CN1986460A - Process of treating waste water from artificial leather base cloth production - Google Patents
Process of treating waste water from artificial leather base cloth production Download PDFInfo
- Publication number
- CN1986460A CN1986460A CNA2006101554096A CN200610155409A CN1986460A CN 1986460 A CN1986460 A CN 1986460A CN A2006101554096 A CNA2006101554096 A CN A2006101554096A CN 200610155409 A CN200610155409 A CN 200610155409A CN 1986460 A CN1986460 A CN 1986460A
- Authority
- CN
- China
- Prior art keywords
- waste water
- base cloth
- artificial leather
- leather base
- cloth production
- 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.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004744 fabric Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000002649 leather substitute Substances 0.000 title claims abstract description 25
- 238000004062 sedimentation Methods 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- 230000001112 coagulating effect Effects 0.000 claims abstract description 7
- 239000002585 base Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000015271 coagulation Effects 0.000 claims description 21
- 238000005345 coagulation Methods 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 239000000701 coagulant Substances 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000011001 backwashing Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 230000000813 microbial effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000020477 pH reduction Effects 0.000 claims description 5
- 238000000247 postprecipitation Methods 0.000 claims description 5
- 239000010865 sewage Substances 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000009287 sand filtration Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 159000000007 calcium salts Chemical class 0.000 abstract description 3
- 235000003891 ferrous sulphate Nutrition 0.000 abstract description 3
- 239000011790 ferrous sulphate Substances 0.000 abstract description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000006071 cream Substances 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 230000002906 microbiologic effect Effects 0.000 abstract 1
- 238000004043 dyeing Methods 0.000 description 8
- 239000010985 leather Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000008235 industrial water Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 238000003911 water pollution Methods 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004065 wastewater treatment 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
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The process of treating waste water from artificial leather base cloth production includes the following steps: homogenizing waste water in an equalization pond, coagulating sedimentation with ferrous sulfate lime cream to eliminate most of the organic pollutant, acidifying and hydrolyzing to lower the pH value and biochemical property, eliminating partial calcium salt in the intermediate settling tank to lower the hardness of waste water and eliminating some suspended matter and fallen microbiological membrane, and final biological oxidation in the biologically contacting oxidation pond to eliminate un-degraded organic pollutant from the waste water. The process has high COD eliminating rate and high decolorizing effect, and is suitable for treating various kinds of dying waste water.
Description
(1) technical field
The present invention relates to a kind of processing and reuse method of waste water, specifically relate to a kind of treatment process of waste water from artificial leather base cloth production and reclaim using method.
(2) background technology
Leather base cloth manufacturing enterprise belongs to the water rich and influential family of each department, and the water quality of its waste water, the water yield fluctuate very big with production technique, and instantaneity is very strong, organic contamination substrate concentration height, and alkalescence is big, and colourity is dark, and biodegradability is relatively poor, complicated component.It is up to standard that these features of waste water directly influence the processing of enterprise wastewater.At present, the wastewater treatment of much removing from office base cloth enterprise does not all reach national specified discharge standard, and the more impossible reuse aspect that relates to waste water exists contaminated wastewater and the useless problem of water wave at leather base cloth production field.
(3) summary of the invention
The purpose of this invention is to provide a kind of waste water from artificial leather base cloth production treatment process, meet national specified discharge standard when making the discharge of wastewater after the processing.
Another object of the present invention is to make the recyclable application of the waste water from artificial leather base cloth production of handling.
For realizing the object of the invention, the skill that the present invention adopts is stated scheme and is: a kind of treatment process of waste water from artificial leather base cloth production comprises following processing step:
(1) waste water is carried out the one-level precipitation through flowing into the one-level coagulative precipitation tank after the even water quality, coagulating agent is FeSO
4, control coagulation pH is 11～12;
(2) waste water through the one-level post precipitation enters oxygen compatibility pool and stops 6～8h, and acidifying is hydrolyzed; Concrete oxygen compatibility pool such as hydrolysis acidification pool.
(3) waste water through acidication flows into the microbial film that the intermediate sedimentation pond is removed impurity and come off, and surface load is about 0.5～0.8m
3/ m
2H;
(4) waste water after the precipitation process of intermediate sedimentation pond enters biological contact oxidation pond, two-stage coagulation settling tank more successively, and the coagulating agent of described two-stage coagulation settling tank is Al
2(SO4)
3With polymerize aluminum chloride be the mixture of 6.7～10: 1 ratio combination in mass ratio, preferred Al
2(SO4)
3With polymerize aluminum chloride be 8～9: 1 by mass ratio, coagulation pH is 6～7.
Technical scheme provided by the invention is a kind of treatment process of removing from office the base cloth dyeing waste-water, at first adopt the water quality of the even different operation leather base cloth waste water of equalizing tank, with ferrous sulfate milk of lime coagulating sedimentation technology the most of organism in the waste water is removed by the method for coagulating sedimentation then, pass through acidification hydrolization again, reduce the pH value and the biochemical of waste water, waste water after the acidifying enters an intermediate sedimentation pond, the part calcium salt can be removed, reduce the hardness of waste water, the microbial film that can remove some other suspended matter and come off in addition, in the water that settles out enter biological contact oxidation pond, can be by biological oxidation with undegradable organic matter removal in the waste water, this waste water need just can reach " textile dyeing and finishing industrial water pollution emission standard " (GB4287-1992) I grade standard by coagulation air-float once more.
The waste water that aforesaid method the was handled waste water after biological activated carbon filter is handled again can reach " miscellaneous domestic water quality standard " CJ/T 48-1999.Concrete waste water from artificial leather base cloth production treatment process comprises that also the waste water of step (5) after the two-stage coagulation settling tank is handled is again through sand filter, gac biological filter advanced treatment.
Matting during the waste water reclamation that described step (5) was handled is applied to dye, the preparation of sewage disposal medicament, greening or pressure filter flushing.
Filtering velocity＜the 2.0m/h of the described sand filtration of described step (5), the filtering velocity＜1.0m/h of described biological activated carbon filter.
During described step (5) advanced treatment, the filtering velocity＜2.0m/h of sand filter; Filtering velocity＜the 1.0m/h of biological activated carbon filter, the residence time 0.5～1h, air demand is 3～4: 1 by gas-water ratio, back washing strength is 8～10L/ (m
2S), backwashing time is 10～20min.
The present invention is exactly processing and the middle water recycling method that a kind of waste water from artificial leather base cloth production is provided at the problems referred to above, this method technology is simple, COD clearance height, decoloring ability is strong, waste water after the secondary materialization is handled can reach " textile dyeing and finishing industrial water pollution emission standard " I grade standard (GB4287-1992), waste water part after the secondary materialization is handled can directly be discharged, other remaining waste water are through sand filter, can reach " miscellaneous domestic water quality standard " CJ/T 48-1999 after the biological activated carbon filter advanced treatment, can be back to the matting in the dyeing, the preparation of sewage disposal medicament, greening, pressure filter flushing etc.
The treatment process of waste water from artificial leather base cloth production provided by the invention has following advantage:
(1) COD clearance height of the present invention, good decolorizing effect is applicable to the processing of various dyeing waste waters, can reduce pollution, the protection environment.
(2) processing costs is lower, and is simple to operate, and operational management is convenient.
(3) the advanced treatment water outlet reaches miscellaneous domestic water quality standard, realizes useless Water reuse, can save a large amount of tap water, has solved the problem of water scarcity.
Generally speaking, the method for waste water from artificial leather base cloth production provided by the invention had both solved the pollution of waste water from artificial leather base cloth production, had realized that again the resource utilization of waste water is utilized again, thereby reached economic benefit, social benefit and environmental benefit three's organic unity.
(4) description of drawings
Fig. 1 removes from office base cloth wastewater to reach standard processing technological flow;
Fig. 2 removes from office the waste water advanced processing of base cloth (reuse) technical process.
(5) embodiment
Below with specific embodiment technical scheme of the present invention is described, but protection scope of the present invention is not limited thereto:
Embodiment 1
The treatment process of waste water from artificial leather base cloth production, undertaken by following processing step:
(1) waste water is carried out the one-level precipitation through flowing into the one-level coagulative precipitation tank after the even water quality, coagulating agent is FeSO
4, control coagulation pH is 11～12;
(2) waste water through the one-level post precipitation enters oxygen compatibility pool (hydrolysis acidification pool) and stops 8h, and acidifying is hydrolyzed;
(3) waste water through acidication flows into the microbial film that the intermediate sedimentation pond is removed impurity and come off, surface load 0.5～0.8m
3/ m
2H;
(4) waste water after the precipitation process of intermediate sedimentation pond enters biological contact oxidation pond, two-stage coagulation settling tank more successively, and the coagulating agent of described two-stage coagulation settling tank is Al
2(SO4)
3With polymerize aluminum chloride be the mixture of 6.7～10: 1 ratio combination in mass ratio, coagulation pH is 6～7.Visible Al from table 3
2(SO4)
3With polymerize aluminum chloride be that 8.9: 1 the mixture effect of ratio combination is best in mass ratio.
(5) waste water after the two-stage coagulation settling tank is handled is again through sand filter, gac biological filter advanced treatment, the filtering velocity＜2.0m/h of sand filter; Filtering velocity＜the 1.0m/h of biological activated carbon filter, residence time 1h, air demand is 3～4: 1 by gas-water ratio, back washing strength is 8～10L/ (m
2S), backwashing time is 10～20min.
Can be back to the matting in the dyeing after the advanced treatment, and the configuration of sewage disposal medicament, greening, pressure filter flushing etc.
Specifically because the raw material difference, production technique is also inequality, so the solid suspension material in the waste water from artificial leather base cloth production, organism pH value are also inequality, should need the even water quality of elder generation's process equalizing tank by this waste water; Promote through pump then, with coagulant sedimentation most of organism in the waste water is removed by coagulation sedimentation method, coagulating agent is FeSO
4, and with milk of lime control coagulation pH 11～12 (seeing Table 1); Waste water behind the one-level coagulating sedimentation enters oxygen compatibility pool (hydrolysis acidification pool), can reduce the pH value of waste water on the one hand, can improve the biochemical of waste water on the other hand; Waste water behind acidication enters an intermediate sedimentation pond, the part calcium salt can be removed, and reduces the hardness of waste water, in addition the microbial film that can remove some other suspended matter and come off; In water pH＜9 of settling out, enter biological contact oxidation pond through the waste water of medium sediment pool post precipitation, can be by the aerobic biochemical effect with undegradable organic matter removal in the waste water, the water pH that settles out during table 2 has compared handles COD to wastewater biochemical
CrThe influence of clearance; By two-stage coagulation air supporting effect, effluent quality reaches " textile dyeing and finishing industrial water pollution emission standard " (GB4287-1992) I grade standard to waste water behind bio-contact oxidation again, and coagulating agent adopts the Al of proportioning by a certain percentage
2(SO
4)
3And PAC, the mass ratio of two kinds of coagulating agent is 8: 1～9: 1 (seeing Table 3), coagulation pH is between 6～7; Waste water part through the two-stage coagulation post precipitation can directly be discharged, other remaining waste water can be back to the matting in the dyeing after sand filter, gac biological filter advanced treatment, and the configuration of sewage disposal medicament, greening, pressure filter flushing etc., filtering velocity＜the 2.0m/h of sand filtration, the filtering velocity＜1.0m/h of biological activated carbon filter.
Waste water recycling after the advanced treatment is to the painted part operation of leather base cloth, and the leather base cloth of reuse water production and the quality product of synthetic leather meet related standards after testing.
Table 1 wastewater pH and water COD
CrThe relation of clearance (ferrous sulfate dosage 1.4g/L)
| pH | COD before handling Cr(mg/L) | Handle back COD Cr(mg/L) | COD CrClearance % |
| 9.0 | 1283 | 527 | 58.92 |
| 11.0 | 1283 | 502 | 60.87 |
| 11.5 | 1283 | 467 | 63.60 |
| 12.0 | 1283 | 498 | 61.18 |
The water pH that settles out in the table 2 handles COD to wastewater biochemical
CrThe influence of clearance
| pH | COD before handling Cr(mg/L) | Handle back COD Cr(mg/L) | COD CrClearance % |
| 7.4 | 432 | 144 | 66.67 |
| 7.7 | 554 | 220 | 60.29 |
| 8.1 | 473 | 94 | 80.13 |
| 8.7 | 513 | 91 | 82.26 |
| 9.4 | 471 | 112 | 76.22 |
| 9.6 | 594 | 249 | 58.08 |
Table 3 Al
2(SO
4)
3/ PAC (mass ratio) is to bio-chemical effluent COD
CrThe influence of clearance
| Al 2(SO 4) 3/PAC | COD before handling Cr(mg/L) | Handle back COD Cr(mg/L) | COD CrClearance % |
| 5.0∶1 | 426 | 301 | 12.5 |
| 6.7∶1 | 426 | 280 | 34.3 |
| 8.9∶1 | 426 | 234 | 45.1 |
| 10.0∶1 | 426 | 278 | 34.7 |
Claims (8)
1. the treatment process of a waste water from artificial leather base cloth production is characterized in that described waste water from artificial leather base cloth production treatment process comprises following processing step:
(1) waste water is carried out the one-level precipitation through flowing into the one-level coagulative precipitation tank after the even water quality, coagulating agent is FeSO
4, control coagulation pH is 11～12;
(2) waste water through the one-level post precipitation enters oxygen compatibility pool and stops 6～8h, and acidifying is hydrolyzed;
(3) waste water through acidication flows into the microbial film that the intermediate sedimentation pond is removed impurity and come off, surface load 0.5～0.8m
3/ m
2H;
(4) waste water after the precipitation process of intermediate sedimentation pond enters biological contact oxidation pond, two-stage coagulation settling tank more successively, and the coagulating agent of described two-stage coagulation settling tank is Al
2(SO4)
3With polymerize aluminum chloride be the mixture of 6.7～10: 1 ratio combination in mass ratio, coagulation pH is 6～7.
2. the treatment process of waste water from artificial leather base cloth production as claimed in claim 1 is characterized in that, the waste water from artificial leather base cloth production treatment process comprises that also the waste water of step (5) after the two-stage coagulation settling tank is handled is again through sand filter, gac biological filter advanced treatment.
3, the treatment process of waste water from artificial leather base cloth production as claimed in claim 2 is characterized in that, the matting during the waste water reclamation that described step (5) was handled is applied to dye, the preparation of sewage disposal medicament, greening or pressure filter flushing.
4, the treatment process of waste water from artificial leather base cloth production as claimed in claim 2 is characterized in that: the filtering velocity＜2.0m/h of the described sand filtration of described step (5).
5, the treatment process of waste water from artificial leather base cloth production as claimed in claim 3 is characterized in that: the filtering velocity＜1.0m/h of the described biological activated carbon filter of described step (5).
6. the treatment process of waste water from artificial leather base cloth production as claimed in claim 3, it is characterized in that: the described coagulating agent of described step (4) is Al
2(SO4)
3With polymerize aluminum chloride be the mixture of the ratio combination of 8～9:1 in mass ratio
7. the treatment process of waste water from artificial leather base cloth production as claimed in claim 3 is characterized in that: oxygen compatibility pool is a hydrolysis acidification pool in the described step (2).
8. the treatment process of waste water from artificial leather base cloth production as claimed in claim 3 is characterized in that: during described step (5) advanced treatment, and the filtering velocity＜2.0m/h of sand filter; Filtering velocity＜the 1.0m/h of biological activated carbon filter, the residence time 0.5～1h, air demand is 3～4: 1 by gas-water ratio, back washing strength is 8～10L/ (m
2S), backwashing time is 10～20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101554096A CN1986460A (en) | 2006-12-22 | 2006-12-22 | Process of treating waste water from artificial leather base cloth production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101554096A CN1986460A (en) | 2006-12-22 | 2006-12-22 | Process of treating waste water from artificial leather base cloth production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1986460A true CN1986460A (en) | 2007-06-27 |
Family
ID=38183422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101554096A Pending CN1986460A (en) | 2006-12-22 | 2006-12-22 | Process of treating waste water from artificial leather base cloth production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1986460A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955278A (en) * | 2010-11-04 | 2011-01-26 | 广州博采生物科技有限公司 | Method for treating sewage from leather making |
| CN103523988A (en) * | 2013-09-27 | 2014-01-22 | 昆山培新服装有限公司 | Printing and dyeing wastewater treatment process |
| CN104478134A (en) * | 2014-12-16 | 2015-04-01 | 桐昆集团浙江恒通化纤有限公司 | Printing and dyeing wastewater treatment process |
-
2006
- 2006-12-22 CN CNA2006101554096A patent/CN1986460A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955278A (en) * | 2010-11-04 | 2011-01-26 | 广州博采生物科技有限公司 | Method for treating sewage from leather making |
| CN101955278B (en) * | 2010-11-04 | 2012-06-27 | 广州博采生物科技有限公司 | Method for treating sewage from leather making |
| CN103523988A (en) * | 2013-09-27 | 2014-01-22 | 昆山培新服装有限公司 | Printing and dyeing wastewater treatment process |
| CN104478134A (en) * | 2014-12-16 | 2015-04-01 | 桐昆集团浙江恒通化纤有限公司 | Printing and dyeing wastewater treatment process |
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