CN108821473A - A kind of dyeing and printing sewage treatment process - Google Patents

A kind of dyeing and printing sewage treatment process Download PDF

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Publication number
CN108821473A
CN108821473A CN201810725612.5A CN201810725612A CN108821473A CN 108821473 A CN108821473 A CN 108821473A CN 201810725612 A CN201810725612 A CN 201810725612A CN 108821473 A CN108821473 A CN 108821473A
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CN
China
Prior art keywords
solid
dyeing
sewage
waste water
sewage treatment
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CN201810725612.5A
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Chinese (zh)
Inventor
贺士友
刘海军
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肇庆市创业帮信息技术有限公司
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Priority to CN201810725612.5A priority Critical patent/CN108821473A/en
Publication of CN108821473A publication Critical patent/CN108821473A/en

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/24Treatment of water, waste water, or sewage by flotation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step

Abstract

The invention belongs to technical field of sewage, and in particular to a kind of dyeing and printing sewage treatment process.Decolourizing agent will be added after dyeing and printing sewage filtering removal solid sundries and fraction solids suspended matter and remove color, and flocculant then be added flocculation reaction occurs and form solid floccule body, by ozone oxidation, air-flotation process after separation of solid and liquid, dyeing and printing sewage after treatment can meet《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.

Description

A kind of dyeing and printing sewage treatment process
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of dyeing and printing sewage treatment process.
Background technique
Dyeing waste water is one of technique waste water main source, because its ingredient is complex, containing a large amount of dyestuff, slurry, The chemical substances such as surfactant, alkaline agent, organic concentration and basicity are higher in waste water, water quality fluctuation is strong, biodegradability Difference and have certain coloration, for a long time, dyeing waste water is always a key points and difficulties in Industrial Wastewater Treatment.Due to The limitation of production scale of enterprise and cost can not well as required pre-process dyeing waste water, and which increase second levels The operating load of urban wastewater treatment firm, influent quality are affected by dyeing waste water, and show organic concentration and alkali Degree is big compared with high, water quality and quantity fluctuation, with certain coloration, the poor feature of biodegradability.Currently, for dyeing waste water and The works such as coagulation, filtering, absorption, chemical oxidation, membrane module and biological treatment were researched and developed in the processing of town sewage containing dyeing waste water Skill, but a kind of economical and effective is proved to be as the sewage water treatment method of core using bioanalysis and applies wider processing method.For More stringent Effluent criteria, the processing of the town sewage containing dyeing waste water need to concentrate solve the problems, such as be:(chemistry needs COD Oxygen amount) and the qualified discharge of TP (total phosphorus content), coloration be effectively reduced and effective control of biological treatment system sludge bulking. Anaerobic hydrolysis technique is the more general pre-treatment means of dyeing waste water, and longer hydraulic detention time to a certain extent can be with Improve the biodegradability of the town sewage containing dyeing waste water, but its contribution in the reduction of COD is little, can not change well System hair can not be effectively reduced in the impact load that the fluctuation of kind influent quality generates subsequent bio body processing system A possibility that primary sludge expands and the stability for keeping its denitrogenation dephosphorizing function.Contact oxidation technology is more common biological treatment System, apposition growth of the biomembrane on filler can be effectively reduced the incidence of sludge bulking, while can be to organic matter It is adequately degraded, but past engineering shows:The concentration of one water outlet COD is generally 80~180mg/L, is not able to satisfy one The requirement of the discharge standard of grade B;Secondly water outlet still contains certain coloration, UV disinfection system is used for some outlet water at tail end The efficiency of sewage treatment plant, ultraviolet disinfection is substantially reduced, and energy consumption will significantly increase;Thirdly contact oxidation technology has centainly The function of denitrogenation, but the effect of its dephosphorization is very weak, it is difficult to reach the discharge standard of level-one B.By biological reinforced PACT technique Also there is application in dyeing waste water, adding for Powdered Activated Carbon can be with prolongation microorganism and hardly degraded organic substance in aeration tank Residence time in system, to enhance biological treatment system to toxic, organic pollutant degradation capability difficult to degrade, together When also have certain decolorizing effect, but single biological treatment system is had no idea the discharge standard that COD is reduced to level-one B.
Rich wait of Zhourong pre-processes dyeing waste water using catalyzed iron internal electrolysis process, the results showed that catalyzed iron internal electrolysis process The organic matter for having inhibition to biology can be effectively removed, created advantage for subsequent biochemical treatment.Zhourong is rich etc. Have studied the influence to catalyzed iron internal electrolysis process processing Acid Brilliant Scarlet GR waste-water decolorizing degradation effect, it is believed that in optimum reaction condition Under, removal rate of the removal rate greater than 95%, CODcr of Acid Brilliant Scarlet GR chroma in waste water is 55% or so.Catalyzed iron internal electrolysis process It is high to the treatment effeciency of Acid Brilliant Scarlet GR waste water, and have wider pH adaptation range.Huang Lihui etc. has studied catalytic internal electrolysis of iron Method handles dyeing waste water test, and test result shows that the residence time that iron reactor is catalyzed for waste water of basic printing and dyeing should not be small In 5h.Catalyzed iron internal electrolysis process is a kind of completely new sewage disposal technology, but the application of catalyzed iron internal electrolysis process mostly also in Experiment and the pilot scale stage, and the higher cost of material especially copper, consumption it is too fast.Jiang Yu is uncommon et al. to replace iron charcoal with aluminium charcoal, right Dyeing waste water has carried out microelectrolysis processing, this method simple process, easily industrializes, but the removal rate of CODcr does not have and significantly mentions It is high.
Summary of the invention
The object of the present invention is to provide a kind of dyeing and printing sewage treatment process.Dyeing and printing sewage is filtered into removal solid sundries and portion Decolourizing agent is added except color after dividing solid suspension, flocculant is then added, flocculation reaction formation solid floccule body, solid-liquid point occurs By ozone oxidation, air-flotation process from after, dyeing and printing sewage after treatment can meet《The discharge of textile dyeing and finishing industrial water pollution object Standard》Requirement.
The technical scheme is that:
A kind of dyeing and printing sewage treatment process, includes the following steps:
(1) it filters:Sewage enters in grille well, bulk solid sundries in grid filtration in grille well removal sewage and Fraction solids suspended matter;
(2) discoloration:Sewage after removal bulk solid sundries and fraction solids suspended matter enters in conditioning tank, and discoloration is added Agent stirs evenly;
(3) flocculation reaction:Sewage after adjusting enters in flocculation tank, and flocculant is added, stirs evenly, makes sewage In colloidal substance and solid suspension be sufficiently mixed with flocculant, formed solid floccule body;
(4) it is separated by solid-liquid separation:Sewage containing solid floccule body is entered into sedimentation basin, alum and lime, which is added, to be made in sewage Solid floccule body settles in sedimentation basin and forms solid sludges, is deposited on bottom of pond, reaches separation of solid and liquid purpose;
(5) sewage after separation of solid and liquid is successively passed through into ozone oxidation, air-flotation process.
Preferably, decolourizing agent is potassium permanganate, bodied ferric sulfate, melamine, glyoxal and ammonium chloride in step (2) Mixture.
It is highly preferred that the ratio of each component is in step (2) decolourizing agent:2~3 parts by weight of potassium permanganate, bodied ferric sulfate 1 ~2 parts by weight, 4~7 parts by weight of melamine, 0.9~1.2 parts by weight of glyoxal, 0.5~0.8 parts by weight of ammonium chloride.
Preferably, decolourizing agent additional amount is 100~125mg/L waste water in step (2).
Preferably, flocculant by polyaluminum ferric chloride and polyacrylamide adds water to be made in step (3), and weight ratio is 7~10:2~3:88~100.
Preferably, flocculant addition is 70~110mg/L waste water in step (3).
Preferably, in step (4) alum additional amount be 1800~1950mg/L waste water, lime adding amount be 500~ 600mg/L waste water.
Preferably, ozone dosage is 25~30mg/L waste water in step (5).
Preferably, air-flotation process uses shallow air-floatation in step (5), captures absorption fine particle glue with a large amount of microbubbles Glutinous object is allowed to float, and further progress is separated by solid-liquid separation.
Beneficial effects of the present invention are as follows:
Except color, then after dyeing and printing sewage is filtered removal solid sundries and fraction solids suspended matter decolourizing agent is added in the present invention Flocculant is added flocculation reaction occurs and form solid floccule body, by ozone oxidation, air-flotation process after separation of solid and liquid, by processing Dyeing and printing sewage afterwards can meet《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.
Specific embodiment
With reference to embodiment, technical solution of the present invention is described in further detail, but do not constituted pair Any restrictions of the invention.
Embodiment 1
A kind of dyeing and printing sewage treatment process, includes the following steps:
(1) it filters:It is 800mg/L, BOD by CODcr5The dyeing and printing sewage for being 11 for 250mg/L and pH value is intake with 70T/H Traffic flow enters in grille well, the bulk solid sundries and fraction solids suspended matter in grid filtration removal sewage in grille well;
(2) discoloration:Sewage after removal bulk solid sundries and fraction solids suspended matter enters in conditioning tank, and weight is added Than being 3:1:5:1:0.7 potassium permanganate, bodied ferric sulfate, melamine, glyoxal and ammonium chloride mixture as discoloration Agent, additional amount are 100mg/L waste water, are stirred evenly;
(3) flocculation reaction:Sewage after adjusting enters in flocculation tank, and aluminium chloride ferrum is added and polyacrylamide adds Water is 9 in mass ratio:3:95 flocculants being configured to, additional amount are 80mg/L waste water, stir evenly, make the colloid substances in sewage Matter and solid suspension are sufficiently mixed with flocculant, form solid floccule body;
(4) it is separated by solid-liquid separation:Sewage containing solid floccule body is entered into sedimentation basin, alum and lime, additional amount point is added Not Wei 1900mg/L waste water and 500mg/L waste water, settle the solid floccule body in sewage in sedimentation basin and form solid sludges, It is deposited on bottom of pond, reaches separation of solid and liquid purpose;
(5) ozone that the sewage after separation of solid and liquid adds 28mg/L waste water is subjected to ozone Oxidation Treatment, then using shallow Layer air-flotation process captures absorption fine particle gluing object with a large amount of microbubbles and is allowed to float, and further progress is separated by solid-liquid separation.
Treated that sewage can reach for the present embodiment《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.
Embodiment 2
A kind of dyeing and printing sewage treatment process, includes the following steps:
(1) it filters:It is 300mg/L, BOD by CODcr5For 80mg/L and pH value be 10.5 dyeing and printing sewage with 70T/H into Water flow flows into grille well, and the grid filtration in grille well removes bulk solid sundries and fraction solids suspension in sewage Object;
(2) discoloration:Sewage after removal bulk solid sundries and fraction solids suspended matter enters in conditioning tank, and weight is added Than being 2:1:7:1:0.7 potassium permanganate, bodied ferric sulfate, melamine, glyoxal and ammonium chloride mixture as discoloration Agent, additional amount are 110mg/L waste water, are stirred evenly;
(3) flocculation reaction:Sewage after adjusting enters in flocculation tank, and aluminium chloride ferrum is added and polyacrylamide adds Water is 9 in mass ratio:2:95 flocculants being configured to, additional amount are 100mg/L waste water, stir evenly, make the colloid in sewage Substance and solid suspension are sufficiently mixed with flocculant, form solid floccule body;
(4) it is separated by solid-liquid separation:Sewage containing solid floccule body is entered into sedimentation basin, alum and lime, additional amount point is added Not Wei 1890mg/L waste water and 520mg/L waste water, settle the solid floccule body in sewage in sedimentation basin and form solid sludges, It is deposited on bottom of pond, reaches separation of solid and liquid purpose;
(5) ozone that the sewage after separation of solid and liquid adds 30mg/L waste water is subjected to ozone Oxidation Treatment, then using shallow Layer air-flotation process captures absorption fine particle gluing object with a large amount of microbubbles and is allowed to float, and further progress is separated by solid-liquid separation.
Treated that sewage can reach for the present embodiment《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.
Embodiment 3
A kind of dyeing and printing sewage treatment process, includes the following steps:
(1) it filters:It is 550mg/L, BOD by CODcr5For 150mg/L and pH value be 10.8 dyeing and printing sewage with 70T/H into Water flow flows into grille well, and the grid filtration in grille well removes bulk solid sundries and fraction solids suspension in sewage Object;
(2) discoloration:Sewage after removal bulk solid sundries and fraction solids suspended matter enters in conditioning tank, and weight is added Than being 3:1:5:0.9:The mixture conduct of 0.7 potassium permanganate, bodied ferric sulfate, melamine, glyoxal and ammonium chloride is gone Toner, additional amount are 120mg/L waste water, are stirred evenly;
(3) flocculation reaction:Sewage after adjusting enters in flocculation tank, and aluminium chloride ferrum is added and polyacrylamide adds Water is 9 in mass ratio:3:89 flocculants being configured to, additional amount are 95mg/L waste water, stir evenly, make the colloid substances in sewage Matter and solid suspension are sufficiently mixed with flocculant, form solid floccule body;
(4) it is separated by solid-liquid separation:Sewage containing solid floccule body is entered into sedimentation basin, alum and lime, additional amount point is added Not Wei 1950mg/L waste water and 600mg/L waste water, settle the solid floccule body in sewage in sedimentation basin and form solid sludges, It is deposited on bottom of pond, reaches separation of solid and liquid purpose;
(5) ozone that the sewage after separation of solid and liquid adds 25mg/L waste water is subjected to ozone Oxidation Treatment, then using shallow Layer air-flotation process captures absorption fine particle gluing object with a large amount of microbubbles and is allowed to float, and further progress is separated by solid-liquid separation.
Treated that sewage can reach for the present embodiment《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.
Embodiment 4
A kind of dyeing and printing sewage treatment process, includes the following steps:
(1) it filters:It is 400mg/L, BOD by CODcr5For 60mg/L and pH value be 10.6 dyeing and printing sewage with 70T/H into Water flow flows into grille well, and the grid filtration in grille well removes bulk solid sundries and fraction solids suspension in sewage Object;
(2) discoloration:Sewage after removal bulk solid sundries and fraction solids suspended matter enters in conditioning tank, and weight is added Than being 3:1:7:0.9:The mixture conduct of 0.7 potassium permanganate, bodied ferric sulfate, melamine, glyoxal and ammonium chloride is gone Toner, additional amount are 115mg/L waste water, are stirred evenly;
(3) flocculation reaction:Sewage after adjusting enters in flocculation tank, and aluminium chloride ferrum is added and polyacrylamide adds Water is 9 in mass ratio:2:89 flocculants being configured to, additional amount are 85mg/L waste water, stir evenly, make the colloid substances in sewage Matter and solid suspension are sufficiently mixed with flocculant, form solid floccule body;
(4) it is separated by solid-liquid separation:Sewage containing solid floccule body is entered into sedimentation basin, alum and lime, additional amount point is added Not Wei 1850mg/L waste water and 580mg/L waste water, settle the solid floccule body in sewage in sedimentation basin and form solid sludges, It is deposited on bottom of pond, reaches separation of solid and liquid purpose;
(5) ozone that the sewage after separation of solid and liquid adds 26mg/L waste water is subjected to ozone Oxidation Treatment, then using shallow Layer air-flotation process captures absorption fine particle gluing object with a large amount of microbubbles and is allowed to float, and further progress is separated by solid-liquid separation.
Treated that sewage can reach for the present embodiment《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.
Performance test
By the embodiment of the present invention 1~4 by sewage treatment process sewage before and after the processing test respectively its CODcr content, BOD5Content, coloration pH value and whether there is sludge, specific testing result is as shown in table 1 below.
1 dyeing and printing sewage of table compares before and after the processing
Dyeing and printing sewage treatment process through the invention can make COD of sewage cr, BOD5, coloration, pH value be substantially reduced, in turn Reach《Textile dyeing and finishing industrial water pollution object discharge standard》Requirement.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, It should be equivalent substitute mode, be included within the scope of the present invention.

Claims (9)

1. a kind of dyeing and printing sewage treatment process, which is characterized in that include the following steps:
(1) it filters:Sewage enters in grille well, and the grid filtration in grille well removes bulk solid sundries and part in sewage Solid suspension;
(2) discoloration:Sewage after removal bulk solid sundries and fraction solids suspended matter enters in conditioning tank, and decolourizing agent is added, It stirs evenly;
(3) flocculation reaction:Sewage after adjusting enters in flocculation tank, and flocculant is added, stirs evenly, makes in sewage Colloidal substance and solid suspension are sufficiently mixed with flocculant, form solid floccule body;
(4) it is separated by solid-liquid separation:Sewage containing solid floccule body is entered into sedimentation basin, alum and lime, which is added, makes the solid in sewage Floccule body settles in sedimentation basin and forms solid sludges, is deposited on bottom of pond, reaches separation of solid and liquid purpose;
(5) sewage after separation of solid and liquid is successively passed through into ozone oxidation, air-flotation process.
2. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that decolourizing agent is height in step (2) Potassium manganate, bodied ferric sulfate, melamine, glyoxal and ammonium chloride mixture.
3. a kind of dyeing and printing sewage treatment process according to claim 2, which is characterized in that each group in step (2) decolourizing agent Point ratio be:2~3 parts by weight of potassium permanganate, 1~2 parts by weight of bodied ferric sulfate, 4~7 parts by weight of melamine, glyoxal 0.9~1.2 parts by weight, 0.5~0.8 parts by weight of ammonium chloride.
4. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that decolourizing agent is added in step (2) Amount is 100~125mg/L waste water.
5. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that flocculant is by gathering in step (3) It closes aluminium chloride ferrum and polyacrylamide adds water to be made, weight ratio is 7~10:2~3:88~100.
6. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that flocculant is added in step (3) Amount is 70~110mg/L waste water.
7. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that in step (4), alum additional amount For 1800~1950mg/L waste water, lime adding amount is 500~600mg/L waste water.
8. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that ozone dosage in step (5) For 25~30mg/L waste water.
9. a kind of dyeing and printing sewage treatment process according to claim 1, which is characterized in that air-flotation process is adopted in step (5) With shallow air-floatation, absorption fine particle gluing object is captured with a large amount of microbubbles and is allowed to float, further progress is separated by solid-liquid separation.
CN201810725612.5A 2018-07-04 2018-07-04 A kind of dyeing and printing sewage treatment process CN108821473A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102020351A (en) * 2009-09-18 2011-04-20 上海华业环保有限公司 Application method of ozone in sewage regulating tank
CN102976522A (en) * 2012-12-03 2013-03-20 吴江市鼎佳纺织有限公司 Acid dye wastewater treatment method
CN204198556U (en) * 2014-10-14 2015-03-11 浙江钱江纺织印染有限公司 A kind of dyeing and printing sewage treatment system
CN104724853A (en) * 2015-03-08 2015-06-24 益阳市富晖制衣有限公司 Clothing dyeing wastewater treatment process
CN105000702A (en) * 2015-07-20 2015-10-28 湖州吉昌丝绸有限公司 Printing and dyeing industry wastewater discoloration treatment method and novel composite decolorant
CN106007270A (en) * 2016-08-04 2016-10-12 迈邦(北京)环保工程有限公司 Printing and dyeing sewage treatment method and printing and dyeing sewage treatment system
CN206244582U (en) * 2016-08-04 2017-06-13 迈邦(北京)环保工程有限公司 Dyeing and printing sewage processing system
CN107473518A (en) * 2017-09-20 2017-12-15 绍兴鑫广科技有限公司 A kind of dyeing and printing sewage handling process using medicament

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102020351A (en) * 2009-09-18 2011-04-20 上海华业环保有限公司 Application method of ozone in sewage regulating tank
CN102976522A (en) * 2012-12-03 2013-03-20 吴江市鼎佳纺织有限公司 Acid dye wastewater treatment method
CN204198556U (en) * 2014-10-14 2015-03-11 浙江钱江纺织印染有限公司 A kind of dyeing and printing sewage treatment system
CN104724853A (en) * 2015-03-08 2015-06-24 益阳市富晖制衣有限公司 Clothing dyeing wastewater treatment process
CN105000702A (en) * 2015-07-20 2015-10-28 湖州吉昌丝绸有限公司 Printing and dyeing industry wastewater discoloration treatment method and novel composite decolorant
CN106007270A (en) * 2016-08-04 2016-10-12 迈邦(北京)环保工程有限公司 Printing and dyeing sewage treatment method and printing and dyeing sewage treatment system
CN206244582U (en) * 2016-08-04 2017-06-13 迈邦(北京)环保工程有限公司 Dyeing and printing sewage processing system
CN107473518A (en) * 2017-09-20 2017-12-15 绍兴鑫广科技有限公司 A kind of dyeing and printing sewage handling process using medicament

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