CN104891743A - Advanced treatment and recycling technology of printing and dyeing wastewater - Google Patents
Advanced treatment and recycling technology of printing and dyeing wastewater Download PDFInfo
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- CN104891743A CN104891743A CN201510317139.3A CN201510317139A CN104891743A CN 104891743 A CN104891743 A CN 104891743A CN 201510317139 A CN201510317139 A CN 201510317139A CN 104891743 A CN104891743 A CN 104891743A
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- reverse osmosis
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Abstract
The invention discloses an advanced treatment and recycling technology of printing and dyeing wastewater. In the technology, a wastewater collecting and adjusting tank, a biochemical aerobic system, a secondary sedimentation tank, a tertiary flocculation and sedimentation tank, an MBR membrane bioreactor, a bag filter and a reverse osmosis membrane system are adopted. According to the technology, organic matters are treated by the biochemical aerobic system to be decomposed into small molecules from macromolecules, so that the separation and purification of the reverse osmosis membrane to sewage are facilitated, and the pollution and blockage of the organic matters to a membrane component are prevented; suspended matters and turbidity can completely meet the water inflowing requirement of the membrane component of the reverse osmosis membrane through four-stage continuous filtering by the secondary sedimentation tank, the tertiary flocculation and sedimentation tank, the MBR membrane bioreactor and the bag filter; the design of the process route is economical and reasonable, and the possibility of the pollution blockage of a printing and dyeing wastewater reverse osmosis membrane treatment system can be greatly reduced.
Description
Technical field
The invention belongs to environmental technology field, relate to a kind of sewage treatment process, particularly a kind of dyeing waste water advanced treatment and reuse technology.
Background technology
Dyeing waste water has the pollution water yield greatly, and organic pollutant content is high, and alkalescence is large, change of water quality is large, not easily the feature such as biochemical, belongs to one of unmanageable trade effluent, containing dyestuff, slurry, auxiliary agent, finish, soda acid, fiber impurity, sand class material, inorganic salt etc. in waste water.The current treatment process having physico-chemical process, biochemical process, chemical method and several technique to combine for the main method for the treatment of of dyeing wastewater.Dyeing waste water can reach discharge of wastewater requirement through advanced treatment, along with the raising of environmental requirement, for making waste water reach reuse requirement, need process further by reverse osmosis membrane.Due to the organic pollutant in dyeing waste water and the many and complicated component of inorganic pollutant amount, organic pollutant, inorganic pollutant and the turbidity that reduce in dyeing waste water quite difficult simultaneously.Existing dyeing waste water advanced treatment and reuse technology, some Process Route are unreasonable, and some costs are too high, and problem is blocked up in the serious dirt that mostly there is reverse osmosis membrane treatment system.
Summary of the invention
The object of the invention is to, overcome the deficiencies in the prior art, a kind of economical rationality is provided, the stifled dyeing waste water advanced treatment of dyeing waste water reverse osmosis membrane treatment system dirt and reuse technology can be greatly reduced.
The object of the invention is to be achieved through the following technical solutions:
A kind of dyeing waste water advanced treatment of the present invention and reuse technology, this technique is: wastewater collection equalizing tank+biochemical aerobic system+second pond+three grades flocculation sediment+MBR membrane bioreactor+deep bed filter+reverse osmosis membrane system.
Further, by second pond+three grades of flocculation sediment+MBR membrane bioreactor+deep bed filter, suspended substance, turbidity are dropped to below 1ppm, meets the influent quality requirement of reverse osmosis membrane.
Beneficial effect of the present invention:
Dyeing waste water advanced treatment of the present invention and reuse technology, have following characteristics:
1. a biochemical aerobic system organics removal, is decomposed into small organic molecule by larger molecular organics, reduces organic content on the one hand, reduces macromole on the other hand and blocks up the dirt of follow-up reverse osmosis membrane;
2., by second pond, three grades of flocculation sediments, additional MBR technology and deep bed filter, remove inorganics, suspended substance, turbidity dropped to below 1ppm, meets the influent quality requirement of reverse osmosis membrane;
3. deep bed filter is as the cartridge filter of reverse osmosis membrane, can increase filtering traffic, be convenient for changing filter material, and simultaneously filter bag can Reusability, reduces running cost;
4. advantageous special feature: organism is decomposed into small molecules by biochemical aerobic treatment by macromole, facilitates reverse osmosis membrane to the separation and purification of sewage, stops organism to block up the dirt of membrane element simultaneously; Suspended substance, turbidity can reach the inflow requirement of reverse osmosis membrane membrane element completely by level Four continuous filtration (second pond+three grades of flocculation sediment+MBR+ deep bed filter).
Dyeing waste water advanced treatment of the present invention and reuse technology, Process Route economical rationality, situation is blocked up in the dirt that can greatly reduce dyeing waste water reverse osmosis membrane treatment system.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
A kind of dyeing waste water advanced treatment of the present invention and reuse technology, it comprises: wastewater collection equalizing tank+biochemical aerobic system+second pond+three grades flocculation sediment+MBR membrane bioreactor+deep bed filter+reverse osmosis membrane system.
By dyeing waste water advanced treatment of the present invention and reuse technology, be applied to advanced treatment and the Treatment for Reuse of the dyeing waste water that certain A printing and dyeing mill flows out, situation is as follows:
Undressed former dyeing waste water quality: COD value 2000ppm, suspended substance 180ppm, turbidity 165ppm;
Treating processes:
First carry out pre-treatment by wastewater collection equalizing tank;
Again by biochemical aerobic system process, COD value is made to drop to 100ppm, although organic content can not reach the inflow requirement of reverse osmosis membrane, but organism has resolved into small molecules by macromole, facilitate reverse osmosis membrane to the further separation and purification of sewage, decrease organism macromole simultaneously and the dirt of reverse osmosis membrane membrane element is blocked up;
Again by second pond+three grades of flocculation sediment+MBR membrane bioreactors+deep bed filter level Four continuous filtration process, make suspended substance, turbidity drops to below 1ppm, the influent quality requirement of reverse osmosis membrane can be reached;
Finally by reverse osmosis membrane processing, make COD drop to 5ppm, suspended substance drops to 0.5ppm, and turbidity drops to 0.1ppm, reaches reuse water requirement.
The influent quality of reverse osmosis membrane requires to be generally: turbidity < 1ppm, SDI value < 5ppm, COD < 15ppm (i.e. mg/L), pH value 3 ~ 10.By technique of the present invention, although COD value can not reach the influent quality requirement of reverse osmosis membrane, but technique of the present invention is by sacrificing organic treatment step (only having biochemical aerobic coagulation), strengthening and the treatment step (second pond+three grades of flocculation sediment+MBR membrane bioreactors+deep bed filter level Four continuous filtration process) improved inorganics, this employing is removing the method on inorganics by compared with great strength flower, adopt compared to existing technology will comparatively great strength flower on organics removal but still organism cannot be made to drop to meet the method for reverse osmosis membrane inflow requirement (COD value most multipotency drop to 50ppm), there are greater advantages: 1. rationally more economical, manpower and materials are not expended on flogging a dead horse, 2. inorganics amount number comparatively large on the stifled impact of the dirt of reverse osmosis membrane, organism amount number to block up relative effect to the dirt of reverse osmosis membrane smaller, therefore, dropped to by inorganics after meeting reverse osmosis membrane inflow requirement, the dirt that can greatly reduce reverse osmosis membrane is blocked up.
Embodiment 2
By dyeing waste water advanced treatment of the present invention and reuse technology, be applied to advanced treatment and the Treatment for Reuse of the dyeing waste water that certain B printing and dyeing mill flows out, situation is as follows:
Undressed former dyeing waste water quality: COD value 1000ppm, suspended substance 105ppm, turbidity 95ppm;
Treating processes:
First carry out pre-treatment by wastewater collection equalizing tank;
Again by biochemical aerobic system process, make COD value drop to 80ppm, although organic content can not reach the inflow requirement of reverse osmosis membrane, organism has resolved into small molecules by macromole;
Again by second pond+three grades of flocculation sediment+MBR membrane bioreactors+deep bed filter level Four continuous filtration process, make suspended substance, turbidity drops to below 1ppm, the influent quality requirement of reverse osmosis membrane can be reached;
Finally by reverse osmosis membrane processing, make COD drop to 5ppm, suspended substance drops to 0.5ppm, and turbidity drops to 0.1ppm, reaches reuse water requirement.
Comparative experimental example
By dyeing waste water advanced treatment of the present invention and reuse technology, be applied to advanced treatment and the reuse of the dyeing waste water of certain printing and dyeing mill, situation is blocked up in the dirt with regard to reverse osmosis membrane, carries out simultaneous test with original advanced treatment and reuse technology.
Comparative test result shows: adopt original technique, and the dirt cycle of blocking up of reverse osmosis membrane is 1-2 month; Adopt technique of the present invention, the dirt cycle of blocking up of reverse osmosis membrane is 2-4 month.
As can be seen here, technique of the present invention, the dirt that can greatly reduce dyeing waste water reverse osmosis membrane treatment system is blocked up.
Claims (2)
1. dyeing waste water advanced treatment and a reuse technology, is characterized in that, this technique is: wastewater collection equalizing tank+biochemical aerobic system+second pond+three grades flocculation sediment+MBR membrane bioreactor+deep bed filter+reverse osmosis membrane system.
2. dyeing waste water advanced treatment as claimed in claim 1 and reuse technology, it is characterized in that, by second pond+three grades of flocculation sediment+MBR membrane bioreactor+deep bed filter, suspended substance, turbidity are dropped to below 1ppm, meets the influent quality requirement of reverse osmosis membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510317139.3A CN104891743A (en) | 2015-06-10 | 2015-06-10 | Advanced treatment and recycling technology of printing and dyeing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510317139.3A CN104891743A (en) | 2015-06-10 | 2015-06-10 | Advanced treatment and recycling technology of printing and dyeing wastewater |
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| Publication Number | Publication Date |
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| CN104891743A true CN104891743A (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510317139.3A Pending CN104891743A (en) | 2015-06-10 | 2015-06-10 | Advanced treatment and recycling technology of printing and dyeing wastewater |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101723538A (en) * | 2008-10-24 | 2010-06-09 | 曾华 | Process for treating landfill leachate |
| WO2010123174A1 (en) * | 2009-04-20 | 2010-10-28 | Bookang Tech Co., Ltd. | Appliance for processing sewage having biological process, sludge separator and membrane separator |
| CN101880103A (en) * | 2009-05-08 | 2010-11-10 | 东丽纤维研究所（中国）有限公司 | Printing-dying wastewater recycling treatment process |
-
2015
- 2015-06-10 CN CN201510317139.3A patent/CN104891743A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101723538A (en) * | 2008-10-24 | 2010-06-09 | 曾华 | Process for treating landfill leachate |
| WO2010123174A1 (en) * | 2009-04-20 | 2010-10-28 | Bookang Tech Co., Ltd. | Appliance for processing sewage having biological process, sludge separator and membrane separator |
| CN101880103A (en) * | 2009-05-08 | 2010-11-10 | 东丽纤维研究所（中国）有限公司 | Printing-dying wastewater recycling treatment process |
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Application publication date: 20150909 |