CN104829049A - Reusing treatment method for printing and dyeing wastewater - Google Patents
Reusing treatment method for printing and dyeing wastewater Download PDFInfo
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- CN104829049A CN104829049A CN201510189929.8A CN201510189929A CN104829049A CN 104829049 A CN104829049 A CN 104829049A CN 201510189929 A CN201510189929 A CN 201510189929A CN 104829049 A CN104829049 A CN 104829049A
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Abstract
The present invention discloses a reusing treatment method for printing and dyeing wastewater. The innovation point is that the method comprises the following step: sequentially feeding the printing and dyeing wastewater into an adjusting pool, a coagulative precipitation tank, a compound aerating activated sludge reaction tank, a hydrolysis acidification pool, a contact oxidation pool, a secondary sedimentation tank, a membrane biological reaction tank and a reverse osmosis reaction tank for recovery processing. The reusing treatment method for printing and dyeing wastewater disclosed by the present invention guarantees stable operation of an advanced treatment system, particularly a reverse osmosis system. Pretreatment by a set coagulating sedimentation process is necessary. The wastewater is purified in the coagulative precipitation tank, and the pollution concentration of effluent is greatly reduced, so that the operation load of subsequent biochemical treatment facilities can be alleviated. An MBR process is added based on conventional secondary bio-treatment, and the quality of the discharging effluent is greatly improved through an efficient interception effect of a membrane on suspended solids and organic matters in the wastewater, so that the recovery of the wastewater by virtue of the reverse osmosis treatment is relatively reliable.
Description
Technical field
The present invention relates to a kind of printing and dyeing wastewater recovery and disposal method, belong to environmental technology field.
Background technology
Dyeing is the important component part of China's industry, it is also draining rich and influential family with water rich and influential family, along with the enforcement of new standard " textile dyeing and finishing industrial water pollution thing emission standard " (GB4287-2012), wastewater treatment water price rising, simultaneously the scarcity of water resources causes tap water price also to rise steadily, and waste water advanced treatment recovery is fused to sewage treatment process as the technique means of energy-saving and emission-reduction with regard to impelling enterprise by this.
Dyeing waste water is one of main trade effluent of China, has the features such as the water yield is large, colourity is high, complicated component, causes serious pollution to environment.By its source point, dyeing waste water mainly comprises the dyeing of woollen mill, produce in fulling milling and scouring of wool process with lanolin, matching stain, auxiliary agent is the waste water of principal pollutant, cotton printing and dyeing mill is in destarch, kiering, bleaching, mercerising, dyeing and stamp process in produce with slurry, dyestuff, auxiliary agent, fiber wax and pectin are the waste water of pollutent, ramie textile printing and dyeing mill comes unstuck, the waste water being principal pollutant with ramie colloid and dyestuff and auxiliary agent produced in dyeing and arrangement process, tiffany textile mills are at filature, concise, dyeing and arrangement process in produce with silk gum and dyestuff, auxiliary agent is the waste water of pollutent, contract at alkali in knitting mill, kiering, the fiber wax produced when dyeing and aftertreatment and dyestuff, auxiliary agent is the waste water of pollutent.Dyeing waste water complicated component, colourity is at 100 ~ 500 times, chemical oxygen demand (COD) (COD) according to the difference of waste water quality from 400mg/L to 2500mg/L not etc., five-day BOD (BOD5) is relatively little, biodegradability (BOD5/COD) is poor, suspended substance reaches 100 ~ 400mg/L, is one of more unmanageable trade effluent.
At present, the unit operation of domestic and international treatment of dyeing wastewater can be divided into by principle: physical treatment process (comprising dilution method, natural sedimentation, filtration method, absorption method and centrifugal separation etc.), method of chemical treatment (comprising neutralisation, coacervation, oxidation style etc.) and biological treatment (activated sludge process, spray filter tank method, biological oxidation process etc.) 3 large classes.The treatment of dyeing wastewater of the current comparative maturity of China, the technique of qualified discharge are the technique that biochemistry and materialization combine, and idiographic flow is: dyeing waste water → equalizing tank → neutralization tank → anaerobic hydrolysis-acidification → active sludge treatment → coagulating sedimentation → qualified discharge.The first grade discharging requirement that emission standard is generally " textile dyeing and finishing industrial water pollution emission standard " (GB4287-92).
Though existing ultra-filtration membrane and reverse osmosis membrane technology advanced person, the trade effluent for high pollution presents intractability and increases, and fouling membrane and flux decline rapidly, the shortcoming that work-ing life is short, cost is high.
Summary of the invention
The object of the invention is to, for deficiency of the prior art, provide a kind of printing and dyeing wastewater recovery and disposal method, ensure that final outflow water water conditioning is up to standard.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of printing and dyeing wastewater recovery and disposal method, its innovative point is: dyeing waste water is entered equalizing tank, coagulative precipitation tank, composite aeration activated sludge reaction pond, hydrolysis acidification pool, contact-oxidation pool, second pond, membrane biological reaction pond and reverse osmosis reaction tank through grid canal successively, recycles.
On this basis, described dyeing waste water enters the concrete operations after coagulative precipitation tank by equalizing tank: in dyeing waste water, drop into flocculation agent, coagulant aids, by the ceaselessly stirring action of stirrer in reaction zone, and control stirring dynamics and the churning time of stirrer, by flocculation agent, coagulant aids fully mixes with waste water, in the absorption of flocculation agent and coagulant aids, net is caught, under crane span structure function, pollutent in waste water and medicament start cohesion, final formation flco, then be sink at the bottom of pond at disengaging zone flco by the action of gravity suffered by self, and the scraping and sucking machine being timed work enters sludge thickener.
On this basis, described waste water carries out composite aeration active sludge treatment after entering aerating activated sludge reaction tank, is specially in conjunction with air blast micro-pore aeration and jet-flow aeration two kinds of modes.
On this basis, described by aerating activated sludge reaction tank waste water out successively through hydrolysis acidification pool, contact-oxidation pool and second pond, wherein, 8 ~ more than 10h between the hydrolysis acidification pool stopping time, the contact-oxidation pool residence time 6 ~ more than 8h, then enters membrane biological reaction pond.
On this basis, when described waste water enters membrane biological reaction pond, the residence time is 5 ~ more than 7h.
On this basis, described waste water out enters reverse osmosis reaction tank afterwards from membrane biological reaction pond, and the residence time is 4 ~ more than 8h.
Beneficial effect of the present invention is as follows:
(1) printing and dyeing wastewater recovery and disposal method of the present invention, ensure advanced treatment system particularly reverse osmosis system steady running, it is necessary that the coagulation-settlement process arranged carries out pre-treatment, in coagulative precipitation tank, waste water obtains purification, at this moment the pollution concentration in water outlet will be greatly diminished, and can alleviate the operating load of follow-up biochemical treatment facility.
(2) printing and dyeing wastewater recovery and disposal method of the present invention, adopt the biological treatment reactor of composite aeration mode, this aeration pattern effectively combines traditional air blast micro-pore aeration and jet-flow aeration, and it has following distinguishing feature:
A) reaction tank structure is simple, and capital construction cost is low;
B) reaction tank adopts the form that gas blower aeration and jet-flow aeration complete in same pond, ensures high efficiency oxygen supply, mass transfer ability;
C) darker pond can be had dark, ensure there is well-beaten function bottom pond by jet-flow aeration, can not dead band be formed;
D) middle level blast aeration, has air lift rising function, maintains the oxyty in upper water simultaneously;
E) microorganism total amount in reactor can be made to maintain higher level, improve volumetric loading, strengthen anti-load impact ability.
(3) printing and dyeing wastewater recovery and disposal method of the present invention, high efficiency oxygen supply, mass transfer are the cores improving volumetric loading.Its air, the transformation efficiency of water oxygen high (coefficient of oxygen utilization can reach 40%-50%), makes full use of water flow jet simultaneously and improves the alternate mass transfer of gas, water and mud three, the specific surface area of microorganism is increased, enhances the contact with liquid.Bottom adopts advanced jet diffusion aeration mode, has merged current high-speed circulating jet-flow aeration, thing and has strengthened the technology such as transmission, turbulent shear mutually, had deep well aeration and liquefaction sewage sludge bed feature.It is dark that reaction tank can have very large pond, not by the restriction of fan pressure, decreases floor space.In reactor, activated sludge concentration is high, and anti impulsion load ability is strong, can be applicable to the organic sewage process of various influent quality.Core jet diffusion aeration mode can improve the ability of bacterium and microbial reproduction, renewal, variation.
(4) printing and dyeing wastewater recovery and disposal method of the present invention, first step aerobic treatment is run under high pollution concentration, high-load condition, improve the utilization ratio of structures volume, the particularly introducing of composite aeration activated sludge process, make its anti impulsion load ability and oxygenation capacity stronger, volumetric loading is higher.The introducing of acidication improves the biodegradability energy of organic pollutant, is conducive to second stage aerobic treatment.Second stage aerobic treatment is run under low stain concentration, low load condition, mainly for the hardly degraded organic substance in waste water, extends contact time, and ensures the degradation capability to it, ensures that final outflow water water conditioning is up to standard.
(5) printing and dyeing wastewater recovery and disposal method of the present invention, second pond in traditional activated sludge process is replaced with the high efficiency separation of membrane technique, realize the incomparable mud-water separation of traditional technology and sludge condensation effect, eliminate the impact of sludge bulking, and significantly improve the concentration of active sludge in aeration tank, eliminate sludge recirculation system, substantially prolongs mud age, decrease surplus sludge volume, and by film to suspended substance, organic efficient crown_interception in waste water, substantially increase process effluent quality.Compared with traditional biochemical water technology, MBR has following principal feature: processing efficiency is high, effluent quality good; Facility compact, floor space are little; Easy realization controls automatically, operational management is simple.
(6) printing and dyeing wastewater recovery and disposal method of the present invention, by Powdered Activated Carbon process and ultrafiltration, reverse osmosis process are combined, efficiently solve dyeing waste water advanced treatment problem, in water quality, the index such as COD value, pH value, colourity, SS, total hardness all reaches dyeing Treated sewage reusing standard, traditional two stage biological process basis adds MBR technique, by film to suspended substance, organic efficient crown_interception in waste water, substantially increase process effluent quality, make waste water adopt reverse-osmosis treated reuse more reliable.
Accompanying drawing explanation
Be further detailed below in conjunction with the drawings and specific embodiments.
Fig. 1 is processing flow chart of the present invention.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
As shown in Figure 1: method of the present invention can guarantee that process stable water outlet is up to standard, successful operation on multiple case history.Concrete treating processes is as follows:
A () dyeing waste water remove portion suspended substance after grid enters into equalizing tank, entering the concrete operations after coagulative precipitation tank by equalizing tank is: in dyeing waste water, drop into flocculation agent, coagulant aids, by the ceaselessly stirring action of stirrer in reaction zone, and control stirring dynamics and the churning time of stirrer, by flocculation agent, coagulant aids fully mixes with waste water, in the absorption of flocculation agent and coagulant aids, net is caught, under crane span structure function, pollutent in waste water and medicament start cohesion, final formation flco, then be sink at the bottom of pond at disengaging zone flco by the action of gravity suffered by self, and the scraping and sucking machine being timed work enters sludge thickener.
B () waste water carries out composite aeration active sludge treatment after entering aerating activated sludge reaction tank, be specially in conjunction with air blast micro-pore aeration and jet-flow aeration two kinds of modes.
C (), by aerating activated sludge reaction tank waste water out successively through hydrolysis acidification pool, contact-oxidation pool and second pond, wherein, 8h between the hydrolysis acidification pool stopping time, contact-oxidation pool residence time 6h, then enters membrane biological reaction pond.
When () waste water enters membrane biological reaction pond d, the residence time is 5h.
E () waste water out enters reverse osmosis reaction tank afterwards from membrane biological reaction pond, the residence time is 4h.
Produce dense water and Zhong Shui through process, in gained, water meets reuse standard, and the dense water of gained delivers to designated area.
Embodiment 2
On the basis of embodiment 1, change the operating parameter in each operation, specific as follows:
A () dyeing waste water remove portion suspended substance after grid enters into equalizing tank, entering the concrete operations after coagulative precipitation tank by equalizing tank is: in dyeing waste water, drop into flocculation agent, coagulant aids, by the ceaselessly stirring action of stirrer in reaction zone, and control stirring dynamics and the churning time of stirrer, by flocculation agent, coagulant aids fully mixes with waste water, in the absorption of flocculation agent and coagulant aids, net is caught, under crane span structure function, pollutent in waste water and medicament start cohesion, final formation flco, then be sink at the bottom of pond at disengaging zone flco by the action of gravity suffered by self, and the scraping and sucking machine being timed work enters sludge thickener.
B () waste water carries out composite aeration active sludge treatment after entering aerating activated sludge reaction tank, be specially in conjunction with air blast micro-pore aeration and jet-flow aeration two kinds of modes.
C (), by aerating activated sludge reaction tank waste water out successively through hydrolysis acidification pool, contact-oxidation pool and second pond, wherein, 10h between the hydrolysis acidification pool stopping time, contact-oxidation pool residence time 8h, then enters membrane biological reaction pond.
When () waste water enters membrane biological reaction pond d, the residence time is 7h.
E () waste water out enters reverse osmosis reaction tank afterwards from membrane biological reaction pond, the residence time is 8h.
Produce dense water and Zhong Shui through process, in gained, water meets reuse standard, and the dense water of gained delivers to designated area.
Embodiment 3
On the basis of embodiment 1, change the operating parameter in each operation, specific as follows:
A () dyeing waste water remove portion suspended substance after grid enters into equalizing tank, entering the concrete operations after coagulative precipitation tank by equalizing tank is: in dyeing waste water, drop into flocculation agent, coagulant aids, by the ceaselessly stirring action of stirrer in reaction zone, and control stirring dynamics and the churning time of stirrer, by flocculation agent, coagulant aids fully mixes with waste water, in the absorption of flocculation agent and coagulant aids, net is caught, under crane span structure function, pollutent in waste water and medicament start cohesion, final formation flco, then be sink at the bottom of pond at disengaging zone flco by the action of gravity suffered by self, and the scraping and sucking machine being timed work enters sludge thickener.
B () waste water carries out composite aeration active sludge treatment after entering aerating activated sludge reaction tank, be specially in conjunction with air blast micro-pore aeration and jet-flow aeration two kinds of modes.
C (), by aerating activated sludge reaction tank waste water out successively through hydrolysis acidification pool, contact-oxidation pool and second pond, wherein, 9h between the hydrolysis acidification pool stopping time, contact-oxidation pool residence time 9h, then enters membrane biological reaction pond.
When () waste water enters membrane biological reaction pond d, the residence time is 6h.
E () waste water out enters reverse osmosis reaction tank afterwards from membrane biological reaction pond, the residence time is 6h.
Produce dense water and Zhong Shui through process, in gained, water meets reuse standard, and the dense water of gained delivers to designated area.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (6)
1. a printing and dyeing wastewater recovery and disposal method, it is characterized in that: dyeing waste water is entered equalizing tank, coagulative precipitation tank, composite aeration activated sludge reaction pond, hydrolysis acidification pool, contact-oxidation pool, second pond, membrane biological reaction pond and reverse osmosis reaction tank through grid canal successively, recycles.
2. printing and dyeing wastewater recovery and disposal method according to claim 1, it is characterized in that: described dyeing waste water enters the concrete operations after coagulative precipitation tank by equalizing tank and is: in dyeing waste water, drop into flocculation agent, coagulant aids, by the ceaselessly stirring action of stirrer in reaction zone, and control the stirring dynamics of stirrer and churning time is, by flocculation agent, coagulant aids fully mixes with waste water, in the absorption of flocculation agent and coagulant aids, net is caught, under crane span structure function, pollutent in waste water and medicament start cohesion, final formation flco, then be sink at the bottom of pond at disengaging zone flco by the action of gravity suffered by self, and the scraping and sucking machine being timed work enters sludge thickener.
3. printing and dyeing wastewater recovery and disposal method according to claim 1, is characterized in that: described waste water carries out composite aeration active sludge treatment after entering aerating activated sludge reaction tank, is specially in conjunction with air blast micro-pore aeration and jet-flow aeration two kinds of modes.
4. printing and dyeing wastewater recovery and disposal method according to claim 1, it is characterized in that: described by aerating activated sludge reaction tank waste water out successively through hydrolysis acidification pool, contact-oxidation pool and second pond, wherein, 8 ~ more than 10h between the hydrolysis acidification pool stopping time, the contact-oxidation pool residence time 6 ~ more than 8h, then enters membrane biological reaction pond.
5. printing and dyeing wastewater recovery and disposal method according to claim 1, is characterized in that: when described waste water enters membrane biological reaction pond, and the residence time is 5 ~ more than 7h.
6. printing and dyeing wastewater recovery and disposal method according to claim 1, is characterized in that: described waste water out enters reverse osmosis reaction tank afterwards from membrane biological reaction pond, and the residence time is 4 ~ more than 8h.
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| CN106045191A (en) * | 2016-05-23 | 2016-10-26 | 广东全务环保科技有限公司 | System and process for recycling papermaking wastewater |
| CN106396260A (en) * | 2016-10-11 | 2017-02-15 | 天津科技大学 | Improved deep treatment method of printing and dyeing wastewater |
| JP2018512257A (en) * | 2015-09-01 | 2018-05-17 | ジエンシー ジェイディエル エンバイロメンタル プロテクション カンパニー リミテッド | Method and system for sewage treatment with zero sludge discharge |
| CN108623091A (en) * | 2018-04-23 | 2018-10-09 | 嘉兴市锦福缩染有限公司 | A kind of dyeing textile sewage disposal system |
| CN108862853A (en) * | 2018-07-04 | 2018-11-23 | 东华大学 | A kind of method that Zero-valent Iron Magneto separate strengthens Dyeing and Printing Wastewater Biological Treatment |
| CN109534598A (en) * | 2018-12-06 | 2019-03-29 | 上海清潺汇环境科技有限公司 | A kind of novel printing-dyeing waste water treatment process |
| CN110342749A (en) * | 2019-07-29 | 2019-10-18 | 安徽能泰高科环保技术有限公司 | Sweet potato waste water integrated sewage treating apparatus and its processing method |
| CN113072261A (en) * | 2021-04-22 | 2021-07-06 | 广东瑞星环境科技有限公司 | Advanced treatment method for textile printing and dyeing wastewater |
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| JP2018512257A (en) * | 2015-09-01 | 2018-05-17 | ジエンシー ジェイディエル エンバイロメンタル プロテクション カンパニー リミテッド | Method and system for sewage treatment with zero sludge discharge |
| CN106045191A (en) * | 2016-05-23 | 2016-10-26 | 广东全务环保科技有限公司 | System and process for recycling papermaking wastewater |
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| CN106396260A (en) * | 2016-10-11 | 2017-02-15 | 天津科技大学 | Improved deep treatment method of printing and dyeing wastewater |
| CN108623091A (en) * | 2018-04-23 | 2018-10-09 | 嘉兴市锦福缩染有限公司 | A kind of dyeing textile sewage disposal system |
| CN108862853A (en) * | 2018-07-04 | 2018-11-23 | 东华大学 | A kind of method that Zero-valent Iron Magneto separate strengthens Dyeing and Printing Wastewater Biological Treatment |
| CN109534598A (en) * | 2018-12-06 | 2019-03-29 | 上海清潺汇环境科技有限公司 | A kind of novel printing-dyeing waste water treatment process |
| CN110342749A (en) * | 2019-07-29 | 2019-10-18 | 安徽能泰高科环保技术有限公司 | Sweet potato waste water integrated sewage treating apparatus and its processing method |
| CN113072261A (en) * | 2021-04-22 | 2021-07-06 | 广东瑞星环境科技有限公司 | Advanced treatment method for textile printing and dyeing wastewater |
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Application publication date: 20150812 |