CN201923914U - Printing and dyeing wastewater recycling device based on electrolysis and laminating technologies - Google Patents
Printing and dyeing wastewater recycling device based on electrolysis and laminating technologies Download PDFInfo
- Publication number
- CN201923914U CN201923914U CN2010206906572U CN201020690657U CN201923914U CN 201923914 U CN201923914 U CN 201923914U CN 2010206906572 U CN2010206906572 U CN 2010206906572U CN 201020690657 U CN201020690657 U CN 201020690657U CN 201923914 U CN201923914 U CN 201923914U
- Authority
- CN
- China
- Prior art keywords
- stopping valve
- outlet
- dyeing
- printing
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model relates to a printing and dyeing wastewater treatment and recycling device, in particular to a printing and dyeing wastewater recycling device based on the electrolysis and laminating technologies, which is based on the combination of the nano-catalytic electrolysis technology, the laminating technology and the traditional printing and dyeing wastewater treatment technology, has the advantages of lower cost and higher efficiency, and can regenerate and recycle printing and dyeing wastewater in a secondary sedimentation pond after biochemical treatment. The device is provided with a nano-catalytic electrolysis system, an immersed ultrafiltration membrane filtering separation system, an ultrafiltration membrane cleaning system, a reverse osmosis (RO) membrane filtering separation system, an RO membrane filtering recycling system and an RO membrane cleaning and regeneration system. When the device is used, printing and dyeing wastewater is collected through a water supply pump and then input into a nano-catalytic electrolysis machine, the water after nano-catalytic electrolysis directly flows into a sedimentation tank, and chlorine, solid impurities, planktons, bacteria and colloid generated by nano-catalytic electrolysis are removed from the wastewater through the immersed ultrafiltration membrane system after sedimentation, so that purified wastewater can be achieved.
Description
Technical field
The utility model relates to a kind of treatment of dyeing wastewater and recycle equipment, particularly relates to a kind of based on nano-catalytic electrolysis tech and the integrated printing and dyeing advanced treatment wastewater treatment recycle device of compound film technology.
Background technology
Textile industry generally includes 5 big integral parts such as weaving, printing and dyeing, chemical fibre, the manufacturing of clothing and textile specific equipment.Along with fast development of national economy, dyeing industry has also entered high-speed development period, and equipment and state of the art obviously promote, production technique and equipment are brought in constant renewal in and are regenerated, the printing and dyeing enterprise development is very rapid, and up to the present, only just there are the above printing and dyeing enterprise of scale more than 2000 families in China.Dyeing and printing process refers in process of production all kinds of textile materials fibers, yarn, fabric be carried out physics and chemically treated general name, comprises pre-treatment, dyeing, stamp and back arrangement process to textile materials, is referred to as dyeing and printing process.Current, the development of textile technology is guiding to produce ecological textile and green manufacture technology, set about by all kinds of means from technology, auxiliary agent, equipment etc., catch the source, pay attention to the ecological problem of each link in the production process, make great efforts to optimize textile technology, reduce the consumption of chemical agent, water, the energy, with reach efficiently, at a high speed, the purpose of environmental protection.Dropped into big strength exploitation environmental protection type dye auxiliary agent both at home and abroad, water saving, energy-conservation, reduce discharging novel process and new installation, aspect anhydrous and few watermark dyeing technique, all there is bigger development aspects such as coating dye printing aspect and energy-conservation, the utility model of the economizing on water technology of weaving.Although the water saving of textile printing and dyeing industry and wastewater processing technology are rapidly developed, but, textile printing and dyeing wastewater remains one of major polluting sources in China's industrial system, according to State Environmental Protection Administration's statistics, the dyeing waste water total amount of dyeing discharging is positioned at the 5th of each industrial sector total emission volumn of the whole nation.Dyeing waste water at first is that contamination level is big as the characteristics of the important source of pollution of environment, at present, world's printing and dyeing annual production is about 80～900,000 tons, China printing and dyeing annual production reaches 150,000 tons, occupies prostatitis, the world, has 10%～15% printing and dyeing component to enter environment with waste water approximately in the production of printing and dyeing with in using.The printing and dyeing industry and the textile printing and dyeing industry prosperity of China, dyeing waste water is even more serious to the pollution of environment, whole industry water displacement 13.6 billion cubic meters in 2004, its gross contamination emission then is positioned at six of each Department of Industry's family status in COD.The secondth, as many, the complex structure of printing and dyeing kind of environmental pollutant.The synthetic printing and dyeing that the whole world is used reach kind more than 30,000, and the printing and dyeing more than 80% are the complex organic compound that contains azo bond, poly aromatic nucleus.Printing and dyeing industry is one of extremely serious industry of environmental pollution in the chemical industry, and dyeing waste water colourity is big; The organic concentration height, the component complexity; Recalcitrant substance is many; Contain a large amount of inorganic salt, sulfide etc., belong to unmanageable trade effluent.Remove because the printing and dyeing molecule has complicated aromatic hydrocarbon molecular structure and is difficult to more, this is in water surrounding or in illumination with stable existence under the condition of oxygenant is arranged when manufacturing and designing for these structures.The 3rd is that most printing and dyeing are poisonous hardly degraded organic substance, and chemical stability is strong, has carcinogenic, teratogenesis and mutagenic " three cause " effect.Even printing and dyeing component concentration remaining in the waste water is very low, enters water body and also can cause the water body transmittance to reduce the destruction that causes water ecosystem.Therefore, dyeing waste water effectively is treated as important problem.
The water quality of dyeing waste water have Pollutant levels height, kind many, contain characteristics such as poisonous objectionable constituent and colourity height, at present both at home and abroad in this class wastewater treatment treatment process commonly used mainly contain multiple treatment technologies such as physics method, chemical method, biological process.
1. physics method
Mainly comprise methods such as adsorbed gas float glass process, membrane separation process, supersonic gas vibrating method, distillation method.What application was maximum in physical treatment process is absorption method.At present, the external main active carbon adsorption that adopts, this method is very effective to dissolved organic matter in the removal water, but it can not remove colloid and hydrophobicity printing and dyeing in the water, and water-soluble printing and dyeing such as positively charged ion printing and dyeing, direct printing, acid printing and dyeing, active printing and dyeing are had absorption property preferably.The adsorbed gas float glass process is exactly at first with the powdery inorganic adsorbent of some high dispersing such as printing and dyeing ion and other soluble substances in the absorption waste water such as wilkinite, kaolin, add gas floatation agent then, change it into hydrophobic particle, remove by air supporting, clearances such as acidity printing and dyeing, positively charged ion printing and dyeing and direct printing are reached more than 92%.
The membrane technique that is applied to treatment of dyeing wastewater mainly contains ultra-filtration and reverse osmosis.The ultra-filtration technical finesse contains and disperses the decolorizing printing and dyeing waste water rate is 80%～97%, and the TOC clearance is 60%～85%.The clearance of reverse osmosis method dissolved solids reaches 85%～99%, and the printing and dyeing average recovery rate is 75%～85%.
Can make ultrasonic technology become the effective ways of wastewater treatment by control frequency of ultrasonic and saturated gas.Nine divisions of China in remote antiquity, Zhangjagang City fine chemistry industry station-service is according to the FBZ sewage treatment equipment treatment of dyeing and printing of supersonic gas vibrating technical project, and the colourity average removal rate is 97%, COD
CrClearance is 90.6%, and gross contamination load reduction rate is 85.9%.
2. chemical method
Chemical method mainly comprises methods such as chemical coagulation process, chemical oxidization method, photochemical catalysis oxidation style, electrochemical process.Chemical coagulation process is the common method of treatment of dyeing and printing, once is considered to one of effective, the most most economical decolouring technology.Chemical oxidization method is one of main method of decolorizing printing and dyeing waste water, is to utilize the various oxidation means chromophoric group of will printing and dyeing to destroy and decolour.Press the different of oxygenant and oxidizing condition, chemical oxidization method can be divided into ozone oxidation method, deep oxidation method.In addition, photochemical catalysis oxidation style developed rapidly in recent years as a kind of deep oxidation technology of degradation of organic substances.Zhang Guilan (Zhang Guilan, the degraded of dye wastewater in open rotation photo catalysis reactor, textile journal, 2005,263:109-111) make the dyeing waste water of degrading in this way obtain good decolorizing effect.Electrochemical process is by electrode reaction dyeing waste water to be purified.Micro-electrolysis method is to utilize iron-carbon filling material to corrode in electrolyte solution to form the electrochemical techniques that countless small galvanic cells are handled waste water, and it is that multiple physics chemical action such as a kind of current collection is separated, coagulation, electricity flocculation, absorption are in the method for wastewater treatment of one.In treatment process of dyeing and printing, the printing and dyeing molecule is adsorbed to carbon surface earlier, and oxidation or reduction reaction take place at the two poles of the earth then.Also can utilize electrode to carry out electrolysis.Jia Jin equality (Jia Jinping, Shen Zhemin, Wang Wenhua, the present situation of waste water containing dye treatment process and progress, 2000,191:26-29) utilize the over-all propertieies such as conduction, absorption, catalysis, redox and air supporting of electrode to realize absorption-electrode reaction-flocculation desorption one continuous line technology with activated carbon fiber as electrode, percent of decolourization reaches 98%, COD
CrClearance is greater than 80%.(Yan Bin, Fu Haiyan, bavin sky such as Yan Bin, Deng. the applied research of little electrolysis in treatment of dyeing and printing, Xiamen University of Technology's journal, 2008,16 (1): 18-22) studied decolouring and the COD of the micro electrolysis tech of iron carbon dioxide process carbon electrode to the waste water of cotton series and chemical fibre blended woven fabric deposits yields
CrRemoving effect, is 2: 1 at iron carbon mass ratio, and when HRT was 1.5h, the COD clearance was up to 55%, and chroma removal rate is 95%, and BOD/COD brings up to about 0.5 from 0.3; Luo Jingsheng such as Luo Jingsheng, Ceng Kangmei, left-handed crystal honor, Deng. water technology, 2005,31 (11): 67-70 utilizes the circulation Fe-C Micro Electrolysis Method to study containing factory effluents such as dyestuff, dyestuff intermediate and auxiliary agent, and the result proves: former water pH is very big to the treatment effect influence.PH is in 1～5 scope, and pH reduction process effect more is good more, pH be 1 o'clock COD clearance about 60%, chroma removal rate is more than 94%; Deng Xihong etc. (Deng Xihong, Wang Chao. environmental science and management, 2008,33 (3): 120-122), meta-alkalescence big to pollutant load height, fluctuation of concentration amplitude, colourity height, difficult biochemical dyeing waste water adopt little electrolysis+materialization+biochemical treatment, this technology is moved 3 months continuously, the result shows that this technology is stable, less investment, processing cost low (processing costs per ton is about 0.765 yuan), the clearance of COD, BOD, SS and colourity respectively 94%, 96%, 89%, more than 96%, the every index of effluent quality all reaches emission standard; EpolitoW illiamJ, HanbaeYang etc. adopt micro-electrolysis method to study RB4 (Reactive Blue4) waste water, and experimental result shows, and percent of decolourization improves gradually along with the increase of the reduction of pH and stirring intensity, experimental temperature and ionic strength.Also have other many employing electrochemical processes to handle the report that contains dyeing waste water simultaneously.
3. biochemical process
The dyeing waste water biodegradability is poor, if want to adopt biochemical process to handle, and then can be by improving active sludge MLSS and improving the sludge activity biochemical property or select for use high-efficiency strain to improve biochemical effect.Wherein seed selection and the good decolouring flora of cultivation are important development directions of biochemical process.Carry out utilizing technology such as selection by mutation, protoplastis fusion, genetically engineered abroad, set up the research of the efficient printing and dyeing decolouring engineering bacteria that has a plurality of plasmids.Studies show that in recent years, dominant bacterias such as false single-cell bacteria, sphaerotilus natans bacterium, Arthrobacter, withered grass bacterium, oxidation yeast have suitable effect to the printing and dyeing degraded.
In recent years, comparatively fast developed with chemical method and physics method bonded treatment method of printing and dying wastewater or with the treatment method of printing and dying wastewater of biochemical treatment and physics.Chinese patent ZL 200710008643.0 discloses a kind of treatment method of printing and dying wastewater based on membrane technique, and it is the treatment method of printing and dying wastewater that chemical flocculation precipitation, biochemical treatment and reverse osmosis isolation technology are combined.Chinese patent ZL 200910112879.8 discloses a kind of printing and dyeing advanced treatment waste water plant and method, with dyeing waste water after biochemical treatment, the waste water of second pond is through the little electrolysis of nano-catalytic and through reverse osmosis membrane filtration, dialyzate cyclic utilization method, the mainly less situation of COD of the waste water of suitable second pond., used and still have certain limitation greater than 300 o'clock for the COD of the waste water of second pond.
Though above-mentioned the whole bag of tricks all has good treatment effect, also there is following problem.
Aspect materialization, though gac has the characteristics of advantages of good adsorption effect, the regeneration of activated carbon difficulty, the cost height is restricted its application.The sorbent material that many enterprises turn to other low prices, material to be easy to get respectively.Though electrolytic process, oxidation style have certain effect in the colourity of removing dyeing waste water, often the COD removal is unsatisfactory, and the cost of handling medicament is also higher relatively, and many novel oxidation means also are in experimental study stage, not industrialization.
Aspect biochemical, printing and dyeing are typical fine chemical products, have short run, the characteristics of many kinds, its complex structure, Production Flow Chart is long, expects that from former finished product often is attended by unit operations such as nitrated, condensation, reduction, oxidation, diazotization, coupling, and byproduct is many, product yield is low, process operations such as wastewater through organic matter complicated component, printing and dyeing are produced chemical reaction process and separated, make with extra care, washing all are to be solvent with water, and water consumption is very big.Though the biochemical process treatment of dyeing and printing has the advantage of less investment, have still that microorganism is difficult to adapt to shortcomings such as dyeing waste water, variation water quality is big, toxicity is big, and exist the biogas of sludge disposal, anaerobism section to handle and problem such as complex management.In addition, though adopt the little electrolysis process of iron carbon as electrode, make progress aspect treatment of dyeing and printing, the iron carbon consumption brings a large amount of precipitations, makes the waste water after the processing be difficult to utilize, and can only reach emission standard.
Treatment of dyeing wastewater adopts single treatment process often to be difficult to get a desired effect.Conventional method is that each treatment process is made up, and has defectives such as technical process is long, running cost is high, effluent characteristics instability, and the sewage after the processing is nearly to 2 grades of emission standards.Because this waste discharge has passed through several different methods such as biochemistry, chemistry, materialization respectively and has handled, physico-chemical property is very stable, follow-up decolorizing purification is difficulty very, general method all is difficult to it is carried out further decolorizing purification, and this discharging that reaches the advanced treatment waste water of 2 grades of dischargings also will cause secular influence to environment.On the other hand, current Freshwater resources are more and more nervous, water supply contradiction becomes increasingly conspicuous, printing and dyeing advanced treatment waste water if can be carried out recycle, not only significantly alleviated influence, and saved a large amount of Freshwater resources and reduced the water consumption index and the discharge of wastewater index of printing and dyeing enterprise significantly environment.
Summary of the invention
Problems such as that the purpose of this utility model is is big at existing wastewater discharge in the existing treatment method of printing and dying wastewater, the recycle cost is higher, usefulness is lower and waste water resource is serious, providing a kind of combines with dyeing waste water conventional process technology based on nano-catalytic electrolysis tech, compound film technology, cost is lower, usefulness is higher, with the dyeing waste water recycle device based on electrolysis and compound film technology of dyeing waste water through the utilization of the second pond waste water reclamation recirculation after the biochemical treatment.
The utility model is provided with:
The nano-catalytic electrolytic system: the nano-catalytic electrolytic system is used for treatment steps such as nano-catalytic electrolysis, precipitation, and the nano-catalytic electrolytic system is provided with stopping valve, working shaft, nano-catalytic electrolysis machine and setting tank; The external dyeing waste water relief outlet of the import of stopping valve, the import of working shaft connects the outlet of stopping valve, the water supply pump outlet is admitted the import of rice catalytic electrolysis machine, the outlet of nano-catalytic electrolysis machine connects the import of setting tank, and the outlet of setting tank connects with submerged ultrafiltration filtering separation system through stopping valve.
Submerged ultrafiltration filtering separation system: submerged ultrafiltration filtering separation system is used for the nano-catalytic electrolytic system gained printing and dyeing filtration of purifying liquid waste, separate dialyzate (water) and concentrated solution, submerged ultrafiltration filtering separation system is provided with stopping valve, the submerged ultrafiltration pond, gas blower, aerator, ultrafiltration membrane system, suction pump and dialyzate (water) basin, the printing and dyeing of nano-catalytic electrolytic system gained are purified liquid waste and are entered the submerged ultrafiltration pond by water inlet pipe and stopping valve, ultra-filtration membrane is immersed in during printing and dyeing in the submerged ultrafiltration pond purify liquid waste, suction pump is crossed membranous wall from the ultra-filtration membrane inboard with the water negative pressure-pumping, the dialyzate (water) that produces is collected dialyzate (water) basin by suction pump and is used for further getting the reuse water of recycle through osmosis filtration, the outlet of rice catalytic electrolysis system setting tank is admitted in the import of stopping valve, the outlet of stopping valve connects the import in submerged ultrafiltration pond, and suction pump is passed through in the outlet in submerged ultrafiltration pond successively, stopping valve enters dialyzate (water) basin.
The ultra-filtration membrane cleaning system: the ultra-filtration membrane cleaning system is used to clean the ultrafiltration membrance filter separation system, the ultra-filtration membrane cleaning system is provided with cleaning fluid tank, backwashing pump, stopping valve and duct coupling, the outlet of cleaning fluid tank connects the import of backwashing pump, the back flushing pump outlet connects the import of stopping valve, and the outlet of stopping valve connects ultrafiltration membrane system.
The reverse osmosis membrane filtration separation system: the reverse osmosis membrane filtration separation system be used for ultrafiltration membrane system filter gained printing and dyeing purify liquid waste filtration, separate dialyzate (water) and concentrated solution.The reverse osmosis membrane filtration separation system is provided with stopping valve, film system water supply pump, security personnel's strainer, film system high pressure pump, osmosis filtration film system and dialyzate (water) basin.The reverse osmosis membrane filtration separation system is purified liquid waste ultrafiltration gained printing and dyeing and pump into the reverse osmosis membrane filtration separation system with high-pressure pump after security personnel is filtered, through reverse osmosis membrane filtration separate dialyzate (water) and concentrated solution, dialyzate (water) enters basin and gets reuse water; A concentrated solution part is separated through the reflux membrane filtration that circulates of concentrated solution topping-up pump, and a part refluxes and enters the nano-catalytic electrowinning process and recycle the redundance discharging.The import of stopping valve connects the outlet of purifying liquid waste of submerged ultrafiltration filtering separation system dialyzate (water) basin, the outlet of stopping valve enters osmosis filtration film system through film system water supply pump, stopping valve, security personnel's strainer and film system high pressure pump successively, and dialyzate (water) outlet of osmosis filtration film system connects the import of dialyzate (water) basin through stopping valve.
The reverse osmosis membrane filtration recovery of circulatory system: the reverse osmosis membrane filtration recovery of circulatory system is the system that is used for the reverse osmosis membrane filtration concentrated solution is carried out reuse, is provided with backflow concentrated solution topping-up pump, stopping valve.The concentrated solution outlet one tunnel of osmosis filtration film system refluxes and takes back stream concentrated solution topping-up pump inlet, pumps into the reverse osmosis membrane filtration separation system; The recycling of rice catalytic electrolysis jar is admitted through valve return in another road of concentrated solution outlet of osmosis filtration film system.
Reverse osmosis membrane cleaning and regeneration system: reverse osmosis membrane cleaning and regeneration system is used to clean the reverse osmosis membrane filtration separation system, and reverse osmosis membrane cleaning and regeneration system is provided with cleaning fluid tank, backwashing pump, stopping valve and duct coupling.The import of cleaning fluid tank connects the condensed water outlet of osmosis filtration film system through stopping valve, one way outlet of cleaning fluid tank connects the condensed water outlet of osmosis filtration film system through stopping valve, another way outlet of cleaning fluid tank is behind stopping valve, and one the tunnel connects film system water supply pump discharge through backwashing pump and stopping valve.
Using the utility model to carry out the dyeing waste water cyclic utilization method may further comprise the steps:
With dyeing waste water after working shaft extracts, in the input nano-catalytic electrolysis machine, the nano-catalytic brine electrolysis directly enters setting tank, post precipitation is removed the chlorine and solid impurity, planktonic organism, bacterium, the colloid that produce because of the nano-catalytic electrolysis in the waste water through the submergence ultrafiltration membrane system and must be purified liquid waste, and measuring its SDI should be less than 5.
The operating voltage of described nano-catalytic electrolysis two neighboring pole is 2～18V, and optimum voltage is 3～8V, and current density is 10～300mA/cm
2, optimum current density is 50～210mA/cm
2, the printing and dyeing advanced treatment waste water of sodium chloride-containing flows in the setting tank through chlorine [Cl] back that the nano-catalytic electrolysis produces status nascendi.Adopt the nano-catalytic electrolysis to have following outstanding effect: (1) kills microorganism in the waste water with the chlorine [Cl] of the status nascendi that the nano-catalytic electrolysis produces, make in the waste water microorganism live body drop to 30/below the ml, the elimination microorganism is to the pollution of mould material.(2) organism in the oxygenolysis waste water, the quick chain rupture of residual dye, decomposition decolouring and reduction COD
Cr, passed through the darker in addition color of the advanced treatment waste water after several different methods such as biochemistry, chemistry, materialization are handled and higher COD
Cr, general chemical treatment method is difficult to further decolouring and reduces COD
Cr, under physical environment, even, also can not fade through tens of days.Adopt the nano-catalytic electrolysis that advanced treatment waste water is handled, can in 2～5 minutes, make waste water decoloring and reduce COD significantly
Cr(3) suspended substance, colloid, charged corpuscle in the waste water are taken off surely under electric field action, after cohesion forms larger particles, make purification of waste water through follow-up submerged ultrafiltration filtering separation system filtration removal.(4) heavy metal ion in the waste water moves to the negative electrode of little electrolytic cell, forms precipitation at negative electrode, thereby reduces the heavy metal ion content in the waste water.(5) ammonia nitrogen in the oxygenolysis waste water reduces ammonia nitrogen index in the waste water.
The sodium chloride content of described dyeing waste water can be 0.6%～5.0%., be preferably 0.06%～0.13%, can add industrial sodium-chlor when sodium chloride content is not enough and be supplemented to 0.6%～5.0%.
Solid impurity in the waste water, planktonic organism, bacterium, colloid etc. can be removed by described submerged ultrafiltration filtering separation system, and submerged membrane adopts the open filter design of external pressure, can directly be immersed in the waste water, so the floor space of system is little.Its working conditions is: normal temperature～45 ℃, operating pressure is 3～50kPa.
Described membrane filtration separation system is a kind of in reverse osmosis membrane filtration separation system, the nanofiltration membrane filtering separation system etc.
The reverse osmosis membrane of described reverse osmosis membrane filtration system is for to the sodium-chlor rejection being 98% reverse osmosis membrane, and the structure of membrane module is rolled membrane module or tubular membrane component, and its working conditions is: normal temperature～45 ℃, operating pressure is 7～35kPa.
The nanofiltration membrane of described nanofiltration membrane filtering separation system is for to the magnesium sulfate rejection rate being 98% nanofiltration membrane, and membrane module is rolled membrane module or tubular membrane component, and its working conditions is: normal temperature～45 ℃, operating pressure is 3～20kPa.
The utility model compares with membrane filtration separating treatment or adsorption treatment method with single, both overcome the too high defective of its cost, it is undesirable to have overcome water treatment effect again, the discharging the contaminated wastewater environment and defective, and can change the rotten manner that is, the change refuse is resource, with existing printing and dyeing advanced treatment wastewater and reclaiming recycle, has following outstanding advantage:
1, the rate of recovery of the rate of recovery height of water, the low water of cost is up to 60%～80%, and waste discharge is few, and energy consumption is low, and working cost is lower than the cost of the biochemical terminal blooming filtration treatment technology of tradition, and ton water (reuse water) cost is far below existing water price from the beginning;
2, the coloring matter in the rapid oxygenolysis waste water of good decolorizing effect, good decolorizing effect.As: the second pond chroma in waste water is 200 o'clock, and after the nano-catalytic electrolysis machine was handled, colourity was less than 32;
3, the traditional biochemical end of total release that reduces waste water COD significantly adds membrane filtration technique, though can realize water reuse in the part, but can not reduce the total release of waste water COD, the utility model is the organism in the oxygenolysis waste water rapidly, reduces the total release of waste water COD significantly;
4, the biological pollution of eradicating film can be killed the bacterium in the waste water, and the biological pollution of eradicating film reduces the wash number of film significantly, reduces film cleaning regeneration cost, improves the service efficiency of film, prolongs the work-ing life of film, reduces the film replacement cost;
5, there is not secondary pollution to adopt the nano-catalytic electrolysis tech that the technology of second pond wastewater treatment is substituted the materialization treatment process, need not add chemical substances such as flocculation agent, discoloring agent and gas floatation agent, not only save cost, and save material consumption and do not produce secondary pollution;
When 6, reducing mud employing the utility model processing waste water significantly, adopt nano-catalytic electrolysis tech surrogate metallization processes after the second pond water outlet, need not add chemical substances such as flocculation agent, discoloring agent, mud has only 1/2nd of conventional art;
7, take up an area of few technological process of production weak point, compact equipment is taken up an area of few;
8, the high reprocessing cycle water colorless of reuse water quality, tasteless, water quality is far above GB/T19923-2005 " municipal effluent reclaimed wastewater reuse process water water quality " standard.
The utility model and nano-catalytic electrolysis+membrane filtration method for separating and processing relatively, the wideer nano-catalytic electrolysis of the COD scope+membrane filtration method for separating and processing that is suitable for waste water is handled when printing and dyeing advanced treatment waste water, the COD of its second pond waste water should be less than 300mg/L, when surpassing 300mg/L for COD, may occur unusual, when the utility model was handled printing and dyeing advanced treatment waste water, the COD of its second pond waste water got final product less than 500mg/L.
Description of drawings
Fig. 1 is that the structure of the utility model embodiment is formed synoptic diagram.
Embodiment
The utility model be after the comparative study of composition, character and the existing processing scheme of existing advanced treatment of dyeing wastewater being goed deep into system, finish to the purification of advanced treatment of dyeing wastewater and the design of utilization process, it reaches middle water reusing method by the combination utilization of methods such as nano-catalytic electrolysis, precipitation, submerged ultrafiltration filtration, reverse osmosis membrane filtration thereby form a kind of purification that is particularly suitable for advanced treatment of dyeing wastewater.
Following embodiment will be further described the utility model in conjunction with the accompanying drawings.
Referring to Fig. 1, the utility model embodiment is provided with:
The nano-catalytic electrolytic system: the nano-catalytic electrolytic system is used for treatment steps such as nano-catalytic electrolysis, precipitation.The nano-catalytic electrolytic system is provided with stopping valve 11, working shaft 12, nano-catalytic electrolysis machine 13, setting tank 14; The external dyeing waste water of the import of stopping valve 11 (second pond) relief outlet, the import of working shaft 12 connects the outlet of stopping valve 11, and the import of rice catalytic electrolysis machine 13 is admitted in the outlet of working shaft 12, and the outlet of nano-catalytic electrolytic cell 13 connects the import of setting tank 14.
Submerged ultrafiltration filtering separation system: submerged ultrafiltration filtering separation system be used for nano-catalytic electrolytic system gained printing and dyeing purify liquid waste filtration, separate dialyzate (water) and concentrated solution.Submerged ultrafiltration filtering separation system is provided with stopping valve 21, ultrafiltration membrane system 22, gas blower 23, aerator 24, submerged ultrafiltration pond 25, suction pump 26, stopping valve 27 and dialyzate (water) basin 28; The outlet of rice catalytic electrolysis system setting tank 14 is admitted in the import of stopping valve 21, and the outlet of stopping valve 21 connects the import in submerged ultrafiltration pond 25, and the outlet in submerged ultrafiltration pond 25 enters dialyzate (water) basin 28 through water pump 26, stopping valve 27 successively.
The ultra-filtration membrane cleaning system: the ultra-filtration membrane cleaning system is used to clean the ultrafiltration membrance filter separation system, is provided with cleaning fluid tank 31, backwashing pump 32, stopping valve 33.The outlet of cleaning fluid tank 31 connects the import of backwashing pump 32, and the outlet of backwashing pump 32 connects the import of stopping valve 33, and the outlet of stopping valve 33 connects ultrafiltration membrane system 22.
The reverse osmosis membrane filtration separation system: the reverse osmosis membrane filtration separation system be used for ultrafiltration membrane system filter gained printing and dyeing purify liquid waste filtration, separate dialyzate (water) and concentrated solution.The reverse osmosis membrane filtration separation system is provided with stopping valve 41, film system water supply pump 42, stopping valve 43, security personnel's strainer 44, film system high pressure pump 45, osmosis filtration film system 46, stopping valve 47 and dialyzate (water) basin 48.The import of stopping valve 41 connects the outlet of purifying liquid waste of submerged ultrafiltration filtering separation system dialyzate (water) basin 28, the outlet of stopping valve 41 enters osmosis filtration film system 46 through film system water supply pump 42, stopping valve 43, security personnel's strainer 44 and film system high pressure pump 45 successively, and dialyzate (water) outlet of osmosis filtration film system 46 connects the import of dialyzate (water) basin 48 through stopping valve 47.
The reverse osmosis membrane filtration recovery of circulatory system: the reverse osmosis membrane filtration recovery of circulatory system is the system that is used for the reverse osmosis membrane filtration concentrated solution is carried out the reuse recycle.The reverse osmosis membrane filtration recovery system is provided with backflow concentrated solution topping-up pump 51, valve 52, stopping valve 53, valve 54.The import of backflow concentrated solution topping-up pump connects the concentrated solution outlet of osmosis filtration film system 46, and backflow concentrated solution supercharging pump outlet connects the import of osmosis filtration film system 46; Reflux through valve 52, stopping valve 53, valve 54 and admit 13 recyclings of rice catalytic electrolysis jar in another road of concentrated solution outlet of osmosis filtration film system.
Reverse osmosis membrane cleaning and regeneration system: reverse osmosis membrane cleaning and regeneration system is used to clean the reverse osmosis membrane filtration separation system, and reverse osmosis membrane cleaning and regeneration system is provided with stopping valve 61, cleaning fluid tank 62, stopping valve 63, stopping valve 64, backwashing pump 65, stopping valve 66.The import of cleaning fluid tank 62 connects osmosis filtration film system 46 dialyzates (water) outlet through stopping valve 61, one way outlet of cleaning fluid tank 62 connects the 46 condensed water outlet of osmosis filtration film system through stopping valve 63, valve 52, another way outlet of cleaning fluid tank 62 is behind stopping valve 64, and one the tunnel connects 42 outlets of film system water supply pump through backwashing pump 65 and stopping valve 66.
Below provide the embodiment that adopts the dyeing waste water recycle that the dyeing waste water recycle device based on electrolysis and compound film technology shown in Figure 1 carries out.
Embodiment 1
The purification and the middle water reusing method of 150 ton per days printing and dyeing advanced treatment waste water.
Index is as shown in table 1 after measured for described printing and dyeing advanced treatment waste water.
Table 1
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 430 | 5 | Saltiness | ‰ | 6.6 |
| 2 | SS | mg/L | 115 | 6 | pH | 8.1 | |
| 3 | Turbidity | NTU | 9 | 7 | Specific conductivity | μS/cm | 7350 |
| 4 | Colourity | 70 |
After 150 tons of printing and dyeing advanced treatment waste water are pressed the flow velocity extraction of 7.5T/h through working shaft 12, in the input nano-catalytic electrolytic cell 13, the nano-catalytic brine electrolysis directly enters setting tank 14, neutralization precipitation after solid impurity, planktonic organism, bacterium, colloid that ultrafiltration membrane system 22 is removed in anhydrating must purify liquid waste.
The electrolytic operating voltage of described nano-catalytic is 8～9V, strength of current is 500～510A, the chlorine [Cl] of the status nascendi that the little electrolysis of nano-catalytic produces is killed the organism in microorganism in the waste water, the oxygenolysis waste water, and after making suspended substance, colloid, charged corpuscle in the waste water under electric field action, form larger particles, system is removed through the submerged ultrafiltration filtering separation, make purification of waste water, measuring SDI is 1.9.
Through purifying liquid waste of nano-catalytic electrolysis cells and submerged ultrafiltration filtering separation system purification gained through behind the stopping valve 41, pump in the osmosis filtration film system 46 through film system water supply pump 42, stopping valve 43, security personnel's strainer 44 and high-pressure pump 45 successively and filter, dialyzate (water) is stored in dialyzate (water) basin 48 through threeway and stopping valve 47, and process threeway and stopping valve 61 are to 62 moisturizings of clear water basin.
The membrane module of described reverse osmosis membrane filtration system is for to the sodium-chlor rejection being 98% reverse osmosis rolled membrane module, and its working conditions is: 32～35 ℃, operating pressure is 9～12kPa, and membrane flux is 20mL/cm
2The flow velocity of concentrated solution and dialyzate is respectively 4.7T/h and 4.9T/h, the flow velocity that concentrated solution is pressed 1.4T/h uses through backflow concentrated solution topping-up pump 51 reflux cycle, flow velocity with 0.7T/h flows out through valve 52, stopping valve 53, and wherein, 0.7T/h passes back into recycling in the nano-catalytic electrolytic cell 13 through valve 54, the remaining 2.6T/h that presses discharges, the Wastewater Recovery rate is 65%, and the quality of reuse water is as shown in table 2, and the index that concentrates waste water is as shown in table 3.
Table 2
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 9 | 4 | Colourity | 1 | |
| 2 | SS | mg/L | Do not detect | 5 | pH | 6.7 | |
| 3 | Turbidity | NTU | 0.8 | 6 | Specific conductivity | μS/cm | 10 |
Table 3
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 136 | 5 | Saltiness | ‰ | 3.7 |
| 2 | SS | mg/L | 35 | 6 | pH | 8.5 | |
| 3 | Turbidity | NTU | 2 | 7 | Specific conductivity | μS/cm | 9100 |
| 4 | Colourity | 30 |
Embodiment 2
The purification and the middle water reusing method of 3000 ton per days printing and dyeing advanced treatment waste water.
Print and dye the after measured index of advanced treatment of dyeing wastewater of described printing and dyeing advanced treatment waste water is as shown in table 4:
Table 4
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 156 | 5 | Saltiness | ‰ | 3.1 |
| 2 | SS | mg/L | 60 | 6 | pH | 8.3 | |
| 3 | Turbidity | NTU | 8 | 7 | Specific conductivity | μS/cm | 7100 |
| 4 | Colourity | 200 |
Printing and dyeing advanced treatment waste water is after working shaft 12 is pressed the extraction of 150T/h flow velocity, in the input nano-catalytic electrolytic cell 13, the nano-catalytic brine electrolysis directly enters setting tank 14, neutralization precipitation after solid impurity, planktonic organism, bacterium, colloid that ultrafiltration membrane system 22 is removed in anhydrating must purify liquid waste.
Described printing and dyeing advanced treatment waste water is because saltiness is lower, add industrial sodium-chlor earlier its saltiness is adjusted to 12.5 ‰, and then carry out the nano-catalytic electrolysis, the electrolytic operating voltage of nano-catalytic is 5～6V, strength of current is 1560～1580A, the chlorine [Cl] of the status nascendi that the nano-catalytic electrolysis produces is killed the organism in microorganism in the waste water, the oxygenolysis waste water, and after making suspended substance, colloid, charged corpuscle in the waste water under electric field action, form larger particles, removal is purified liquid waste water through submerged ultrafiltration filtering separation system, and measuring SDI is 1.6.
Through purifying liquid waste of nano-catalytic electrolysis cells and submerged ultrafiltration filtering separation purification unit gained through behind the stopping valve 41, successively through film system water supply pump 42, stopping valve 43, security personnel's strainer 44 and film system high pressure pump 45 pump into filter in the nanofiltration filtering membrane system 46 concentrated solution and dialyzate.The flow velocity of concentrated solution and dialyzate is respectively 73.5T/h and 127.5T/h.Dialyzate is stored in dialyzate (water) basin 48 through threeway and stopping valve 47 with the flow velocity of 127.5T/h, and process threeway and stopping valve 61 are to 62 moisturizings of clear water basin; The flow velocity that concentrated solution is pressed 26T/h uses through backflow concentrated solution topping-up pump 51 reflux cycle, passes back into recycling in the nano-catalytic electrolytic cell 13 with the flow velocity of 25.0T/h through valve 52, stopping valve 53, valve 54, and the remaining 22.5T/h that press discharges.The Wastewater Recovery rate is 85%, and the quality of reuse water is as shown in table 5, and the index that concentrates waste water is as shown in table 6.
The nanofiltration membrane component of described nanofiltration filtering membrane system is for to the magnesium sulfate rejection rate being 98% nanofiltration rolled film film group, and its working conditions is: 20～25 ℃, operating pressure is 6.5～8.0kPa, and membrane flux is 26ml/cm
2
Table 5
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 10 | 4 | Colourity | 3 | |
| 2 | SS | mg/L | Do not detect | 5 | pH | 7.7 | |
| 3 | Turbidity | NTU | 1 | 6 | Hardness | mmol/l | 1.7 |
Table 6
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 75 | 4 | Saltiness | ‰ | 11.5 |
| 2 | SS | mg/L | 50 | 5 | pH | 8.2 |
| 3 | Turbidity | NTU | 2.6 | 6 | Specific conductivity | μS/cm | 11200 |
Embodiment 3
The purification and the middle water reusing method of 6000 ton per days printing and dyeing advanced treatment waste water.
The purification of described printing and dyeing advanced treatment waste water and middle water recycling device, the index of the advanced treatment of dyeing wastewater of printing and dyeing after measured is as shown in table 7.
Table 7
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 391 | 4 | Saltiness | ‰ | 0.9 |
| 2 | SS | mg/L | 190 | 5 | pH | 7.7 | |
| 3 | Turbidity | NTU | 8.4 | 6 | Specific conductivity | μS/cm | 8100 |
Printing and dyeing advanced treatment waste water is after working shaft 12 is pressed the extraction of 300T/h flow velocity, in the input nano-catalytic electrolytic cell 13, the nano-catalytic brine electrolysis directly enters setting tank 14, and post precipitation must be purified liquid waste through solid impurity, planktonic organism, bacterium, colloid that submerged ultrafiltration system 22 removes in anhydrating.
Described printing and dyeing advanced treatment waste water saltiness is lower, and the electrolytic operating voltage of nano-catalytic is 16～18V, and strength of current is 3760～3800A.The chlorine [Cl] of the status nascendi that the nano-catalytic electrolysis produces is killed the organism in microorganism in the waste water, the oxygenolysis waste water, and after making suspended substance, colloid, charged corpuscle in the waste water under electric field action, form larger particles, removal is purified liquid waste water through submerged ultrafiltration filtering separation system, and measuring SDI is 3.1.
Through purifying liquid waste of nano-catalytic electrolysis cells and submerged ultrafiltration filtering separation purification unit gained through behind the stopping valve 41, successively through film system water supply pump 42, stopping valve 43, security personnel's strainer 44 and film system high pressure pump 45 pump into filter in the reverse osmosis membrane system 46 concentrated solution and dialyzate.Dialyzate is stored in dialyzate (water) basin 48 through threeway and stopping valve 47 with the flow velocity of 195T/h, and process threeway and stopping valve 61 are to 62 moisturizings of clear water basin; The flow velocity that concentrated solution is pressed 90T/h uses through backflow concentrated solution topping-up pump 51 reflux cycle, passes back into recycling in the nano-catalytic electrolytic cell 13 with the flow velocity of 100T/h through valve 52, stopping valve 53, valve 54, and the remaining 105T/h that press discharges.
Described reverse osmosis membrane filtration system is for to the sodium-chlor rejection being 98% reverse osmosis rolled film film group, and its working conditions is: 18～21 ℃, operating pressure is 15～17kPa, and membrane flux is 20ml/cm
2, the Wastewater Recovery rate is 65%, and the quality of reuse water is as shown in table 8, and the index that concentrates waste water is as shown in table 9.
Table 8
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 8 | 4 | Colourity | 1 | |
| 2 | SS | mg/L | Do not detect | 5 | pH | 6.9 |
| 3 | Turbidity | NTU | 0.7 | 6 | Specific conductivity | μS/cm | 8 |
Table 9
| Sequence number | Project | Unit | Measured value | Sequence number | Project | Unit | Measured value |
| 1 | COD Cr | mg/L | 83 | 5 | Saltiness | ‰ | 2.7 |
| 2 | SS | mg/L | 55 | 6 | pH | 8.5 | |
| 3 | Turbidity | NTU | 3 | 7 | Specific conductivity | μS/cm | 6500 |
| 4 | Colourity | 30 |
Claims (1)
1. based on the dyeing waste water recycle device of electrolysis and compound film technology, it is characterized in that being provided with:
The nano-catalytic electrolytic system: the nano-catalytic electrolytic system is provided with stopping valve, working shaft, nano-catalytic electrolysis machine and setting tank; The external dyeing waste water relief outlet of the import of stopping valve, the import of working shaft connects the outlet of stopping valve, the water supply pump outlet is admitted the import of rice catalytic electrolysis machine, the outlet of nano-catalytic electrolysis machine connects the import of setting tank, and the outlet of setting tank connects with submerged ultrafiltration filtering separation system through stopping valve;
Submerged ultrafiltration filtering separation system: submerged ultrafiltration filtering separation system is provided with stopping valve, the submerged ultrafiltration pond, gas blower, aerator, ultrafiltration membrane system, suction pump and dialyzate basin, the printing and dyeing of nano-catalytic electrolytic system gained are purified liquid waste and are entered the submerged ultrafiltration pond by water inlet pipe and stopping valve, ultra-filtration membrane is immersed in during printing and dyeing in the submerged ultrafiltration pond purify liquid waste, suction pump is crossed membranous wall from the ultra-filtration membrane inboard with the water negative pressure-pumping, the dialyzate that produces is collected the dialyzate basin by suction pump and is used for further getting the reuse water of recycle through osmosis filtration, the outlet of rice catalytic electrolysis system setting tank is admitted in the import of stopping valve, the outlet of stopping valve connects the import in submerged ultrafiltration pond, and suction pump is passed through in the outlet in submerged ultrafiltration pond successively, stopping valve enters the dialyzate basin;
The ultra-filtration membrane cleaning system: the ultra-filtration membrane cleaning system is provided with cleaning fluid tank, backwashing pump, stopping valve and duct coupling, and the cleaning fluid tank outlet connects the backwashing pump import, and the backwashing pump outlet connects the stopping valve import, and the stopping valve outlet connects ultrafiltration membrane system;
The reverse osmosis membrane filtration separation system: the reverse osmosis membrane filtration separation system is provided with stopping valve, film system water supply pump, security personnel's strainer, film system high pressure pump, osmosis filtration film system and dialyzate basin, the reverse osmosis membrane filtration separation system is purified liquid waste the printing and dyeing of ultrafiltration gained and pump into the reverse osmosis membrane filtration separation system with high-pressure pump after security personnel is filtered, through reverse osmosis membrane filtration separate dialyzate and concentrated solution, dialyzate enters basin and gets reuse water; A concentrated solution part is separated through the reflux membrane filtration that circulates of concentrated solution topping-up pump, part backflow enters the nano-catalytic electrowinning process and recycles, the redundance discharging, the import of stopping valve connects the outlet of purifying liquid waste of submerged ultrafiltration filtering separation system dialyzate basin, the outlet of stopping valve enters osmosis filtration film system through film system water supply pump, stopping valve, security personnel's strainer and film system high pressure pump successively, and the dialyzate outlet of osmosis filtration film system connects the import of dialyzate basin through stopping valve;
The reverse osmosis membrane filtration recovery of circulatory system: the reverse osmosis membrane filtration recovery of circulatory system is provided with backflow concentrated solution topping-up pump, stopping valve.The concentrated solution outlet one tunnel of osmosis filtration film system refluxes and takes back stream concentrated solution topping-up pump inlet, pumps into the reverse osmosis membrane filtration separation system; The recycling of rice catalytic electrolysis jar is admitted through valve return in another road of concentrated solution outlet of osmosis filtration film system;
Reverse osmosis membrane cleaning and regeneration system: reverse osmosis membrane cleaning and regeneration system is provided with cleaning fluid tank, backwashing pump, stopping valve and duct coupling, the import of cleaning fluid tank connects the condensed water outlet of osmosis filtration film system through stopping valve, one way outlet of cleaning fluid tank connects the condensed water outlet of osmosis filtration film system through stopping valve, another way outlet of cleaning fluid tank is behind stopping valve, and one the tunnel connects film system water supply pump discharge through backwashing pump and stopping valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206906572U CN201923914U (en) | 2010-12-30 | 2010-12-30 | Printing and dyeing wastewater recycling device based on electrolysis and laminating technologies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206906572U CN201923914U (en) | 2010-12-30 | 2010-12-30 | Printing and dyeing wastewater recycling device based on electrolysis and laminating technologies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201923914U true CN201923914U (en) | 2011-08-10 |
Family
ID=44427778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206906572U Expired - Lifetime CN201923914U (en) | 2010-12-30 | 2010-12-30 | Printing and dyeing wastewater recycling device based on electrolysis and laminating technologies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201923914U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092879A (en) * | 2010-12-30 | 2011-06-15 | 波鹰(厦门)科技有限公司 | Dye wastewater cyclic utilization device and method based on electrolysis and lamination technologies |
| CN105174565A (en) * | 2015-10-13 | 2015-12-23 | 辽宁石油化工大学 | Method for deeply treating acrylon wastewater |
| CN111072108A (en) * | 2020-01-07 | 2020-04-28 | 宁波斯蒂罗科技有限公司 | Printing and dyeing sewage treatment cyclic utilization device |
-
2010
- 2010-12-30 CN CN2010206906572U patent/CN201923914U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092879A (en) * | 2010-12-30 | 2011-06-15 | 波鹰(厦门)科技有限公司 | Dye wastewater cyclic utilization device and method based on electrolysis and lamination technologies |
| CN102092879B (en) * | 2010-12-30 | 2012-07-04 | 波鹰(厦门)科技有限公司 | Dye wastewater cyclic utilization device and method based on electrolysis and lamination technologies |
| WO2012089102A1 (en) * | 2010-12-30 | 2012-07-05 | 波鹰(厦门)科技有限公司 | Recycling apparatus for waste water from printing and dyeing processes based on electrolysis in combination with membrane technology, and method therefor |
| CN105174565A (en) * | 2015-10-13 | 2015-12-23 | 辽宁石油化工大学 | Method for deeply treating acrylon wastewater |
| CN105174565B (en) * | 2015-10-13 | 2018-05-15 | 辽宁石油化工大学 | Acrylic fiber wastewater deep treatment method |
| CN111072108A (en) * | 2020-01-07 | 2020-04-28 | 宁波斯蒂罗科技有限公司 | Printing and dyeing sewage treatment cyclic utilization device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101704594B (en) | Device and method for purifying printing and dyeing advanced treatment wastewater | |
| CN102092879B (en) | Dye wastewater cyclic utilization device and method based on electrolysis and lamination technologies | |
| CN102050555B (en) | Device and method for treating and recycling printing and dyeing wastewater | |
| CN102260009B (en) | Method for processing dye wastewater | |
| CN102086072B (en) | Cyclic utilization method of dyeing and printing advanced treatment wastewater | |
| CN102701500A (en) | Printing and dyeing wastewater zero-discharge reuse treatment method | |
| CN203238140U (en) | Multi-stage deep wastewater circulating treatment system | |
| CN101700943A (en) | Printing and dyeing waste water advanced treatment recovery method | |
| CN201560154U (en) | Advanced-treated dyeing wastewater purifier | |
| CN102260013A (en) | Device and method for preparing recycled water on basis of electrolysis and double-membrane technology | |
| CN101041532A (en) | Printing and dyeing waste water treatment method based on film technology | |
| CN102107971B (en) | Papermaking wastewater advanced treatment and recycling device and method thereof | |
| CN102344227A (en) | Hairwork waste water cyclic utilization device and treatment method thereof | |
| CN206266392U (en) | A kind of papermaking wastewater zero-discharge treatment system | |
| CN102120678A (en) | Sewage recycling device based on electrolysis and membrane biological reactor technology and method thereof | |
| CN102295373A (en) | Papermaking wastewater cycling and utilizing apparatus and method based on electrochemical and electrodialysis technologies | |
| CN105174663A (en) | Method for treating dye waste water | |
| CN102145949B (en) | Tanning advanced treatment wastewater recycling device and method | |
| CN101643298A (en) | Organic wastewater treatment process containing membrane filtration element | |
| CN201923914U (en) | Printing and dyeing wastewater recycling device based on electrolysis and laminating technologies | |
| CN103145264A (en) | Purifying treatment and recycling process for high-salt-content reclaimed water | |
| CN2763262Y (en) | Equipment for treating wastew ater from dys processing by using membrane-tech. | |
| CN101948220B (en) | Method for treating printing and dyeing wastewater | |
| CN201999821U (en) | Printing and dyeing advanced treated wastewater recycling device | |
| CN201952316U (en) | Device for recycling tanning advanced treatment waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
|
| CX01 | Expiry of patent term |