CN101880103A - Printing-dying wastewater recycling treatment process - Google Patents

Printing-dying wastewater recycling treatment process Download PDF

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Publication number
CN101880103A
CN101880103A CN200910026670XA CN200910026670A CN101880103A CN 101880103 A CN101880103 A CN 101880103A CN 200910026670X A CN200910026670X A CN 200910026670XA CN 200910026670 A CN200910026670 A CN 200910026670A CN 101880103 A CN101880103 A CN 101880103A
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membrane
treatment
water
printing
mbr
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向飞
黄圣散
杨瑜芳
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Toray Fibers and Textiles Research Laboratories China Co Ltd
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Toray Fibers and Textiles Research Laboratories China Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention belongs to the field of environmental engineering, and particularly relates to a printing-dying wastewater recycling treatment process. The printing-dying wastewater recycling treatment process comprises the following steps of: feeding the printing-dying wastewater subjected to filtration and neutralization reaction to an aerobic biological tank to perform biochemical treatment, performing membrane filtration treatment on the water after the biochemical treatment through a membrane component arranged in a membrane bioreactor (MBR), continuously feeding polyaluminium chloride (PAC) into an MBR tank on line at the same time, and finally feeding the membrane filtration treatment water to a reverse osmosis (RO) system to perform advanced treatment to obtain recyclable water. By feeding the PAC into the MBR tank, the process can effectively relieve the development tendency of MBR membrane pollution and further improve the quality of the MBR discharged water so as to improve the running stability of the RO system; and the PAC feeding process has the advantages of simple operation and management, quick response, low running expense and convenient popularization and application.

Description

A kind of printing-dying wastewater recycling treatment process
Technical field
The invention belongs to field of environment engineering, relate to a kind of wastewater recycling treatment process, be specifically related to a kind of printing-dying wastewater recycling treatment process.
Background technology
Printing and dyeing industry has one of conventional column industry of advantage as China, obtained fast development since the nineties in 20th century, its waste water day quantity discharged be 3 * 10 6~4 * 10 6m 3, be one of blowdown rich and influential family in the every profession and trade.Under national energy-saving and emission-reduction policy background, dyeing reduces discharging pressure and continues to exist as the high pollution industry.And, strict day by day along with the dyeing waste water emission standard, the rising steadily and the raising day by day of effluent charge of water rate, the reuse of dyeing waste water is just causing increasing attention.
Dyeing waste water is meant the composite waste that the waste water that discharges of each operation mixes in the printing and dyeing course of processing.Mainly comprise: destarch, kiering, bleaching, the mercerizing waste water of pretreatment stage (as singe, destarch, kiering, bleaching, mercerising) discharging; The dyeing waste-water of dyeing stage discharging; The printing waste water of stamp stage discharging and the waste water of soaping; The arrangement waste water of arrangement stage discharging.Dyeing waste water water quality is difference to some extent with the different of starting material, production kind and technology, mainly contains slurry, dyestuff, fiber impurity and inorganic salt etc., has five big features such as " high COD, high chroma, high pH value, difficult degradation and changeableization of water quality ".
Traditional treatment method of printing and dying wastewater mainly is physico-chemical process and biological process.It is simple that physico-chemical process such as absorption, filtration, coagulation, electrolysis and chemical oxidation etc. have equipment, the advantage of easy and simple to handle and technical maturity, but this class treatment process can not be eliminated organic pollutant usually fully, and need to consume a large amount of chemical agents, the working cost height, and cause secondary pollution easily.Biological process is simple to operate, and working cost is low, and the advantage of non-secondary pollution has obtained using widely in the processing of dyeing waste water.But biological process exists himself insurmountable problem: can only remove BOD in the dyeing waste water (BOD-biochemical oxygen demand (BOD) (when the organism in the water is decomposed by aerobic microbiological required oxygen amount)), (COD is meant that chemical oxygen demand (COD) is (with the oxidant content that organism consumed in the chemical oxidizing agent oxidizing water for COD, oxygen consuming amount is represented)), the removal effect of particularly poisonous hardly degraded organic substance and colourity is not obvious, and the active sludge settleability is poor, the low more high shortcoming of handling that reaches excess sludge of biochemical reaction rate.
Membrane technique is as a kind of new separation technology, can effectively purify waste water, can reclaim some useful matteies again, have characteristics such as energy-conservation, no phase transformation, equipment be simple, easy to operate simultaneously, therefore in wastewater treatment, obtain using widely and having shown vast potential for future development.In recent years, diversified film combination process is more and more paid close attention to.The film integrated system that different types of film is combined can be brought into play the advantage of various membrane techniquies, can form the novel process of waste water advanced processing thus.Especially " two embrane method " waste water recycling treatment technology of combining with reverse osmosis (RO) technology of membrane bioreactor (MBR), can remedy the deficiency of independent use MBR technology and RO technology, give full play to its effect, this will be a new direction of dyeing waste water advanced treatment and reuse.MBR is exactly the biochemical reaction system that integrates the biological degradation of high performance membrane isolation technique and bio-reactor.It realizes mud-water separation with the settling tank in the alternative traditional activated sludge process of membrane module (ultrafiltration or microfiltration membrane), has improved sludge concentration and speed of reaction greatly, has strengthened the impact resistance of system; Realized the control respectively of SRT (mud age) and HRT (hydraulic detention time); Improve the pollutent residence time, increased the long bacterium of growth time, had a solid-liquid separation rate height, effluent quality is good, processing efficiency is high, take up an area of advantages such as the little and operational management in space is simple.The MBR water outlet can further be held back organic substance, ion, hardness and metallics etc. by the RO film, thereby the MBR treating water is carried out advanced treatment directly as the water inlet of RO system, reaches the purpose of cycling utilization of wastewater.
Though MBR+RO film integrated system has so many advantage, and successfully overcome the purpose that the traditional wastewater treatment technology is difficult to degree of depth Treatment for Reuse dyeing waste water, a kind of MBR+RO treatment method of printing and dying wastewater based on membrane technique is disclosed as patent CN101041532, to get settled solution behind the comprehensive wastewater process flocculating settling, clear liquor carries out biochemical treatment through membrane bioreactor and gets dialyzate, and dialyzate gets water reuse in the reverse osmosis dialyzate through the reverse osmosis isolation system.
But be difficult to the high-enriched organics of being degraded owing to contain multiple dyestuff, auxiliary agent, chemical sizwe etc. in the dyeing waste water, make that the strainability of MBR pond mud is relatively poor, stop up fenestra easily, cause that the MBR film pollutes by microbial biochemical.Simultaneously, the organism of difficult degradation can see through the MBR film greatly, causes the organic concentration in the MBR water outlet still higher, thereby influences the operation stability of follow-up RO film.
Film pollutes and is meant that particulate in the mixed solution, colloidal particle or solute macromole and film exist physics, chemistry, biochemistry or mechanical effect, cause the accumulation of face or fenestra internal adsorption, deposition and microorganism at the film water interface, cause membrane pore size to diminish or stop up, the phenomenon that film is produced see through flow and stalling characteristic to reduce significantly.Except the water quality treatment effect, it is to influence the most key factor of MBR operation control that film pollutes, and also is the outstanding problem that limits its process economy.
Summary of the invention
The objective of the invention is provides a kind of effective binding film technology and materialization treatment technology at the with serious pollution situation of film in the process that adopts membrane technique Treatment for Reuse dyeing waste water, simple to operate, the printing-dying wastewater recycling New Process for Treatment that running cost is low.
Purpose of the present invention can reach by following measure:
A kind of printing-dying wastewater recycling treatment process, it is characterized in that earlier dyeing waste water being entered the aerobe pond carries out biochemical treatment, water after the biochemical treatment enters the membrane module of membrane bioreactor pond in being arranged in membrane bioreactor and carries out the membrane filtration processing, simultaneously in the membrane bioreactor pond, add polymerize aluminum chloride, mud mixed liquid in the membrane bioreactor pond is back to the aerobe pond, carries out advanced treatment and obtains reuse and produce water but the membrane filtration treat effluent enters reverse osmosis system.Accompanying drawing 1 is seen in its technical process.
The dosing method of described polymerize aluminum chloride (PAC) is that the PAC on-line continuous is added in the MBR pond.On-line continuous adds and is meant one day 24 hours and uninterruptedly adds, and the speed that adds is decided according to the amount that adds, and the amount that adds is determined by MBR filtration treatment amount.
According to MBR filtration treatment amount, on-line continuous adds the dosage of PAC and counts 5mg/L~50mg/L with effective Al concentration.Wherein, can not effectively improve sludge filtration performance and MBR film effluent quality during the dosage of polymerize aluminum chloride (PAC)<Smg/L; Cause cost of water treatment to improve during the dosage of polymerize aluminum chloride (PAC)>50mg/L.
Process filtration earlier of described dyeing waste water and neutralization reaction enter the aerobe pond again and are for further processing.
It is the fine fack of 0.5~3mm that spacing is adopted in described filtration, to remove the bigger suspended substance of particle in the decontaminated water, protects the normal operation of follow-up equipment, and prevents the deposition of large granular impurity at face.
Described neutralization reaction adopts the vitriol oil (98%) to regulate wastewater pH to 6-9, and this is because the dyeing waste water meta-alkalescence is unfavorable for the subsequent biological treatment reaction.
Described MBR membrane module is hollow fiber film assembly or plate film assembly, is preferably plate film assembly.
Described MBR membrane material is a polyvinylidene difluoride (PVDF), and its membrane pore size is 0.04~0.40 μ m, is preferably 0.08 μ m~0.40 μ m.The aperture of film is the important factor of decision membrane filtration effect, and membrane pore size can not be held back the organic substance in the waste water during greater than 0.40 μ m effectively, and stifled easily.
Membrane module arranged beneath in described membrane bioreactor (MBR) pond has aerator, and the upstream that aeration produces washes away the film surface, prevents deposition and the absorption of mud granule on the film surface, thus the development trend of effective decelerating membrane pollution.
The sludge concentration in the MBR pond among the present invention remains on 5~18g/L, mud mixed liquid in the membrane cisterna is back to the aerobe pond, quantity of reflux is 150~300% of a membrane filtration aquifer yield, make the sludge concentration in the aerobe pond can keep a higher level, thereby improve the processing efficiency of whole biological treatment system.Membrane bioreactor is a kind of high-efficiency sewage treatment technology that combines membrane separation technique and mud method, because the filteration of film, biology is trapped within the bio-reactor fully, has realized that hydraulic detention time and the thorough of sludge age separate, and makes to keep higher MLSS in the bio-reactor.One of difference of MBR and traditional activated sludge process is exactly that the MBR sludge concentration is than traditional sludge method height, sludge concentration in the MBR reactor is one of important parameter of MBR operation, it not only influences the removal effect of pollutent, also influence the water production rate of membrane module, therefore in this patent, provide suitable sludge concentration scope.Quantity of reflux also is as a same reason.
Described reverse osmosis (RO) system adopts antipollution RO film, and material is a polymeric amide, and its diaphragm is electric neutrality, has low pressure operation, water production rate height, ratio of desalinization height, advantage that anti-fouling performance is good.The purpose of RO system is hardness, ion and the metallics of removing in the MBR water outlet, further holds back simultaneously and is partly dissolved organic matter matter, nitrogen, phosphorus etc., guarantees that effectively RO produces water and satisfies the reuse requirement.
Beneficial effect of the present invention
The present invention had both overcome the defective that the traditional wastewater treatment technology is difficult to degree of depth Treatment for Reuse dyeing waste water, efficiently solved in the process of membrane technique Treatment for Reuse dyeing waste water the with serious pollution situation of film again to a certain extent.
The particulate that exists in the waste water solution, colloid or solute macromole are the major reasons that causes that film pollutes, the affiliation that adds of PAC produces flco among the present invention, but MBR itself just contains higher MLSS (mixed liquor suspended solid, MLSS) concentration, therefore the flco that produces of PAC not only can not quicken film and pollutes, and PAC can cause larger molecular organics matter and the colloid that film pollutes by active adsorption easily, except making water quality treatment improves, also can effectively reduce the MBR film and pollute speed, and then prolong the cleaning interval of MBR film.
And, because the further raising of MBR effluent quality, when the MBR water outlet enters the RO system when further holding back pollution substance, ion, hardness and metallics, can effectively slow down absorption and the deposition of organism on RO film surface, reduce the generation probability of RO film organic contamination, thereby improve the operation stability of RO system.
PAC of the present invention directly is added to the MBR pond, and flocculation and biological treatment are carried out simultaneously, do not need extra flocculate and clarify device, and floor space is little.And it is simple that PAC adds the process operation management, instant effect, and working cost is low, and is easy to utilize.In addition, PAC is very little to the corrodibility of equipment, to environment toxicological harmless effect.
RO among the present invention produces water can reach the water quality controlling index of " reuse of wastewater engineering design standard " reuse water in (GB50335-2002) as cooling water.
Description of drawings
Fig. 1 is the printing-dying wastewater recycling treatment process schema.
Embodiment
Embodiment 1
As Fig. 1, the present invention tests treatment capacity by 20m 3/ d design; Dyeing waste water enters the neutralization reaction pond again after the 0.5mm fine fack is removed the bigger impurity of particle, regulate wastewater pH to 7 by adding the vitriol oil, enter the aerobe pond then, sludge concentration remains on about 10g/L, the most organism of degrading, the water outlet of aerobe pond enters the MBR pond, and the mud mixed liquid in the MBR pond is back to the aerobe pond, and quantity of reflux is 200% of a membrane filtration aquifer yield; On-line continuous adds polymerize aluminum chloride (PAC) in the MBR pond simultaneously, according to the membrane filtration aquifer yield, is that 15mg/L (with effective Al densitometer) adds PAC by dosage; MBR filters water outlet by the plate film assembly in the reaction tank, and membrane material is a polyvinylidene difluoride (PVDF), and membrane pore size is 0.08 μ m; At last, but direct reuse is in industrial production after RO system advanced treatment in the MBR water outlet, and the RO system adopts antipollution RO film, and diaphragm is electric neutrality.
Disposition is as shown in table 1, removes cited pollutent in the table 1, and RO produces other pollutent indexs of water and all reaches reuse water in " reuse of wastewater engineering design standard " (GB 50335-2002) as the water quality controlling index of cooling water.
Simultaneously, MBR film pollution speed is 0.12kPa/d, and the RO membrance chemistry cleaning interval is 3 months.
Table 1 test water-in and water-out water quality
Project Influent concentration The MBR water outlet RO produces water
??COD Cr(chemical oxygen demand (COD)) ??960mg/L ??43mg/L ??3mg/L
Specific conductivity ??1480μS/cm ??1520μS/cm ??31μS/cm
Embodiment 2
As Fig. 1, the present invention tests treatment capacity by 20m 3/ d design; Dyeing waste water enters the neutralization reaction pond again after the 3mm fine fack is removed the bigger impurity of particle, regulate wastewater pH to 8 by adding the vitriol oil, enter the aerobe pond then, sludge concentration remains on about 8g/L, the most organism of degrading, the water outlet of aerobe pond enters the MBR pond, and the mud mixed liquid in the MBR pond is back to the aerobe pond, and quantity of reflux is 300% of a membrane filtration aquifer yield; On-line continuous adds polymerize aluminum chloride (PAC) in the MBR pond simultaneously, according to the membrane filtration aquifer yield, is that 50mg/L (with effective Al densitometer) adds PAC by dosage; MBR filters water outlet by the hollow fiber film assembly in the reaction tank, and membrane material is a polyvinylidene difluoride (PVDF), and membrane pore size is 0.20 μ m; At last, but direct reuse is in industrial production after RO system advanced treatment in the MBR water outlet, and the RO system adopts antipollution RO film, and diaphragm is electric neutrality.
Disposition is as shown in table 2, removes cited pollutent in the table 2, and RO produces other pollutent indexs of water and all reaches reuse water in " reuse of wastewater engineering design standard " (GB 50335-2002) as the water quality controlling index of cooling water.Simultaneously, MBR film pollution speed is 0.19kPa/d, and the RO membrance chemistry cleaning interval is 2 months.
Table 2 test water-in and water-out water quality
Project Influent concentration The MBR water outlet RO produces water
??COD Cr(chemical oxygen demand (COD)) ??870mg/L ??46mg/L ??4mg/L
Specific conductivity ??1410μS/cm ??1450μS/cm ??38μS/cm
Embodiment 3
As Fig. 1, the present invention tests treatment capacity by 20m 3/ d design; Dyeing waste water enters the neutralization reaction pond again after the 1mm fine fack is removed the bigger impurity of particle, regulate wastewater pH to 6.5 by adding the vitriol oil, enter the aerobe pond then, sludge concentration remains on about 15g/L, the most organism of degrading, the water outlet of aerobe pond enters the MBR pond, and the mud mixed liquid in the MBR pond is back to the aerobe pond, and quantity of reflux is 150% of a membrane filtration aquifer yield; On-line continuous adds polymerize aluminum chloride (PAC) in the MBR pond simultaneously, according to the membrane filtration aquifer yield, is that 10mg/L (with effective Al densitometer) adds PAC by dosage; MBR filters water outlet by the plate film assembly in the reaction tank, and membrane material is a polyvinylidene difluoride (PVDF), and membrane pore size is 0.40 μ m; At last, but direct reuse is in industrial production after RO system advanced treatment in the MBR water outlet, and the RO system adopts antipollution RO film, and diaphragm is electric neutrality.
Disposition is as shown in table 3, removes cited pollutent in the table 3, and RO produces other pollutent indexs of water and all reaches reuse water in " reuse of wastewater engineering design standard " (GB 50335-2002) as the water quality controlling index of cooling water.Simultaneously, MBR film pollution speed is 0.15kPa/d, and the RO membrance chemistry cleaning interval is 2 months.
Table 3 test water-in and water-out water quality
Project Influent concentration The MBR water outlet RO produces water
??COD Cr(chemical oxygen demand (COD)) ??910mg/L ??48mg/L ??4mg/L
Specific conductivity ??1450μS/cm ??1490μS/cm ??34μS/cm
Comparative Examples 1
In the process that adopts MBR+RO system Treatment for Reuse dyeing waste water, treatment capacity is pressed 20m 3/ d design; Dyeing waste water enters the neutralization reaction pond again after the 0.5mm fine fack is removed the bigger impurity of particle, regulate wastewater pH to 7 by adding the vitriol oil, enter the aerobe pond then, sludge concentration remains on about 10g/L, the most organism of degrading, the water outlet of aerobe pond enters the MBR pond, and the mud mixed liquid in the MBR pond is back to the aerobe pond, and quantity of reflux is 200% of a membrane filtration aquifer yield; MBR filters water outlet by the plate film assembly in the reaction tank, and membrane material is a polyvinylidene difluoride (PVDF), and membrane pore size is 0.08 μ m; At last, but direct reuse is in industrial production after RO system advanced treatment in the MBR water outlet, and the RO system adopts antipollution RO film, and diaphragm is electric neutrality.
Disposition is as shown in table 4, removes cited pollutent in the table 4, and RO produces other pollutent indexs of water and all reaches reuse water in " reuse of wastewater engineering design standard " (GB 50335-2002) as the water quality controlling index of cooling water.Simultaneously, MBR film pollution speed is 0.25kPa/d, and the RO membrance chemistry cleaning interval is 1 month.
Table 4 test water-in and water-out water quality
Project Influent concentration The MBR water outlet RO produces water
??COD Cr(chemical oxygen demand (COD)) ??960mg/L ??115mg/L ??6mg/L
Specific conductivity ??1480μS/cm ??1470μS/cm ??31μS/cm
Comparative Examples 2
In the process that adopts MBR+RO system Treatment for Reuse dyeing waste water, treatment capacity is pressed 20m 3/ d design; Dyeing waste water enters the neutralization reaction pond again after the 3mm fine fack is removed the bigger impurity of particle, regulate wastewater pH to 8 by adding the vitriol oil, enter the aerobe pond then, sludge concentration remains on about 8g/L, the most organism of degrading, the water outlet of aerobe pond enters the MBR pond, and the mud mixed liquid in the MBR pond is back to the aerobe pond, and quantity of reflux is 300% of a membrane filtration aquifer yield; MBR filters water outlet by the hollow fiber film assembly in the reaction tank, and membrane material is a polyvinylidene difluoride (PVDF), and membrane pore size is 0.20 μ m; At last, but direct reuse is in industrial production after RO system advanced treatment in the MBR water outlet, and the RO system adopts antipollution RO film, and diaphragm is electric neutrality.
Disposition is as shown in table 5, removes cited pollutent in the table 5, and RO produces other pollutent indexs of water and all reaches reuse water in " reuse of wastewater engineering design standard " (GB 50335-2002) as the water quality controlling index of cooling water.Simultaneously, MBR film pollution speed is 0.35kPa/d, and the RO membrance chemistry cleaning interval is 20d.
Table 5 test water-in and water-out water quality
Project Influent concentration The MBR water outlet RO produces water
??COD Cr(chemical oxygen demand (COD)) ??870mg/L ??145mg/L ??8mg/L
Specific conductivity ??1410μS/cm ??1400μS/cm ??38μS/cm
Comparative Examples 3
In the process that adopts MBR+RO system Treatment for Reuse dyeing waste water, treatment capacity is pressed 20m 3/ d design; Dyeing waste water enters the neutralization reaction pond again after the 1mm fine fack is removed the bigger impurity of particle, regulate wastewater pH to 6.5 by adding the vitriol oil, enter the aerobe pond then, sludge concentration remains on about 15g/L, the most organism of degrading, the water outlet of aerobe pond enters the MBR pond, and the mud mixed liquid in the MBR pond is back to the aerobe pond, and quantity of reflux is 150% of a membrane filtration aquifer yield; MBR filters water outlet by the plate film assembly in the reaction tank, and membrane material is a polyvinylidene difluoride (PVDF), and membrane pore size is 0.40 μ m; At last, but direct reuse is in industrial production after RO system advanced treatment in the MBR water outlet, and the RO system adopts antipollution RO film, and diaphragm is electric neutrality.
Disposition is as shown in table 6, removes cited pollutent in the table 6, and RO produces other pollutent indexs of water and all reaches reuse water in " reuse of wastewater engineering design standard " (GB 50335-2002) as the water quality controlling index of cooling water.Simultaneously, MBR film pollution speed is 0.28kPa/d, and the RO membrance chemistry cleaning interval is 25d.
Table 6 test water-in and water-out water quality
Project Influent concentration The MBR water outlet RO produces water
??COD Cr(chemical oxygen demand (COD)) ??910mg/L ??136mg/L ??7mg/L
Specific conductivity ??1450μS/cm ??1440μS/cm ??34μS/cm
By the Comparative Examples explanation, on-line continuous adds polymerize aluminum chloride in the MBR pond, part in can the active adsorption mud mixed liquid is difficult to the insoluble organic substance and the colloid of biochemical degradation, improves sludge filtration performance and MBR film effluent quality, reduces the MBR film and pollutes speed.The further raising of MBR effluent quality can effectively slow down absorption and the deposition of organism on RO film surface, reduces the generation probability of RO film organic contamination, prolongs the cleaning interval of RO film, thereby improves the operation stability of RO system.

Claims (10)

1. printing-dying wastewater recycling treatment process, it is characterized in that earlier dyeing waste water being introduced the aerobe pond carries out biochemical treatment, water after the biochemical treatment enters the membrane module of membrane bioreactor pond in being arranged in membrane bioreactor and carries out the membrane filtration processing, simultaneously in the membrane bioreactor pond, add polymerize aluminum chloride, mud mixed liquid in the membrane bioreactor pond is back to the aerobe pond, carries out advanced treatment and obtains reuse and produce water but the membrane filtration treat effluent enters reverse osmosis system.
2. printing-dying wastewater recycling treatment process according to claim 1, the dosing method that it is characterized in that described polymerize aluminum chloride are that the polymerize aluminum chloride on-line continuous is added in the membrane bioreactor pond.
3. printing-dying wastewater recycling treatment process according to claim 1, the dosage that it is characterized in that described polymerize aluminum chloride is counted 5mg/L~50mg/L by the decision of membrane bioreactor filtration treatment amount with effective Al concentration.
4. printing-dying wastewater recycling treatment process according to claim 1 is characterized in that process filtration earlier of described dyeing waste water and neutralization reaction enter the aerobe pond again and be for further processing.
5. printing-dying wastewater recycling treatment process according to claim 4, it is characterized in that it is the fine fack of 0.5~3mm that spacing is adopted in described filtration, to remove the bigger suspended substance of particle in the decontaminated water, protect the normal operation of follow-up equipment, and prevent the deposition of large granular impurity at face; Described neutralization reaction adopts the vitriol oil to regulate wastewater pH to 6-9.
6. printing-dying wastewater recycling treatment process according to claim 1 is characterized in that the described form that is arranged in the membrane module in the membrane bioreactor pond is hollow fiber film assembly or plate film assembly, preferred plate film assembly.
7. according to claim 1 or 6 described printing-dying wastewater recycling treatment process, the membrane material that it is characterized in that described membrane module is a polyvinylidene difluoride (PVDF), and its membrane pore size is 0.04~0.40 μ m, preferred 0.08 μ m~0.40 μ m.
8. printing-dying wastewater recycling treatment process according to claim 1 is characterized in that the sludge concentration in described MBR pond remains on 5~18g/L, and the quantity of reflux that is back to the mud mixed liquid in aerobe pond is 150~300% of a membrane filtration aquifer yield.
9. printing-dying wastewater recycling treatment process according to claim 1, it is characterized in that the described membrane module below that is arranged in the membrane bioreactor pond is provided with aerator, the upstream that aeration produces washes away the film surface, prevents deposition and the absorption of mud granule on the film surface.
10. printing-dying wastewater recycling treatment process according to claim 1 is characterized in that described reverse osmosis system adopts antipollution RO film, and material is a polymeric amide, and its diaphragm is electric neutrality.
CN200910026670XA 2009-05-08 2009-05-08 Printing-dying wastewater recycling treatment process Pending CN101880103A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103159381A (en) * 2013-04-11 2013-06-19 杭州天创环境科技股份有限公司 Fine chemical wastewater treatment and reuse method
CN104829049A (en) * 2015-04-21 2015-08-12 南通大恒环境工程有限公司 Reusing treatment method for printing and dyeing wastewater
CN104891743A (en) * 2015-06-10 2015-09-09 上海丰信环保科技有限公司 Advanced treatment and recycling technology of printing and dyeing wastewater
CN105036283A (en) * 2015-08-17 2015-11-11 吴江福爱梁纺织有限公司 Fabric dyeing wastewater sulfuric acid neutralization plant
CN105417896A (en) * 2016-01-07 2016-03-23 嘉兴瑞奕环保科技有限公司 Printing and dyeing wastewater treatment system
CN106630396A (en) * 2016-11-23 2017-05-10 武汉轻工大学 Simple process for treating wastewater containing various dyes
CN110563275A (en) * 2019-09-25 2019-12-13 河北省环境科学研究院 Method for reducing biological toxicity of coking wastewater

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103159381A (en) * 2013-04-11 2013-06-19 杭州天创环境科技股份有限公司 Fine chemical wastewater treatment and reuse method
CN104829049A (en) * 2015-04-21 2015-08-12 南通大恒环境工程有限公司 Reusing treatment method for printing and dyeing wastewater
CN104891743A (en) * 2015-06-10 2015-09-09 上海丰信环保科技有限公司 Advanced treatment and recycling technology of printing and dyeing wastewater
CN105036283A (en) * 2015-08-17 2015-11-11 吴江福爱梁纺织有限公司 Fabric dyeing wastewater sulfuric acid neutralization plant
CN105036283B (en) * 2015-08-17 2017-03-15 吴江福爱梁纺织有限公司 A kind of fabric printing waste water sulphur acid neutralizing unit
CN105417896A (en) * 2016-01-07 2016-03-23 嘉兴瑞奕环保科技有限公司 Printing and dyeing wastewater treatment system
CN106630396A (en) * 2016-11-23 2017-05-10 武汉轻工大学 Simple process for treating wastewater containing various dyes
CN110563275A (en) * 2019-09-25 2019-12-13 河北省环境科学研究院 Method for reducing biological toxicity of coking wastewater

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