CN105836968A - Printing and dyeing wastewater treatment process - Google Patents

Printing and dyeing wastewater treatment process Download PDF

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Publication number
CN105836968A
CN105836968A CN201610319969.4A CN201610319969A CN105836968A CN 105836968 A CN105836968 A CN 105836968A CN 201610319969 A CN201610319969 A CN 201610319969A CN 105836968 A CN105836968 A CN 105836968A
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CN
China
Prior art keywords
waste water
treatment
printing
dyeing waste
dyeing
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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.)
Pending
Application number
CN201610319969.4A
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Chinese (zh)
Inventor
梁明
钟华
张兵
张霞
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Anhui Guo Nengyisheng Environmental Protection Technology Co Ltd
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Anhui Guo Nengyisheng Environmental Protection Technology Co Ltd
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Priority to CN201610319969.4A priority Critical patent/CN105836968A/en
Publication of CN105836968A publication Critical patent/CN105836968A/en
Pending legal-status Critical Current

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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
    • C02F1/52Treatment 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
    • C02F1/5245Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • 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
    • C02F1/76Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • 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
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/308Dyes; Colorants; Fluorescent agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used

Abstract

The invention discloses a printing and dyeing wastewater treatment process. The biodegradability of wastewater can be improved by combining traditional chlorine dioxide treatment with an ozone oxidation and biological treatment technology and oxidizing difficultly-biodegradable large molecular organic matter in wastewater into easily-biodegradable small molecular organic matter, favorable conditions are created for microbial degradation of the organic matter in activated carbon columns, and meanwhile the adsorption load of active carbon is reduced. Ozone oxidation can increase dissolved oxygen in wastewater, favorable conditions are provided for life activities of aerobic microorganisms, and the printing and dyeing wastewater treatment process has the advantages of being high in microbial concentration, high in treatment efficiency, small in sludge output, stable in operation, simple in solid-liquid separation and the like, greatly reduces the treatment costs and has a huge market potential and a broad prospect.

Description

A kind of printing-dyeing waste water treatment process
Technical field
The invention belongs to the production field of bearing, it is more particularly related to a kind of printing and dyeing Waste water treatment process.
Background technology
Dyeing waste water is one of China's harmful, difficult industrial wastewater currently mainly, mainly dirty Dye thing has dyestuff, slurry, auxiliary agent, fiber impurity, finish, soda acid and inorganic salts etc..Its Feature is that wastewater flow rate is big, water quality is complicated, organic concentration is high, difficult for biological degradation, colourity are deep, The features such as change of water quality is fast and irregular, the most especially pollution with dyestuff are the most serious.Its remaining Even if dye component concentration the lowest, will also result in water body light transmittance reduce, cause ecological environment Destruction.After the development of science fabric the most in recent years, the rise of Silk and printing and dyeing The progress of finishing technique, makes PVA slurry, artificial silk alkaline hydrolysis class material, New-type adjuvant etc. be difficult to The organic matter of biochemical degradation enters dyeing waste water in a large number, and its COD concentration is also by original hundreds of millis Gram per liter rises to 2 000~3 000mg/L, so that original biological treatment system COD clearance drops to about 50% from 70%.Traditional processing method type mainly has physics Facture, method of chemical treatment and biological treatment etc..
Summary of the invention
Problem to be solved by this invention is to provide a kind of printing-dyeing waste water treatment process.
To achieve these goals, the technical scheme that the present invention takes is:
A kind of printing-dyeing waste water treatment process, comprises the steps:
(1) fine fack
By dyeing waste water by multilayer fine fack, remove fiber impurity, the sand class mixed in waste water The solid sundries such as material;
(2) regulating reservoir
Dyeing waste water enters in regulating reservoir, is adjusted its water quality and the water yield, it is simple to follow-up place Reason;
(3) reaction precipitation
Will regulation after waste water enter in reaction settling basin, and add coagulant to waste water at Reason, described coagulant is 1.5:10 with the ratio of waste water, and removes precipitation;
(4) anaerobic hydrolysis
Being entered by waste water in PACT pond, the pH in described PACT pond is 7.0~8.0, temperature Being 20~22 DEG C, useless treatment time of water is 15~20min;
(5)ClO2Catalytic oxidation
Waste water is entered ClO2In contact-oxidation pool, and make the ClO of dyeing waste water and 1.76%2 Ratio be 50:1, the reaction time is 20~25min, and reaction temperature is 23~25 DEG C;
(6) ozone contact tank
Again will be through ClO2It is smelly that the waste water of catalytic oxidation enters equipped with WH-G-2 type ozone generator In oxygen contact chamber, and make addition ferrous sulfate make catalyst, ozone generation amount be 100~ 120g/h, pH are 6.9~7.1, and oxidization time is 40~50min;
Preferably, the pH of waste water is adjusted to by described step (2) sulfuric acid and NaOH 7.2~7.4.
Preferably, described step (3) coagulant is the mixing of ferric trichloride, ferric sulfate and PAC Thing.
Preferably, in described step (3), the amount ratio of ferric trichloride, ferric sulfate and PAC is 5:6:3。
Preferably, ferric trichloride, ferric sulfate and the concentration of PAC described in described step (3) It is 10~14g/L.
Preferably, described step (6) be provided with bottom ozone contact tank cocoanut active charcoal 500~ 600kg, and be uniformly distributed at the bottom of pond.
Preferably, in the ozone contact tank of described step (6) concentration of ferrous sulfate be 100~ 120mg/L。
Beneficial effect: the invention discloses a kind of printing-dyeing waste water treatment process, by traditional two Chlorine monoxid processes combined with ozone oxidation and biologic treating technique, by by difficult for biological degradation in waste water Larger molecular organics be oxidized to the small organic molecule of easily biological-degradable, waste water can be improved Biodegradability, creates favorable conditions for microbial degradation organic matter in activated-charcoal column, also subtracts simultaneously The absorption load of light activated carbon;Ozone oxidation can increase the dissolved oxygen in waste water, for aerobic micro-life The vital movement of thing provides favourable condition, and this technique has microorganism concn height, processes effect Rate is high, sludge output is few, stable operation and the advantage such as separation of solid and liquid is simple, greatly reduces process Cost, market potential is huge, has a extensive future.
Detailed description of the invention
Embodiment 1:
A kind of printing-dyeing waste water treatment process, comprises the steps:
(1) fine fack
By dyeing waste water by multilayer fine fack, remove fiber impurity, the sand class mixed in waste water The solid sundries such as material;
(2) regulating reservoir
Dyeing waste water enters in regulating reservoir, is adjusted its water quality and the water yield, and sulfuric acid and hydrogen The pH of waste water is adjusted to 7.2 by sodium oxide molybdena, it is simple to subsequent treatment;
(3) reaction precipitation
Will regulation after waste water enter in reaction settling basin, and add coagulant to waste water at Reason, described coagulant is the mixture of ferric trichloride, ferric sulfate and PAC, and three's concentration is all For 10g/L, amount ratio is 5:6:3, and described coagulant is 1.5:10 with the ratio of waste water, and Remove precipitation;
(4) anaerobic hydrolysis
Being entered by waste water in PACT pond, the pH in described PACT pond is 7.0, and temperature is 20 DEG C, Useless treatment time of water is 15min;
(5)ClO2Catalytic oxidation
Waste water is entered ClO2In contact-oxidation pool, and make the ClO of dyeing waste water and 1.76%2 Ratio be 50:1, the reaction time is 20min, and reaction temperature is 23 DEG C;
(6) ozone contact tank
Again will be through ClO2It is smelly that the waste water of catalytic oxidation enters equipped with WH-G-2 type ozone generator In oxygen contact chamber, and make addition ferrous sulfate make catalyst, and make the concentration of ferrous sulfate be 100mg/L, ozone generation amount be 100g/h, pH be 6.9, oxidization time is 40min, institute State and bottom ozone contact tank, be provided with cocoanut active charcoal 500kg, and be uniformly distributed at the bottom of pond.
Embodiment 2:
A kind of printing-dyeing waste water treatment process, comprises the steps:
(1) fine fack
By dyeing waste water by multilayer fine fack, remove fiber impurity, the sand class mixed in waste water The solid sundries such as material;
(2) regulating reservoir
Dyeing waste water enters in regulating reservoir, is adjusted its water quality and the water yield, and sulfuric acid and hydrogen The pH of waste water is adjusted to 7.3 by sodium oxide molybdena, it is simple to subsequent treatment;
(3) reaction precipitation
Will regulation after waste water enter in reaction settling basin, and add coagulant to waste water at Reason, described coagulant is the mixture of ferric trichloride, ferric sulfate and PAC, and three's concentration is all For 12g/L, amount ratio is 5:6:3, and described coagulant is 1.5:10 with the ratio of waste water, and Remove precipitation;
(4) anaerobic hydrolysis
Being entered by waste water in PACT pond, the pH in described PACT pond is 7.5, and temperature is 21 DEG C, Useless treatment time of water is 17.5min;
(5)ClO2Catalytic oxidation
Waste water is entered ClO2In contact-oxidation pool, and make the ClO of dyeing waste water and 1.76%2 Ratio be 50:1, the reaction time is 22.5min, and reaction temperature is 24 DEG C;
(6) ozone contact tank
Again will be through ClO2It is smelly that the waste water of catalytic oxidation enters equipped with WH-G-2 type ozone generator In oxygen contact chamber, and make addition ferrous sulfate make catalyst, and make the concentration of ferrous sulfate be 110mg/L, ozone generation amount be 110g/h, pH be 7.0, oxidization time is 45min, institute State and bottom ozone contact tank, be provided with cocoanut active charcoal 550kg, and be uniformly distributed at the bottom of pond.
Embodiment 3:
A kind of printing-dyeing waste water treatment process, comprises the steps:
(1) fine fack
By dyeing waste water by multilayer fine fack, remove fiber impurity, the sand class mixed in waste water The solid sundries such as material;
(2) regulating reservoir
Dyeing waste water enters in regulating reservoir, is adjusted its water quality and the water yield, and sulfuric acid and hydrogen The pH of waste water is adjusted to 7.4 by sodium oxide molybdena, it is simple to subsequent treatment;
(3) reaction precipitation
Will regulation after waste water enter in reaction settling basin, and add coagulant to waste water at Reason, described coagulant is the mixture of ferric trichloride, ferric sulfate and PAC, and three's concentration is all For 14g/L, amount ratio is 5:6:3, and described coagulant is 1.5:10 with the ratio of waste water, and Remove precipitation;
(4) anaerobic hydrolysis
Being entered by waste water in PACT pond, the pH in described PACT pond is 8.0, and temperature is 22 DEG C, Useless treatment time of water is 20min;
(5)ClO2Catalytic oxidation
Waste water is entered ClO2In contact-oxidation pool, and make the ClO of dyeing waste water and 1.76%2 Ratio be 50:1, the reaction time is 25min, and reaction temperature is 25 DEG C;
(6) ozone contact tank
Again will be through ClO2It is smelly that the waste water of catalytic oxidation enters equipped with WH-G-2 type ozone generator In oxygen contact chamber, and make addition ferrous sulfate make catalyst, and make the concentration of ferrous sulfate be 120mg/L, ozone generation amount be 120g/h, pH be 7.1, oxidization time is 50min, institute State and bottom ozone contact tank, be provided with cocoanut active charcoal 600kg, and be uniformly distributed at the bottom of pond.
After process above processes, taking out sample respectively, measurement result is as follows:
Detection project Embodiment 1 Embodiment 2 Embodiment 3 Prior art index
Colourity 9 8 8 10
COD 31 30 31
TP 0.4 0.2 0.3
Can draw according to above table data, the dyeing waste water processed when embodiment 2 parameter Chromaticity removing effect is good, can meet the row of " urban wastewater treatment firm discharge standard " 1 grade of A Put standard, and the removal effect of COD and TP is also above prior art index, have wide Market prospects.
The invention discloses a kind of printing-dyeing waste water treatment process, by traditional chlorine dioxide treatment Combined with ozone oxidation and biologic treating technique, by having the big molecule of difficult for biological degradation in waste water Machine thing is oxidized to the small organic molecule of easily biological-degradable, can improve the biodegradability of waste water, Create favorable conditions for microbial degradation organic matter in activated-charcoal column, also alleviate activated carbon simultaneously Absorption load;Ozone oxidation can increase the dissolved oxygen in waste water, and the life for aerobic microbiological is lived Moving and provide favourable condition, this technique has microorganism concn height, treatment effeciency is high, produce mud The advantages such as amount is less, stable operation and separation of solid and liquid be simple, greatly reduce processing cost, market Have a high potential, have a extensive future.
The foregoing is only embodiments of the invention, not thereby limit the patent model of the present invention Enclose, every equivalent structure utilizing description of the invention content to be made or equivalence flow process conversion, or Directly or indirectly it is used in other relevant technical fields, is the most in like manner included in the patent of the present invention In protection domain.

Claims (7)

1. a printing-dyeing waste water treatment process, it is characterised in that comprise the steps:
(1) fine fack
By dyeing waste water by solid sundries such as multilayer fine fack, the fiber impurity mixed in removal waste water, sand class materials;
(2) regulating reservoir
Dyeing waste water enters in regulating reservoir, is adjusted its water quality and the water yield, it is simple to subsequent treatment;
(3) reaction precipitation
Being entered in reaction settling basin by waste water after regulation, and add coagulant and process waste water, described coagulant is 1.5:10 with the ratio of waste water, and removes precipitation;
(4) anaerobic hydrolysis
Being entered by waste water in PACT pond, the pH in described PACT pond is 7.0~8.0, and temperature is 20~22 DEG C, and useless treatment time of water is 15~20min;
(5)ClO2Catalytic oxidation
Waste water is entered ClO2In contact-oxidation pool, and make the ClO of dyeing waste water and 1.76%2Ratio be 50:1, the reaction time is 20~25min, and reaction temperature is 23~25 DEG C;
(6) ozone contact tank
Again will be through ClO2The waste water of catalytic oxidation enters in the ozone contact tank equipped with WH-G-2 type ozone generator, and makes addition ferrous sulfate make catalyst, and ozone generation amount is 100~120g/h, and pH is 6.9~7.1, and oxidization time is 40~50min.
2. according to a kind of printing-dyeing waste water treatment process described in claim 1, it is characterised in that: the pH of waste water is adjusted to 7.2~7.4 by described step (2) sulfuric acid and NaOH.
3. according to a kind of printing-dyeing waste water treatment process described in claim 1, it is characterised in that: described step (3) coagulant is the mixture of ferric trichloride, ferric sulfate and PAC.
4. according to a kind of printing-dyeing waste water treatment process described in claim 3, it is characterised in that: in described step (3), the amount ratio of ferric trichloride, ferric sulfate and PAC is 5:6:3.
5. according to a kind of printing-dyeing waste water treatment process described in claim 1, it is characterised in that: described in described step (3), the concentration of ferric trichloride, ferric sulfate and PAC is 10~14g/L.
6. according to a kind of printing-dyeing waste water treatment process described in claim 1, it is characterised in that: described step (6) is provided with cocoanut active charcoal 500~600kg bottom ozone contact tank, and is uniformly distributed at the bottom of pond.
7. according to a kind of printing-dyeing waste water treatment process described in claim 1, it is characterised in that: in the ozone contact tank of described step (6), the concentration of ferrous sulfate is 100~120mg/L.
CN201610319969.4A 2016-05-12 2016-05-12 Printing and dyeing wastewater treatment process Pending CN105836968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106630396A (en) * 2016-11-23 2017-05-10 武汉轻工大学 Simple process for treating wastewater containing various dyes
CN107434332A (en) * 2017-07-03 2017-12-05 安徽国能亿盛环保科技有限公司 A kind of technique for treating industrial wastewater
CN108658392A (en) * 2018-06-11 2018-10-16 河南新野纺织股份有限公司 A kind of high-tech environmental protection printing-dyeing waste water treatment process

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106630396A (en) * 2016-11-23 2017-05-10 武汉轻工大学 Simple process for treating wastewater containing various dyes
CN107434332A (en) * 2017-07-03 2017-12-05 安徽国能亿盛环保科技有限公司 A kind of technique for treating industrial wastewater
CN108658392A (en) * 2018-06-11 2018-10-16 河南新野纺织股份有限公司 A kind of high-tech environmental protection printing-dyeing waste water treatment process

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Application publication date: 20160810