CN109626511A - Electrochemistry-light electrolysis coupling device and technology for Laboratory Waste Water Treatment - Google Patents
Electrochemistry-light electrolysis coupling device and technology for Laboratory Waste Water Treatment Download PDFInfo
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- CN109626511A CN109626511A CN201910086056.6A CN201910086056A CN109626511A CN 109626511 A CN109626511 A CN 109626511A CN 201910086056 A CN201910086056 A CN 201910086056A CN 109626511 A CN109626511 A CN 109626511A
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- waste water
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Classifications
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- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
Abstract
The present invention relates to a kind of electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device and technologies, the electrochemistry-light electrolysis coupling device includes electrochemical reaction system and micro electrolytic reaction system, by cooperateing with Electrochemical Reactor with Three-dimensional Electrode processing technique treatment of laboratory waste water using novel micro electrolysis tech, enhance the degradation capability of COD, removal ability enhancing to heavy metal, the problems such as effectively solving traditional light electrolysis there are fillers easy to harden, easy passivation, enhance the oxidation susceptibility of waste water, the decomposition process for accelerating organic matter, reduces energy consumption.
Description
Technical field
The invention belongs to chemical wastewater treatment technical fields, and in particular to a kind of electrification for Laboratory Waste Water Treatment
- light electrolysis coupling device and technology.
Background technique
Laboratory waste water refers to the comprehensive wastewater generated during teaching, scientific research, chemical examination, test etc., and specific source is
The comprehensive wastewater that the processes such as laboratory medicine, reagent, test solution, remaining reagent, container washing, instrument clean generate.
Laboratory waste water mainly have the following characteristics that (1) waste component complexity, containing lead, mercury, cadmium, Cr VI, copper, antimony,
The inorganic pollutions such as the heavy metals such as ferrous iron, aluminium, manganese and acid, alkali, nonmetallic ion, all kinds of organic pollutants and infective pathogen
The microorgranic contaminants such as body, the characteristics such as toxic, harmful with burn into.According to statistics, chemical classes, pharmacy class laboratory are related to
Reagent type can reach 6000~10000 kinds；(2) discharge of wastewater irregularities, especially R&D units, the type of discharge and
Quantity does not have regularity, does not have reproducibility, and biodegradability is poor；(3) the newly-increased discharge type of waste water is obvious, with scientific research
Movable propulsion often generates new sewage discharge object；(4) wastewater discharge increases, as country is to the power of science research input
Degree increases, and scientific research activity increases, and discharge of wastewater water increases year by year；
In view of the above feature, laboratory waste water harm mainly has the following: (1) corrosion discharge pipe network, such as acids waste water
Corrode irony sewer, organic solvent class waste water corrodes PVC pipeline；(2) contain toxic extremely toxic substance, heavy metal, difficult drop in waste water
Substance is solved, municipal sewage plant's operation is caused to impact；(3) polluter in waste water may cause two in degradation process
Secondary pollution.
Electrochemical oxidation process refers to the oxidation of the Hydroxyl radical HO by generation of discharging on anode surface, HO
Electrophilic attack is adsorbed on the organic matter on anode and oxidation reaction occurs, to remove pollutant.
Electrochemical oxidation principle is: certain functional groups of organic matter have electro-chemical activity, by the positive action of electric field,
Structure of functional groups changes, to change the chemical property of organic matter, weakens its toxicity so that disappearing, enhances biology
Degradability.Electrochemical oxidation process is broadly divided into direct oxidation method and two kinds of indirect oxidation method.Direct oxidation method is to pass through anode
Oxidation makes pollutant be converted into innocuous substance；Indirect oxidation rule is to make dirt by the intermediate reaction except anode reaction
Object oxidation is contaminated, innocuous substance is eventually converted into.
But electrochemical oxidation wastewater treatment process has the following problems: (1) soluble anodizing method electrode
Consume excessive, current efficiency is relatively low, and reactor efficiency is not high；(2) it is higher that Organic substance in water energy consumption is thoroughly decomposed with electrochemical process,
Equipment cost is also higher, this is that electrochemical process needs to overcome the problems, such as when being used alone.
Light electrolysis generates 1.2V current potential i.e. in cold situation, using the micro-electrolysis material being filled in waste water itself
Difference carries out electrolysis processing to waste water, the iron ion with flocculation being formed simultaneously.Its principle is using between iron-carbon particle
Numerous subtle primary battery is formd there is potential difference.It is based on electrochemistry, oxidationreduction, physical absorption and flocculation
The collective effect of precipitating handles waste water.With applied widely, high treating effect, long service life, at low cost, operation
The advantages such as easy to maintain.But the problems such as that there are fillers is easy to harden for traditional light electrolysis, easy passivation.
Current general municipal sewage plant does not have the treatment conditions of the processing special emission of chemical laboratory；Colleges and universities
Or R&D units, in treatment of laboratory waste water, what is generallyd use is the method for neutralization precipitation, filtering, and treatment effect is not
It is ideal.Discharge standard still is not achieved containing high concentration extremely toxic substance, hard-degraded substance etc. in treated waste water.Thus seek
A kind of method that laboratory waste water can be effectively treated is particularly important.In consideration of it, the present invention is specifically proposed.
Summary of the invention
In order to solve the above problems existing in the present technology, the present invention provides a kind of electricity for Laboratory Waste Water Treatment
Chemistry-light electrolysis coupling device and technology.Electrochemistry of the present invention-light electrolysis coupling technique, utilizes novel micro electrolysis tech
Electrochemical Reactor with Three-dimensional Electrode processing technique treatment of laboratory waste water is cooperateed with, the degradation capability of COD is enhanced, to the removal energy of heavy metal
Power enhancing, enhances the oxidation susceptibility of waste water, adds the problems such as effectively solving traditional light electrolysis there are fillers easy to harden, easy passivation
The fast decomposition process of organic matter, reduces energy consumption.
The technical scheme adopted by the invention is as follows:
A kind of electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device, including water inlet, water outlet and position
Electrolytic cell between inlet and outlet, two electrodes of the interior setting of the electrolytic cell, electrochemical reactor and light electrolysis are filled out
Material.
The electrode is three-diemsnional electrode.
The anode is titanium-based metal oxide, and the cathode is stainless steel, and the electrochemical reactor is three-dimensional fixed
Bed.
The titanium-based metal oxide is Ti/Sb-SnO2。
The micro-electrolysis stuffing is iron-carbon micro-electrolysis filler.
The iron-carbon micro-electrolysis filler is prepared by the component of following parts by weight:
Iron concentrate 50-80 parts by weight, graphite particle 10-15 parts by weight, coal dust 12-15 parts by weight, bentonite 8-10 weight
Part, sodium sulphate 8-12 parts by weight, kaolin 5-9 parts by weight, copper powder 2-5 parts by weight.
The iron-carbon micro-electrolysis filler is prepared by the component of following parts by weight:
65 parts by weight of Iron concentrate, 13 parts by weight of graphite particle, 14 parts by weight of coal dust, 9 parts by weight of bentonite, 10 weight of sodium sulphate
Measure part, 7 parts by weight of kaolin, 3.5 parts by weight of copper powder.
The partial size of the Iron concentrate is 20-50nm, and the partial size of the graphite particle is 60-80nm, the partial size of the coal dust
For 100-120nm, the bentonite and kaolinic partial size are 80-100nm, and the partial size of the copper powder is 80-100nm.
The iron-carbon micro-electrolysis filler is prepared with the following method:
(1) Iron concentrate, graphite particle, coal dust, bentonite, sodium sulphate, kaolin and copper powder are taken respectively, are sufficiently mixed
It is even, obtain mixed material；
(2) water for accounting for mixed material quality 11-15% is sprayed into step (1) described mixed material, after stirring and evenly mixing, warp
Extrusion forming obtains the Ball-type packing that partial size is 30-50mm；
(3) step (2) described Ball-type packing is placed in 100-120 DEG C of water vapour after conserving 15-25min, is dried to water
Divide less than 5%, obtains drying spherolite；
(4) keep the temperature 2-4h under the conditions of step (3) the drying spherolite being placed in 1100-1250 DEG C, after natural cooling to get
The iron-carbon micro-electrolysis filler.
Electrochemistry-light electrolysis coupling technique of Laboratory Waste Water Treatment is used for based on described device.
The invention has the benefit that
Electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device of the present invention, including electrochemical reaction
System and micro electrolytic reaction system, by cooperateing with the processing experiment of Electrochemical Reactor with Three-dimensional Electrode processing technique using novel micro electrolysis tech
Room waste water enhances the degradation capability of COD, enhances the removal ability of heavy metal, and effectively solving traditional light electrolysis, there are fillers
The problems such as easy to harden, easy passivation, enhances the oxidation susceptibility of waste water, accelerates the decomposition process of organic matter, reduces energy consumption.
Detailed description of the invention
Fig. 1 is the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device provided by one embodiment of the present invention
Perspective view；
Fig. 2 is the cross-sectional view of structure in Fig. 1.
In figure: 1- water inlet, 2- water outlet, 3- electrode, 4- electrochemical reactor, 5- micro-electrolysis stuffing, 6 power supplys.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Embodiment 1
As depicted in figs. 1 and 2, a kind of electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling is present embodiments provided
It attaches together and sets, including water inlet 1, water outlet 2 and the electrolytic cell between water inlet 1 and water outlet 2, set in the electrolytic cell
Set two electrodes 3, electrochemical reactor 4 and micro-electrolysis stuffing 5.
Electrode 3 described in the present embodiment is three-diemsnional electrode, and the anode is titanium-based metal oxide Ti/Sb-SnO2, the yin
Extremely stainless steel, the electrochemical reactor 4 are three-dimensional fixed bed.
The iron-carbon micro-electrolysis filler 5 is prepared with the following method:
(1) 50 parts by weight Iron concentrates (partial size 20-30nm), 15 parts by weight of graphite particle (partial size 60- are taken respectively
70nm), 12 parts by weight coal dusts (partial size 100-110nm), 10 parts by weight of bentonite (partial size 80-90nm), 8 parts sulfuric acids
Sodium, 9 parts by weight kaolin clay (partial size 80-90nm) and 2 parts by weight copper powders (partial size 80-90nm) are sufficiently mixed uniformly, obtain
Mixed material；
(2) water for accounting for mixed material quality 11% is sprayed into step (1) described mixed material, after stirring and evenly mixing, through squeezing
It is molded, obtain the Ball-type packing that partial size is 30mm；
(3) step (2) described Ball-type packing is placed in 100 DEG C of water vapours after conserving 25min, is dried to moisture and is less than
5%, obtain drying spherolite；
(4) step (3) the drying spherolite is placed under the conditions of 1100 DEG C and keeps the temperature 4h, to get the iron after natural cooling
Carbon micro-electrolysis filler.
Embodiment 2
Present embodiments provide a kind of electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device, including water inlet
Mouth 1, water outlet 2 and the electrolytic cell between water inlet 1 and water outlet 2, two electrodes 3 of the interior setting of the electrolytic cell, electricity
Chemical reactor 4 and micro-electrolysis stuffing 5.
Electrode 3 described in the present embodiment is three-diemsnional electrode, and the anode is titanium-based metal oxide Ti/Sb-SnO2, the yin
Extremely stainless steel, the electrochemical reactor 4 are three-dimensional fixed bed.
The iron-carbon micro-electrolysis filler 5 is prepared with the following method:
(1) 80 parts by weight Iron concentrates (partial size 40-50nm), 10 parts by weight of graphite particle (partial size 70- are taken respectively
80nm), 15 parts by weight coal dusts (partial size 110-120nm), 8 parts by weight of bentonite (partial size 90-100nm), 12 parts by weight sulphur
Sour sodium, 5 parts by weight kaolin clay (partial size 90-100nm) and 5 parts by weight copper powders (partial size 90-100nm) are sufficiently mixed uniformly,
Obtain mixed material；
(2) water for accounting for mixed material quality 15% is sprayed into step (1) described mixed material, after stirring and evenly mixing, through squeezing
It is molded, obtain the Ball-type packing that partial size is 50mm；
(3) step (2) described Ball-type packing is placed in 120 DEG C of water vapours after conserving 15min, is dried to moisture and is less than
4%, obtain drying spherolite；
(4) step (3) the drying spherolite is placed under the conditions of 1250 DEG C and keeps the temperature 2h, to get the iron after natural cooling
Carbon micro-electrolysis filler.
Embodiment 3
Present embodiments provide a kind of electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device, including water inlet
Mouth 1, water outlet 2 and the electrolytic cell between water inlet 1 and water outlet 2, two electrodes 3 of the interior setting of the electrolytic cell, electricity
Chemical reactor 4 and micro-electrolysis stuffing 5.
Electrode 3 described in the present embodiment is three-diemsnional electrode, and the anode is titanium-based metal oxide Ti/Sb-SnO2, the yin
Extremely stainless steel, the electrochemical reactor 4 are three-dimensional fixed bed.
The iron-carbon micro-electrolysis filler 5 is prepared with the following method:
(1) 65 parts by weight Iron concentrates (partial size 30-40nm), 13 parts by weight of graphite particle (partial size 65- are taken respectively
75nm), 14 parts by weight coal dusts (partial size 105-115nm), 9 parts by weight of bentonite (partial size 85-95nm), 10 parts sulfuric acids
Sodium, 7 parts by weight kaolin clay (partial size 85-95nm) and 3.5 parts by weight copper powders (partial size 85-95nm) are sufficiently mixed uniformly, obtain
To mixed material；
(2) water for accounting for mixed material quality 13% is sprayed into step (1) described mixed material, after stirring and evenly mixing, through squeezing
It is molded, obtain the Ball-type packing that partial size is 40mm；
(3) step (2) described Ball-type packing is placed in 110 DEG C of water vapours after conserving 20min, is dried to moisture and is less than
3%, obtain drying spherolite；
(4) step (3) the drying spherolite is placed under the conditions of 1175 DEG C and keeps the temperature 3h, to get the iron after natural cooling
Carbon micro-electrolysis filler.
Comparative example
Difference with embodiment 3 is only that the micro-electrolysis stuffing uses commercially available iron-carbon micro-electrolysis filler.
Experimental example
Using electrochemistry of the present invention-light electrolysis coupling device treatment of laboratory waste water, the water quality of the water in light yellow,
PH is 4.5, CODCrAbout 750mg/L, heavy metal Cr content are 550mg/kg, and waste water residence time in coupling device is
120min, applied voltage 8V, COD, heavy metal Cr content and the pH value variation of detection processing front and back water quality.
The COD, content of beary metal of table 1- water quality before and after the processing
As it can be seen from table 1 after electrochemistry of the present invention-light electrolysis coupling technique processing, under COD content is significant
Drop, 90% or more heavy metal removing rate, and it is 8.5-10.2 that pH, which is significantly increased, after processing, is formed simultaneously a large amount of precipitatings；Comparative example
After method processing, COD, heavy metal removing rate be not it is highly desirable, pH value is 7.2 after processing, compared to the method for the present invention, comparison
The treatment effect of example method is simultaneously bad, to illustrate the iron-carbon micro-electrolysis filler provided in compared with the prior art, side of the present invention
Iron-carbon micro-electrolysis filler made from method has better performance.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is all that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (10)
1. a kind of electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device, which is characterized in that including water inlet (1),
Water outlet (2) and the electrolytic cell between water inlet (1) and water outlet (2), the electrolytic cell is interior to be arranged two electrodes
(3), electrochemical reactor (4) and micro-electrolysis stuffing (5).
2. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 1, feature exist
In the electrode (3) is three-diemsnional electrode.
3. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 1, feature exist
In the anode is titanium-based metal oxide, and the cathode is stainless steel, and the electrochemical reactor (4) is three-dimensional fixed bed.
4. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 1, feature exist
In the titanium-based metal oxide is Ti/Sb-SnO2。
5. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 1, feature exist
In the micro-electrolysis stuffing (5) is iron-carbon micro-electrolysis filler.
6. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 5, feature exist
In the iron-carbon micro-electrolysis filler is prepared by the component of following parts by weight:
Iron concentrate 50-80 parts by weight, graphite particle 10-15 parts by weight, coal dust 12-15 parts by weight, bentonite 8-10 parts by weight, sulphur
Sour sodium 8-12 parts by weight, kaolin 5-9 parts by weight, copper powder 2-5 parts by weight.
7. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 6, feature exist
In the iron-carbon micro-electrolysis filler is prepared by the component of following parts by weight:
65 parts by weight of Iron concentrate, 13 parts by weight of graphite particle, 14 parts by weight of coal dust, 9 parts by weight of bentonite, 10 weight of sodium sulphate
Part, 7 parts by weight of kaolin, 3.5 parts by weight of copper powder.
8. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 5, feature exist
In the partial size of the Iron concentrate is 20-50nm, and the partial size of the graphite particle is 60-80nm, and the partial size of the coal dust is 100-
120nm, the bentonite and kaolinic partial size are 80-100nm, and the partial size of the copper powder is 80-100nm.
9. the electrochemistry for Laboratory Waste Water Treatment-light electrolysis coupling device according to claim 7 or 8, feature
It is, the iron-carbon micro-electrolysis filler is prepared with the following method:
(1) Iron concentrate, graphite particle, coal dust, bentonite, sodium sulphate, kaolin and copper powder are taken respectively, are sufficiently mixed uniformly, are obtained
To mixed material；
(2) water for accounting for mixed material quality 11-15% is sprayed into step (1) described mixed material, after stirring and evenly mixing, through squeezing
Molding obtains the Ball-type packing that partial size is 30-50mm；
(3) step (2) described Ball-type packing is placed in 100-120 DEG C of water vapour after conserving 15-25min, it is small is dried to moisture
In 5%, drying spherolite is obtained；
(4) 2-4h is kept the temperature under the conditions of step (3) the drying spherolite being placed in 1100-1250 DEG C, to get described after natural cooling
Iron-carbon micro-electrolysis filler.
10. electrochemistry-light electrolysis based on any one of claim 1-9 described device for Laboratory Waste Water Treatment couples skill
Art.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110589936A (en) * | 2019-09-02 | 2019-12-20 | 南京信息工程大学 | Photovoltaic purifying instrument based on electrolytic purification |
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Application publication date: 20190416 |