CN109502840A - A kind of pretreatment unit of industrial wastewater - Google Patents
A kind of pretreatment unit of industrial wastewater Download PDFInfo
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- CN109502840A CN109502840A CN201811376803.1A CN201811376803A CN109502840A CN 109502840 A CN109502840 A CN 109502840A CN 201811376803 A CN201811376803 A CN 201811376803A CN 109502840 A CN109502840 A CN 109502840A
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 229910052742 iron Inorganic materials 0.000 claims abstract description 52
- 230000015556 catabolic process Effects 0.000 claims abstract description 51
- 238000006731 degradation reaction Methods 0.000 claims abstract description 51
- 230000009467 reduction Effects 0.000 claims abstract description 49
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 38
- 230000003647 oxidation Effects 0.000 claims abstract description 36
- 239000000126 substance Substances 0.000 claims abstract description 25
- 239000012528 membrane Substances 0.000 claims description 28
- 229910003460 diamond Inorganic materials 0.000 claims description 25
- 239000010432 diamond Substances 0.000 claims description 25
- 229910001220 stainless steel Inorganic materials 0.000 claims description 22
- 239000010935 stainless steel Substances 0.000 claims description 22
- 239000010409 thin film Substances 0.000 claims description 20
- 239000008213 purified water Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 230000002829 reductive effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 230000005621 ferroelectricity Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000005518 electrochemistry Effects 0.000 claims 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 18
- 239000000243 solution Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000009102 absorption Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000010718 Oxidation Activity Effects 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005685 electric field effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001869 rapid Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4676—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electroreduction
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to a kind of pretreatment units of industrial wastewater, including sponge iron electrochemical reduction device, ferrate chemical oxidation device, electrochemical degradation device；Sponge iron electrochemical reduction device, ferrate chemical oxidation device are two；Water intake installs pipes and is connected with the first electrochemical degradation device and the first sponge iron electrochemical reduction；The water outlet of first electrochemical degradation device is connected with the water inlet tube of the second sponge iron electrochemical reduction device；The water outlet of first sponge iron electrochemical reduction device is connected with the water inlet tube of the second electrochemical degradation device；The water outlet of the water outlet of second electrochemical degradation device and the second sponge iron electrochemical reduction device is all connected with the water inlet tube of electrochemical degradation device.Three kinds of techniques of sponge iron electrochemical reduction ferrate chemical oxidation and BDD electrochemical degradation are combined by the present apparatus, can play the role of comprehensively handling to waste water.
Description
Technical field
The present invention relates to water treatment fields, and in particular to a kind of pretreatment unit of industrial wastewater.
Background technique
With the rapid development of industry, the type and quantity of industrial discharge waste water are quicklyd increase, the pollution to water environment
Increasingly extensively, this serious healthy living and physical safety for threatening the mankind.Industrial wastewater mainly includes that factory gives birth in processing
Waste water, sewage for being generated when production etc., wherein containing the industrial production materials, intermediate product, byproduct and the life that are lost with waste water
The pollutant generated during producing.Industrial wastewater is many kinds of, complicated component.Since the ingredient of industrial wastewater is more complicated, and portion
It is point also toxic, therefore for environmental protection, Industrial Wastewater Treatment is particularly important.
Waste water quality situation can be improved using traditional method for treating water to a certain extent, but have it is respective insufficient or
Disadvantage.Physical method is foreclosed impurity in the way of absorption, precipitating or barrier etc..As classical activated carbon adsorption can be effectively net
Change water body, but as the extension charcoal adsorption capacity of time will constantly weaken, periodically need to be cleaned and be replaced, and it can not
Organic pollutant degradation is aoxidized, thus may cause phase transfer, deteriorates problem further.Especially face the work of high concentration
More seem unable to do what one wishes when containing organic pollutant in industry waste water.Chemical method includes oxidation processes, neutralisation treatment, coagulating treatment
Deng possessing the ability for fast and effeciently removing pollutant, however be likely to occur that recycling is difficult, is easy to generate in actual operation
Secondary pollution problems.In contrast, bioanalysis becomes water process most popular at present with its economy and green environmental protection
One of technology, but when there are when hardly degraded organic substance or pollutant containing bio-toxicity, solely using Biochemical method in waste water
The waste water is difficult to obtain ideal degradation effect.
Sponge iron is in the reactor of rotary furnace, shaft furnace or other forms, by iron ore (or ferric oxide pellet) low temperature
Restore resulting low-carbon cellular product.Metal charge through crushing, magnetic separation, briquet, as smelting.This iron remains
The a large amount of micro- stomatas formed when oxygen loss, observation is similar to sponge, therefore named sponge iron under the microscope.Sponge iron main component is iron,
Its loose porous internal structure, the specific surface area provided are 5-10 times of common iron filings, oxygen and iron in water can be made to occur fast
The thorough oxidation reaction of speed, using principle of oxidation and reduction, logical filtering type is excluded except shallow lake mode.With backwash frequency
Low, the advantages that compression strength is high, not dusting, not hardened, large specific surface area, active height, favorable regeneration effect, strong reproducibility.It needs
Although it is noted that the hardened phenomenon of sponge iron is slowed down compared with iron filings, but still cannot ignore.In addition, due to sponge
The stronger reproducibility of iron, it is possible to it is reacted with the oxidative pollutant in industrial wastewater, but for the pollutant of reproducibility
Just do not have method.
Ferrate (sodium, potassium) is sexavalence molysite, and effective component is high-speed rail acid group, has very strong oxidisability, relative to
Potassium permanganate and other oxides, oxidisability are stronger.Therefore it can be carried out disinfection by oxidation.Simultaneously as reacting
Reduzate afterwards is iron hydroxide [Fe (OH)3], it is in the solution in colloid.This is a kind of inorganic flocculating agent best in quality,
Suspended matter in water can be assembled to form precipitating, can efficiently remove the fine suspended matter in water.It is demonstrated experimentally that since it is strong
Strong oxidation and flocculation collective effect, the disinfection of ferrate and scavenging effect, is better than chlorine-containing disinfectant and permanganate comprehensively.
More importantly it in the disinfection and purification process entirely to water, does not generate any substance being harmful to the human body.That is: high-speed rail
Hydrochlorate has chlorine and alum [KAl (SO simultaneously4)2 . 12H2O] purifying water effect, be a kind of novel green water purification agent.It is high
Ferrite can aoxidize most of organic matter, and have selectivity.Its standard electrode potential is under alkaline condition
0.72V is 2.20V under acid condition.Oxidation activity can be regulated and controled by adjusting the structure, pH value, cation of ferrate, into
And it realizes highly selective.In actual industrial waste water, if consider adjust pH value come cope with the waste water of various concentration can be to process bands
Carry out many difficulties, investment is returned not reciprocity with gained.In addition, due to the stronger oxidisability of ferrate, in industrial wastewater
Reductive pollutants have preferable treatment effect, but for the pollutant of oxidisability with regard to helpless.With the time
Accumulation, [Fe (OH)3] after absorption pollutant the flocculent deposit that generates can be deposited in bottom of device, wastewater flow rate is bigger, the mud of generation
Also more, this just needs highly effective matched reliable separator for removing sediment.
All kinds of method for treating water are made a general survey of, electrochemical process was due to its particular advantages by researcher's pro-gaze, reason in recent years
It is that electrochemical process uses the electronics of Environmental Safety as reactant, can avoid generating secondary pollution；Equipment is by a relatively simple,
Easily operated control not only has good treatment effect to hardly degraded organic substance, but also organic matter difficult to degrade can be made to convert
For can be with the organic matter of biochemical degradation, or the direct mineralising of the organic matter of non-biochemical degradation be made to generate CO2And H2O.It is in industrial wastewater
Processing and recycling aspect with sanitary sewage are used widely, and huge development potentiality is shown.In electrocatalytic reaction, electricity
As elctro-catalyst, different electrode materials can make electrochemical reaction rates that the variation on the order of magnitude occur, therefore select for pole
Electrode material appropriate is the effective way for improving electrochemical catalysis reaction efficiency.
Take boron-doped diamond thin-film electrode (BDD) as the cleaning equipment of core, is used for electrochemical process water as a new generation
The electrode material of processing, compared with the traditional materials such as noble metal and ti-based coating electrode (DSA), BDD electrode has best sun
Pole oxidability, widest potential window and highest current density.The sp of diamond-stable3Structure make it have it is corrosion-resistant,
The good characteristics such as high temperature resistant, anti-oxidant and resistance tocrocking.Therefore BDD electrode has extremely long service life (40-50).BDD
Electrode can be convenient bacterium, virus and the other organic matters efficiently gone in water removal, and will not generate environmentally harmful substance,
With the outstanding features such as energy-efficient, zero reagent consumption, environmentally friendly.Under DC electric field effect, BDD electrode surface can
It is 2.80V that successively generating, which has the free state hydroxy radical OH(standard oxidizing potential of superpower oxidisability, close to simple substance fluoride
The 2.87V of gas), peroxy radical HO2, ozone O3With hydrogen peroxide H2O2Equal oxide species, anti-with high-concentration industrial-water
While answering, also to various microorganisms, there is strong killing effect including bacterium and virus.
Filter-press type electrolytic cell is because its compact-sized, volume current density space-time yield height brought greatly, slot force down
Advantage is widely adopted in electrochemical industry.Traditional flat two-dimensional electrode specific surface area is smaller, mass-transfer efficiency is low, electric
It flows low efficiency and unit groove body processing wastewater flow rate is few, be difficult to generate ideal effect to wastewater degradation processing, thus actually answering
It is significantly limited in.Especially when conductivity is low, it has been difficult to breakthrough in practice.If by traditional
Flat two-dimensional electrode be changed to porous BDD electrode and can improve above situation, can promote rapids using porous BDD electrode
Stream improves mass transfer and degradation effect.
Summary of the invention
1. technical problem to be solved:
For above-mentioned status, the present invention provides a kind of by sponge iron electrochemical reduction, ferrate chemical oxidation and BDD electrification
It learns three kinds of techniques of degradation to be combined, to carry out pretreated method to industrial wastewater.The present apparatus can overcome the defect that with single
Method for treating water limitation, can be good at meeting actual needs.
2. technical solution:
A kind of pretreatment unit of industrial wastewater, including sponge iron electrochemical reduction device, ferrate chemical oxidation device；Its
It is characterized in that: further including electrochemical degradation device；The sponge iron electrochemical reduction device, ferrate chemical oxidation device are equal
It is two；Water intake installs pipes and is connected with the first electrochemical degradation device and the first sponge iron electrochemical reduction；It is described
The water outlet of first electrochemical degradation device is connected with the water inlet tube of the second sponge iron electrochemical reduction device；Described first
The water outlet of sponge iron electrochemical reduction device is connected with the water inlet tube of the second electrochemical degradation device；Second electrification
The water outlet of the water outlet and the second sponge iron electrochemical reduction device of learning decomposition apparatus all enters water with electrochemical degradation device
Mouth pipeline is connected；The water outlet of the electrochemical degradation device is the water outlet of purified water.
Further, the sponge iron electrochemical reduction device includes reduction apparatus shell；Dress inside the reduction apparatus
There is filler sponge iron；Filler feeding port is arranged in the reduction apparatus cover top portion.
Further, the ferrate chemical oxidation device includes that oxidation unit shell, shower nozzle, ferrate are molten
The storage bin and control flow apparatus of liquid；The shower nozzle is located at oxidation unit inner cavity upper top and sprays ferrate downwards
Solution；The shower is connected by pipeline with the storage bin for the ferrate solution being located at outside oxidation unit；The control stream
Amount device is mounted on the pipeline between connecting sprinkler and storage bin.Wherein control flow apparatus can select flow control valve.
Further, the ferrate chemical oxidation bottom of device also sets up aerator and mud special centrifugal machine.
Further, the electrochemical degradation device includes cylindrical shell, at least one piece of boron-doped diamond thin-film electrode
BDD anode plate, at least one piece of Thin Stainless Steel membrane electrode SS cathode plate；The cylindrical shell is shape placement of droping to the ground；The electrification
The water inlet for learning decomposition apparatus is located at columned left side；The water outlet of the electrochemical degradation device, that is, purified water water outlet
Positioned at columned right side；The boron-doped diamond thin-film electrode BDD anode plate, Thin Stainless Steel membrane electrode SS cathode plate are
Thin web that is parallel with left side and being fixedly mounted on inside sidewalls；It is the boron-doped diamond thin-film electrode BDD anode plate, stainless
The thickness of steel membrane electrode SS cathode plate is 2 millimeters；The boron-doped diamond thin-film electrode BDD anode plate, stainless steel film
The surface of electrode SS cathode plate is respectively provided with the through-hole of array arrangement；The wherein through-hole of boron-doped diamond thin-film electrode BDD anode plate
Every row is gradually increased from top to bottom in aperture；Every row is gradually from top to bottom for the through-hole aperture of the Thin Stainless Steel membrane electrode SS cathode plate
Reduce.
Further, the row of the boron-doped diamond thin-film electrode BDD anode plate and Thin Stainless Steel membrane electrode SS cathode plate
It is classified as and is successively alternately arranged.
Further, the boron-doped diamond thin-film electrode BDD anode plate passes through with Thin Stainless Steel membrane electrode SS cathode plate
The anode of industrial power of the interface of cylindrical shell outside device is set, cathode is connected.
Further, the water outlet of the first electrochemical degradation device and entering for the second sponge iron electrochemical reduction device are connected
Pressure pump is set on the pipeline at the mouth of a river；The water outlet and the second electrochemical degradation for connecting the first sponge iron electrochemical reduction device fill
Pressure pump is set on the pipeline for the water inlet set.
Further, the water intake and purified water water outlet are respectively provided with valve.
3. the utility model has the advantages that
(1) three kinds of sponge iron electrochemical reduction, ferrate chemical oxidation and BDD electrochemical degradation techniques are carried out in the present apparatus
Combination, can play the role of waste water comprehensively to handle.It therefore by the water that present apparatus water outlet is discharged is attached together by group
The complete purified water of processing is set, neighbouring rivers and lakes can be directly discharged to.
(2) due in the present apparatus being BDD membrane electrode, which has extremely strong corrosion resistance, contamination resistance
And self is purified and repair ability, so decomposition apparatus has extremely long working life and extremely strong ability to work.
(3) due to industrial wastewater complicated component, organic pollutant that is easy to oxidize and being easy reduction coexists in waste water system
In, used parallel processing methods can play sponge iron electrochemical reducing to the present invention to the greatest extent in response to this
With the advantage of two kinds of technique of ferrate chemical oxidization method.
(4) whole device structure is simple, easy to use, when carrying out industrial wastewater pretreatment, easy to operate, time saving province
It is power, scientific and efficient.
Detailed description of the invention
Fig. 1 is the overall structure schematic diagram of the present apparatus；
Fig. 2 is the aerator top view of ferrate chemical oxidation device in the present apparatus；
Fig. 3 is the arrays of openings signal of the boron-doped diamond thin-film electrode BDD anode plate in the present apparatus in electrochemical degradation device
Figure；
Fig. 4 is the arrays of openings schematic diagram of the Thin Stainless Steel membrane electrode SS cathode plate in the present apparatus in electrochemical degradation device.
Description of symbols: sponge iron electrochemical reduction device A1；Ferrate chemical oxidation device A2；Electrochemical degradation
Device A3；Water intake 1；Valve 2；Sponge iron 3；Filler feeding port 4；Pressure pump 5；Shower nozzle 6；Flange 7；Control flow
Device 8；The storage bin 9 of ferrate solution；Aerator 10；Aeration pump 11；Mud special centrifugal machine 12；Boron-doped diamond is thin
Membrane electrode BDD anode plate 23；Diamond film electrode BDD anode plate interface 24；Thin Stainless Steel membrane electrode SS cathode plate 25；It is stainless
Steel membrane electrode SS cathode plate interface 26.
Specific embodiment
The present invention is specifically described with reference to the accompanying drawing.
It is as shown in Fig. 1: a kind of pretreatment unit of industrial wastewater, including sponge iron electrochemical reduction device A1, high-speed rail
Hydrochlorate chemical oxidation device A2；It is characterized by also including electrochemical degradation device A3；The sponge iron electrochemical reduction dress
It sets, ferrate chemical oxidation device is two；Water intake 1 and the first electrochemical degradation device and the first sponge ferroelectricity
Electronation installs pipes connected；The water outlet of first electrochemical degradation device and the second sponge iron electrochemical reduction device
Water inlet tube be connected；The water outlet of the first sponge iron electrochemical reduction device enters with the second electrochemical degradation device
Mouth of a river pipeline is connected；The water outlet of the water outlet of second electrochemical degradation device and the second sponge iron electrochemical reduction device
All it is connected with the water inlet tube of electrochemical degradation device；The water outlet 28 of the electrochemical degradation device is going out for purified water
The mouth of a river.
Further, the sponge iron electrochemical reduction device includes reduction apparatus shell；Dress inside the reduction apparatus
There is filler sponge iron 3；Filler feeding port 4 is arranged in the reduction apparatus cover top portion.
Further, the ferrate chemical oxidation device includes oxidation unit shell, shower nozzle 6, ferrate
The storage bin 9 and control flow apparatus 8 of solution；The shower nozzle is located at oxidation unit inner cavity upper top and sprays high-speed rail downwards
Acid salt solution；The shower is connected by pipeline with the storage bin for the ferrate solution being located at outside oxidation unit；The control
Flow apparatus processed is mounted on the pipeline between connecting sprinkler and storage bin.Wherein in figure 7 be flange.
Further, the ferrate chemical oxidation bottom of device also sets up aerator 10 and mud special centrifugal machine
12.The vent arrangement of aerator 10 is as shown in Fig. 2.Wherein 11 in figure are aeration pump.
Further, the electrochemical degradation device includes cylindrical shell, at least one piece of boron-doped diamond thin-film electrode
BDD anode plate 23, at least one piece of Thin Stainless Steel membrane electrode SS cathode plate 25；The cylindrical shell is shape placement of droping to the ground；It is described
The water inlet of electrochemical degradation device is located at columned left side；Water outlet, that is, purified water of the electrochemical degradation device goes out
The mouth of a river is located at columned right side；The boron-doped diamond thin-film electrode BDD anode plate, Thin Stainless Steel membrane electrode SS cathode plate
It is thin web that is parallel with left side and being fixedly mounted on inside sidewalls；The boron-doped diamond thin-film electrode BDD anode plate,
The thickness of Thin Stainless Steel membrane electrode SS cathode plate is 2 millimeters；The boron-doped diamond thin-film electrode BDD anode plate, stainless steel
The surface of membrane electrode SS cathode plate is respectively provided with the through-hole of array arrangement；Wherein boron-doped diamond thin-film electrode BDD anode plate
Every row is gradually increased through-hole aperture from top to bottom；The through-hole aperture of the Thin Stainless Steel membrane electrode SS cathode plate every row from top to bottom
It is gradually reduced.As shown in attached drawing 3,4.What is provided in figure is the schematic diagram using four electrode plates.It according to the actual needs can be with
Increase the number of electrode plate.
Further, the row of the boron-doped diamond thin-film electrode BDD anode plate and Thin Stainless Steel membrane electrode SS cathode plate
It is classified as and is successively alternately arranged.
Further, the boron-doped diamond thin-film electrode BDD anode plate passes through with Thin Stainless Steel membrane electrode SS cathode plate
The anode of industrial power of the interface 24,26 of cylindrical shell outside device is set, cathode is connected.
Further, the water outlet of the first electrochemical degradation device and entering for the second sponge iron electrochemical reduction device are connected
Pressure pump 5 is set on the pipeline at the mouth of a river；Connect the water outlet and the second electrochemical degradation of the first sponge iron electrochemical reduction device
Pressure pump 5 is set on the pipeline of the water inlet of device.
Further, the water intake and purified water water outlet are respectively provided with valve 2.
Use a kind of above-mentioned high-efficiency pretreatment method progress pretreated step of industrial wastewater (such as attached drawing 1 of industrial wastewater
It is shown):
Step 1: industrial wastewater mixes in waste water runoff investigation pond, the valve of control water intake is opened, one in waste water one
Reduction apparatus and oxidation unit are respectively enterd outside.
Step 2: pressure pump is opened in the inside after spongy iron reducing, waste water enters oxidation unit；The opening of outside is sprayed
Device sprays the K of debita spissitudo2FeO4Solution then opens aerator, sinks for suspended substance in anti-locking apparatus, reinforces dress
Interior industrial wastewater is set to contact with K2FeO4 solution and dissolved oxygen.Pressure pump is opened after oxidation, waste water enters reduction apparatus.
Step 3: entering oxidation unit and the identical operation of reduction apparatus with waste water in step 2.
Step 4: two waste water by redox reaction converge mixing, into decomposition apparatus.By BDD anode and SS
Cathode is separately connected the positive and negative anodes of industrial power.
Step 5: BDD electrode surface can successively generate the free state with superpower oxidisability under electric field action
Hydroxy radical OH, industrial wastewater obtain adequately purifying degradation treatment.
Step 6: opening purified water outlet valve 2, handles complete purified water and be discharged from water outlet.
Although the present invention has been described by way of example and in terms of the preferred embodiments, they be not it is for the purpose of limiting the invention, it is any ripe
This those skilled in the art is practised, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, therefore guarantor of the invention
Shield range should be subject to what claims hereof protection scope was defined.
Claims (9)
1. a kind of pretreatment unit of industrial wastewater, including sponge iron electrochemical reduction device, ferrate chemical oxidation device；
It is characterized by also including electrochemical degradation devices；The sponge iron electrochemical reduction device, ferrate chemical oxidation device
It is two；Water intake installs pipes with the water inlet of the first electrochemical degradation device and the first sponge iron electrochemical reduction
Water inlet be connected；The water inlet of the water outlet of first electrochemical degradation device and the second sponge iron electrochemical reduction device
Pipeline is connected；The water outlet of the first sponge iron electrochemical reduction device and the water inlet tube of the second electrochemical degradation device
It is connected；The water outlet of the water outlet of second electrochemical degradation device and the second sponge iron electrochemical reduction device all with electrification
The water inlet tube for learning decomposition apparatus is connected；The water outlet of the electrochemical degradation device is the water outlet of purified water.
2. a kind of pretreatment unit of industrial wastewater according to claim 1, it is characterised in that: the sponge iron electrochemistry
Reduction apparatus includes reduction apparatus shell；Filler sponge iron is housed inside the reduction apparatus；The reduction apparatus cover top portion
Filler feeding port is set.
3. a kind of pretreatment unit of industrial wastewater according to claim 1, it is characterised in that: the ferrate chemistry
Oxidation unit includes oxidation unit shell, shower nozzle, the storage bin of ferrate solution and control flow apparatus；The flower
It spills spray head and is located at the upper top of oxidation unit inner cavity and spray ferrate solution downwards；The shower is by pipeline and is located at oxidation
The storage bin of ferrate solution outside device is connected；The control flow apparatus is mounted between connecting sprinkler and storage bin
Pipeline on.
4. a kind of pretreatment unit of industrial wastewater according to claim 3, it is characterised in that: the ferrate chemistry
Oxidation unit bottom also sets up aerator and mud special centrifugal machine.
5. a kind of pretreatment unit of industrial wastewater according to claim 1, it is characterised in that: the electrochemical degradation dress
It sets including cylindrical shell, at least one piece of boron-doped diamond thin-film electrode BDD anode plate, at least one piece of Thin Stainless Steel membrane electrode SS
Cathode plate；The cylindrical shell is shape placement of droping to the ground；The water inlet of the electrochemical degradation device is located at columned left end
Face；The water outlet of the electrochemical degradation device, that is, purified water water outlet is located at columned right side；The boron-doped diamond
Membrane electrode BDD anode plate, Thin Stainless Steel membrane electrode SS cathode plate are parallel with left side and are fixedly mounted on inside sidewalls
Thin web；The boron-doped diamond thin-film electrode BDD anode plate, Thin Stainless Steel membrane electrode SS cathode plate thickness be 2 milli
Rice；The boron-doped diamond thin-film electrode BDD anode plate, Thin Stainless Steel membrane electrode SS cathode plate surface be respectively provided with array arrangement
Through-hole；Wherein every row is gradually increased the through-hole aperture of boron-doped diamond thin-film electrode BDD anode plate from top to bottom；It is described stainless
Every row is gradually reduced the through-hole aperture of steel membrane electrode SS cathode plate from top to bottom.
6. a kind of pretreatment unit of industrial wastewater according to claim 5, it is characterised in that: the boron-doped diamond is thin
Membrane electrode BDD anode plate is arranged as successively being alternately arranged with Thin Stainless Steel membrane electrode SS cathode plate.
7. a kind of pretreatment unit of industrial wastewater according to claim 5, it is characterised in that: the boron-doped diamond is thin
Membrane electrode BDD anode plate and Thin Stainless Steel membrane electrode SS cathode plate pass through the interface that cylindrical shell is arranged in respectively at outside device
Anode, the cathode of the industrial power in portion are connected.
8. a kind of pretreatment unit of industrial wastewater according to claim 1, it is characterised in that: connection the first electrochemistry drop
It solves and pressure pump is set on the pipeline of the water outlet of device and the water inlet of the second sponge iron electrochemical reduction device；The first sea of connection
Pressure pump is set on the pipeline of the water inlet of the water outlet and the second electrochemical degradation device of continuous ferroelectricity electronation device.
9. a kind of pretreatment unit of industrial wastewater according to claim 1, it is characterised in that: the water intake with
Purified water water outlet is respectively provided with valve.
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| CN201811376803.1A CN109502840A (en) | 2018-11-19 | 2018-11-19 | A kind of pretreatment unit of industrial wastewater |
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Cited By (1)
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| CN116121776A (en) * | 2022-12-09 | 2023-05-16 | 同济大学 | Method for preparing ferrate by double-anode in-situ electrolysis |
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