CN106237980B - A kind of strong effective decoloring agent and preparation method thereof - Google Patents
A kind of strong effective decoloring agent and preparation method thereof Download PDFInfo
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- CN106237980B CN106237980B CN201610794650.7A CN201610794650A CN106237980B CN 106237980 B CN106237980 B CN 106237980B CN 201610794650 A CN201610794650 A CN 201610794650A CN 106237980 B CN106237980 B CN 106237980B
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- 238000002360 preparation method Methods 0.000 title claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 50
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 50
- 239000004411 aluminium Substances 0.000 claims abstract description 41
- 239000010802 sludge Substances 0.000 claims abstract description 38
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000000440 bentonite Substances 0.000 claims abstract description 29
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 35
- 238000004042 decolorization Methods 0.000 abstract description 25
- 239000000463 material Substances 0.000 abstract description 14
- 238000001179 sorption measurement Methods 0.000 abstract description 13
- 238000007639 printing Methods 0.000 abstract description 11
- 238000004043 dyeing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 229910052681 coesite Inorganic materials 0.000 description 4
- 229910052906 cristobalite Inorganic materials 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000001044 red dye Substances 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052682 stishovite Inorganic materials 0.000 description 4
- 229910052905 tridymite Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910018512 Al—OH Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
Abstract
The invention discloses a kind of methods for preparing strong effective decoloring agent using aluminium-containing sludge, are modified using the aluminium-containing sludge of aluminum material factory to bentonite, greatly improve bentonitic physical and chemical performance, and a kind of strong effective decoloring agent of function admirable has been made.The strong effective decoloring agent is used for printing wastewater processing, when aluminium-containing sludge and bentonite mass ratio are 5:1, when dosage 0.8g/L, adsorption time 40min, pH value 6.0~8.0, to the percent of decolourization of dyeing waste water up to 92%, COD removal rate is more than 80% simultaneously, has significant clean-up effect.
Description
Technical field
The present invention relates to technical field of sewage, especially a kind of strong effective decoloring agent and preparation method thereof.
Background technique
Printing wastewater is the predominant emissions of textile printing and dyeing industry, has big coloration, high organic content and water temperature, water
The features such as amount, water quality and pH value change greatly.In recent years, with the use of a large amount of New-type adjuvants, slurry, organic pollutant is given birth to
The property changed reduces, and processing difficulty increases.The processing for reinforcing printing water wasting maintains the ecological balance to play and its important environmental protection
Effect.
In aluminium product, to aluminium carry out surface treatment be essential process, wherein polishing, pickling, oxidation,
During coloring etc., need to consume a large amount of ejected wash waters, every square meter aluminium water consumption about 65~180L is the master of aluminum material factory's industrial wastewater
Want source.After neutralized adjusting and coagulating sedimentation, wastewater sludge is obtained, these sludge main components are alutan and portion
Divide amorphous body.Directly landfill is the disposal options that current most of enterprise uses to this sludge after drying and other treatment, not only
A large amount of land resource is occupied, and causes the waste of bauxite resource, it is also possible to generate secondary pollution.How by aluminum material factory's sludge
It uses in printing wastewater processing, achievees the purpose that " useless to abrogate ", have for the resource utilization of aluminum material factory's sludge important
Environment protection significance.
Summary of the invention
It is of the existing technology in order to overcome the problems, such as, the purpose of the present invention is to provide it is a kind of using aluminium-containing sludge preparation
Strong effective decoloring agent and preparation method thereof, for handling printing wastewater.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of strong effective decoloring agent, which is characterized in that be made of aluminium-containing sludge and bentonite, wherein the aluminium-containing sludge with it is swollen
The weight ratio of profit soil is 3:1-7:1.
Preferably, the aluminium-containing sludge includes Al2O3。
Preferably, Al in the aluminium-containing sludge2O3Content be 6-18%.
It is further preferred that the aluminium-containing sludge is provided by Zhaoqing Guangdong aluminum material factory, and moisture content 75%, aluminium content
(with Al2O3Meter) 8.5%, other parts are by CaO, Fe2O3、Na2O、SiO2Deng composition.
Preferably, the bentonite is provided by geological and mineral resource company of Guangdong Province, crosses 200 meshes, chemical composition are as follows:
SiO272.86%, Al2O313.93%, Fe2O31.89%, TiO20.20%, MnO20.006%, CaO0.49%,
MgO1.58%, K2O0.87%, Na2O2.15%, P2O50.05%.
It is further preferred that the aluminium-containing sludge and bentonitic weight ratio are 5:1.
A method of preparing above-mentioned strong effective decoloring agent, comprising the following steps:
(1) technical hydrochloric acid of 60-70mL31% is measured in 500mL beaker, and 200-300g is added under slow stirring and contains
Aluminium sludge, insulated and stirred；
(2) it is slowly added to 30-75g bentonite, insulated and stirred, moisturizing appropriate prevents from condensing therebetween, obtains sticky greyish white
Mill base liquid；
(3) the sticky canescence slurries for obtaining step (2) are dried, cooling after calcining, with distilled water flushing, are filtered, are dried
Dry doubling pulverizes and sieves, and obtains bentone earth sample.
Preferably, the temperature of insulated and stirred is 55-65 DEG C in step (1), time 25-35min；Heat preservation in step (2)
The temperature of stirring is 55-65 DEG C, time 50-60min.
Preferably, the calcination temperature in step (3) is 500-600 DEG C, time 1-2h.
Preferably, the partial size of modified alta-mud is 150-250 mesh.
The application method of above-mentioned strong effective decoloring agent, the decolorising agent including putting into 0.6-0.8g in every 1L printing water wasting,
40-50min is adsorbed under the conditions of pH6.0-8.0.
The beneficial effects of the invention are as follows
Bentonite is that have stronger adsorption capacity and cationic exchange energy with montmorillonite inorganic mineral as main component
Power, and it is resourceful, cheap, it is widely used in petrochemical industry and water treatment field.The present invention utilizes the discarded dirt in aluminum material factory
Mud is modified bentonite, and the Al in sludge is introduced into bentonitic layer structure in the form of hydroxy Al, is greatly improved
Its physical and chemical performance has apparent clean-up effect.Aluminum material factory's waste sludge is used for the preparation of wastewater treatment material, not only may be used
To solve the problems, such as its land occupation, the wasting of resources and pollution environment, the purpose of " treatment of wastes with processes of wastes against one another " may also reach up.
Detailed description of the invention
Fig. 1 (a) is bentonitic scanning electron microscope (SEM) photograph before modified.
Fig. 1 (b) is the scanning electron microscope (SEM) photograph of modified alta-mud.
Fig. 2 is the X-ray diffractogram of modified alta-mud (a) with bentonite (b) before modified.
Fig. 3 is the influence of aluminium-containing sludge and bentonite mass ratio to percent of decolourization.
Fig. 4 is that the dosage of modified alta-mud influences percent of decolourization.
Fig. 5 is influence of the adsorption time to percent of decolourization.
Fig. 6 is influence of the pH to percent of decolourization.
Specific embodiment
In order to better understand the present invention, below with specific embodiment come the technical solution that the present invention will be described in detail, but this
Invention is not limited thereto.
Aluminium-containing sludge is provided by Zhaoqing Guangdong aluminum material factory, and moisture content 75%, aluminium content is (with Al2O3Meter) 8.5%,
It is partially by CaO, Fe2O3、Na2O、SiO2Deng composition.
Bentonite is provided by geological and mineral resource company of Guangdong Province, crosses 200 meshes, chemical composition are as follows: SiO272.86%,
Al2O313.93%, Fe2O31.89%, TiO20.20%, MnO20.006%, CaO0.49%, MgO1.58%, K2O0.87%,
Na2O2.15%, P2O50.05%.
Embodiment 1
A kind of strong effective decoloring agent, is made of following raw material: aluminium-containing sludge 250g, bentonite 50g.
The preparation method of above-mentioned strong effective decoloring agent, includes the following steps
(1) technical hydrochloric acid of 65mL31% is measured in 500mL beaker, aluminium-containing sludge is added under slow stirring, 60
DEG C insulated and stirred 30min；
(2) it is slowly added to bentonite, 60 DEG C of insulated and stirred 1h, moisturizing appropriate prevents from condensing therebetween, obtains sticky greyish white
Mill base liquid；
(3) the sticky canescence slurries obtained step (2) are dried, and are cooled down after 500 DEG C of calcining 2h, with distilled water flushing,
It filters, dries and crushed 200 meshes, obtain bentone earth sample.
Embodiment 2
A kind of strong effective decoloring agent handling printing wastewater, is made of following raw material: aluminium-containing sludge 225g, bentonite 75g.
The preparation method of above-mentioned strong effective decoloring agent, with the preparation method in embodiment 1.
Embodiment 3
A kind of strong effective decoloring agent handling printing wastewater, is made of following raw material: aluminium-containing sludge 240g, bentonite 60g.
The preparation method of above-mentioned strong effective decoloring agent, with the preparation method in embodiment 1.
Embodiment 4
A kind of strong effective decoloring agent handling printing wastewater, is made of following raw material: aluminium-containing sludge 258g, bentonite 43g.
The preparation method of above-mentioned strong effective decoloring agent, with the preparation method in embodiment 1.
Embodiment 5
A kind of strong effective decoloring agent handling printing wastewater, is made of following raw material: aluminium-containing sludge 266g, bentonite 38g.
The preparation method of above-mentioned strong effective decoloring agent, with the preparation method in embodiment 1.
1 scanning electron microscope of experimental example (SEM)
After taking micro bentonite before modified and the modified bentonite of embodiment 1 to distinguish the processing of vacuum metal spraying, in scanning electricity
Observation analysis on mirror, as a result as shown in Fig. 1 (a) and 1 (b).It has been observed that compared with former bentonite, it is modified by aluminium-containing sludge
Bentonite porosity raising afterwards is more, and layer structure becomes readily apparent from, and former graininess becomes sheet, makes its large specific surface area
Width improves, and adsorption bleaching is more conducive in structure.
Experimental example 2X x ray diffraction analysis x (XRD)
The modified bentonite of a small amount of powdered modified preceding bentonite and embodiment 1 is taken to be spread out at room temperature with X-ray respectively
Instrument test is penetrated, scanning range is 2~100 °.As a result as shown in Fig. 2, a is through the modified bentonitic XRD spectrum of aluminium-containing sludge, b
For bentonite XRD spectrum before modified, bentonitic 2 θ of the angle of diffraction is 7.002 °, and according to Bragg equation, the angle of diffraction becomes smaller, structure
Interfloor distance become larger, and pass through that aluminium-containing sludge is modified, and diffraction maximum disappears substantially in a, show bentonite by liquid containing aluminic acid
It impregnates, after calcining, former lamellar structure is softened, or even removing, hydroxy Al enter in bentonite layer structure.
The modified bentonite decoloration performance of experimental example 3
(1) influence of aluminium-containing sludge and bentonite mass ratio to percent of decolourization
The practical dyeing synthetic wastewater of 1L and 1L active red dye simulated wastewater are taken, pH value 6~7 is adjusted, is separately added into 0.8g
Embodiment 1-5 decolorising agent, 60r/min stir 10min, stand 30min after take supernatant, maximum absorption wave strong point measure
Absorbance calculates percent of decolourization R,
R=(1-A/A0) × 100%
A, A in formula0For the absorbance of waste water before and after the processing.As a result as shown in figure 3, with aluminium-containing sludge and bentonite quality
Than increasing, the percent of decolourization to practical dyeing synthetic wastewater and active red dye simulated wastewater is in downward trend after first rising, in matter
It is maximum to the percent of decolourization of two kinds of waste water when amount is than being 5:1,82%, 89% can be respectively reached；Firstly, the aluminium-containing sludge aluminium used
Content is more stable, and less, equal content is 8.5% (with Al for variation2O3Meter), therefore, when aluminium-containing sludge dosage is small, modified material
Decoloration based on adsorbing；As aluminium content rises to certain proportion, the coagulability of aluminium and bentonite adsorption ability are reached
Optimum balance effect, so that percent of decolourization highest；When mass ratio continues growing, because bentonite content is less, adsorption capacity is smaller,
And the increase of aluminium is limited to the promotion of the coagulation effect of dyeing waste water, so that percent of decolourization declines to a great extent, meanwhile, also illustrate this modification
Material is based on adsorbing to the decoloration performance of dyeing waste water.
(2) influence of the dosage of decolorising agent to percent of decolourization
1L comprehensive wastewater and 1L simulated wastewater, pH value 8 are separately added into the decolorising agent of 0.2-1.2g embodiment 1, absorption
40min has investigated influence of the dosage to decolorizing effect, as shown in Figure 4.The result shows that increase of the percent of decolourization with dosage
And improve, when dosage respectively reaches 0.6g/L, 0.8g/L, handle dyeing synthetic wastewater and active red dye simulated wastewater
Percent of decolourization tends towards stability, and reaches balance to the absorption of dye molecule.
(3) influence of the adsorption time to percent of decolourization
1L comprehensive wastewater and 1L simulated wastewater, pH value 8 are added the decolorising agent of 1g embodiment 1, have investigated adsorption time
To the influence of percent of decolourization within the scope of 10-60min, as shown in Figure 5.Can be obtained by Fig. 5, adsorption time be less than 40min when, percent of decolourization with
The increase of adsorption time and improve, illustrate that modified material is not yet saturated the absorption of dye molecule at this time；With adsorption time
It continues growing, percent of decolourization is basicly stable constant, and the available optimal adsorption time is 40min, at this point, de- to dyeing synthetic wastewater
Color rate reaches as high as 87%, is up to 92% to active red dye simulated wastewater percent of decolourization.
(4) influence of the pH to percent of decolourization
In 1L comprehensive wastewater and 1L simulated wastewater, the decolorising agent of 1g embodiment 1 is added, adsorbs 40min, respectively with HCl or
NaOH solution adjusts wastewater pH, has investigated the influence within the scope of pH2.00-12.00 to percent of decolourization, as a result as shown in Figure 6.By Fig. 6
It can obtain, percent of decolourization increases with pH value, and first increase reduces again, and between 6.0~8.0, highest percent of decolourization reaches optimum PH range
92%, this is because aluminum material factory's factory sludge is generally alkaline, after acid is molten and bentonite carries out ion exchange, by obtaining after calcining
Still it is in alkalinity to modified alta-mud, when handling dyeing waste water, is influenced by waste water itself pH value, so that the absorption of modified material
Ability is different.When pH is more than 8.0, Al-OH structure is difficult to dissolve out in modified alta-mud, cause absorption to dye molecule compared with
Low, percent of decolourization starts comparatively fast to reduce.
(5) removal ability of decolorising agent COD
In 1L comprehensive wastewater and 1L simulated wastewater, the decolorising agent of 0.8g embodiment 1, adsorption time is added in pH value 8
40min has investigated decolorising agent to the removal ability of waste water COD, as a result such as table 1.
1 COD of table removal test
The result shows that using the modified bentonite in treatment dyeing waste water of aluminium-containing sludge higher percent of decolourization can be being kept
Under the conditions of, while there is good drop COD effect, COD removal rate is up to 80% or more.
Claims (4)
1. a kind of method for preparing strong effective decoloring agent, which is characterized in that the strong effective decoloring agent is by aluminium-containing sludge and bentonite
Composition, wherein the aluminium-containing sludge and bentonitic weight ratio are 3:1-7:1, the aluminium-containing sludge includes Al2O3, and it is dirty containing aluminium
Al in mud2O3Content be 6-18%, preparation the following steps are included:
(1) technical hydrochloric acid of 60-70mL31% is measured in 500mL beaker, and it is dirty containing aluminium to be added slowly with stirring 200-300g
Mud, after completely dissolution, insulated and stirred；
(2) it is slowly added to the bentonite of 30-75g, insulated and stirred obtains sticky canescence slurries；
(3) the sticky canescence slurries for obtaining step (2) are dried, cooling after calcining, with distilled water flushing, are filtered, drying is simultaneously
It pulverizes and sieves, obtains modified alta-mud.
2. the method according to claim 1, wherein in step (1) insulated and stirred temperature be 55-65 DEG C, when
Between be 25-35min；The temperature of insulated and stirred is 55-65 DEG C in step (2), time 50-60min.
3. preparation method according to claim 1, which is characterized in that the temperature calcined in step (3) is 500-600 DEG C,
Time is 1-2h.
4. preparation method according to claim 1, which is characterized in that the partial size of modified alta-mud is 150-250 mesh.
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Effective date of registration: 20231122 Address after: Room 605, No. 33 Yale Street, Haizhu District, Guangzhou City, Guangdong Province, 510000 Patentee after: Liu Yizhong Address before: 529000 jinggen Industrial Zone, Duruan Town, Jiangmen City, Guangdong Province Patentee before: GUANGDONG WEALTH ENVIRONMENTAL PROTECTION Co.,Ltd. |