CN101830597B - Treatment method of printing and dying wastewater - Google Patents
Treatment method of printing and dying wastewater Download PDFInfo
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- CN101830597B CN101830597B CN2009101150170A CN200910115017A CN101830597B CN 101830597 B CN101830597 B CN 101830597B CN 2009101150170 A CN2009101150170 A CN 2009101150170A CN 200910115017 A CN200910115017 A CN 200910115017A CN 101830597 B CN101830597 B CN 101830597B
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Abstract
The invention relates to the field of industrial water treatment, in particular to a treatment method of printing and dying wastewater. The treatment method solves the problems of complex operation, high energy consumption, high sludge disposal cost, low treatment efficiency, big occupation area and the like existing in the prior art of printing and dying wastewater treatment. The invention provides the treatment method of the printing and dying wastewater, with lower operation cost, low energy consumption, stable treatment effect and small occupation area. The printing and dying wastewater is pumped into the hydrolytic acidification section of a membrane biological reaction basin after the pH value of the wastewater is regulated; a pulse water distribution mode is adopted, and thus, auxiliary equipment of a water-power impeller is not needed; mud and water separation is carried out by replacing the traditional biochemical reaction basin and sedimentation basin process with a membranebioreactor process, and thus, drug is added for settling is not needed; activated sludge is trapped to increase microbial biomass in the biochemical basin, thereby increasing the biochemical reactionrate; the produced water of the membrane biological reaction basin is treated by adopting a nanofiltration membrane separation system, and therefore, the produced water can be discharged after reaching standards.
Description
Technical field
The present invention relates to the Treatment of Industrial Water field, specifically relate to a kind of treatment method of printing and dying wastewater.
Background technology
Contain complicated ingredients such as a large amount of dyestuffs, slurry, tensio-active agent, alkaline matter in the dyeing waste water, have that colourity is big, organic concentration is high, alkalescence is strong, water quality and quantity changes and wait characteristics greatly, and discharge of wastewater has intermittence, biodegradability is poor.Single sorbent material is difficult to effective dye wastewater treatment using in existing treatment process such as the absorption method, and the body refuse volume production is living big, and the aftertreatment difficulty easily causes secondary pollution, and running cost is higher; Flocculence is poor to the decolorizing effect of hydrophilic dye, and the COD clearance is low, and the body refuse amount is big, and the dehydration difficulty; Electrolytic process exists that the electrode materials consumption is big, the easy passivation of battery lead plate, energy consumption are higher, and running cost is relatively than problems such as height; Chemical oxidization method processing cost height is not suitable for the processing of big flow waste water.
How solving processing cost height, complicated operation, poor processing effect is the problem that treatment of dyeing wastewater will solve.
Summary of the invention
Problem to be solved by this invention is low, the simple treatment method of printing and dying wastewater of technology of a kind of less investment, running cost that proposes at the deficiency of above-mentioned existing processing method existence.
Technical problem of the present invention is solved by following technical scheme:
This treatment method of printing and dying wastewater may further comprise the steps:
1. adopt grid that dyeing waste water is filtered, remove filter residue, filtrate enters wastewater equalization pond;
2. the equalizing tank residence time is 1～2 day, and boring aeration pipe is set in the pond, and regularly aeration stirs and makes dyeing waste water water quality, even water temperature;
3. adjust at pH and regulate pH value to 6.5～8.0 in the pond;
4. equalizing tank waste water is pumped into membrane biological reaction pond acidication section, adopt the pulse water distribution mode, the control hydraulic detention time is at 4～6h.
5. membrane biological reaction pond acidication section supernatant liquor flows in the aerobic section of membrane biological reaction pond by water leg, it is the hollow-fibre membrane of 0.1～0.4 μ m that mud-water separation adopts the aperture, membrane module places biological reaction tank, and aerator is under membrane module, and mixed solution upwards flows with air-flow.
6. the product water in membrane biological reaction pond is pumped into the nanofiltration membrane separation system and carry out advanced treatment, dense water then is back to equalizing tank, and the water of nanofiltration membrane treatment is qualified discharge directly.
The beneficial effect that the present invention is compared with the prior art is:
1. in membrane biological reaction pond acidication section, adopt the pulse water distribution mode can form the suspended sludge layer, do not need utility appliance such as waterpower impeller, power consumption can save 20%～30%, the processing efficiency height.
2. the cross-flow on film surface is produced by air agitation, and aerator is under membrane module, and mixed solution upwards flows with air-flow, produces shear-stress on the film surface, and under the effect of this shear-stress, colloidal solid is forced to leave the film surface, allows water see through.The membrane biological reaction pond is under the efficient crown_interception of hollow-fibre membrane, sludge concentration is 5000mg/L～8000mg/L, (sludge concentration is 2500～4000mg/L), has improved the processing portative power and the biochemical treatment effect of system to be higher than the traditional activated sludge process printing-dyeing waste water treatment process.
3. adopt the nanofiltration membrane separation system that water is produced in the membrane biological reaction pond and carry out filtration treatment, required filter pressure is less than reverse osmosis system, working pressure only is the topping-up pump of 0.5MPa～1.0MPa, be lower than reverse osmosis working pressure (1.2MPa～1.8MPa), but energy efficient 20%～40%, and organic removal rate is greater than 90% in the waste water, and chroma removal rate is greater than 95%, and gained produces directly qualified discharge of water.
4. adopt hollow-fibre membrane and nanofiltration membrane combination process, the sludge concentration height, the facility floor space is little, sludge yield is few, and sludge discharging period is 30～60d, does not need spoil disposal every day, reduce working costs such as active sludge press filtration, mummification, landfill, and be easy to realize automatic control.
Description of drawings
Accompanying drawing is the process flow sheet of the specific embodiment of the invention.
Embodiment
The chemical oxygen demand (COD) of dyeing waste water is 2000～3000mg/L, and 1000～1200 times of colourities, pH value are 8～10.
(1) by macrobead suspended substance, rubbish in the grid removal dyeing waste water.Thick, thin twice that grid adopts, the coarse rack gap is 15mm, and the fine fack gap is 3mm, and setting angle is 60 °, artificial scarfing cinder.
(2) by the equalizing tank homogenizing dyeing waste water water quality and the water yield, the residence time is 1 day.Boring aeration pipe is set in the equalizing tank, the timing aeration, dyeing waste water water quality stirs.
(3) adjust the pond by pH and regulate pH value to 7.5, enter the membrane biological reaction pond.
(4) make complicated macromole, insoluble organism and refractory organic under the effect of perienzyme, be hydrolyzed to earlier small molecules, dissolved organic matter and biodegradable organic substance by membrane biological reaction pond acidication section; The control hydraulic detention time adopts the pulsed water distribution manner at 6h, forms the mud bed by hydraulics in reaction tank.Recurrence interval is 5min, and water-filling/discharge time ratio is 12, and pulse water distribution aperture Peak Flow Rate is 3m/s.
(5) membrane bioreactor aerobic section waste water hollow fiber film assembly by aperture 0.4 μ m after biochemical treatment filters, and obtains producing water, and the sludge concentration in the pond improves simultaneously, can accelerate the speed of biochemical reaction.Sludge concentration in the membrane bioreactor is 5000～8000mg/L, and sludge loading is 0.05～0.15kgCOD/kgMLVSS d.Membrane biological reaction pond sludge discharging period reaches 45 days, and the mud amount seldom.
(6) produce water by middle pond collection membrane bio-reactor, as the water inlet of follow-up nanofiltration system.
(7) utilize nanofiltration system, organic removal rate is reached 90%, chroma removal rate is greater than 95%, and gained produces directly qualified discharge of water, and dense water then is back to equalizing tank.The water reclamation rate of nanofiltration system is 80%; Adopt nanofiltration system, required filter pressure 0.69Mpa.
Dyeing waste water after treatment, the average removal rate of chemical oxygen demand (COD), biochemical oxygen demand (BOD), colourity can reach more than 90%, can stablize pollutant emission standard (GB4287-92) primary standard that reaches textile dyeing and finishing industry.As shown in the table.
Each controls project discharge value and discharge index comparison sheet
| Project | Discharge value | Standard value | Monitoring method | The method source |
| Chemical oxygen demand (COD), mg/L | ≤70 | 100 | Potassium bichromate backflow volumetry | GB11914-89 |
| Biochemical oxygen demand (BOD), mg/L | ≤10 | 25 | Dilution and inoculation | GB7488-87 |
| Colourity, doubly | ≤32 | 40 | The extension rate method | GB11903-89 |
Claims (7)
1. treatment method of printing and dying wastewater is characterized in that including following steps:
1) dyeing waste water enters wastewater equalization pond through grid filtration;
2) the equalizing tank residence time is 1 day, and boring aeration pipe is set in the pond, regularly aeration, evenly dyeing waste water water quality and water temperature;
3) in equalizing tank, regulate pH value to 6.5～8.0;
4) waste water after the adjusting pH value enters membrane biological reaction pond acidication section, adopts the pulse water distribution mode, and the control hydraulic detention time forms the mud bed at 4～6h in reaction tank;
5) supernatant liquor of membrane biological reaction pond acidication section flows into membrane biological reaction pond aerobic section by water leg, and adopting the aperture is that 0.1～0.4 μ m hollow-fibre membrane carries out mud-water separation;
6) the product water in membrane biological reaction pond is pumped into the nanofiltration membrane separation system and carry out advanced treatment, dense water then is back to equalizing tank, the direct qualified discharge of the water of nanofiltration membrane treatment.
2. by the described treatment method of printing and dying wastewater of claim 1, it is characterized in that membrane biological reaction pond acidication section adopts the pulse water distribution mode, save waterpower impeller utility appliance, in the pond, form the suspended sludge layer.
3. by the described treatment method of printing and dying wastewater of claim 1, it is characterized in that printing-dyeing waste water treatment process is made up of membrane biological reaction pond and nanofiltration system, greater than 90%, chroma removal rate is greater than 95% to the organic pollutant clearance, and gained produces the direct qualified discharge of water.
4. by claim 1 or 3 described treatment method of printing and dying wastewater, it is characterized in that membrane biological reaction pond aerating apparatus be installed in membrane module under, mixed solution upwards flows with air-flow, produces cross-flow on the film surface, colloidal solid is forced to leave the film surface, allows water see through.
5. by the described treatment method of printing and dying wastewater of claim 4, it is characterized in that tubular fibre mould material that membrane module adopts is a kind of in polypropylene, polyvinyl chloride or the polysulfones.
6. by the treatment method of printing and dying wastewater of claim 1 or 3, it is characterized in that the nanofiltration system filter pressure is controlled at 0.5Mpa～1.0Mpa, save energy consumption 20%～40%.
7. by the treatment method of printing and dying wastewater of claim 6, it is characterized in that nanofiltration system adopts polyamide-based nanofiltration membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101150170A CN101830597B (en) | 2009-03-09 | 2009-03-09 | Treatment method of printing and dying wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101150170A CN101830597B (en) | 2009-03-09 | 2009-03-09 | Treatment method of printing and dying wastewater |
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| Publication Number | Publication Date |
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| CN101830597A CN101830597A (en) | 2010-09-15 |
| CN101830597B true CN101830597B (en) | 2011-12-07 |
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| CN2009101150170A Active CN101830597B (en) | 2009-03-09 | 2009-03-09 | Treatment method of printing and dying wastewater |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381810A (en) * | 2011-09-21 | 2012-03-21 | 叶永祥 | Recycling process for printing and dyeing waste water |
| CN103880238B (en) * | 2013-10-15 | 2015-09-16 | 光大环保（中国）有限公司 | A kind of flue gas condensing water treatment device and treatment process |
| CN103739159B (en) * | 2013-12-24 | 2016-03-23 | 广州中国科学院沈阳自动化研究所分所 | The acclimation method of the anaerobic hydrolysis-acidification mud of the former water of a kind for the treatment of of dyeing and printing and application |
| CN104743737B (en) * | 2014-11-28 | 2017-01-04 | 广州新滔水质净化有限公司 | Treatment method of industrial printing and dyeing wastewater |
| CN106186565A (en) * | 2016-08-24 | 2016-12-07 | 丁武龙 | A kind of dyeing waste water zero-emission recycling system and method |
| CN110526489A (en) * | 2018-05-27 | 2019-12-03 | 唐华香 | A kind for the treatment of process of dyeing waste water |
| CN109650659A (en) * | 2019-01-10 | 2019-04-19 | 湖南工程学院 | A kind for the treatment of method of printing and dying wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107806A (en) * | 1986-11-20 | 1988-07-20 | 山东海洋学院 | Printing and dyeing wastewater treatment method |
| CN1544351A (en) * | 2003-11-20 | 2004-11-10 | 广东省微生物研究所 | Biological Treatment of Printing and Dyeing Wastewater |
| CN1789168A (en) * | 2005-12-01 | 2006-06-21 | 杭州金源环保工程有限公司 | Method for recycling dyeing-wastewater |
-
2009
- 2009-03-09 CN CN2009101150170A patent/CN101830597B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107806A (en) * | 1986-11-20 | 1988-07-20 | 山东海洋学院 | Printing and dyeing wastewater treatment method |
| CN1544351A (en) * | 2003-11-20 | 2004-11-10 | 广东省微生物研究所 | Biological Treatment of Printing and Dyeing Wastewater |
| CN1789168A (en) * | 2005-12-01 | 2006-06-21 | 杭州金源环保工程有限公司 | Method for recycling dyeing-wastewater |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-163526A 2008.07.17 |
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