CN87101908A - Absorption-coagulation or flotation treatment of dyeing and printing - Google Patents
Absorption-coagulation or flotation treatment of dyeing and printing Download PDFInfo
- Publication number
- CN87101908A CN87101908A CN 87101908 CN87101908A CN87101908A CN 87101908 A CN87101908 A CN 87101908A CN 87101908 CN87101908 CN 87101908 CN 87101908 A CN87101908 A CN 87101908A CN 87101908 A CN87101908 A CN 87101908A
- Authority
- CN
- China
- Prior art keywords
- coal
- waste water
- ash
- coal dust
- slag
- 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
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Relevant dyeing waste water and part dye wastewater treatment technology, coal (coal dust), boiler flue dust and industry and civilian coal cinder adsorpting decoloring---chemical coagulation (or flotation) the tandem process method of utilization through pulverizing, coal dust has certain adsorption bleaching ability to dyeing waste water, waste water from dyestuff, use the afterfire value not reduce, and meet the trend of coal burning technical development.This processing method not only can make wastewater treatment reach emission standard, and can save chemical coagulator, is all good novel procesies of low, the easy popularization of a kind of cost, economy and society benefit.
Description
The present invention relates to control of environmental pollution technology, particularly handle the technology and the method for wastewater of dyeing and printing industry.
Pollution substance in the wastewater of dyeing and printing industry mainly is excess dye, chemical assistant and tensio-active agent, the slurry in producing etc.Existing treatment process has chemical coagulation, biochemical process, activated carbon method and the gentle float glass process of ozone method etc.Chemical coagulation process is good to coating, water-insoluble vat dyes, the anionic dyestuff removal effect that is suspended state in the waste water, but to water-soluble dye, bad as matching stain, reactive dyestuffs, cationic dyestuff removal effect, to water-soluble, be the nonionic pollutent again, poorer as treatment effects such as tensio-active agent, slurries; Constantly the occurring of reactive monoazo dyestuffs handles biochemical process and meets difficulty; Activated carbon method has in various degree decontamination effect improving to water-soluble dye, and is obvious to organic composition decontamination effect improvings such as water miscible tensio-active agent, chemical assistants, and to non-water-soluble dyestuff, too high as thioxine dyes, dispersed dye poor removal effect and cost.J.J.PORTER has invented the method for the treatment of dyeing and printing of gac-chemical coagulation tandem process.(J.J.PORTER:Pilot Studies With Activated Carbon, Joint ASME/EPA Reuse ﹠amp; Treatment of Waste Water General Industry ﹠amp; Food Processing Symposium, 1972.) " gac research-commonly industrial wastewater and food industrial wastewater are handled collection of thesis ", 1972.Proposed two kinds of different tandem process flocculation agent dosage and coagulate sludge amount have been had very big difference, for chemical coagulation-charcoal absorption, the aluminium salt that adds 200PPm during coagulation, and with gac-chemical coagulation process, the aluminium salt amount that adds during coagulation is 30～50PPm, the coagulate sludge amount has reduced 75～85%, has reduced the coagulating agent consumption, but cost still dislikes too high.
Since the seventies, begin both at home and abroad to notice that boiler flue dust, industry and domestic burners coal ash, slag have certain adsorption bleaching ability, but the large usage quantity of ash, slag, list not only is difficult to (emission standard) up to standard with ash, slag adsorption bleaching, and increases lime-ash freight charges and sludge treatment difficulty.At present, the range of product complicated and changeable of each medium and small printing and dyeing mill, dye species, complete processing cause various waste water to produce, and chemical oxygen demand are at 500～1000mg/l(COD
Cr) even higher, the single treatment process of such waste water is difficult to reach emission standard.
Purpose of the present invention proposes a kind of low cost, easy, the easy printing-dyeing waste water treatment process method of processing of technology in order to solve above-mentioned all problems.
Technical solution of the present invention is: adopt two processing methodes to handle waste water, in order to solve the big problem of lime-ash consumption, utilize coal dust (common fire coal) to make adsorption decolouriser through pulverizing, also can be, cinder is used in combination or select one or more with coal ash (industrial flue ash); For solving the problem that adsorption bleaching still can not be up to standard, recycling chemical coagulation or floatation process method add a spot of chemical coagulator and can reach emission standard.(look different the chemical coagulator that waste water adds difference and various dose.) if the decolouring sorptive power of coal dust, ash, slag is up to standard, then can save chemical coagulation or floatation process.
Technology of the present invention and method are used the coal of pulverizing, be used in combination or select to use coal ash, cinder waste water elder generation adsorption bleaching can be reached the similar effect with gac, above-mentioned three kinds of materials have different decontamination effect improvings to water-soluble dye, organic components such as water soluble surfactant active, chemical assistant are purified obviously, poor slightly to water-insoluble dyestuff removal effect.Ash, slag are that a kind of waste does not influence further utilizing again of it after as adsorption bleaching, and utilize the coal dust adsorption bleaching, just in time coordinate mutually with present boiler combustion technology development trend-be the efficient burning and the control fuel contamination-developing the research and the application of moulded coal, fine coal, coal water slurry of coal, and obtained actual effect.The used coal dust of adsorption bleaching not only makes full use of existing resource and handles waste water, and can improve the combustion value of coal, has the positively effect that serves multiple.Utilize method of the present invention not only can handle dyeing and printing sewage, can also the treating part waste water from dyestuff.Handle waste water with this law than chemical coagulation process or flotation process and save flocculation agent, auxiliary agent, reduced flocculation sludge quantity, particularly coal dust, ash simultaneously, each printing and dyeing enterprise of slag all has, and is suitable for promoting the use of, and is particularly suited for medium and small sized enterprises.
The present invention is further described below in conjunction with process flow sheet with by embodiment:
1. adsorption bleaching
Waste water is earlier through coal dust, ash, slag adsorption bleaching, partly or entirely waste dyestuff, partly or entirely organism can be removed in the auxiliary agent, coal dust absorption should be carried out separately, ash, slag can mix or use separately, coal dust should not mix use with grey, slag.Also can be only with ash, slag absorption or with wherein a kind of, or else with or adsorb with coal dust.
Absorption can be adopted the mode that ash, slag or coal dust is dropped into mixing and absorption in the waste water, and this method slag should be pulverized, and ash can not pulverized.Carry out adsorption bleaching for ash, the also available filling type of slag.
Coal dust, ash, solid impurity particle degree are influential to the adsorption bleaching effect, and a degree is little, and the adsorption bleaching effect improves.The granularity of coal dust should carefully arrive and can cross 80 orders or thinner sieve during throw-in type absorption, should take all factors into consideration the factors such as character, cost and coal amount of waste water and determine grinding particle size.
Coal dust, ash, slag adsorption bleaching effect are relevant with composition in the waste water, water miscible tensio-active agent, and it is obvious that organic compositions such as chemical assistant are cleaned effect, and water-soluble dye is had decontamination effect improving in various degree, but to water-insoluble dyestuff poor removal effect.
Coal dust, ash, slag are relevant to above two kinds of waste water adsorption saturation times and waste water composition, potential of hydrogen, suction type (static with dynamically).To Static Adsorption, saturation time is more than 10 hours, but 1-2 hour, can reach 95% saturated degree of adsorption, desirable about 30 minutes of actual process.
Coal dust, ash, slag adsorb should be under nearly neutrallty condition, or under the original potential of hydrogen condition with regard to waste water, like this, can bring into play its good adsorption decoloration performance, avoid some objectionable constituent in coal dust, ash, the slag simultaneously in the saving of acid, stripping and acid under the alkali condition, alkali.
When using ash, slag adsorption cleaning waste water, consider to save cost, can not carry out ash, ground-slag is broken, adopts the filling type continuous adsorption to make full use of the lime-ash adsorptive power, under above processing condition, as follows to composite waste, coal dust, ash, the slag adsorption bleaching ability of common dyeing industry:
Boiler flue dust (further pulverize) or a close coal dust of degree with it: waste water=1: 100～150 o'clock.
COD
CrClearance can reach 60～70%, and percent of decolourization reaches 80～90%, 10～30 minutes duration of contact.
Slag (pulverize): water=1: 10～15 o'clock
COD
CrClearance can reach 50～60%, and percent of decolourization can reach 70～90%, 10～30 minutes duration of contact.
To indivedual waste water, especially waste water from dyestuff may be below or above this value, and in general, flue dust and the pulverized coal consumption that granularity is close with it are not less than 0.5% wastewater flow rate, and the slag consumption of Fen Suiing should not be not less than 5% wastewater flow rate.
2. chemical coagulation (or flotation):
Waste water is behind ash, slag or coal dust adsorption bleaching, and the excess dye that part can not be removed, auxiliary agent etc. are removed through chemical coagulation or flotation again.
Chemical coagulation can adopt various coagulating agent, should take all factors into consideration according to concrete waste water quality, sludge settling property and adsorption bleaching effect and total cost.
For some be easy to by coal dust, ash, slag adsorption bleaching handle can be up to standard waste water, even can be without chemical coagulation.
For by the bad waste water of adsorption bleaching treatment effect, can strengthen flocculation dosage, for example use aluminium salt and molysite, consumption can reach 100～200PPm, and (use coagulation process separately, consumption is up to 400～500PPm).
Chemical coagulation can carry out in the container separately in addition, particularly to filling out a formula adsorption bleaching craft, to coal dust, ash, slag (pulverizing) being dropped into the mixing and absorption decolouring mode of waste water with employing, chemical coagulation can carry out in same container, but must answer usually about 30 minutes fully carrying out the chemical coagulation operation again behind the nearly saturation time of adsorption bleaching.To with the waste water behind the coal dust adsorption bleaching, when in same equipment, carrying out chemical coagulation, do not want peracid and do not cross alkali.Flocculation agent can be selected alum, ferrous sulfate, aluminium chlorohydroxide etc. for use.
Waste water behind the adsorption bleaching, but also air supporting is handled, and should select suitable chemical agent and processing parameter according to water quality situation behind the adsorption bleaching, is good with alum or aluminium chlorohydroxide.
More about about 1/2 than saving consumptions such as coagulating agent and auxiliary agent with chemical coagulation or flotation and chemical coagulation or flotation-coal dust, ash, slag absorbing process separately with coal dust or ash, slag-chemical coagulation or flotation combination process, sludge quantity reduces more than 50%.
Through absorption-chemical coagulation or flotation combination process, for dyeing waste water, COD
CrClearance reaches more than 90%, and percent of decolourization reaches more than 95%.
The easily mummification of coal dust absorption back can be sneaked in the coal usefulness again after the mummification, or not mummification production of shaped coal etc.
Contain organism about 30% in the mud approximately, can mix again with coal and use.
Behind ash, the slag adsorption bleaching, under field conditions (factors), adsorbate is difficult for stripping, does not influence it and utilizes.
Accompanying drawing is a process flow diagram:
(7) flow into (pumping into) waste water storage pond or equalizing tank (1) for waste water among Fig. 1,2,4, through (2) adsorption bleaching, (2) be ash or slag adsorption tank, (2 ') are ash, slag adsorption column, again through coal dust absorption or with chemical coagulation pond (3), enter the precipitate and separate pond again, (6) are that mud or mud and coal dust can be for burnings, and flow out for handling back water (5).
Waste water among Fig. 3 (7) is through (1) to (2), and (2) are coal dust absorption-chemical coagulation pond, or grey, slag absorption-chemical coagulation pond, and (4) are the precipitate and separate pond.
Fig. 5 is an absorption-air supporting schematic flow sheet, and waste water (7) warp (1) is to (2 "), (2 ") are coal ash or ash, slag adsorption column or fine breeze adsorption tank, and (4 ') are air flotation pool.
As certain bleaching and dyeing wastewater, dyestuff is with sulfuration, activity, and substantive dyestuff is main, each analog assistant of small cations dye well and slurry wastewater COD
Cr500～700mg/l, about 500 times of colourities.
Adopt Fig. 1 technical process.
Waste water by without the Industrial Boiler slag of pulverizing, adsorbs slag: water=1: 25(kg:l) to fill column earlier, adsorption bleaching processed waste water water inlet absorption-chemical coagulation groove, through coal dust (100 order) absorption, pulverized coal consumption is heavy for the 1/100(coal dust: water) adsorption bleaching was used Al after 30 minutes earlier
2(SO
4)
318H
2O(alum) carry out chemical coagulation, transfer basicity, CaO consumption 80mg/l, Al with CaO
2(SO
4)
318H
2O consumption 150mg/l.
Treatment effect such as following table:
Clearance (%) after the project processing pre-treatment
PH 8～9 7～8
COD
cr500～700 50～80 -90%
Colourity (doubly) 500 20～30-94%
The same waste water is handled with chemical coagulation separately, when adopting Al
2(SO
4)
318H
2O adds 600mg/lCaO consumption 200mg/l, result
Clearance (%) after the project processing pre-treatment
PH 8～9 7～8
COD
cr500～700 200～250 60～65%
Colourity (doubly) 500 70～100 80～85%
Handle back, mud carefully, free settling not
Use FeSO instead
47H
2O makes flocculation agent, consumption 500mg/l, and CaO transfers basicity 200mg/l, after the processing, uses H
2SO
4Transfer PH to 7～9.
Result:
Clearance (%) after the project processing pre-treatment
PH 8～9 7～9(H
2SO
4Reconcile)
COD
cr500～700 200～220 65～70%
Colourity (doubly) 500 70～100 80～85%
Handle back mud free settling, but sludge quantity is big.
Claims (6)
1, a kind of treatment process method of dyeing waste water is characterized in that forming by two ones:
I waste water earlier carries out adsorption bleaching through one or more combinations of coal dust or coal ash, three kinds of materials of slag, and coal ash, slag can mix use.
Ii is after chemical coagulation or flotation are handled, or i can save ii can satisfy emission standard the time.
2, by the method for claim 1, it is characterized in that the granularity of coal dust is crossed 80 orders or thinner sieve, the consumption of coal dust or ash is more than 0.5%, and the cinder consumption is more than 5% wastewater flow rate.
3, by the method for claim 1 or 2, it is characterized in that adsorption bleaching can adopt filling type or drop into mixing and absorption mode in the waste water, the filling type adsorption bleaching carries out chemical coagulation or flotation with container in addition, and the throw-in type adsorption bleaching can be at same container or carried out chemical coagulation or flotation with container in addition.
4,, it is characterized in that adsorption bleaching carries out under nearly neutrallty condition by the processing method of claim 1 or 2.
5, by the processing method of claim 1 or 2, it is characterized in that chemical coagulator can be with molysite or aluminium salt, as ferrous sulfate, alum, aluminium chlorohydroxide etc., input alum or aluminium chlorohydroxide are good during flotation.
6, by the processing method of claim 1 or 2, it is characterized in that, adsorption bleaching with after coal dust or coal dust, mud mixture can do moulded coal, coal water slurry or sneak into and make fuel in the coal, ash, slag are recycling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101908 CN87101908A (en) | 1987-03-10 | 1987-03-10 | Absorption-coagulation or flotation treatment of dyeing and printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101908 CN87101908A (en) | 1987-03-10 | 1987-03-10 | Absorption-coagulation or flotation treatment of dyeing and printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87101908A true CN87101908A (en) | 1987-12-02 |
Family
ID=4813677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101908 Pending CN87101908A (en) | 1987-03-10 | 1987-03-10 | Absorption-coagulation or flotation treatment of dyeing and printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87101908A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062544C (en) * | 1995-06-27 | 2001-02-28 | 张宇舟 | Method and equipment for making manure by sewage treatment |
| CN100421780C (en) * | 2006-08-26 | 2008-10-01 | 陈宜平 | Modified coal slag adsorbent and method for preparing same |
| CN101905930A (en) * | 2010-06-28 | 2010-12-08 | 胜利油田胜利勘察设计研究院有限公司 | Selective adsorbing and air-floating treatment method and device for sewage from oilfields |
| CN103332821A (en) * | 2013-06-21 | 2013-10-02 | 浙江吉华集团股份有限公司 | Method for treating waste water containing sulfuric acid in production process of dyes and intermediates |
| CN103991919A (en) * | 2014-05-19 | 2014-08-20 | 中国矿业大学 | Method for utilizing pulverized coal as coal liquefaction wastewater and printing and dyeing wastewater adsorbent |
| CN104496085A (en) * | 2014-12-30 | 2015-04-08 | 中国矿业大学 | Deep treatment technology for petrochemical wastewater |
| CN104609606A (en) * | 2015-02-03 | 2015-05-13 | 周勇胜 | Method for pretreating petrochemical wastewater |
| CN105170088A (en) * | 2015-10-13 | 2015-12-23 | 中国石油化工股份有限公司 | Method for preparing oil-containing sludge-based active carbon water treatment agent |
| CN105669941A (en) * | 2016-01-22 | 2016-06-15 | 江苏大学 | Preparation method and application of coal-based modified polymer foaming material |
| CN108793481A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | One kind containing Cu2+/Pb2+With the smelting wastewater and dyeing waste water mixed processing method of sulfuric acid |
| CN108793482A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | One kind containing Cu2+With the smelting wastewater and dyeing waste water combined treatment process of sulfuric acid |
| CN108793480A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | One kind containing Hg2+Acidic industrial effluent and dyeing waste water combination treatment method |
| CN108793507A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | A kind of smelting wastewater of leaded zinc and dyeing waste water combination treatment method |
-
1987
- 1987-03-10 CN CN 87101908 patent/CN87101908A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062544C (en) * | 1995-06-27 | 2001-02-28 | 张宇舟 | Method and equipment for making manure by sewage treatment |
| CN100421780C (en) * | 2006-08-26 | 2008-10-01 | 陈宜平 | Modified coal slag adsorbent and method for preparing same |
| CN101905930A (en) * | 2010-06-28 | 2010-12-08 | 胜利油田胜利勘察设计研究院有限公司 | Selective adsorbing and air-floating treatment method and device for sewage from oilfields |
| CN103332821A (en) * | 2013-06-21 | 2013-10-02 | 浙江吉华集团股份有限公司 | Method for treating waste water containing sulfuric acid in production process of dyes and intermediates |
| CN103991919B (en) * | 2014-05-19 | 2016-03-16 | 中国矿业大学 | A kind of coal dust makes the using method of gelatin liquefaction waste water and dyeing waste water sorbent material |
| CN103991919A (en) * | 2014-05-19 | 2014-08-20 | 中国矿业大学 | Method for utilizing pulverized coal as coal liquefaction wastewater and printing and dyeing wastewater adsorbent |
| CN104496085A (en) * | 2014-12-30 | 2015-04-08 | 中国矿业大学 | Deep treatment technology for petrochemical wastewater |
| CN104609606A (en) * | 2015-02-03 | 2015-05-13 | 周勇胜 | Method for pretreating petrochemical wastewater |
| CN105170088A (en) * | 2015-10-13 | 2015-12-23 | 中国石油化工股份有限公司 | Method for preparing oil-containing sludge-based active carbon water treatment agent |
| CN105669941A (en) * | 2016-01-22 | 2016-06-15 | 江苏大学 | Preparation method and application of coal-based modified polymer foaming material |
| CN105669941B (en) * | 2016-01-22 | 2018-10-09 | 江苏大学 | A kind of preparation method and applications of coal base modified macromolecule foaming material |
| CN108793481A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | One kind containing Cu2+/Pb2+With the smelting wastewater and dyeing waste water mixed processing method of sulfuric acid |
| CN108793482A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | One kind containing Cu2+With the smelting wastewater and dyeing waste water combined treatment process of sulfuric acid |
| CN108793480A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | One kind containing Hg2+Acidic industrial effluent and dyeing waste water combination treatment method |
| CN108793507A (en) * | 2018-07-13 | 2018-11-13 | 中国矿业大学 | A kind of smelting wastewater of leaded zinc and dyeing waste water combination treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN87101908A (en) | Absorption-coagulation or flotation treatment of dyeing and printing | |
| CN1227192A (en) | Compound coagulant for waste water treatment and its usage | |
| CN102145952B (en) | Method for treating fracturing reverse drainage liquid of petroleum exploitation by microwave rapid catalysis | |
| US10287183B2 (en) | Electroplating wastewater treatment process using red mud, straw and seawater | |
| CN101774690A (en) | Device for improving AAO treated dyeing wastewater and method thereof | |
| CN103991919B (en) | A kind of coal dust makes the using method of gelatin liquefaction waste water and dyeing waste water sorbent material | |
| CN108821473A (en) | A kind of dyeing and printing sewage treatment process | |
| CN101700949B (en) | Waste leachate purification process method | |
| CN1175927C (en) | Modified adsorbent of fly ash and method for treating waste water by using absorbent | |
| CN111606519A (en) | Advanced treatment method for electroplating wastewater | |
| CN110963634A (en) | Advanced treatment method for papermaking wastewater | |
| CN1817803A (en) | Safety and ecological natural built-up flocculant, its production and use | |
| CN1075698A (en) | Bio-active coal filtering material and application thereof | |
| CN101134614B (en) | Method for treating town domestic wastewater by modified coal ash and flocculating agent | |
| CN102557211B (en) | Multi-functional composite bioflocculant for wastewater treatment | |
| CN105016569A (en) | Processing system and method for cold rolling reverse osmosis strong brine | |
| CN1785827A (en) | Treatment method of domestic sewage | |
| CN1865161A (en) | Electroplating waste water disposal method | |
| CN110156254A (en) | A kind of autoclave condensation water processing reuse method again | |
| CN107021582A (en) | A kind of percolate pretreating process | |
| CN108314179A (en) | Strengthen the method for activated sludge removal sewerage nitrogen and phosphor and toxic organic compound difficult to degrade | |
| KR100292975B1 (en) | Coagulant composition manufactured with fly ash from power plant using coal | |
| CN1209293C (en) | Sewage treating agent and its prepn and usage | |
| CN102641729A (en) | Modification and preparation method for preparing high-effective azo dye bioadsorbent and treatment technique thereof for azo dye wastewater | |
| CN113526636A (en) | Efficient sewage treatment medicament and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |