CN105601029A - Process for printing and dyeing wastewater treatment - Google Patents
Process for printing and dyeing wastewater treatment Download PDFInfo
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- CN105601029A CN105601029A CN201510951689.0A CN201510951689A CN105601029A CN 105601029 A CN105601029 A CN 105601029A CN 201510951689 A CN201510951689 A CN 201510951689A CN 105601029 A CN105601029 A CN 105601029A
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- waste water
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004043 dyeing Methods 0.000 title claims abstract description 51
- 230000008569 process Effects 0.000 title claims abstract description 47
- 238000007639 printing Methods 0.000 title abstract description 14
- 238000004065 wastewater treatment Methods 0.000 title abstract description 7
- 239000002351 wastewater Substances 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000001556 precipitation Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000005273 aeration Methods 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 8
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 8
- 230000015271 coagulation Effects 0.000 claims abstract description 7
- 238000005345 coagulation Methods 0.000 claims abstract description 7
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 238000000746 purification Methods 0.000 claims description 21
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 21
- 239000004411 aluminium Substances 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 10
- 239000012295 chemical reaction liquid Substances 0.000 claims description 10
- 239000000376 reactant Substances 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 10
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 9
- 239000013049 sediment Substances 0.000 claims description 8
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 6
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 235000019270 ammonium chloride Nutrition 0.000 claims description 5
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 5
- 238000007865 diluting Methods 0.000 claims description 5
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 5
- 239000003595 mist Substances 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 9
- 239000010865 sewage Substances 0.000 abstract description 7
- 238000005188 flotation Methods 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000012629 purifying agent Substances 0.000 abstract 3
- 238000007664 blowing Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000000855 fermentation Methods 0.000 abstract 1
- 230000004151 fermentation Effects 0.000 abstract 1
- 239000010908 plant waste Substances 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 16
- 239000000975 dye Substances 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 7
- 239000003513 alkali Substances 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000007859 condensation product Substances 0.000 description 3
- 239000007857 degradation product Substances 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000235342 Saccharomycetes Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000001399 aluminium compounds Chemical class 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009967 direct dyeing Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ion Chemical class 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention discloses a process for printing and dyeing wastewater treatment, and the process is as follows: preparing a printing and dyeing wastewater purifying agent, adding anaerobic bacteria into printing and dyeing wastewater for airtight fermentation for 3 days, pouring the purifying agent into an air flotation coagulation reaction tank by a chemical dosing device, using a submerged porous diffuser to fill air into the wastewater, blowing air for aeration for 6 hours, precipitating, using a reverse osmosis membrane to treat the wastewater after the precipitation treatment to obtain clear wastewater in line with emission requirements, and discharging the clear wastewater out by a bottom shunting clean water tank. By combined use of physical, chemical and biological means for printing and dyeing wastewater treatment, the printing and dyeing wastewater treatment effect is good, solid waste, which is precipitated from aluminum profile production plant sewage, is used as a raw material for producing the printing and dyeing wastewater treatment purifying agent, the effect of low production cost and waste utilization can be achieved, aluminum profile production plant waste residue treatment expense is reduced, and treatment cost is reduced.
Description
Technical field
The invention belongs to technical field of waste water processing, relate in particular to a kind of processing of dyeing waste waterTechnique.
Background technology
Textile printing and dyeing industry is that China's water consumption is large, the larger industrial department of wastewater discharge itOne, and dyeing waste water has, biochemical oxygen demand (BOD) is high, colourity is high, pH value changes feature greatly,In Dyeing treatment agent conventional coagulant mainly contain inorganic many metallic salts (as:Aluminium salt, molysite) and high molecular polymer, wherein aluminum salt mainly contains: aluminum sulfate,Alum and aluminium polychloride. Iron salt coagulant mainly contains: ferrous sulfate, ferric trichloride and poly-Close ferric sulfate. Above product has the advantages that use cost is high, consumption is large, especially adopts ironSalt is processed coagulant as textile printing and dyeing wastewater, because there being certain corrosivity, establishes processingStandby having a certain impact, molysite class coagulant is easily deepened chroma in waste water, after treatment dischargeTail water in colourity and contained iron ion be also unfavorable for the production reuse of printing and dyeing. Dyeing waste water containsA large amount of organic pollutions, enters water body and will consume dissolved oxygen, destroys Ecology balance, dangerAnd fish and other hydrobiological existence. Demersal organic matter, can be because of anaerobic digestionAnd produce the pernicious gases such as hydrogen sulfide, worsen environment. The color and luster of dyeing waste water is dark, serious shadowRing receiving water body outward appearance. Causing the coloured principal element of water body is dyestuff. Dye in the whole world at presentMaterial year total growth more than 600,000 tons, wherein more than 50% for textile dyeing; AndIn fabrics printing and dyeing processing, there is 10%～20% dyestuff to discharge as refuse. Printing and dyeing are uselessThe colourity of water is particularly serious, is difficult to remove with general biochemical process. Coloured water body also can affectDay optical transmission, is unfavorable for the growth of aquatic organism.
China, through the development of two more than ten years, has become the big producing country of world aluminum section bar, wideThe most concentrated region of aluminium enterprise of Dong Shi China, industry size is large, and annual capacity exceedes 200Many ten thousand tons, the surface treatment production process of aluminium section bar need to consume a large amount of water resources, whereinThe operation such as alkaline etching, pickling all needs a large amount of soda acids to need discharge as surface treatment liquid. Aluminium section barIn the general employing of industrial wastewater, close and regulate and coagulation-settlement process processing, the precipitation dirt producingMud composition is mainly containing a large amount of aluminium compound and calcium compounds, 200,000 tons of year outputsAluminium section bar enterprise discharge every year approximately 5000 tons, mud, this waste residue quantity is large, composition is multipleAssorted, mostly belong at present engineering and all also do not find proper processing method, mostly adopt at presentProcess these mud with burying method, this not only takies limited land resource, and wasteResource pollution environment.
Chinese patent CN201410291722.7 discloses a kind of printing-dyeing waste water treatment process,Comprise the following steps: in waste water, add filter aid, after sewage flocculation, filter, willSuspension wherein filters out, remaining containing coloured fine suspension and dissolved matter; Xiang YiIn waste water after level is filtered, add reproducibility decolorizer, process direct dyeing waste water, makeDye molecule in waste water forms deoxidization, degradation product; The waste water of deoxidization, degradation product will be containedBy adsorbate, because making deoxidization, degradation product or other materials in waste water, suction-operated inhalesBe attached to the surface of solids and remove; Water-insoluble organic solvent is poured in the waste water after absorption,Together concussion, in the time that two are separated, just presents colourlessly in water, dyestuff is built up in upper strata to be hadMachine mutually in; In the waste water after extraction, pour a certain amount of clear water into by its concentration dilution. But,This disposal methods efficiency is not high, is difficult to a large amount of waste water of disposable processing, and processing costHigh.
Chinese patent CN201410511641.3 discloses the processing method of a dyeing waste water,Belong to method of wastewater treatment field. The processing method of described dyeing waste water, comprises following stepRapid: dyeing waste water is removed after impurity from flowing into regulating reservoir by grid, then with pump promote intoEnter hydrolysis acidification pool, after hydrolysis acidification, water outlet flows into Aerobic Pond, carries out gas explosion oxidation, waste waterEnter sand filter from Aerobic Pond, after sedimentation and filtration, enter chemical oxidation pond, after entering to be oxidized, go outWater qualified discharge. But the processing cost of this treatment process is high, and practical application is limited.
Therefore be badly in need of the processing side of the dyeing waste water that a kind of processing cost is low, treatment effeciency is highMethod, to meet the environmental protection treatment demand for dye transfer waste water.
Summary of the invention
For the defect existing in prior art, the object of the present invention is to provide a kind of printing and dyeingThe treatment process of waste water.
For reaching above object, the technical scheme that the present invention takes is:
A treatment process for dyeing waste water, comprises the following steps:
Step S01, prepare dyeing waste water water purification agent;
Step S02, dyeing waste water is added to anaerobic bacteria, sealed fermenting 3 days;
Step S03, water purification agent is entered to air supporting coagulation reaction tank by administration device, thenUtilize immersion porous air diffuser to inflate air in waste water, blast aeration is processed 6 hours,Then precipitation; Water purification agent enters air supporting coagulation reaction tank by administration device, through several secondsStrong mixing, medicament is distributed in waste water quickly and evenly, makes the colloid in waste waterGrain loss of stability, changes into and attracts each other from mutual repulsion, then de-steady colloidal solidIn flocculation basin because of mutually collision combination, finally generate have a certain size, density and intensitySuspension floccule body, under the effect of blast aeration, flco further condenses increase; EnterBehind air flotation zone, discharge under microbubble effect at pressure air-dissolving water, in suspension flco absorption waste waterImpurity particle and heavy metal ion.
Waste water after step S04, precipitation process, through the processing of reverse osmosis membrane, obtainsMeet the clarified wastewater of emission request, discharged by shunting clear water reserviors at the bottom of pond.
Dye transfer waste water is processed in process using physics of the present invention, chemistry, biological means coupling, locatesManage effective.
Further, step S01 is specially:
Step a, aluminium section bar plant are processed the waste water producing to aluminium material surface, through adding alkali lye to enterRow neutralization precipitation, gained sediment becomes dewatered sludge by press filtration, as raw material A; ProfitWith the solid waste of aluminium section bar factory settlement of sewage be raw material, produce treatment of dyeing wastewater instituteThe water purification agent needing, has that production cost is low, the effect of twice laid, also reduces aluminium type simultaneouslyThe waste residue disposal cost of material factory, reduces processing cost;
Step b, diluting concentrated sulfuric acid is about to 40%～50% dilute sulfuric acid solution, was dilutingIn journey, open acid mist purifying equipment, start reaction agitating device, dilute sulfuric acid solution and raw material A are pressedThe ratio of 2:1 slowly drops into, and is warming up to 80 DEG C～90 DEG C and is stirred to dissolving, until dissolvedQuan Hou, standing insulation slaking, precipitation process are got supernatant, obtain reactant liquor B;
Step c, by formaldehyde, dicyandiamide, ammonium chloride by the quality of 45～55:25～35:13～20Ratio, adds in order into reactor, and be warming up to 65 DEG C～75 DEG C and carry out stirring reaction,At 60 DEG C, be incubated 4～5h, be cooled to 50 DEG C and draw below reaction liquid C, reaction liquid C masterWanting composition is dicyandiamide-formaldehyde condensation products;
Steps d, reactant liquor B and reaction liquid C are entered by the volume ratio of 40～70:80～150Row mix and blend 2～3h, obtains viscous solution D;
Step e, in viscous solution D, add the oxidation of viscous solution D gross weight 1～5%Zinc nano-powder, obtains dyeing waste water water purification agent.
Dyeing waste water water purification agent is selected in aluminium section bar plant production process, and aluminium material surface is processed picklingCan produce a large amount of waste water etc. operation, follow-up sewage disposal adopts and adds the methods such as alkali to make it neutralization heavyForm sediment, sediment, by filter-press dehydration, obtains the mud that moisture content is 70% left and right, and it is mainComposition is aluminium hydroxide, according to the feature of sewage treatment plant's Pollutants in Wastewater, have forUse with pollutant and have the composition of pretending with destroying pollutant rock-steady structure system, withAluminum sulfate is main body, prepares the water purification agent that dicyandiamide-formaldehyde condensation products is auxiliary element. WhereinAluminum sulfate mainly produces high-valence cationic, greatly increases the Al in waste water3+Cation concn,Attract lower compression Al at electronegative pollutant colloidal particles3+Enter adsorption layer, reduce ξ electricityPosition. Thereby elimination electrostatic repulsion, reduces suspension stability, make the flocculation of pollutant colloid heavyForm sediment; Dicyandiamide-formaldehyde condensation products is to Al3+There is synergy, effectively improve Al3+Activity,And this as cationic high-molecular flocculant have stronger adsorption bridging function and net catch,Volume is swept effect. Therefore, water purification agent of the present invention has excellent decolouring, turbidity removal to dyeing waste waterWith COD effect is fallen, in actual production, obtain excellent effect.
Further, in step a, in raw material A, contain 30～45% aluminium hydroxide.Make flocculating effect reach best.
Further, in step b, insulation slaking is: the insulation curing time is 3～10h.
Further, in step S02, the addition of anaerobic bacteria is dyeing waste water water purification agent weightWhat measure is 1～5%.
Further, in step S02, anaerobic bacteria is methane backeria. Effectively in Decomposition WastewaterOrganic matter.
Further, in step S02, the temperature of sealed fermenting is 40 DEG C～50 DEG C. Micro-lifeOrganic optimum temperature in thing Decomposition Wastewater.
Further, in step S03, be precipitated as: staticly settle 2 days. After making to processContamination precipitation get off, be beneficial to further processing.
Further, in step S03, the temperature of blast aeration processing is 25 DEG C～30 DEG C,The aerobe containing in air mixes with waste water with blast aeration, and this temperature is in airThe aerobic best decomposing organic matter temperature containing, further reduces waste water after processingCOD。
Further, in step S04, when waste water process reverse osmosis membrane after treatment, temperatureRemain on 10 DEG C～20 DEG C. Further purify waste water, too high or too low temperature can affect filmFlux, and then affect sewage disposal speed.
Compared with prior art, the invention has the advantages that:
1. the solid waste of technology utilization aluminium section bar of the present invention factory settlement of sewage is raw material, rawThe water purification agent that output treatment of dyeing wastewater is required, has that production cost is low, the effect of twice laidReally, also reduce the waste residue disposal cost of aluminium section bar factory simultaneously, reduce processing cost.
2. technique of the present invention is in treatment of dyeing wastewater process, has adding lessly, is processed intoThe features such as this is low, and coagulation-flocculation body is large, and the alumization in water body is closely knit, and clean-up effect is remarkable.
3. dye transfer waste water is processed in process using physics of the present invention, chemistry, biological means coupling,Treatment effect is good.
4. technique of the present invention can not produce secondary pollution to environment, system run all right, managementConvenient, and can obtain good treatment effect, processing safety is high.
Detailed description of the invention
Below provide specific embodiments of the invention, be used for the present invention to do further to say in detailBright.
Experimental technique in following embodiment, if no special instructions, is conventional method.
Embodiment 1
A kind for the treatment of process of dyeing waste water
Comprise the following steps:
(1) aluminium section bar plant is processed the waste water producing to aluminium material surface, through adding alkali lye to carry outNeutralization precipitation, gained sediment becomes dewatered sludge by press filtration, as raw material A; Raw materialIn A, contain 30% aluminium hydroxide, then diluting concentrated sulfuric acid be about to 40% dilute sulfuric acid solution,In dilution, open acid mist purifying equipment, start reaction agitating device, dilute sulfuric acid solution withRaw material A slowly drops in the ratio of 2:1, is warming up to 80 DEG C and is stirred to dissolving, until dissolveCompletely, leave standstill insulation slaking, the insulation curing time is 3h, and precipitation process is got supernatant,Obtain reactant liquor B, then formaldehyde, dicyandiamide, ammonium chloride pressed to the mass ratio of 45:25:13,Add in order into reactor, be warming up to 65 DEG C and carry out stirring reaction, at 60 DEG CInsulation 4h, is cooled to 50 DEG C and draws below reaction liquid C; By reactant liquor B and reaction liquid CCarry out mix and blend 2h by the volume ratio of 40:80, obtain viscous solution D; At viscous solutionIn D, add the zinc oxide nano-powder of viscous solution D gross weight 1%, obtain printing and dyeing uselessWater water purification agent.
(2) dyeing waste water is added to methane backeria, the addition of methane backeria is that dyeing waste water is cleanAqua weight be 1%, sealed fermenting 3 days; The temperature of sealed fermenting is 40 DEG C.
(3) water purification agent is entered to air supporting coagulation reaction tank by administration device, then utilizeImmersion porous air diffuser inflates air in waste water, and blast aeration is processed 6 hours, air blastThe temperature of Air Exposure is 25 DEG C, then staticly settles 2 days.
(4) processing of the process reverse osmosis membrane under 10 DEG C of conditions of the waste water after precipitation process,The clarified wastewater that meets emission request obtaining, is discharged by shunting clear water reserviors at the bottom of pond.
Embodiment 2
A kind for the treatment of process of dyeing waste water
Comprise the following steps:
(1) aluminium section bar plant is processed the waste water producing to aluminium material surface, through adding alkali lye to carry outNeutralization precipitation, gained sediment becomes dewatered sludge by press filtration, as raw material A; Raw materialIn A, contain 45% aluminium hydroxide, then diluting concentrated sulfuric acid be about to 50% dilute sulfuric acid solution,In dilution, open acid mist purifying equipment, start reaction agitating device, dilute sulfuric acid solution withRaw material A slowly drops in the ratio of 2:1, is warming up to 90 DEG C and is stirred to dissolving, until dissolveCompletely, leave standstill insulation slaking, the insulation curing time is 10h, and precipitation process is got supernatant,Obtain reactant liquor B, then formaldehyde, dicyandiamide, ammonium chloride pressed to the mass ratio of 55:35:20,Add in order into reactor, be warming up to 75 DEG C and carry out stirring reaction, at 60 DEG CInsulation 5h, is cooled to 50 DEG C and draws below reaction liquid C; By reactant liquor B and reaction liquid CCarry out mix and blend 3h by the volume ratio of 70:150, obtain viscous solution D; Molten at thicknessIn liquid D, add the zinc oxide nano-powder of viscous solution D gross weight 5%, printed and dyedWaste water water purification agent.
(2) dyeing waste water is added to methane backeria, the addition of methane backeria is that dyeing waste water is cleanAqua weight be 5%, sealed fermenting 3 days; The temperature of sealed fermenting is 50 DEG C.
(3) water purification agent is entered to air supporting coagulation reaction tank by administration device, then utilizeImmersion porous air diffuser inflates air in waste water, and blast aeration is processed 6 hours, air blastThe temperature of Air Exposure is 30 DEG C, then staticly settles 2 days.
(4) processing of the process reverse osmosis membrane under 20 DEG C of conditions of the waste water after precipitation process,The clarified wastewater that meets emission request obtaining, is discharged by shunting clear water reserviors at the bottom of pond.
Embodiment 3
A kind for the treatment of process of dyeing waste water
Comprise the following steps:
(1) aluminium section bar plant is processed the waste water producing to aluminium material surface, through adding alkali lye to carry outNeutralization precipitation, gained sediment becomes dewatered sludge by press filtration, as raw material A; Raw materialIn A, contain 37.5% aluminium hydroxide, then diluting concentrated sulfuric acid is about to 45% dilute sulfuric acidLiquid is opened acid mist purifying equipment in dilution, starts reaction agitating device, dilute sulfuric acidLiquid and raw material A slowly drop in the ratio of 2:1, and be warming up to 85 DEG C and be stirred to dissolving, untilAfter dissolving completely, leave standstill insulation slaking, the insulation curing time is 6.5h, and precipitation process is gotClear liquid, obtains reactant liquor B, then formaldehyde, dicyandiamide, ammonium chloride are pressed to 50:20:16.5'sMass ratio, adds in order into reactor, and be warming up to 70 DEG C and carry out stirring reaction,At 60 DEG C, be incubated 4.5h, be cooled to 50 DEG C and draw below reaction liquid C; By reactant liquor B and anti-Answer liquid C to carry out mix and blend 2.5h by the volume ratio of 55:115, obtain viscous solution D; ?The zinc oxide nano-powder that adds viscous solution D gross weight 3% in viscous solution D, to obtain final productTo dyeing waste water water purification agent.
(2) dyeing waste water is added to methane backeria, the addition of methane backeria is that dyeing waste water is cleanAqua weight be 3%, sealed fermenting 3 days; The temperature of sealed fermenting is 45 DEG C.
(3) water purification agent is entered to air supporting coagulation reaction tank by administration device, then utilizeImmersion porous air diffuser inflates air in waste water, and blast aeration is processed 6 hours, air blastThe temperature of Air Exposure is 27.5 DEG C, then staticly settles 2 days.
(4) processing of the process reverse osmosis membrane under 15 DEG C of conditions of the waste water after precipitation process,The clarified wastewater that meets emission request obtaining, is discharged by shunting clear water reserviors at the bottom of pond.
Experimental example 1
Several water-purifying process contrast experiments
The water outlet that secondary sedimentation tank in treatment of dyeing wastewater operation is got in experiment, experiment water sample is:CODcr:56.78mg/L; PH value: 8.08, commonly use the right of water purification agent by several water treatmentsThan experiment, in the situation that water sample is identical with experiment condition, with different PROCESS FOR TREATMENT waste water,Experimental result is in table 1.
Table 1 coagulant contrast experiment data
The 500ml water sample of intaking:
PH:9.90 turbidity: 203.6NTU colourity: 210 times of COD:657.0mg/L
Can find out through above-mentioned experimental result; The CODcr of the embodiment of the present invention 1 techniqueClearance reaches 93.81%; Turbidity removal rate is 97.05, far above other water-purifying process,Precipitation or air flotation effect are better, and its clean-up effect is remarkable.
Experimental example 2
After the embodiment of the present invention 1～3 PROCESS FOR TREATMENT dye transfer waste water, waste water after treatment is carried outDetect and analyze.
Microbiological indicator in waste water after the embodiment of the present invention 1～3 PROCESS FOR TREATMENT: bacterium colony is totalNumber all≤10000cfu/g, coliform all≤0.3MPN/g, mould, saccharomycete all≤50cfu/g, inorganic heavy metal ion content and COD all reach state control standard, water bodyAs clear as crystal.
The present invention is not limited to above-mentioned embodiment, for the ordinary skill people of the artMember, under the premise without departing from the principles of the invention, can also make some improvement and profitDecorations, within these improvements and modifications are also considered as protection scope of the present invention. In this description notThe content being described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. a treatment process for dyeing waste water, is characterized in that, comprises the following steps:
Step S01, prepare dyeing waste water water purification agent;
Step S02, dyeing waste water is added to anaerobic bacteria, sealed fermenting 3 days;
Step S03, water purification agent is entered to air supporting coagulation reaction tank by administration device,Then utilize immersion porous air diffuser to inflate air in waste water, blast aeration processing6 hours, then precipitation;
Waste water after step S04, precipitation process, through the processing of reverse osmosis membrane, to obtain final productTo the clarified wastewater that meets emission request, by the bottom of pond shunting clear water reserviors discharge.
2. treatment process according to claim 1, is characterized in that, described step S01Be specially:
Step a, aluminium section bar plant are processed the waste water producing to aluminium material surface, through adding alkaliLiquid carries out neutralization precipitation, and gained sediment becomes dewatered sludge by press filtration, as formerMaterial A;
Step b, diluting concentrated sulfuric acid is about to 40%～50% dilute sulfuric acid solution, rareRelease and in process, open acid mist purifying equipment, start reaction agitating device, dilute sulfuric acid solution withRaw material A slowly drops in the ratio of 2:1, is warming up to 80 DEG C～90 DEG C and is stirred to moltenSeparate, until after dissolving completely, standing insulation slaking, precipitation process are got supernatant,To reactant liquor B;
Step c, by formaldehyde, dicyandiamide, ammonium chloride by 45～55:25～35:13～20Mass ratio, add in order into reactor, be warming up to 65 DEG C～75 DEG C and carry outStirring reaction is incubated 4h～5h at 60 DEG C, is cooled to 50 DEG C and draws below reactionLiquid C;
Steps d, by reactant liquor B and reaction liquid C by the volume of 40～70:80～150Than carrying out mix and blend 2h～3h, obtain viscous solution D;
Step e, in viscous solution D, add viscous solution D gross weight 1%～5%Zinc oxide nano-powder, obtain dyeing waste water water purification agent.
3. treatment process according to claim 2, is characterized in that, in step a, and instituteState the aluminium hydroxide that contains 30%～45% in raw material A.
4. treatment process according to claim 2, is characterized in that, in step b, and instituteStating insulation slaking is: the insulation curing time is 3h～10h.
5. treatment process according to claim 1, is characterized in that, in step S02,The addition of described anaerobic bacteria be dyeing waste water water purification agent weight be 1%～5%.
6. treatment process according to claim 1, is characterized in that, in step S02,Described anaerobic bacteria is methane backeria.
7. treatment process according to claim 1, is characterized in that, in step S02,The temperature of described sealed fermenting is 40 DEG C～50 DEG C.
8. treatment process according to claim 1, is characterized in that, in step S03,Described being precipitated as: staticly settle 2 days.
9. treatment process according to claim 1, is characterized in that, in step S03,The temperature of described blast aeration processing is 25 DEG C～30 DEG C.
10. treatment process according to claim 1, is characterized in that, in step S04,When waste water process reverse osmosis membrane after treatment, temperature remains on 10 DEG C～20 DEG C.
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