11-16 | 陈剑璋 | A kind of hospital gauze degreasing sewage-treatment plant |
| CN112126516A (en) * | 2020-09-24 | 2020-12-25 | 泰安天兴木业科技有限公司 | Biomass refining technology for producing pollution-free and zero-emission biomass |
| CN113526799A (en) * | 2021-08-03 | 2021-10-22 | 中国热带农业科学院 | Method for treating wastewater generated after degumming and cooking of pineapple leaf fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1298642C (en) | 2007-02-07 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20070207 Termination date: 20100219 |