CN108394982A - A kind of integral treatment method of containing chromium metal complex dyestuff waste water - Google Patents
A kind of integral treatment method of containing chromium metal complex dyestuff waste water Download PDFInfo
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- CN108394982A CN108394982A CN201810109606.7A CN201810109606A CN108394982A CN 108394982 A CN108394982 A CN 108394982A CN 201810109606 A CN201810109606 A CN 201810109606A CN 108394982 A CN108394982 A CN 108394982A
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- waste water
- metal complex
- containing chromium
- complex dyestuff
- chromium metal
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- 239000000975 dye Substances 0.000 title claims abstract description 60
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 238000011282 treatment Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 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 claims abstract description 17
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 17
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 8
- 238000003672 processing method Methods 0.000 claims abstract description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229910001430 chromium ion Inorganic materials 0.000 abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 230000015556 catabolic process Effects 0.000 abstract description 15
- 238000006731 degradation reaction Methods 0.000 abstract description 15
- 239000003054 catalyst Substances 0.000 abstract description 12
- -1 Hydroxyl radical free radical Chemical class 0.000 abstract description 11
- 230000001351 cycling effect Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 230000003252 repetitive effect Effects 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 description 23
- 238000004065 wastewater treatment Methods 0.000 description 13
- 239000011651 chromium Substances 0.000 description 11
- 230000010354 integration Effects 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 10
- 229910052804 chromium Inorganic materials 0.000 description 9
- 230000033558 biomineral tissue development Effects 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 239000013110 organic ligand Substances 0.000 description 7
- 229910017052 cobalt Inorganic materials 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 241000233855 Orchidaceae Species 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000002685 polymerization catalyst Substances 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004042 decolorization Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000006552 photochemical reaction Methods 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 229910001429 cobalt ion Inorganic materials 0.000 description 2
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 2
- 230000000536 complexating effect Effects 0.000 description 2
- 150000004696 coordination complex Chemical class 0.000 description 2
- 239000010919 dye waste Substances 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229940087654 iron carbonyl Drugs 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
- 240000006413 Prunus persica var. persica Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- FZZMDWLROBNSRG-UHFFFAOYSA-N n-phenyliminonitramide Chemical compound [O-][N+](=O)N=NC1=CC=CC=C1 FZZMDWLROBNSRG-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 210000002268 wool Anatomy 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
A kind of integral treatment method of containing chromium metal complex dyestuff waste water, as follows：（1）Containing chromium metal complex dyestuff pH value of waste water is adjusted to 3.0, polymerization pillared montmorillonite is then added as catalyst；（2）Multiphase UV Fenton systems are built by mixing hydrogen peroxide and additional ultraviolet source；The processing method is based on batch-type intermittent reaction.The present invention it has the following advantages（1）Hydroxyl radical free radical oxidability is strong, and energy fast degradation organic pollution, water outlet can meet the standard for being related to organic emission；（2）Environmental-friendly oxidant-hydrogen peroxide is utilized in the system, and final decomposition product is O2And H2O meets the theory of " green oxidation "；（3）Catalyst can remove chromium ion by suction-operated, and water outlet can meet the standard for being related to chromium ion discharge；（4）Catalyst being capable of repetitive cycling use.
Description
Technical field
The present invention relates to dye wastewater treatment fields, more particularly to the integrated treatment side of containing chromium metal complex dyestuff waste water
Method.
Background technology
China be DYE PRODUCTION and use big country.Dyestuff generates a large amount of waste water from dyestuff in the production and use process, such
Waste water has the characteristics such as coloration is big, COD high, complicated component, antibiotic degradation, causes most of waste water to be difficult to be effectively treated and straight
Run in and be put in major water body, cause around aquatic ecosystem destroyed, be further exacerbated by China's water scarcity present situation.
Premetallized dye is an important branch of dyestuff, has special glossiness and transparency and tinting strength, tinting power
By force, the features such as heat-resisting and acid resistance.Premetallized dye has excellent dye-uptake, level-dyeing property, covering, washable rub, is anti-shrink
Suede and the performances such as sun-resistant, be widely used in wool, Fypro, cellulose, furniture, paper, paint, leather, ink,
The coloring and dyeing of printing and shoe polish.Meanwhile premetallized dye because with good photo and thermal stability, structure modifiability with
And spectral characteristic, it is obtained in high-tech areas such as optical disk medium, solar cell, catalysis and the toners of electrofax
To extensive use.
Structurally, premetallized dye be one kind to contain amino, carboxyl, hydroxyl, sulfonic group and nitroazobenzene
The general designation of molecule inner complex is generated for parent dye and with transition metal element.Such dyestuff usually consists of two parts：One
Part is that organic moiety is known as ligand, the aromatic shape structure typically constituted based on carbon；Another part is inorganic portion
Divide and be known as complex ion, mainly chromium, is secondly the poisonous and harmful heavy metallics ions such as cobalt, copper.Atom in organic ligand is extremely
It is few to contain a pair of of unshared-electron, it is easy to share this to electronics with other elements to reduce internal energy of molecular.As complex ion
Unoccupied orbital of the transition metal element electron outside nucleus layer containing underfill electronics, can accommodate foreign electron to reduce internal energy of molecular,
Premetallized dye is set to be in more stable state.
The complexing of organic ligand and heavy metal ion greatly improves water solubility, the physicochemical stability of premetallized dye
And photostability, its antibiont degradation capability is enhanced, traditional wastewater treatment method is caused to be difficult to meet such wastewater treatment
Requirement.Currently, both at home and abroad to the processing method of this kind of waste water from dyestuff mainly have absorption method, chemistry and biological combination method,
Fenton and UV-H2O2Advanced oxidation processes etc..Research shows that：Absorption method can adsorption treatment premetallized dye to a certain extent
Waste water, but the limitation of highly-water-soluble and adsorbent saturated extent of adsorption to Adsorption effect due to premetallized dye, lead
This method is caused to be difficult to meet the needs of actual waste water processing；Biological treatment is difficult to degrade because of premetallized dye organic ligand
The toxicity of characteristic and heavy metal ion and be restricted.Fenton and UV-H2O2Technology relies on the hydroxyl radical free radical energy that system generates
Effectively degradation mineralising organism, but cannot be to being removed in free heavy metal ion, and free heavy metal ion is
A kind of hazardous contaminant, can long-term existence in the environment, and finally endangered by biological concentration and biological magnification
Health.Therefore, efficient degradation mineralising organic ligand must simultaneously meet to the processing of premetallized dye waste water and has
Imitate the requirement of heavy-metal ion removal these two aspects.
The present invention builds multiphase jointly to polymerize pillared montmorillonite as catalyst, with ultraviolet light and hydrogen peroxide
UV-Fenton systems utilize the organic ligand for the hydroxyl radical free radical efficient mineralization containing chromium metal complex dyestuff that the system generates
And release the chromium ion of free state, then by polymerizeing suction-operated of the pillared montmorillonite to chromium ion, reach from
Integration removes metal ion and degradable organic pollutant to the purpose of qualified discharge simultaneously in waste water.This method is simple, high
It imitates and stablizes, there is very strong practical value for the processing of containing chromium metal complex dyestuff waste water, it helps contain organic complex
The exploitation of metallic wastewater treatment technology.
Invention content
The object of the present invention is to provide a kind of integral treatment methods of containing chromium metal complex dyestuff waste water, use this method
Containing chromium metal complex dyestuff waste water and qualified discharge can be efficiently and stably handled, and helps to contain organic complexing metal waste water
The exploitation for the treatment of technology.
In order to achieve the above object, the present invention is to polymerize pillared montmorillonite as catalyst structure multiphase UV-
Fenton systems, the organic ligand of the hydroxyl radical free radical efficient degradation containing chromium metal complex dyestuff generated using the system are simultaneously released
The chromium ion of free state is released, then by polymerizeing suction-operated of the pillared montmorillonite to chromium ion, is reached from waste water
Middle integration removes the purpose of chromium ion and degradable organic pollutant simultaneously.
The integral treatment method of a kind of containing chromium metal complex dyestuff waste water of the present invention, it is characterised in that by as follows
Step.
（1）Containing chromium metal complex dyestuff pH value of waste water is adjusted to 3.0, polymerization pillared montmorillonite conduct is then added
Catalyst.
（2）Multiphase UV-Fenton systems are built by mixing hydrogen peroxide and additional ultraviolet source, what which generated
The organic ligand of hydroxyl radical free radical energy efficient degradation premetallized dye.
（3）The chromium ion that Adsorption releases free state can be stablized by polymerizeing pillared montmorillonite simultaneously, to make
Treated discharged wastewater met the national standard.
Its object of the waste water of processing of the present invention is containing chromium metal complex dyestuff waste water.
The mode of operation of the present invention is based on batch-type intermittent reaction.
The present invention it has the following advantages（1）Hydroxyl radical free radical oxidability is strong, energy fast degradation organic pollution, water outlet
The standard for being related to organic emission can be met；（2）Environmental-friendly oxidant-hydrogen peroxide is utilized in the system, final point
It is O to solve product2And H2O meets the theory of " green oxidation "；（3）Catalyst can remove chromium ion, water outlet by suction-operated
The standard for being related to chromium ion discharge can be met；（4）Catalyst being capable of repetitive cycling use.
Description of the drawings
Fig. 1 is the flow chart of containing chromium metal complex dyestuff integrated treatment.
Fig. 2 is during polymerization catalyst pillared montmorillonite is reused to premetallized dye neutral bordeaux
The influence schematic diagram of GRL decolorations.
Fig. 3 is pink BL neutral to premetallized dye during polymerization catalyst pillared montmorillonite is reused
The influence schematic diagram of decoloration.
Fig. 4 is orchid BNL neutral to premetallized dye during polymerization catalyst pillared montmorillonite is reused
The influence schematic diagram of decoloration.
Fig. 5 is the influence to premetallized dye mineralising during polymerization catalyst pillared montmorillonite is reused
Schematic diagram.
Fig. 6 is influenced on heavy metal ion adsorbed removal during polymerization catalyst pillared montmorillonite is reused
Schematic diagram.
Specific implementation mode
The present invention will be described further by following embodiment.
Measure is as follows when concrete application：At photochemical reactor center（Or reaction tank center）Quartz socket tube is set, it is built-in
Ultraviolet lamp tube, quartz socket tube and photochemical reactor（Reaction tank center）Between intermediate region be reaction degradation area, reaction zone
Agitating device is arranged in lower part.It is 3.0 that premetallized dye waste water, which adjusts initial pH value, ultraviolet lamp tube（254 nm）It is placed in reaction
Light source is used as in device/pond center quartz socket tube.Polymerization pillared montmorillonite is added in reaction zone and hydrogen peroxide structure is more
Phase UV-Fenton integration wastewater treatment systems.
Comparing embodiment 1-1.
The integrated treatment effect of containing chromium metal complex dyestuff：Quartz socket tube, casing is arranged in photochemical reaction device internal layer
Interior placement ultraviolet lamp（254 nm）As reaction light source；Middle layer is that multiphase UV-Fenton hydroxyl radical free radicals generate area；Outer layer connects
Connect water bath with thermostatic control.Reactor bottom setting blender makes reaction system be uniformly mixed.The system setting polymerization pillared swelling of iron carbonyl
Native dosage is 1g/L, containing chromium metal complex dyestuff（Neutral pink BL）Waste water initial concentration is 50 mg/L, and concentration of hydrogen peroxide is
10 mmol/L, with ultraviolet lamp（254nm）Basic multiphase UV-Fenton integration wastewater treatment systems are built as light source.
Multiphase UV-Fenton systems are to containing chromium metal complex dyestuff（Neutral pink BL）Degradation kinetics constant k values be
0.1056 min-1, can quickly decolourize to dyestuff, handle the dye decolored rates of 40 min close to 100%.From further mineralising
Interpretation of result, after handling 30 min, containing chromium metal complex dyestuff（Neutral pink BL）The removal of COD starts significantly to carry in waste water
It is high.After handling 120 min, for multiphase UV-Fenton integrated treatments system to COD removal rates up to 82.2%, water outlet meets related colour
Degree, CODCrAnd BOD5Discharge standard.With containing chromium metal complex dyestuff（Neutral pink BL）Degradation, chromium ion concentration in solution
It gradually decreases, embodies efficient absorption removal ability of the iron pillared bentonite to chromium ion.After handling 120 min, in solution
Chromium ion concentration is down to 0.384 mg/L by 2.050 initial mg/L, is less than《Integrated wastewater discharge standard》（GB 8978-
1996）The discharge standard of middle correlation chromium.
Comparing embodiment 1-2.
Effect of the system circular flow to the integrated treatment of containing chromium metal complex dyestuff：Photochemical reaction device internal layer is set
Quartz socket tube is set, ultraviolet lamp is placed in casing（254 nm）As reaction light source；Middle layer is multiphase UV-Fenton hydroxyl frees
Base generates area；Outer layer connects water bath with thermostatic control.Reactor bottom setting blender makes reaction system be uniformly mixed.System setting polymerization
Pillared montmorillonite dosage is 1g/L, containing chromium metal complex dyestuff（Neutral pink BL）Waste water initial concentration is 50 mg/L,
Concentration of hydrogen peroxide is 10 mmol/L, with ultraviolet lamp（254nm）Basic multiphase UV-Fenton integrations are built as light source
Wastewater treatment system.After 120 min of the system for handling each run, containing chromium metal complex dyestuff is rejoined（Neutral pink BL）
And 10 mmol/L concentration of hydrogen peroxide, carry out circular flow.
During multiphase UV-Fenton integration wastewater treatment system circular flows, to containing chromium metal complex dyestuff（It is neutral
Pink BL）Degradation kinetics constant k values be able to maintain that in 0.10 min-1 ~ 0.12 min-1Between.System is run for the first time,
Neutral pink BL percent of decolourizations rate is up to 99.37% when handling 40 min；Second runs, and percent of decolourization is 99.78% when 40 min；The
It runs three times, percent of decolourization is 99.23% when 40 min.From mineralization of organic material angle analysis, neutral pink BL when 120 min is handled
Mineralization rate be increased slightly with system circular flow, wherein third time circular flow when mineralization rate be up to 93%.Multiphase UV-
The water outlet of Fenton integrations wastewater treatment system circular flow three times is satisfied by associated chroma, CODCrAnd BOD5Discharge mark
It is accurate.
During multiphase UV-Fenton integration wastewater treatment system circular flows, polymerization pillared montmorillonite is not
Only the power efficient of catalytic degradation organic matter is stablized, and the characteristic of efficient stable is also shown to the Adsorption of chromium ion.Body
System runs for the first time, and chromium ion concentration is 0.384mg/L in solution after 120 min reactions；Second of operation, 120 min reactions
Chromium ion concentration is 0.324mg/L in solution afterwards；Third time is run, and chromium ion concentration is 0.270 in solution after 120 min reactions
Mg/L is below《Integrated wastewater discharge standard》（GB 8978-1996）The discharge standard of middle correlation chromium.
Comparing embodiment 1-3.
The comparison of integrated treatment effect containing chromium, cobalt, copper metal complex dyestuff：Stone is arranged in photochemical reaction device internal layer
English casing, casing is interior to place ultraviolet lamp（254 nm）As reaction light source；Middle layer is produced for multiphase UV-Fenton hydroxyl radical free radicals
Raw area；Outer layer connects water bath with thermostatic control.Reactor bottom setting blender makes reaction system be uniformly mixed.System setting polymerization hydroxyl
It is 1g/L that iron prop, which supports bentonite consumption, contains chromium, cobalt and copper metal complex dyestuff（Corresponding neutral pink BL, neutral bordeaux GRL and
Neutral orchid BNL）Initial concentration be 50 mg/L, concentration of hydrogen peroxide be 10 mmol/L, with ultraviolet lamp（254nm）As light source
Build basic multiphase UV-Fenton integration wastewater treatment systems.After 120 min of the system for handling each run, add again
Enter the concentration of hydrogen peroxide of corresponding premetallized dye and 10 mmol/L, carries out circular flow.
The degradation rate equation of premetallized dye when 1 system for handling circular flow of table.
During multiphase UV-Fenton integration wastewater treatment system circular flows, to containing chromium and the network of metallized metal containing cobalt
Close dyestuff（Neutral pink BL and neutral bordeaux GRL）Waste water maintains stable catalytic degradation decoloring ability, but to copper-containing metal
Complex dyestuff（Neutral orchid BNL）The decoloring ability of waste water decreases with catalyst reuse.Neutral bordeaux GRL and neutral peach
The mineralization rate of red BL is increased slightly with the reuse of catalyst, mineralization rate highest, respectively 91% He when third time circular flow
93%.The mineralization rate of neutral orchid BNL is reused with catalyst to decrease, and when third time circular flow, COD removal rates are
58.3%, it is less than the 68.8% of first time.Multiphase UV-Fenton integration wastewater treatment systems rerun processing containing chromium and containing cobalt
The water outlet of metallized metal complex dyestuff waste water can meet associated chroma, CODCrAnd BOD5Discharge standard.
From heavy metal ion adsorbed removal interpretation of result, the initial cobalt content of neutral bordeaux GRL waste water from dyestuff is 2.891 mg/
L, system first time circular flow, concentration of cobalt ions is 0.943 mg/L in solution after 120 min；But it follow-up two, follows three times
Inscription of loop, concentration of cobalt ions is up to 1.792 and 2.235 mg/L respectively to 120 min in solution after reaction, it is difficult to be met
The requirement of qualified discharge.The neutral initial copper content of orchid BNL waste water from dyestuff is 2.054 mg/L, system first time circular flow, 120
Copper ion concentration is 0.628 mg/L in solution after min.But after follow-up two, circular flow three times, 120 min in solution copper from
Sub- concentration is respectively 1.630 and 1.800 mg/L, is equally also difficult to meet the requirement of qualified discharge.
In premetallized dye currently used in the market, metal ion is largely chromium.It is pillared swollen to polymerize iron carbonyl
The eliminating rate of absorption of the native chromium of profit is high, and efficient absorption is still shown when directly being reused without eluting and removes chromium ion
Ability.Illustrate to polymerize the containing chromium metal that the multiphase UV-Fenton processing methods that pillared montmorillonite is catalyst are excellent
The integral treatment method of complex dyestuff waste water.
Claims (1)
1. a kind of integral treatment method of containing chromium metal complex dyestuff waste water, it is characterised in that as follows：
（1）Containing chromium metal complex dyestuff pH value of waste water is adjusted to 3.0, polymerization pillared montmorillonite is then added as catalysis
Agent；
（2）Multiphase UV-Fenton systems are built by mixing hydrogen peroxide and additional ultraviolet source；
The processing method is based on batch-type intermittent reaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810109606.7A CN108394982A (en) | 2018-02-05 | 2018-02-05 | A kind of integral treatment method of containing chromium metal complex dyestuff waste water |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810109606.7A CN108394982A (en) | 2018-02-05 | 2018-02-05 | A kind of integral treatment method of containing chromium metal complex dyestuff waste water |
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| Publication Number | Publication Date |
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| CN108394982A true CN108394982A (en) | 2018-08-14 |
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