CN112607969B - Dye wastewater treatment process - Google Patents
Dye wastewater treatment process Download PDFInfo
- Publication number
- CN112607969B CN112607969B CN202011508026.9A CN202011508026A CN112607969B CN 112607969 B CN112607969 B CN 112607969B CN 202011508026 A CN202011508026 A CN 202011508026A CN 112607969 B CN112607969 B CN 112607969B
- Authority
- CN
- China
- Prior art keywords
- cathode
- chamber
- iron
- carbon
- activated carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 24
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 15
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 32
- 239000002351 wastewater Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000005273 aeration Methods 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 55
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 23
- 239000000945 filler Substances 0.000 claims description 22
- 238000001179 sorption measurement Methods 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000006386 neutralization reaction Methods 0.000 claims description 12
- 230000015271 coagulation Effects 0.000 claims description 10
- 238000005345 coagulation Methods 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 6
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical group [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 6
- 229940112669 cuprous oxide Drugs 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- -1 sulfide ions Chemical class 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- AQMRBJNRFUQADD-UHFFFAOYSA-N copper(I) sulfide Chemical compound [S-2].[Cu+].[Cu+] AQMRBJNRFUQADD-UHFFFAOYSA-N 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000002484 cyclic voltammetry Methods 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 235000011149 sulphuric acid Nutrition 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 150000001448 anilines Chemical class 0.000 abstract 1
- 239000010919 dye waste Substances 0.000 abstract 1
- 150000005181 nitrobenzenes Chemical class 0.000 abstract 1
- 239000000975 dye Substances 0.000 description 20
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 16
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 229910001448 ferrous ion Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000000987 azo dye Substances 0.000 description 2
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 2
- POJOORKDYOPQLS-UHFFFAOYSA-L barium(2+) 5-chloro-2-[(2-hydroxynaphthalen-1-yl)diazenyl]-4-methylbenzenesulfonate Chemical compound [Ba+2].C1=C(Cl)C(C)=CC(N=NC=2C3=CC=CC=C3C=CC=2O)=C1S([O-])(=O)=O.C1=C(Cl)C(C)=CC(N=NC=2C3=CC=CC=C3C=CC=2O)=C1S([O-])(=O)=O POJOORKDYOPQLS-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 208000005623 Carcinogenesis Diseases 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 231100000504 carcinogenesis Toxicity 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 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
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 239000001005 nitro dye Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003911 water pollution Methods 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46176—Galvanic cells
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
-
- 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
- C02F3/02—Aerobic processes
- C02F3/06—Aerobic processes using submerged filters
-
- 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
- C02F3/28—Anaerobic digestion processes
Abstract
The dye waste water treatment process includes the steps of adding pretreated waste water into an electrochemical water treatment device, and then, setting a proton exchange membrane and a porous filter plate in a reaction tank of the electrochemical water treatment device to divide the reaction tank into a cathode micro-electrolysis chamber, an anode chamber and an aeration cathode chamber, wherein hydrogen evolution reaction occurs in the cathode micro-electrolysis chamber under the action of a cathode electrode, and nitrobenzene compounds and azo compounds are quickly converted into anilines under the action of copper.
Description
Technical Field
The invention belongs to the field of wastewater treatment, and particularly relates to a dye wastewater treatment process.
Background
Due to the development of industry, especially the rapid development of petrochemical industry, pharmaceutical industry, dye industry, agricultural chemical industry and the like, the yield and variety of organic compounds are increasing, and they enter water bodies in different ways, and the pollution of the organic compounds is all over the whole world, such as rivers, lakes, oceans, groundwater and the like.
Among them, dyes are becoming a major source of environmental pollutants, with an average of about 150 tons of dye per day being discharged into the body of water in the world. China is a large country for dye production and use, and the dye wastewater discharged without treatment per year exceeds 1.6X109 cubic meters. The dye molecule contains a large number of benzene rings, naphthalene rings, amino groups, azo groups and other groups, and the production wastewater has complex components, deep chromaticity, peculiar smell, high organic matter and inorganic salt content and extremely threats to human health. With the development of chemical industry, dye varieties are increased, the number of rings is increased structurally, carbon chains are increased, dyeing groups are many, and the BOD/COD ratio of wastewater is reduced, so that the wastewater becomes difficult to biochemically treat. And azo dyes and nitro dyes are reduced to aromatic amine compounds with carcinogenicity under anaerobic conditions. Still other complex metal-containing dyes, such as chromium-containing dyes, can release chromium and can also produce carcinogenesis. Therefore, research on novel economic, environment-friendly and efficient difficult-to-biodegrade dye wastewater treatment technology becomes one of hot spots of water pollution control technology.
Disclosure of Invention
The invention aims to provide a dye wastewater treatment process.
In order to solve the technical problems, the invention discloses a dye wastewater treatment process, which comprises the following steps:
(1) Pretreating, namely respectively coarsely filtering and finely filtering dye wastewater through two grids;
(2) The electrochemical water treatment process comprises the following steps: delivering the filtered dye wastewater to an electrochemical water treatment device, wherein an anode, a cathode and an iron-carbon filler are arranged in the electrochemical water treatment device;
(3) And (3) neutralization treatment: delivering the effluent of the electrochemical water treatment process to a neutralization pond for neutralization treatment, and adding calcium carbonate into the neutralization pond;
(4) And (3) coagulation treatment: delivering the effluent of the electrochemical water treatment process to a coagulation pool for coagulation treatment;
(5) Adsorption treatment: conveying the coagulated effluent to an adsorption tank for adsorption;
(6) And (3) biochemical treatment: and conveying the adsorbed effluent to a biochemical treatment device for biochemical treatment, and discharging the wastewater after the treatment is finished.
Further, the electrochemical water treatment device comprises a cathode micro-electrolysis chamber 1, an anode chamber 3, an aeration cathode chamber 4, a proton exchange membrane 15 and a porous filter plate 45, wherein the proton exchange membrane 15 and the porous filter plate are arranged in a reaction tank and divide the reaction tank into 3 cavities, the cavity formed between the proton exchange membrane 15 and the porous filter plate 45 is the anode chamber 3, the other side of the proton exchange membrane 15 is the cathode micro-electrolysis chamber 1, the other side of the porous filter plate 45 is the aeration cathode chamber, an iron carbon filler 11 is arranged in the cathode micro-electrolysis chamber 1, a plurality of first cathodes 12 are arranged in the iron carbon filler, the first cathodes 12 are communicated with a power supply 2 through cathode wires 13, an anode 32 is arranged in the anode chamber 3, the anode 32 is connected with the power supply 2 through anode wires 31, a second cathode 41 is arranged in the aeration cathode chamber 4 and is communicated with the power supply through the second cathode wires 44, an aeration device 42 is arranged in the aeration cathode chamber 4, and the aeration device 42 is communicated with a blower 43;
further, the first cathode 12 is a plate-shaped cathode that divides the iron-carbon filler into several layers;
further, the mass ratio of iron to carbon in the iron-carbon filler is 1-2:5-20;
further, copper is added into the iron-carbon filler, wherein the copper is one or more of copper scraps, copper particles or copper shavings;
further, the mass fraction of copper in the iron-carbon filler is 1% -5%;
further, the carbon added in the iron carbon filler is activated carbon loaded with cuprous oxide;
further, the preparation method of the cuprous oxide-loaded activated carbon comprises the following steps:
adding activated carbon into a solution containing 0.05-0.2mol/L of cuprous ions, soaking for 1-5h, taking out the activated carbon, performing air drying treatment to obtain copper-carrying activated carbon, adding the copper-carrying activated carbon into the solution containing 0.01-0.15mol/L of sulfide ions, soaking for 3-10h, taking out, washing with deionized water, performing air drying to obtain cuprous sulfide activated carbon, activating the cuprous sulfide activated carbon with electrochemical cyclic voltammetry cv to obtain sulfur-doped cuprous oxide activated carbon, wherein the potential window of cv activation is 0.05V-0.4V vs RHE, the scanning rate is 80-85mV/s, the electrolyte is 0.5M H2SO4, the cycle number is 800-1200, and the counter electrode is a Pt electrode.
Further, a circulating device is arranged between the anode chamber 3 and the cathode micro-electrolysis chamber 1, and the circulating device can convey the liquid in the anode chamber 3 into the cathode micro-electrolysis chamber 1;
further, a waterway system is arranged between the electrolysis chamber 1 and the aeration cathode chamber 4, and the waterway system can convey the wastewater in the cathode micro-electrolysis chamber 1 into the aeration cathode chamber 4;
further, the aeration cathode chamber 4 is provided with a water outlet;
further, the porous filter plate 45 is a ceramic membrane plate;
further, the adsorption tank adopts activated carbon as an adsorbent;
further, the activated carbon in the adsorption tank is used as an iron carbon filler carbon source.
The dye wastewater treatment process has at least the following advantages:
1. the dye wastewater contains high sulfate ions, and after the pretreated wastewater enters an electrochemical water treatment device, the electrolyte concentration is high, so that the electrochemical reaction is facilitated;
2. a proton exchange membrane and a porous filter plate are arranged in a reaction tank of the electrochemical water treatment device to divide the reaction tank into a cathode micro-electrolysis chamber, an anode chamber and an aeration cathode chamber, hydrogen evolution reaction is carried out in the cathode micro-electrolysis chamber under the action of a cathode electrode, and nitrobenzene and azo compounds are rapidly converted into aniline substances under the action of copper;
3. in a cathode micro-electrolysis chamber, the micro-electrolysis process and the cathode reduction process are carried out simultaneously, micro-electrolysis elemental iron is converted into ferrous ions, the ferrous ions are converted into iron ions under the action of a cathode, and the ferrous ions in the cathode micro-electrolysis chamber are circularly reciprocated, so that the cathode maintains the ferrous ions at a lower level in the electrolysis chamber, the high-efficiency operation of micro-electrolysis can be maintained, and the generation of micro-electrolysis hardening can be prevented;
4. copper is added into the iron-carbon filler, the speed of the reduction process of nitrobenzene is further enhanced by the existence of the copper, and meanwhile, the copper oxide is loaded on the iron-carbon filler, so that the hydrogen evolution reaction of the iron-carbon filler is accelerated under the action of the first cathode, and the reduction process of nitrobenzene is further improved;
5. h generated by the first cathode in a nascent state can directly react with nitrobenzene to convert the nitrobenzene into aniline substances;
6. the waste water in part of the anode chamber is conveyed to the cathode micro-electrolysis chamber, so that the iron content in the cathode chamber can be maintained, and the iron content is prevented from being linearly reduced in the reaction process of the iron-carbon filler;
7. and (3) aerating in the aeration cathode chamber, generating hydrogen peroxide at the second cathode, conveying the wastewater in the cathode micro-electrolysis chamber 1 into the aeration cathode chamber, generating Fenton reaction under the action of iron ions in the wastewater, and further oxidizing aniline substances in the wastewater to break benzene rings and further improve biodegradability.
Drawings
FIG. 1 is a schematic diagram of a fuel wastewater treatment process
FIG. 2 is a schematic diagram of an electrochemical water treatment device;
description of the embodiments
The present invention is described in further detail below by way of examples to enable those skilled in the art to practice the same by reference to the specification.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Examples
As shown in figure 1, the production workshops respectively convey wastewater generated in the disperse dye production process to a water storage tank, COD36150mg/L in the wastewater, total nitrogen 3420mg/L, nitrobenzene 128mg/L and active brilliant red X-3B with the concentration of 26.3mg/L and chromaticity 793 times;
(1) Pretreating, namely respectively coarsely filtering and finely filtering dye wastewater through two grids;
(2) The electrochemical water treatment process comprises the following steps: delivering filtered dye wastewater to an electrochemical water treatment device, wherein an anode, a cathode and an iron carbon filler are arranged in the electrochemical water treatment device, the wastewater enters the cathode micro-electrolysis chamber 1 through a water inlet pipe 14, a power supply 2 is started, the power supply is a direct-current constant-voltage power supply, a voltage gradient is set to be 1V/cm, the residence time of the wastewater in the cathode micro-electrolysis chamber 1 is 15-30min, the waterway system can deliver the wastewater in the cathode micro-electrolysis chamber 1 to an aeration cathode chamber 4, a blower 43 is started for blowing aeration, the wastewater is aerated, and the gas-water ratio is 3:1, and refluxing the wastewater in the anode chamber 3 into the cathode micro-electrolysis chamber 1 through a circulating device, wherein the reflux ratio is 1:20; the residence time of the wastewater in the aeration cathode chamber 4 is 20-40min; COD removal rate is 23%, nitrobenzene removal rate is 74%, and chromaticity is reduced by 68%;
(3) And (3) neutralization treatment: delivering the effluent of the electrochemical water treatment process to a neutralization pond for neutralization treatment, and adding calcium carbonate into the neutralization pond, wherein the molar quantity of the added calcium carbonate is 1-1.2 times of that of sulfate radical in the wastewater, so as to form refractory substances generated after the azo dye of the refractory calcium sulfate adsorption part is decomposed;
(4) And (3) coagulation treatment: delivering the effluent of the electrochemical water treatment process to a coagulation tank for coagulation treatment, and delivering sediments generated in the coagulation process to a plate-frame filter;
(5) Adsorption treatment: conveying the coagulated effluent to an adsorption tank for adsorption, and adding activated carbon into the adsorption tank;
(6) And (3) biochemical treatment: and (3) conveying the adsorbed effluent to a biochemical treatment device for biochemical treatment, and discharging the wastewater after the treatment is finished, wherein the biochemical treatment is anaerobic and biological contact oxidation, the COD (chemical oxygen demand) of the effluent is 32mg/L, the total nitrogen is 3.2mg/L, and nitrobenzene and active brilliant red X-3B are not detected and the chromaticity is 26 times.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (5)
1. A dye wastewater treatment process, comprising: (1) Pretreating, namely respectively coarsely filtering and finely filtering dye wastewater through two grids; (2) an electrochemical water treatment process: delivering the filtered dye wastewater to an electrochemical water treatment device, wherein an anode, a cathode and an iron-carbon filler are arranged in the electrochemical water treatment device; (3) neutralization treatment: delivering the effluent of the electrochemical water treatment process to a neutralization pond for neutralization treatment, and adding calcium carbonate into the neutralization pond; (4) coagulation treatment: delivering the effluent of the electrochemical water treatment process to a coagulation pool for coagulation treatment; (5) adsorption treatment: conveying the coagulated effluent to an adsorption tank for adsorption; (6) biochemical treatment: the adsorption effluent is conveyed to a biochemical treatment device for biochemical treatment, the wastewater is discharged after the treatment is finished, the electrochemical water treatment device comprises a cathode micro-electrolysis chamber (1), an anode chamber (3), an aeration cathode chamber (4), a proton exchange membrane (15) and a porous filter plate (45), the proton exchange membrane (15) and the porous filter plate are arranged in a reaction tank and divide the reaction tank into (3) cavities, the cavities formed between the proton exchange membrane (15) and the porous filter plate (45) are the anode chamber (3), the other side of the proton exchange membrane (15) is the cathode micro-electrolysis chamber (1), the other side of the porous filter plate (45) is an aeration cathode chamber, an iron-carbon filler (11) is arranged in the cathode micro-electrolysis chamber (1), a plurality of first cathodes (12) are arranged in the iron-carbon filler, the first cathodes (12) are communicated with a power supply (2) through cathode wires (13), anodes (32) are arranged in the anode chambers (3), the anodes (32) are connected with the power supply (2) through anode wires (31), the cathode micro-electrolysis chamber (4) is provided with an aeration cathode (41), the second cathodes (41) are communicated with an aeration device (42) through a second wire (41), the aeration cathode chamber (4) is provided with a water outlet, the first cathode (12) is a plate-shaped cathode, the plate-shaped cathode divides the iron-carbon filler into a plurality of layers, the mass ratio of iron to carbon in the iron-carbon filler is 1-2:5-20, copper is added in the iron-carbon filler, and the copper is one or more of copper scraps, copper particles or copper shavings; the mass fraction of copper in the iron-carbon packing is 1% -5%, a circulating device is arranged between the anode chamber (3) and the cathode micro-electrolysis chamber (1), the circulating device can convey liquid in the anode chamber (3) into the cathode micro-electrolysis chamber (1), a waterway system is arranged between the cathode micro-electrolysis chamber (1) and the aeration cathode chamber (4), and the waterway system can convey wastewater in the cathode micro-electrolysis chamber (1) into the aeration cathode chamber (4).
2. The dye wastewater treatment process of claim 1, wherein the carbon added in the iron carbon filler is cuprous oxide-loaded activated carbon, and the preparation method of the cuprous oxide-loaded activated carbon comprises the following steps: adding activated carbon into a solution containing 0.05-0.2mol/L of cuprous ions, soaking for 1-5h, taking out the activated carbon, performing air drying treatment to obtain copper-carrying activated carbon, adding the copper-carrying activated carbon into the solution containing 0.01-0.15mol/L of sulfide ions, soaking for 3-10h, taking out, washing with deionized water, performing air drying to obtain cuprous sulfide activated carbon, activating the cuprous sulfide activated carbon with electrochemical cyclic voltammetry cv to obtain sulfur-doped cuprous oxide activated carbon, wherein the potential window of cv activation is 0.05V-0.4V vs RHE, the scanning rate is 80-85mV/s, the electrolyte is 0.5M H2SO4, the cycle number is 800-1200, the counter electrode is a Pt electrode, and finally obtaining the cuprous oxide-carrying activated carbon.
3. A dye wastewater treatment process according to claim 1, wherein the adsorption tank uses activated carbon as an adsorbent.
4. A dye wastewater treatment process according to claim 3, wherein activated carbon in the adsorption tank is used as a carbon source of the iron carbon filler.
5. A dye wastewater treatment process as claimed in claim 2, wherein the porous filter plate (45) is a ceramic membrane plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508026.9A CN112607969B (en) | 2020-12-18 | 2020-12-18 | Dye wastewater treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011508026.9A CN112607969B (en) | 2020-12-18 | 2020-12-18 | Dye wastewater treatment process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112607969A CN112607969A (en) | 2021-04-06 |
| CN112607969B true CN112607969B (en) | 2023-10-31 |
Family
ID=75240731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011508026.9A Active CN112607969B (en) | 2020-12-18 | 2020-12-18 | Dye wastewater treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112607969B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102272992A (en) * | 2008-11-12 | 2011-12-07 | 雷蒙特亚特特拉维夫大学有限公司 | A direct liquid fuel cell having hydrazine or derivatives thereof as fuel |
| CN102887559A (en) * | 2011-07-21 | 2013-01-23 | 中国科学院生态环境研究中心 | Electrochemical reduction assistance-based biosorption integrated reactor and treatment method of hexavalent chromium-containing wastewater |
| CN102992455A (en) * | 2012-12-25 | 2013-03-27 | 清华大学 | Novel three-dimensional electrode device for treating wastewater difficult in biologically degrading |
| CN103910414A (en) * | 2014-04-23 | 2014-07-09 | 中国核工业华兴建设有限公司 | Combined electrolysis reactor and waste water treatment method thereof |
| CN104003481A (en) * | 2014-05-09 | 2014-08-27 | 昆明理工大学 | Electrical filter board and application of same in highly concentrated organic wastewater |
| CN104386818A (en) * | 2014-11-17 | 2015-03-04 | 浙江大学 | Wastewater treatment system and method employing dual-chamber MFC (microbial fuel cell) combined with A/O process |
| CN104478073A (en) * | 2014-12-10 | 2015-04-01 | 广西师范大学 | Device for treating industrial wastewater difficult to biodegrade by virtue of ABR-bioelectric Fenton coupling technique |
| CN104817125A (en) * | 2015-05-14 | 2015-08-05 | 张家港市山牧新材料技术开发有限公司 | Industrial sewage treating agent |
| CN106277589A (en) * | 2016-08-25 | 2017-01-04 | 南京大学盐城环保技术与工程研究院 | A kind of system and method utilizing ferrum carbon Fenton pretreatment UBF A/O to process waste water from dyestuff |
| CN106629814A (en) * | 2017-01-23 | 2017-05-10 | 吉林大学 | Sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction |
| CN108328840A (en) * | 2018-04-03 | 2018-07-27 | 浙江奇彩环境科技股份有限公司 | A kind of recycling processing method of waste water from dyestuff |
| CN108400346A (en) * | 2018-03-11 | 2018-08-14 | 浙江大学 | A kind of preparation method of the overmolded carbon material of cuprous oxide |
| CN108585379A (en) * | 2018-05-29 | 2018-09-28 | 内蒙古科技大学 | A kind of apparatus and method improving organic wastewater with difficult degradation thereby treatment effect |
| CN110426439A (en) * | 2019-07-03 | 2019-11-08 | 淮阴工学院 | Wireless photoelectric chemistry indirect analysis detection device and preparation method thereof |
| CN110697706A (en) * | 2019-10-08 | 2020-01-17 | 北京化工大学 | Preparation method of three-dimensional biomass carbon/copper sulfide used as electrode material |
| CN112047456A (en) * | 2020-07-28 | 2020-12-08 | 国河环境研究院(南京)有限公司 | Microbial fuel cell wastewater denitrification device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006050182A1 (en) * | 2006-10-25 | 2008-04-30 | Daimler Ag | Fuel cell system operating method for vehicle, involves interrupting air supply to cathode of fuel cell system, during changeover to mode of reduced power output, and reducing electric voltage of fuel cell stack by using current pulse |
| JP2019053930A (en) * | 2017-09-15 | 2019-04-04 | トヨタ自動車株式会社 | Aqueous lithium ion secondary battery |
-
2020
- 2020-12-18 CN CN202011508026.9A patent/CN112607969B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102272992A (en) * | 2008-11-12 | 2011-12-07 | 雷蒙特亚特特拉维夫大学有限公司 | A direct liquid fuel cell having hydrazine or derivatives thereof as fuel |
| CN102887559A (en) * | 2011-07-21 | 2013-01-23 | 中国科学院生态环境研究中心 | Electrochemical reduction assistance-based biosorption integrated reactor and treatment method of hexavalent chromium-containing wastewater |
| CN102992455A (en) * | 2012-12-25 | 2013-03-27 | 清华大学 | Novel three-dimensional electrode device for treating wastewater difficult in biologically degrading |
| CN103910414A (en) * | 2014-04-23 | 2014-07-09 | 中国核工业华兴建设有限公司 | Combined electrolysis reactor and waste water treatment method thereof |
| CN104003481A (en) * | 2014-05-09 | 2014-08-27 | 昆明理工大学 | Electrical filter board and application of same in highly concentrated organic wastewater |
| CN104386818A (en) * | 2014-11-17 | 2015-03-04 | 浙江大学 | Wastewater treatment system and method employing dual-chamber MFC (microbial fuel cell) combined with A/O process |
| CN104478073A (en) * | 2014-12-10 | 2015-04-01 | 广西师范大学 | Device for treating industrial wastewater difficult to biodegrade by virtue of ABR-bioelectric Fenton coupling technique |
| CN104817125A (en) * | 2015-05-14 | 2015-08-05 | 张家港市山牧新材料技术开发有限公司 | Industrial sewage treating agent |
| CN106277589A (en) * | 2016-08-25 | 2017-01-04 | 南京大学盐城环保技术与工程研究院 | A kind of system and method utilizing ferrum carbon Fenton pretreatment UBF A/O to process waste water from dyestuff |
| CN106629814A (en) * | 2017-01-23 | 2017-05-10 | 吉林大学 | Sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction |
| CN108400346A (en) * | 2018-03-11 | 2018-08-14 | 浙江大学 | A kind of preparation method of the overmolded carbon material of cuprous oxide |
| CN108328840A (en) * | 2018-04-03 | 2018-07-27 | 浙江奇彩环境科技股份有限公司 | A kind of recycling processing method of waste water from dyestuff |
| CN108585379A (en) * | 2018-05-29 | 2018-09-28 | 内蒙古科技大学 | A kind of apparatus and method improving organic wastewater with difficult degradation thereby treatment effect |
| CN110426439A (en) * | 2019-07-03 | 2019-11-08 | 淮阴工学院 | Wireless photoelectric chemistry indirect analysis detection device and preparation method thereof |
| CN110697706A (en) * | 2019-10-08 | 2020-01-17 | 北京化工大学 | Preparation method of three-dimensional biomass carbon/copper sulfide used as electrode material |
| CN112047456A (en) * | 2020-07-28 | 2020-12-08 | 国河环境研究院(南京)有限公司 | Microbial fuel cell wastewater denitrification device and method |
Non-Patent Citations (1)
| Title |
|---|
| 张芳西 等.活性炭吸附处理含酚废水实例.《含酚废水的处理与利用》.化学工业出版社,1983,第194页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112607969A (en) | 2021-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109896598B (en) | Preparation method of electro-Fenton cathode material based on carbon felt supported iron nanoparticles and application of electro-Fenton cathode material in degradation of organic pollutants in water | |
| CN106186456B (en) | Electrochemical comprehensive treatment technology for high-concentration organic wastewater hard to degrade | |
| CN103145240B (en) | Synchronous electricity generating method and device for anaerobic biological treatment of high concentrated organic wastewater | |
| CN112723492B (en) | Preparation method and application of cuprous oxide-loaded activated carbon | |
| CN110937764B (en) | Method for realizing deep decarbonization, denitrification and desulfurization by adopting UASB-SBR-EO to treat early landfill leachate | |
| CN106045198A (en) | System and method for treating polymer-containing waste water by electrocatalytic oxidation coupling biological system | |
| CN111606519A (en) | Advanced treatment method for electroplating wastewater | |
| CN104860397A (en) | Electrochemical-biological fluidized bed reactor and wastewater treatment method | |
| CN109721138A (en) | A kind of method of electric field-enhanced over cure acid group free radical processing dyeing waste water | |
| CN113582439A (en) | Iron-carbon Fenton pretreatment method for acidic high-salt high-concentration organic wastewater | |
| CN107662976B (en) | Method for efficiently and anaerobically degrading fulvic acid in leachate of waste incineration | |
| CN106587445B (en) | Pretreatment method of antibiotic production wastewater | |
| CN112499885A (en) | System and method for treating preparation wastewater by using multiphase multidimensional electrolysis pretreatment process + A/O + MBR | |
| CN112607969B (en) | Dye wastewater treatment process | |
| CN209583892U (en) | A kind for the treatment of of Perfume Wastewater processing system | |
| CN108996810B (en) | High-concentration degradation-resistant organic wastewater zero discharge system and treatment method | |
| CN111333235A (en) | Landfill leachate treatment system and process | |
| CN103739161A (en) | Low-energy-consumption degradation-resistant organic wastewater recycling method | |
| CN111115847A (en) | Denitrification method and device based on electrochemical sulfate circulation | |
| CN105936571A (en) | Method for processing polyurethane (PU) synthetic leather wastewater | |
| CN102060419A (en) | Treating process of printing and dyeing waste water | |
| CN113582465A (en) | System and method for treating high ammonia nitrogen wastewater by using diamond film electrode | |
| CN204737787U (en) | Electrochemistry - biological fluidized bed reactor | |
| CN211339214U (en) | Microbial electrolysis cell-membrane bioreactor combined treatment device for landfill leachate | |
| CN203754535U (en) | Efficient micro-electrolysis multiphase flow air flotation reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230926 Address after: 443000, Building B, Binfen Ginza, No.19 Chengdong Avenue, Yichang Area, China (Hubei) Free Trade Zone, Yichang City, Hubei Province, China (802) Applicant after: Hubei ZiNuo New Material Technology Co.,Ltd. Address before: 445000 Dongcheng Sub district Office, Lichuan City, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province, China. 3rd Floor, Unit 2, Building 1, Guotai Mingdu, Tenglong Avenue Applicant before: Hubei Zhonglai Technology Service Co.,Ltd. Effective date of registration: 20230926 Address after: 445000 Dongcheng Sub district Office, Lichuan City, Enshi Tujia and Miao Autonomous Prefecture, Hubei Province, China. 3rd Floor, Unit 2, Building 1, Guotai Mingdu, Tenglong Avenue Applicant after: Hubei Zhonglai Technology Service Co.,Ltd. Address before: 215625 Jiangsu Suzhou Zhangjiagang Jinhe Fengzhen Hexing Street Xinghuo village Shan Mu new material technology development Co., Ltd. Applicant before: ZHANGJIAGANG SHANMU NEW MATERIAL TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |