CN106145430A - A kind of method of Fenton reagent oxidation processes waste water from dyestuff - Google Patents
A kind of method of Fenton reagent oxidation processes waste water from dyestuff Download PDFInfo
- Publication number
- CN106145430A CN106145430A CN201510182361.7A CN201510182361A CN106145430A CN 106145430 A CN106145430 A CN 106145430A CN 201510182361 A CN201510182361 A CN 201510182361A CN 106145430 A CN106145430 A CN 106145430A
- Authority
- CN
- China
- Prior art keywords
- waste water
- dyestuff
- oxidation processes
- add
- fenton
- 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.)
- Pending
Links
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention discloses a kind of method of Fenton reagent oxidation processes waste water from dyestuff, mainly comprise the steps that (1) inorganic matter adsorbs: in waste water from dyestuff, add the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent, and mechanical agitation 30min, then filter, gained filter cake is paper mill base after washing, being available for chromatics paper producer to use, filtrate then carries out lower step process；(2) acidity is adjusted: in sewage, add hydrogen chloride and sodium hydroxide solution, regulate waste water from dyestuff PH to 2～4；(3) Fenton oxidation processes: adds H2O2 10mL/L and the FeSO4 7H2O 4g/L of 30% mass fraction in waste water, is sufficiently stirred for；(4) add sodium hydroxide and fix iron ion: after waiting Fenton's reaction to terminate, add 0.1～0.2mol/L sodium hydroxide solution, iron ion and ferrous ion are formed ferric hydroxide precipitate.It is simple that technical solution of the present invention reduces the COD value in waste water from dyestuff, process and equipment requirements, easy to operate, it is simple to popularization and application.
Description
Background technology
China is textile industry big country, and dyeing total amount occupies first place in the world.The waste water from dyestuff not only water yield is big, complicated component, has that colourity is deep, COD and BOD5 content high, and big containing multiple bio-toxicity, be difficult to the material degraded, biodegradability is poor；Dyestuff in waste water can absorb light, reduces water transparency, a large amount of oxygen consumed in water body, causes water hypoxia, destroy water body self-purification ability, be a class organic wastewater the most difficult to deal with.
The production technology of dyestuff substantially uses salting-out crystallization, the method filtering, cleaning, be dried at present；While obtaining organic dyestuff, dense organic dye waste water can be produced. and chromatics paper manufacturer, but it is that SOLID ORGANIC dyestuff is dissolved in water, it is subsequently adding the inorganic matter such as Kaolin, barium sulfate, it is coated on blank sheet of paper after preparation paper delivery mill base and obtains chromatics paper. during preparing paper mill base, owing to dyestuff cannot be adsorbed onto on inorganic fillings completely, a certain amount of waste water from dyestuff also can be produced. the most both waste dyestuff, also increase the pollution to environment.
Dye waste water treatment method is most commonly used that coagulation decoloration method at present, and its process is to form precipitation by flocculant with dyestuff generation complexation or the chelatropic reaction of residual in water, thus removes dyestuff.Coagulation Method has the drawback that, decolouring and COD remove not thorough, and mud generation amount is big, easily causes secondary pollution；Facility takes up an area big simultaneously, and technique is the longest.
Summary of the invention
Present invention is primarily aimed at and a kind of utilization of can turning one's head the waste water from dyestuff that the producers such as weaving produce again is provided, the waste water from dyestuff that can not recycle is carried out harmless treatment simultaneously, reach discharging standards after reclaiming.
The present invention has been that the step that above-mentioned purpose uses is:
(1) inorganic matter absorption: add the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent in waste water from dyestuff, and mechanical agitation, then filtering, gained filter cake is paper mill base after washing, being available for chromatics paper producer to use, filtrate then carries out lower step process；
(2) adjust acidity: in sewage, add hydrogen chloride and sodium hydroxide solution, regulate waste water from dyestuff PH to 2～4；
(3) Fenton oxidation processes: adds H2O2 and FeSO4 7H2O in waste water, is sufficiently stirred for；
(4) add sodium hydroxide and fix iron ion: after waiting Fenton's reaction to terminate, add 0.1～0.2mol/L sodium hydroxide solution, iron ion and ferrous ion are formed ferric hydroxide precipitate.
When the further setting of the present invention is inorganic matter absorption, after adding the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent, and mechanical agitation 30min, can fully adsorb.
When the further setting of the present invention is described waste water from dyestuff adjustment acidity, optimal PH is 3.
The further setting of the present invention be described Fenton oxidation when processing according to wastewater volume, Fenton reagent use FeSO4 7H2O consumption 4g/L and the H2O2 consumption 10mL/L of 30% mass fraction, and H2O2 to put into optimal number of times be 2～3 times in batches.
When the further setting of the present invention is the process of described Fenton oxidation, oxidation Best Times is 2.5～3 hours.
Use technique scheme, from waste water from dyestuff, paper mill base can not only be recycled, simultaneously by can not the waste water from dyestuff of recycling, carry out further advanced oxidation, iron ion is fixed etc. processes, can reach COD clearance 85～95%, chroma removal rate reaches 85～95%, and process and equipment requirements are simple, easy to operate, it is simple to popularization and application.
Accompanying drawing explanation
Fig. 1 is the process chart of one embodiment of the invention.
Detailed description of the invention
The present invention combines two each and every one embodiments and is described further, but present disclosure is not limited only in embodiment involved content.
The detailed description of the invention of the present invention comprises the following steps:
The first step, inorganic matter adsorbs: add the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent, and mechanical agitation 30min in waste water from dyestuff, then filter, gained filter cake is paper mill base after washing, is available for chromatics paper producer and uses, and filtrate then carries out lower step process；
Second step, adjusts acidity: add hydrogen chloride and sodium hydroxide solution in sewage, regulate waste water from dyestuff PH to 3；
3rd step, Fenton oxidation processes: add FeSO4 7H2O 4g/L and the H2O2 10mL/L of 30% mass fraction in waste water, and H2O2 solution divides 3 inputs, reacts 3 hours.
4th step, adds sodium hydroxide and fixes iron ion: after waiting Fenton's reaction to terminate, add 0.1mol/L sodium hydroxide solution, iron ion and ferrous ion is formed ferric hydroxide precipitate, can remove waste water color, and reaction terminates.
Embodiment of the present invention two comprises the following steps:
The first step, inorganic matter adsorbs: add the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent, and mechanical agitation 30min in waste water from dyestuff, then filter, gained filter cake is paper mill base after washing, is available for chromatics paper producer and uses, and filtrate then carries out lower step process；
Second step, adjusts acidity: add hydrogen chloride and sodium hydroxide solution in sewage, regulate waste water from dyestuff PH to 4；
3rd step, Fenton oxidation processes: add FeSO4 7H2O 4g/L and the H2O2 10mL/L of 30% mass fraction in waste water, and H2O2 solution divides 3 inputs, reacts 2.5 hours.
4th step, adds sodium hydroxide and fixes iron ion: after waiting Fenton's reaction to terminate, add 0.2mol/L sodium hydroxide solution, iron ion and ferrous ion is formed ferric hydroxide precipitate, can remove waste water color, and reaction terminates.
Claims (5)
1. the method for a Fenton reagent oxidation processes waste water from dyestuff, it is characterised in that comprise the steps of
(1) inorganic matter absorption: add the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent, and machinery in waste water from dyestuff
Stirring, then filters, and gained filter cake is paper mill base after washing, is available for chromatics paper producer and uses, and filtrate is then entered
The lower step of row processes；
(2) adjust acidity: in sewage, add hydrogen chloride and sodium hydroxide solution, regulate waste water from dyestuff PH to 2～4；
(3) Fenton oxidation processes: adds H2O2 and FeSO4 7H2O in waste water, is sufficiently stirred for；
(4) add sodium hydroxide and fix iron ion: after waiting Fenton's reaction to terminate, add 0.1～0.2mol/L sodium hydroxide solution,
Iron ion and ferrous ion are formed ferric hydroxide precipitate.
The method of a kind of Fenton reagent oxidation processes waste water from dyestuff the most according to claim 1, is characterized in that: add
After entering the inorganic fillings such as barium sulfate, Kaolin and acidic crosslinking agent, and mechanical agitation 30min, can fully adsorb.
The method of a kind of Fenton reagent oxidation processes waste water from dyestuff the most according to claim 1, is characterized in that: described dye
When material waste water adjusts acid, optimal PH is 3.
The method of a kind of Fenton reagent oxidation processes waste water from dyestuff the most according to claim 1, is characterized in that: described sweet smell
According to wastewater volume during oxidation processes of pausing, Fenton reagent uses the H2O2 of FeSO4 7H2O consumption 4g/L and 30% mass fraction to use
Amount 10mL/L, and H2O2 to put into optimal number of times be 2～3 times in batches.
The method of a kind of Fenton reagent oxidation processes waste water from dyestuff the most according to claim 1, is characterized in that: described sweet smell
During oxidation processes of pausing, oxidation Best Times is 2.5～3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182361.7A CN106145430A (en) | 2015-04-16 | 2015-04-16 | A kind of method of Fenton reagent oxidation processes waste water from dyestuff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510182361.7A CN106145430A (en) | 2015-04-16 | 2015-04-16 | A kind of method of Fenton reagent oxidation processes waste water from dyestuff |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106145430A true CN106145430A (en) | 2016-11-23 |
Family
ID=58057585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510182361.7A Pending CN106145430A (en) | 2015-04-16 | 2015-04-16 | A kind of method of Fenton reagent oxidation processes waste water from dyestuff |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106145430A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572687A (en) * | 2017-08-31 | 2018-01-12 | 新奥环保技术有限公司 | A kind of processing method of dyestuff/coating waste-water |
-
2015
- 2015-04-16 CN CN201510182361.7A patent/CN106145430A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107572687A (en) * | 2017-08-31 | 2018-01-12 | 新奥环保技术有限公司 | A kind of processing method of dyestuff/coating waste-water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108176403B (en) | Co-loaded activated carbon fiber3O4Method for preparing catalytic material | |
| JP2013006174A (en) | Flocculant composition and flocculation method for purifying dye wastewater | |
| CN109133508A (en) | The high-efficient treatment method of textile printing and dyeing wastewater | |
| CN105130854A (en) | Improved H acid production process | |
| CN110801814A (en) | Preparation method of magnetic amino walnut shell biochar novel adsorbent | |
| CN104787983A (en) | Treatment process for synthetic fiberboard production wastewater | |
| CN104829879A (en) | Method for preparing multifunctional rubber assistant by recycling alkali-weight-reduction processing discharged liquor | |
| CN106396308B (en) | Recycling method of residual activated sludge | |
| CN103880211A (en) | Process for resourceful treatment of high-salt wastewater containing magnesium | |
| CN107661750A (en) | A kind of preparation method of waste water from dyestuff compounding adsorbent | |
| CN105565566A (en) | Method for performing Fenton treatment on 6-nitro-1-diazo-2-naphthol-4-sulfonic acid wastewater and coproducing sodium sulfate | |
| CN104193061A (en) | Treatment method for paraquat pesticide wastewater | |
| CN103849455A (en) | Method of reproducing lightly-degraded lubricating oil | |
| CN105254067B (en) | The resource utilization method of advanced treatment of wastewater Fenton process sludge | |
| CN106145430A (en) | A kind of method of Fenton reagent oxidation processes waste water from dyestuff | |
| CN110272340B (en) | Sodium lactate decoloring process and application thereof | |
| CN104926033A (en) | Efficient treatment method for printing and dyeing wastewater | |
| CN100572296C (en) | A kind of method of yeast wastewater advanced treatment | |
| CN111437882A (en) | Preparation method of magnetic composite membrane material doped with silicon-based heteropoly acid | |
| CN108129290B (en) | Method for removing sulfate radical in lactic acid | |
| CN102874944B (en) | Method for treating dye wastewater | |
| CN108503143A (en) | A kind of reactive printing wastewater treatment process | |
| CN204162576U (en) | A kind for the treatment of unit of acid waste water | |
| CN108996637B (en) | Treatment method of wastewater from production of density fiberboard | |
| CN102923903A (en) | Textile printing and dyeing wastewater processing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
|
| WD01 | Invention patent application deemed withdrawn after publication |