CN103588318A - Processing method used for multiple recycling of fur dyeing effluent - Google Patents
Processing method used for multiple recycling of fur dyeing effluent Download PDFInfo
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Abstract
The invention discloses a processing method used for multiple recycling of fur dyeing effluent. The processing method comprises following steps: the fur dyeing effluent is collected; an alkaline material is added; the mixture is stirred, and pH value of the mixture is adjusted to 8.5 to 10.5; a decolorant solution is added, the mixed material is stirred; flocculating agent PAM is added, and the obtained material is stirred, is allowed to stand, and is delivered to a plate-and-frame filter press for microfiltration; and an obtained clear filtrate is recycled. The fur dyeing effluent processed via the processing method is capable of meeting with recycling standards, and can be recycled for 2 to 3 times. After drying, fur color is pure, pure is fluffy and flexible, is light and natural, equipment is simple, processing cost is low, and processing procedures are convenient to control.
Description
Technical field
The present invention relates to the treatment process that a kind of fur dyeing waste liquid repeatedly recycles.
Background technology
Fur has abundant fleece, and in order to prevent that in the course of processing, hair fibre tangles, so fur dyeing process water amount is very big, is generally 20 times of pelage quality.Because fur dyeing workshop section has added miscellaneous chemical, the auxiliary agent such as dye well wetting agent, laking agent that comprises hard degradation, these chemical have considerable part not absorbed by fur, but directly enter in waste water, so fur dyeing waste water composition is very complicated.During fur dyeing, on the fleece of fur and dermatotome, absorption has a large amount of Cr in addition
3+salt (because will pass through chrome tanning or chromium retanning before fur dyeing), under acidic conditions, these are in conjunction with unstable Cr
3+salt can be free in dyeing waste-water.Therefore fur dyeing waste water has just become the dyeing waste-water that is different from general dyeing waste water and has unique characteristics, and it mainly contains following characteristics: pH between 3.5-4.5, Cr
3+concentration>=30mg/L, contains a large amount of dyestuffs and part surface promoting agent, auxiliary agent, and fatting agent etc., colourity 200-800 times, even more than thousand times.
Both at home and abroad in the research of relevant fur dyeing method of wastewater treatment, mostly using dyeing waste-water as a kind of sewage, making after treatment dyeing waste-water reach sewage discharge requirement is object, is generally therefore to process by municipal wastewater treatment plant is unified by entering city planting ductwork after pre-treatment.
The Decoloration Method of Dyeing Sewage of research report mainly contains: absorption method, oxidation style, Coagulation Method, electrochemical process, membrane separation process, biological process etc., and the whole bag of tricks has relative merits separately, and applicable elements is also all had nothing in common with each other.Absorption method for example, advantage is that the form of adsorbing is removed dyestuff from water, generally does not need to destroy the structure of dyestuff and reaches decolouring object.Conventional sorbent material have regenerable sorbent as gac, ion exchange resin etc. with non-renewable sorbent material as various natural mineral, industrial waste and natural wastes etc.But the price of resin itself is relatively costly, so its practical application is not extensive, and sorbent material has selectivity for the absorption of dyestuff, for the larger waste water of concentration, conventionally loading capacity is limited, and removal effect is not ideal, fleece color when other sorbent material can affect dyeing waste liquid and recycles.
Oxidation style is the comparatively ripe method of current decolorizing printing and dyeing waste water, and its principle is to utilize various oxygenants that the unsaturated link(age) of chromophoric group in dye molecule is disconnected, and forms less organism or the inorganics of relative molecular mass, thereby makes dyestuff lose color development ability.Conventional oxygenant has ozone, chlorine, clorox and Fenton reagent etc.Ozone is good decolouring oxygenant, and shortcoming is that expense is relatively higher.Because oxidation style can be by the Cr in fur dyeing waste water
3+be oxidized to C
r6+, to environment, cause larger pollution, so oxidation style is not suitable for fur dyeing wastewater treatment.
The dominant mechanism of Coagulation with Treatment waste water from dyestuff is in waste water, to add certain coagulating agent, the effect of catching by compression double electric layer, absorption charge neutrality, adsorption bridging and throw out net, make former water-soluble or be trickle state and the dyestuff contaminant of free settling, filtration not, be combined into larger particles, finally by means of action of gravity, precipitate to reach the object of solid-liquid separation.The advantage of Coagulation with Treatment waste water from dyestuff is that its technical process is simple, convenient operation and management, floor space is little, and treatment capacity is large, very high to hydrophobic dye substantive dyestuff as larger in dispersed dye, thioxine dyes, vat dyes and number molecular weight and neutral dye decolorizing efficiency.But Coagulation Method decolouring produces a large amount of mud and increases running cost and difficulty, and use range is narrower, to be difficult for forming the water-soluble dye substantive dyestuff waste water as micromolecular in matching stain, reactive dyestuffs and part of colloidal particle, coagulate decoloring effect is undesirable, and the dyestuff of these types maximum dyestuff in fur dyeing waste water just.In addition in Coagulation Method, with coagulating agent ferrous sulfate or ferrous sulfate+PAM, polymerize aluminum chloride (PAC)+PAM, 3 kinds of coagulating agent combination good decolorizing effect, but remain in meeting the impacts such as ferrous sulfate in waste liquid, the aluminum chloride waste liquid fleece color while recycling that dyes.
Electrochemical process is the direct or indirect electrochemical reaction of utilizing, the dye wastewater treatment method of removing with color base group is converted into colourless group form in waste water.According to the difference of electrode reaction mode, can be divided into internal electrolysis, electrical aggregation and floatation method, By Electrocatalytic Oxidation etc.The advantage of internal electrolysis is the energy treatment of wastes with processes of wastes against one another, does not consume the energy, can removes multiple pollutant component and colourity, can also improve the biodegradability of difficult degradation thing.Its shortcoming is that speed of response is slower, and reaction column easily stops up, more difficult to high-concentration waste water treatment, and reactor turndown ratio is poor.The advantage of electricity flocculence is that equipment is simple, easy to operate, for contain-NO of water-insoluble dye well
2dyestuff intermediate treatment effect better.Shortcoming is that treatment effect is poor, and this method current consumption is very large to dyestuffs such as water-soluble good acidity, activity, and the easy loss of anode metal can produce mud etc. and easily cause secondary pollution.
Membrane separation process is a kind of new separation technology growing up in recent decades, and at present, the membrane technique that is applied to dye wastewater treatment mainly contains ultrafiltration process, nano filtering process and reverse osmosis method.The advantage of membrane separation process has separation efficiency high, energy consumption is low, can be recycled, technique is simple, easy to operate, non-secondary pollution etc., but due to this Technology Need specific equipment, cost is high, the easy fouling of film is stopped up, and be only applicable to the dye and dye intermediate waste water that concentration is lower, so not yet promote at present.
Biological process is the metabolism that utilizes microorganism, the organic treatment process in oxygenolysis waste water.According to the difference of the aerobic requirement of microorganism, biological process mainly can be divided into aerobic treatment method and the large class of anaerobic treatment method two.Conventional biological treatment mainly contains activated sludge process and biomembrance process, activated sludge process and biomembrance process all exist same problem, the clearance that is COD and colourity is not high, system is processed the emission standard that water outlet can not reach regulation, and, the more important thing is that the processing of excess sludge and high working cost allow people be difficult to bear.
Summary of the invention
The treatment process that provides a kind of fur dyeing waste liquid repeatedly to recycle is provided technical problem to be solved by this invention, feature for fur dyeing waste water, the dyeing waste liquid of take recycles as target, absorption, flocculation, micro-filtration are combined, remove dyestuff, chromic salts and organic impurity etc. in dyeing waste-water simultaneously, percent of decolourization on average reaches more than 80%, and after decolouring, waste liquid chromium content reaches below 1.5mg/L.Fur dyeing waste liquid after the inventive method is processed can meet the requirement recycling, and the waste liquid that can make to dye recycles 2-3 time, and the fur fleece color after dyeing is pure, and loose light is natural, and equipment is simple flexibly, and processing cost is cheap, easy to control.
The treatment process that described fur dyeing waste liquid repeatedly recycles, technical process is as follows:
Waste water after collection dyeing → add basic material, stirs evenly, and adjusting pH=8.5-10.5 → add discoloring agent solution, stirs evenly → add flocculation agent PAM solution, stir evenly → standing → plate-and-frame filter press micro-filtration, the clear liquid reuse leaching.
In above-mentioned treatment process, described basic material is lime or sodium hydroxide.
Described discoloring agent is Dyhard RU 100-yuban class discoloring agent (Jiangsu city Lv Bo Water Treatment Chemicals company limited produces, and Tongxiang City Zhan Sheng trade Co., Ltd sells), active constituent content approximately 50%.Discoloring agent is mixed with to the solution that concentration is 10wt%, 0.1%-0.8%, v/v(L/L that consumption is wastewater flow rate).
Described flocculation agent PAM is that (Liaocheng City Hua Feng Chemical Industry Science Co., Ltd produces anion-polyacrylamide organic floculant, code name H9052), molecular weight 1200-1500 ten thousand, ion degree 25%-30%, be mixed with the solution that concentration is 0.1wt%, consumption is 0.5%-1%, the v/v(L/L of wastewater flow rate).
Described plate-and-frame filter press micro-filtration method is as follows: with without stopping up blow-off line pump by entering plate-and-frame filter press micro-filtration through decolouring, de-chromium, the dyeing waste drains pump that removes after organic impurity, control plate-and-frame filter press pressure 18-25KG, filter cloth density 15-25 micron.The mud leaching is separated, filtrate, for dyeing, is recycled.
The present invention is by adopting discoloring agent and basic material, organic floculant in conjunction with the method for decolouring, take off chromium and the micro filtering combined processing of plate-and-frame filter press to fur dyeing waste liquid, remove dyestuff, chromic salts and organic impurity in waste liquid, reach the object that fur dyeing waste liquid repeatedly recycles.
Particularly, the present invention is by adopting Dyhard RU 100-yuban class discoloring agent and basic material, anion-polyacrylamide organic floculant PAM in conjunction with the method for decolouring, take off chromium and the micro filtering combined processing of plate-and-frame filter press to fur dyeing waste liquid, remove dyestuff, chromic salts and organic impurity in dyeing waste liquid, the waste liquid water quality that makes to dye meets fur dyeing requirement, reaches the System and method for that fur dyeing waste liquid repeatedly recycles.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is described in further detail, but described embodiment does not limit the scope of the invention.
Analysing and detecting method is as follows:
PH pH-value determination pH: adopt acidometer to measure.
Chrome determination: adopt diphenylcarbazide colorimetric method for determining.
Determination of colority: adopt extension rate method to measure.
Embodiment 1
1, dying dark-brown dyeing waste-water recycles
(1) new dye liquor dyes after dark-brown, gets 2000 liters of waste water, pH=3.5-4.0,2000 times of colourities, chromium content 40mg/L.Add 1.6 kilograms, lime (wastewater flow rate 0.08%), adjust pH=9.0-10.0, add concentration be 10wt% 2.6 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.13%), to add concentration be 10 liters of the flocculation agent PAM solution (wastewater flow rate 0.5%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.Filtrate colourity approximately 200, percent of decolourization 90%; Chromium content 1.45mg/L, chromium is removed rate 96%.
(2) with the waste liquid after processing, recycle for the first time and dye dark-brown.
Get 1000 liters of waste water after recycling for the first time, pH=3.5-4.0,2000 times of colourities, add 0.8 kilogram, lime (wastewater flow rate 0.08%), adjust pH=9.0-10.0, add concentration be 10wt% 2 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.2%), to add concentration be 8 liters of the flocculation agent PAM solution (wastewater flow rate 0.8%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.Approximately 200 times of filtrate colourities, percent of decolourization 90%, chromium content 0.30mg/L, chromium clearance 99%.
(3) with the waste liquid after processing, recycle for the second time and dye dark-brown.
Get 1000 liters of waste water after recycling for the second time, pH=3.5-4.0,2000 times of colourities.Add 1.250 kilograms, lime (wastewater flow rate 0.125%), adjust pH=9.0-10.0, add concentration be 10wt% 3 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.3%), to add concentration be 5 liters of the flocculation agent PAM solution (wastewater flow rate 0.5%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.Approximately 200 times of filtrate colourities, percent of decolourization 90%, chromium content 0.28mg/L, chromium clearance 99%.
With the waste liquid after processing, recycle for the third time and dye dark-brown.
(4) get 600 liters of waste water after recycling for the third time, pH=3.5-4.0,2000 times of colourities.Add 0.9 kilogram, lime (wastewater flow rate 0.15%), adjust pH=10-11, add concentration be 10wt% 2.4 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.4%), to add concentration be 3 liters of the flocculation agent PAM solution (wastewater flow rate 0.5%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, approximately 200 times of filtrate colourities, percent of decolourization 90%.Discharge.
Amount to average percent of decolourization 90%, chromium clearance 98%, chromium content is lower than 1.5mg/L.
2, principal element is dyed the decolorizing effect impact of dark waste water on fur
(1) impact of pH value on percent of decolourization
Get hyperchromatic waste water 100mL in Erlenmeyer flask, add flocculation agent PAM solution 1ml, add Dyhard RU 100-yuban class discoloring agent solution 1ml, regulate the pH value of dyeing waste liquid with lime, standing after fully stirring, decolorizing effect is in Table 1.
The impact of table 1pH value on percent of decolourization
As shown in Table 1, the optimal ph of processing deep colour dyeing waste water is 9.
(2) impact of Dyhard RU 100-yuban class discoloring agent solution usage that concentration is 10wt% on percent of decolourization
Get hyperchromatic waste water 100mL in Erlenmeyer flask, with lime, dyeing waste liquor PH is adjusted to 9, add flocculation agent PAM solution 0.5ml, regulate the amount of the discoloring agent solution adding, standing after fully stirring, decolorizing effect is in Table 2.
The impact of table 2 discoloring agent consumption on percent of decolourization
As shown in Table 2, Dyhard RU 100-yuban class discoloring agent solution (concentration is 10wt%) optimum amount of processing dark waste water in production practice is 0.5% of wastewater flow rate.
(3) impact of the flocculation agent PAM solution usage that concentration is 0.1wt% on percent of decolourization
Get hyperchromatic waste water 100mL in Erlenmeyer flask, with lime, dyeing waste liquor PH is adjusted to 9, adding concentration is Dyhard RU 100-yuban class discoloring agent solution 0.5ml of 10wt%, regulates the amount that adds flocculation agent PAM solution, standing after fully stirring, decolorizing effect is in Table 3.
The impact of table 3 flocculation agent PAM solution usage on percent of decolourization
As shown in Table 3, the coagulate decoloring effect when flocculation agent PAM solution dosage that concentration is 0.1wt% is 0.5mL is best, and percent of decolourization can reach 80%.The optimum amount of the flocculation agent PAM solution that therefore concentration is 0.1wt% is wastewater flow rate 0.5%.
To sum up, process fur deep colour dyeing waste water, optimum process condition is: pH=9, and the discoloring agent solution usage that concentration is 10wt% is wastewater flow rate 0.5%, the flocculation agent PAM solution usage that concentration is 0.1wt% is wastewater flow rate 0.5%, micro-filtration after decolorization flocculation.Percent of decolourization is more than 95%, and chromium content is lower than 1.5mg/L, and chromium clearance is more than 95%.
Embodiment 2
1, dying light brown dyeing waste-water recycles
(1) new dye liquor dyes after light brown, gets 1500 liters of waste water, and colourity is 750, chromium content 39.19mg/L, pH=3.5-4.2.Add 1.2 kilograms, lime (wastewater flow rate 0.08%), adjust pH=9.0-10.0, add concentration and be 3 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.2%) of 10wt%, adding concentration is 8 liters of the flocculation agent PAM solution (wastewater flow rate 0.53%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.Approximately 70 times of filtrate colourities, percent of decolourization is more than 90%.
With the waste liquid after processing, recycle for the first time and dye light brown.
(2) get 1000 liters of waste water after recycling for the first time, 800 times of colourities, pH=3.5-4.0.Add 0.8 kilogram, lime (wastewater flow rate 0.08%), adjust pH=9.0-10.0, adding concentration is 3 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.3%) of 10wt%, adding concentration is 3 liters of the flocculation agent PAM solution (wastewater flow rate 0.3%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.Approximately 120 times of filtrate colourities, percent of decolourization is more than 85%.
With the waste liquid after processing, recycle for the second time and dye light brown.
(3) get 500 liters of waste water after recycling for the second time, 900 times of colourities, pH=3.5-4.0 adds 0.55 kilogram, lime (wastewater flow rate 0.11%), adjust pH=9.0-10.5, adding concentration is 2.5 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.5%) of 10wt%, concentration is 2.5 liters of the flocculation agent PAM solution (wastewater flow rate 0.5%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated.Approximately 160 times of filtrate colourities, percent of decolourization 82%.Discharge.
Average percent of decolourization 85.7%, chromium content is lower than 1.5mg/L.
2, principal element is dyed the decolorizing effect impact of light waste water on fur
(1) impact of pH value on percent of decolourization
Get hypochromatic waste water 100mL in Erlenmeyer flask, adding concentration is the flocculation agent PAM solution 1ml of 0.1wt%, and adding concentration is Dyhard RU 100-yuban class discoloring agent solution 1ml of 10wt%, regulates the pH value of dyeing waste liquid with lime, standing after fully stirring, decolorizing effect is in Table 4.
The impact of table 4pH value on percent of decolourization
As shown in Table 4, when the pH of waste water value is 9, percent of decolourization can reach 90%.Therefore the optimal ph of processing this waste water is 9.
(2) impact of Dyhard RU 100-yuban class discoloring agent solution usage that concentration is 10wt% on percent of decolourization
Get hypochromatic waste water 100mL in Erlenmeyer flask, with lime, dyeing waste liquor PH is adjusted to 9, adding concentration is the flocculation agent PAM solution 1ml of 0.1wt%, and it is the amount of Dyhard RU 100-yuban class discoloring agent solution of 10wt% that adjusting adds concentration, standing after fully stirring, decolorizing effect is in Table 5.
Table 5 concentration is the impact on percent of decolourization of Dyhard RU 100-yuban class discoloring agent solution of 10wt%
As shown in Table 5, when discoloring agent solution usage is 0.8mL, the coagulate decoloring effect of waste water is best, and percent of decolourization can reach 90%.Therefore the discoloring agent solution optimum amount of processing this waste water is 0.8%.
(3) impact of the flocculation agent PAM solution usage that concentration is 0.1wt% on percent of decolourization
Get hypochromatic waste water 100mL in Erlenmeyer flask, with lime, dyeing waste liquor PH is adjusted to 9, add discoloring agent solution 0.5mL, regulate the amount that adds flocculation agent PAM solution, standing after fully stirring, decolorizing effect is in Table 6.
Table 6 concentration is the impact on percent of decolourization of the flocculation agent PAM solution usage of 0.1wt%
As shown in Table 6, the coagulate decoloring effect when flocculation agent PAM solution dosage that concentration is 0.1wt% is 0.8mL is best, and percent of decolourization can reach 80%.The optimum amount of the flocculation agent PAM solution that therefore concentration is 0.1wt% is 0.8%.
To sum up: process fur and dye light-colored dyeing waste water, optimum process condition is: pH=9, concentration is that 10wt% discoloring agent solution usage is 0.8%, concentration is that 0.1wt% flocculation agent PAM solution usage is 0.8%.Micro-filtration after decolorization flocculation.
According to this optimised process, percent of decolourization 85%.-95%, chromium content is lower than 1.5mg/L.
Embodiment 3
1, dye light brown and dye dark-brown dyed blended waste water circulation use
(1) new dye liquor dyes light brown, dyes after dark-brown, and two kinds of waste water are mixed according to volume ratio 1:1, gets 2000 liters of waste water, and colourity is 1800 times, pH=3.5-4.2, chromium content 60.07mg/L.Add 1.625 kilograms, lime (wastewater flow rate 0.08%), adjust pH=9.0-10.0, add concentration and be 6 liters of Dyhard RU 100-yuban class discoloring agent solution (wastewater flow rate 0.3%) of 10wt%, concentration is 6.5 liters of the flocculation agent PAM solution (wastewater flow rate 0.33%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.Approximately 90 times of filtrate colourities, percent of decolourization 95%.
With the waste liquid after processing, recycle for the first time and dye light brown.
(2) get 1000 liters of waste water after recycling for the first time, 1800 times of colourities, pH=3.5-4.0.Add 0.8 kilogram, lime (wastewater flow rate 0.08%), adjust pH=9.0-10.0, add concentration and be 2.5 liters of the discoloring agent solution (wastewater flow rate 0.25%) of 10wt%, concentration is 4.5 liters of the flocculation agent PAM solution (wastewater flow rate 0.45%) of 0.1wt%, stir, standing 2 hours, with pumping into plate-and-frame filter press press filtration without stopping up blow-off line pump, control plate-and-frame filter press pressure 18KG, 15 microns of filter cloth density.The mud leaching is separated, and filtrate, for dyeing, recycles.150 times of colourities, percent of decolourization more than 92%, recycles for the second time and dyes light brown with the waste liquid after processing, discharge.
In whole technological process, average percent of decolourization 93.5%.
In above three examples, the waste water after processing is transparent, and colourity is lower, and without regulating pH value, after standing over night, pH value can drop to 9 left and right, can direct reuse in dying fur.The colourless dyeing flower of fur after dyeing, situation is normal.From embodiment 2, when processing fur dyes light-colored dyeing waste water, circulate at most 2 times, the standing rear supernatant liquid that spends the night is more clear, and middle level clear liquid is more muddy, can not continue on for light water reuse.While processing fur deep colour dyeing waste water, circulate at most 3 times, the standing rear supernatant liquid that spends the night is more clear, and middle level clear liquid is more muddy, and pH is too high can not continue on for dark water reuse; While processing the dyed blended waste water of the dark light 1:1 of fur, circulate at most 2 times.
Claims (7)
1. the treatment process that fur dyeing waste liquid repeatedly recycles, its technical process is as follows:
Waste water after collection dyeing → add basic material, stirs evenly, and adjusting pH=8.5-10.5 → add discoloring agent solution, stirs evenly → add flocculation agent PAM solution, stirs evenly → standing → use plate-and-frame filter press micro-filtration, the clear liquid reuse leaching.
2. treatment process according to claim 1, is characterized in that, described basic material is lime or sodium hydroxide.
3. treatment process according to claim 1, is characterized in that, described discoloring agent is Dyhard RU 100-yuban class discoloring agent, and active constituent content is 50%.
4. treatment process according to claim 3, is characterized in that, discoloring agent strength of solution is 10wt%, the 0.1%-0.8% that consumption is wastewater flow rate, v/v.
5. treatment process according to claim 1, is characterized in that, described flocculation agent is anion-polyacrylamide organic floculant, molecular weight 1200-1500 ten thousand, ion degree 25%-30%.
6. treatment process according to claim 5, is characterized in that, flocculation agent PAM strength of solution is 0.1wt%, the 0.5%-1% that consumption is wastewater flow rate, v/v.
7. treatment process according to claim 1, it is characterized in that, described plate-and-frame filter press micro-filtration method is as follows: with will entering plate-and-frame filter press through decolouring, de-chromium, the dyeing waste drains pump that removes after organic impurity without stopping up blow-off line pump, control plate-and-frame filter press pressure 18-25KG, filter cloth density 15-25 micron.The mud leaching is separated, filtrate, for dyeing, is recycled.
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| CN104003552A (en) * | 2014-05-28 | 2014-08-27 | 佛山纬达光电材料有限公司 | Method for processing waste water of dye type polaroid |
| CN104193045A (en) * | 2014-07-11 | 2014-12-10 | 奈曼明州化工科技有限公司 | Active turquoise blue dye production wastewater reclamation process |
| CN104671574A (en) * | 2015-01-30 | 2015-06-03 | 绍兴奇彩化工有限公司 | Treatment process of sodium metanitrobenzene sulfonate production wastewater |
| CN104878547A (en) * | 2015-06-06 | 2015-09-02 | 华斯农业开发股份有限公司 | Device and process for recycling dyeing liquid of acid dye for fur |
| CN107473490A (en) * | 2017-06-30 | 2017-12-15 | 芜湖富春染织股份有限公司 | A kind of scribbled modifying porcelain method |
| CN107459162A (en) * | 2017-07-27 | 2017-12-12 | 张家港市双盈印染有限公司 | A kind of method that dyeing and printing sewage is handled using decolorising agent |
| CN108147590A (en) * | 2018-02-24 | 2018-06-12 | 沈阳富创精密设备有限公司 | The processing method of dyeing waste-water |
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| CN110183034A (en) * | 2019-05-06 | 2019-08-30 | 中运建设控股有限公司 | The recovery method of fur manufacturing waste liquid |
| CN110255753A (en) * | 2019-05-16 | 2019-09-20 | 中国皮革制鞋研究院有限公司 | The processing method of tannin extract waste water |
| CN110926252A (en) * | 2019-11-16 | 2020-03-27 | 山东明福染业有限公司 | Heat energy recovery device and heat energy recovery process for dyeing waste liquid |
| CN115385483A (en) * | 2022-09-16 | 2022-11-25 | 嘉兴学院 | Environment-friendly treatment method for fur processing wastewater |
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