CN106186565A - A kind of dyeing waste water zero-emission recycling system and method - Google Patents
A kind of dyeing waste water zero-emission recycling system and method Download PDFInfo
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- CN106186565A CN106186565A CN201610755583.8A CN201610755583A CN106186565A CN 106186565 A CN106186565 A CN 106186565A CN 201610755583 A CN201610755583 A CN 201610755583A CN 106186565 A CN106186565 A CN 106186565A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The open a kind of dyeing waste water zero-emission recycling system of the present invention, including: pretreatment system, for water quality and the water yield of dyeing waste water are adjusted, to meet the influent quality requirement of biochemical treatment system；Biochemical treatment system, for carrying out biochemical treatment to reduce the COD content in dyeing waste water to the dyeing waste water from pretreatment system；And nanofiltration processing system, for retaining from the Organic substance in the dyeing waste water of biochemical treatment system and through villaumite and sulfate, the product Water circulation of nanofiltration processing system, the NF concentrated water reuse of nanofiltration processing system produces workshop section to printing dye.Dyeing waste water zero-emission recycling system provided by the present invention has coupled biochemical treatment and film processes, and improves stability and treatment effeciency that system is run, sufficiently lower COD content in dyeing waste water；Saline and dense water are back to reproduction respectively, it is achieved the zero-emission of waste water, are substantially reduced printing and dyeing operating cost and save the expense that discharged wastewater met the national standard processes.
Description
Technical field
The invention belongs to treatment of dyeing wastewater field, especially relate to a kind of dyeing waste water zero-emission recycling system and side
Method.
Background technology
Printing and dyeing industry needs to consume substantial amounts of water resource in production process, produces a large amount of waste water, waste water salinity up to
More than 4000mg/L, COD generally reach more than 1000mg/L, and the biodegradability index B/C value of part dyeing waste water is less than 0.2.
Single materialization or biochemical process is used to be difficult to ensure that standard water discharge and meet reuse requirement.
At present, the conventional process of conventional dyeing waste water is materialization-biochemistry-materialization, and the materializing strategy after biochemistry is mainly film
Treatment technology.Utilizing reverse-osmosis treated, its fresh water can be with direct reuse in production, and dense water COD is in more than 120mg/L, salinity
Up to 10000mg/L, if directly by concentrate recirculation to regulating reservoir, system salinity can be made constantly to rise, destroys biochemical treatment
Journey.
Due to the dyeing of printing and dyeing, need to add a large amount of salt (sodium chloride is main, and contains sodium sulfate), to improve dyeing
Efficiency, this is the reason that dyeing waste water salinity is higher.Reverse osmosis concentrated water directly discharges, and containing more organic pollution, causes ring
Environment pollution；The exhaust emission environment of higher salinity also wastes resource simultaneously.
Summary of the invention
It is an object of the invention to, for present on present situation, it is provided that a kind of dyeing waste water zero-emission recycling system.
To this end, the present invention uses following solution:
A kind of dyeing waste water zero-emission recycling system, it is characterised in that described dyeing waste water Zero discharging system includes:
-pretreatment system, described pretreatment system is for being adjusted water quality and the water yield of dyeing waste water, with satisfied life
Change the influent quality requirement of processing system；
-biochemical treatment system, described biochemical treatment system is for carrying out biochemistry to the dyeing waste water from pretreatment system
Process to reduce the COD content in dyeing waste water；And
-nanofiltration processing system, described nanofiltration processing system is for retaining in the dyeing waste water of biochemical treatment system
Organic substance and through villaumite and sulfate, the NF concentrated water reuse of nanofiltration processing system to printing dye produces workshop section, and nanofiltration processes system
The product Water circulation of system produces workshop section to printing and dyeing salt adding.
Preferably, the NF membrane of nanofiltration processing system is the low nanofiltration separation membrane of molecular cut off of chlorine root, sulfate radical, main
Being of syllabus, it is possible to through most chlorine root and sulfate radical, but major part Organic substance can be retained, thus reduce printing and dyeing
COD content in waste water.
Preferably, described dyeing waste water Zero discharging system also includes that ozonation aerated system, described ozonation aerated system are used for
Dense water from nanofiltration processing system is decoloured and decomposes hardly degraded organic substance, the water part of described ozonation aerated system
Reuse to printing dye produces workshop section, and remaining part reuse is to pretreatment system.
Preferably, when salinity and dyeing waste water zero-emission resource in the water outlet of nanofiltration processing system or ozonation aerated system
In the water inlet of change system salt content be close or slightly above time, stop the water inlet of dyeing waste water zero-emission recycling system and discharge
The product water of nanofiltration processing system or the water outlet of ozonation aerated system.
Preferably, described pretreatment system includes regulating reservoir and flocculation sedimentation tank, and described regulating reservoir and flocculation sedimentation tank are suitable
Secondary setting, described regulating reservoir is for regulating the water quality of dyeing waste water and the water yield of intermittent discharge, and described flocculation sedimentation tank is used for
Except particulate matter and part Recalcitrant chemicals in dyeing waste water.
Preferably, flocculation sedimentation tank can adjust as required and adds flocculant or do not add medicament.
Preferably, described biochemical treatment system includes anaerobic reactor, aerobic reactor, membrane bioreactor and activated carbon
Defecator, the dyeing waste water after preprocessed system processes sequentially enters anaerobic reactor, aerobic reactor, membrane biological reaction
Device and active carbon filtering device, the trapped fluid of active carbon filtering device is recycled to the entrance of aerobic reactor and is circulated process.
Adding activated carbon in aerobic reactor, activated carbon is as the carrier of strain, it is possible to along with waste water is at aerobic reactor, membrane bioreaction
Answering and carry out flow circuit in device and active carbon filtering device, raising strain is to organic degradation effect, thus carries at waste water
The flow process of the activated carbon of load strain fully reduces the COD content in dyeing waste water.
Preferably, described anaerobic pond uses mechanical agitation anaerobic pond, up-flow anaerobic grain to pollute mud bed, Anaerobe filter
One in pond, hydrolysis acidification pool.
Preferably, described membrane bioreactor uses hollow fiber film assembly or plate type membrane assembly.
Preferably, in the water outlet of described membrane bioreactor, COD content is less than 100mg/L, is more preferably, less than 60mg/
L。
Preferably, described active carbon filter uses ozone biological activated carbon reactor.
Preferably, in the water outlet of described active carbon filter, COD content is less than 120mg/L.
It is another object of the present invention to provide a kind of dyeing waste water zero-emission method of resource, described printing and dyeing are given up
First water zero discharge method of resource is pretreatment, and pretreatment includes that the water yield of the water quality to dyeing waste water and intermittent discharge is carried out
Regulation, and remove particulate matter and part Recalcitrant chemicals in dyeing waste water；Then dyeing waste water after pretreatment is carried out
Biochemical treatment, biochemical treatment is for fully reducing the COD content in dyeing waste water；Dyeing waste water after biochemical treatment is carried out
Nanofiltration processes, and nanofiltration processes and retains the Organic substance in dyeing waste water and through most villaumite and sulfate, for further
Reducing the COD content in dyeing waste water, the dense water after nanofiltration process can be back to dark printing dye and produce workshop section, it is also possible to
Through ozonation aerated carry out decolouring be back to again light color printing dye produce workshop section.NF membrane during nanofiltration processes is chlorine root, sulfur
The nanofiltration separation membrane that the molecular cut off of acid group is low, main purpose is, it is possible to through most chlorine root and sulfate radical, but
Major part Organic substance can be retained, thus reduce the COD content in dyeing waste water.
Preferably, described biochemical treatment includes anaerobic reaction, aerobic reaction and membrane biological reaction, and dyeing waste water sequentially passes through
Anaerobic reaction, aerobic reaction and membrane bioreaction are applied to reduce the COD content in dyeing waste water, after membrane biological reaction processes
Dyeing waste water carries out activated carbon filtration, and the dyeing waste water that activated carbon retains in filtering is recycled to the entrance of aerobic reaction and locates
Reason.Activated carbon is as the carrier of strain, it is possible to along with muddy water filters three unit at aerobic reaction, membrane biological reaction and activated carbon
In carry out flow circuit, improve strain to organic degradation effect, thus carry the stream of the activated carbon of load strain at muddy water
The COD content in dyeing waste water is fully reduced during Dong.
Compared with prior art, dyeing waste water zero-emission recycling system provided by the present invention has the advantage that
(1) dyeing waste water zero-emission recycling system provided by the present invention has coupled biochemical treatment and membrane technology,
Improve stability and treatment effeciency that system is run, sufficiently lower COD content in dyeing waste water；
(2) dyeing waste water zero-emission recycling system provided by the present invention uses nanofiltration processing system to process biochemistry and go out
Water, compared with reverse osmosis technology, operation pressure is low, and fouling membrane degree is little, it is achieved the reuse of the salinity in dyeing waste water, improves
The reclamation rate of water and resource reclaim；Use nanofiltration system simultaneously, reduce the salinity of dense water, thus reduce concentrate recirculation to biochemistry
The impact of system；
(3) the dyeing waste water zero-emission recycling system provided by the present invention setting by ozonation aerated system, it is achieved
The separate-recycling of coloured differently technique, carries out the decolouring of the dense water of nanofiltration system by ozonation aerated system and hardly degraded organic substance divides
Solve, improve dense water biodegradability and reuse utilization rate；
(4) dyeing waste water zero-emission recycling system provided by the present invention can realize saline and dense water in waste water and returns respectively
For reproduction, it is achieved the zero-emission of waste water, it is substantially reduced printing and dyeing operating cost and saves the expense that discharged wastewater met the national standard processes
With, there is preferable social value and the value of environmental protection.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the dyeing waste water zero-emission recycling system that the present invention provides；
In figure: 101-regulating reservoir；102-flocculation sedimentation tank；201-anaerobic reactor；202-aerobic reactor；203-film is raw
Thing reactor；204-active carbon filter；301-nanofiltration processing system；The ozonation aerated system of 401-.
Detailed description of the invention
Below in conjunction with accompanying drawing, the one exemplary embodiment of the present invention is described in further detail.
A kind of dyeing waste water efficient zero-discharging process system, described Zero discharging system is used for processing dyeing waste water, including pre-
Processing system, biochemical treatment system, nanofiltration processing system 301 and ozonation aerated system 401.
Pretreatment system includes regulating reservoir 101, flocculation sedimentation tank 102；Regulating reservoir 101 is for dyeing waste water intermittent discharge water
Matter runoff investigation；Flocculation sedimentation tank 102 is used for removing particulate matter and part Recalcitrant chemicals in dyeing waste water.Regulating reservoir stops
Time is 6-24h；Flocculation sedimentation tank 102 can adjust as required and add flocculant, and adding flocculant can be FeCl3, Fe2SO4,
The common flocculant such as PAC, PSF；
Biochemical treatment system includes anaerobic reactor 201, aerobic reactor 202, membrane bioreactor 203 and activated carbon mistake
Filter device 204；Anaerobic reactor 201 is connected with flocculation sedimentation tank 102 and carries out anaerobic biochemical treatment, anaerobic reactor 201 water outlet
Entering aerobic reactor 202 and carry out aerobic treatment, aerobic reactor 202 mixed liquor enters membrane bioreactor 203 to be carried out
Biochemical treatment and mud-water separation further；Anaerobic reation pool 201 can use mechanical agitation anaerobic pond, up-flow anaerobic grain dirty
Mud bed, anaerobic biofilter, hydrolysis acidification pool etc.；Membrane bioreactor 203 uses hollow fiber film assembly, flat film group
Part；Membrane bioreactor 203 water outlet COD is less than 60-100mg/L；Anaerobic reactor 201 water outlet COD is less than 150-200mg/L,
Without aerobic reactor 202 and membrane bioreactor 203, it is directly entered active carbon filter 204 and processes；Activated carbon mistake
Filter 204 uses ozone biological activated carbon reactor；
Nanofiltration processing system 301 is produced Water circulation and is produced workshop section to dyeing salt adding, and dense water enters ozonation aerated system 401 and is used for
The dense water decolorization of nanofiltration processing system 301 and hardly degraded organic substance decompose；For printing and dyeing deep colour dyeing process section, nanofiltration processing system
The dense water of 301 can direct reuse in deep colour dyeing unit, and do not enter ozonation aerated system 401；The water outlet of ozonation aerated system 401
Part reuse is to dye unit, and part effluent reuse is to regulating reservoir 101；When ozonation aerated system 401 water outlet salinity and zero-emission
Place system water inlet salinity close or slightly above time discharge.
Specifically, following technique can be used:
Certain printing and dyeing enterprise, waste water intermittent discharge, salinity 3000-5000mg/L, chlorine ion concentration is 1500-3000mg/
L, sulfate concentration is 200-600mg/L, COD 800-1500mg/L.
Waste water, according to different dyeing and printing process sections and Production requirement, intermittent discharge, enters regulating reservoir 101, and regulating reservoir stops
Time 5-24h, regulating reservoir water outlet enters flocculation sedimentation tank 102 by elevator pump, adds flocculant PAC, and sedimentation tank water outlet enters
Anaerobic reation pool 201, anaerobic pond uses mechanical agitation anaerobic pond, installs two pushing flow mixers and mix, anaerobism agitator
Water outlet enters aerobic reactor 202 and carries out aerobic biochemical reaction, and aerobic reactor mixed liquor enters membrane bioreactor 203, film
Bioreactor uses hollow fiber curtain type membrane component, and water outlet COD is less than 80mg/L, and water outlet contains certain colourity, enters nanofiltration
Processing system 301, nanofiltration processing system uses Tao Shi rolling nanofiltration membrane component, and product water salinity is based on sodium chloride, and COD is less than
30mg/L, dense water section is back to deep colour dyeing process section, and major part enters ozonation aerated system 401 and decolours, after decolouring
Part effluent reuse, remaining is back to regulating reservoir, when dense water salinity is discharged more than 5000mg/L.
Use printing and dyeing wastewater treatment system provided by the present invention to utilize conventional biochemical to process and membrane bioreactor combine,
Reducing Organic Pollutants in Wastewater content, use nanofiltration processing system to process bio-chemical effluent, operation pressure is low, it is achieved printing and dyeing are useless
Salinity reuse in water；Reduce the salinity of dense water simultaneously, reduce the concentrate recirculation impact on biochemical system；By ozonation aerated
The setting of system, it is achieved the separate-recycling of coloured differently technique, carries out the dense water of nanofiltration processing system by ozonation aerated system
Decolouring and hardly degraded organic substance decompose, and improve dense water biodegradability and circulation, thus realize efficient reuse and the zero-emission of waste water.
Above-mentioned detailed description of the invention, is not intended that limiting the scope of the invention.Those skilled in the art should be bright
White, depend on that design requires and other factors, various amendment, combination, sub-portfolio and replacement can occur.Any
The amendment made within the spirit and principles in the present invention, equivalent alterations and modifications etc., should be included in scope
Within.
Claims (8)
1. a dyeing waste water zero-emission recycling system, it is characterised in that described dyeing waste water Zero discharging system includes:
-pretreatment system, described pretreatment system is for being adjusted water quality and the water yield of dyeing waste water, at satisfied biochemistry
The influent quality requirement of reason system；
-biochemical treatment system, described biochemical treatment system is for carrying out biochemical treatment to the dyeing waste water from pretreatment system
To reduce the COD content in dyeing waste water；And
-nanofiltration processing system, described nanofiltration processing system is organic for retain from the dyeing waste water of biochemical treatment system
Thing and through villaumite and sulfate, the NF concentrated water reuse of nanofiltration processing system produces workshop section to printing dye.
2. according to the dyeing waste water zero-emission recycling system described in claim 1, it is characterised in that described dyeing waste water zero
Exhaust system also includes ozonation aerated system, and described ozonation aerated system is for taking off the dense water from nanofiltration processing system
Normal complexion decomposes hardly degraded organic substance, and water part reuse to the printing dye of described ozonation aerated system produces workshop section, remaining
Part reuse is to pretreatment system.
3. according to the dyeing waste water zero-emission recycling system described in claim 1, it is characterised in that described pretreatment system
Including regulating reservoir and flocculation sedimentation tank, described regulating reservoir and flocculation sedimentation tank are sequentially arranged, and described regulating reservoir is used for regulating printing and dyeing
The water quality of waste water and the water yield of intermittent discharge, described flocculation sedimentation tank is used for removing particulate matter and part difficult degradation in dyeing waste water
Pollutant.
4. according to the dyeing waste water zero-emission recycling system described in claim 1, it is characterised in that described biochemical treatment system
System includes anaerobic reactor, aerobic reactor, membrane bioreactor and active carbon filtering device, after preprocessed system processes
Dyeing waste water sequentially enters anaerobic reactor, aerobic reactor, membrane bioreactor and active carbon filtering device, and activated carbon filters
The trapped fluid of device is recycled to the entrance of aerobic reactor and is circulated process.
5. according to the dyeing waste water zero-emission recycling system described in claim 4, it is characterised in that described activated carbon filters
Device uses ozone biological activated carbon reactor.
6. according to the dyeing waste water zero-emission recycling system described in claim 4, it is characterised in that described activated carbon filters
In the water outlet of device, COD content is less than 120mg/L.
7. a dyeing waste water zero-emission method of resource, it is characterised in that described dyeing waste water zero-emission method of resource is first
First for pretreatment, pretreatment includes that the water yield of the water quality to dyeing waste water and intermittent discharge is adjusted, and removes dyeing waste water
Middle particulate matter and part Recalcitrant chemicals；Then dyeing waste water after pretreatment carries out biochemical treatment, and biochemical treatment is used
In fully reducing the COD content in dyeing waste water；Dyeing waste water after biochemical treatment carries out nanofiltration process, and nanofiltration processes and cuts
Stay the Organic substance in dyeing waste water and through villaumite and sulfate, for reducing the COD content in dyeing waste water, nanofiltration further
Dense water after process can be back to dark printing dye and produce workshop section, it is also possible to through ozonation aerated carry out decolouring be back to again
Light color printing dye produces workshop section.
8. according to the dyeing waste water zero-emission method of resource described in claim 7, it is characterised in that described biochemical treatment bag
Including anaerobic reaction, aerobic reaction and membrane biological reaction, dyeing waste water sequentially passes through anaerobic reaction, aerobic reaction and membrane biological reaction
For reducing the COD content in dyeing waste water, the dyeing waste water after membrane biological reaction processes carries out activated carbon filtration, activated carbon
The dyeing waste water retained in filtration is recycled to the entrance of aerobic reaction and reprocesses.
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| CN109112743A (en) * | 2018-08-01 | 2019-01-01 | 嘉兴市金乐染织有限公司 | A kind of method that waste water is knitted in the leading portion reclaiming system of water and processing printing and dyeing in dyeing and weaving |
| CN110194559A (en) * | 2018-09-12 | 2019-09-03 | 中国科学院过程工程研究所 | A kind of process of colour-spun yarns dyeing waste-water zero-emission and resource reusing |
| CN110980885A (en) * | 2019-12-23 | 2020-04-10 | 天津膜天膜科技股份有限公司 | Method for efficiently treating and recycling sewage in printing and dyeing industry |
| CN112794563A (en) * | 2020-12-26 | 2021-05-14 | 苏州聚智同创环保科技有限公司 | High-salinity organic wastewater recycling treatment process by suspension polymerization process |
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| CN109112743A (en) * | 2018-08-01 | 2019-01-01 | 嘉兴市金乐染织有限公司 | A kind of method that waste water is knitted in the leading portion reclaiming system of water and processing printing and dyeing in dyeing and weaving |
| CN110194559A (en) * | 2018-09-12 | 2019-09-03 | 中国科学院过程工程研究所 | A kind of process of colour-spun yarns dyeing waste-water zero-emission and resource reusing |
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| CN112794563A (en) * | 2020-12-26 | 2021-05-14 | 苏州聚智同创环保科技有限公司 | High-salinity organic wastewater recycling treatment process by suspension polymerization process |
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Application publication date: 20161207 |