CN107673522A - A kind of coked waste water deep treatment method - Google Patents

A kind of coked waste water deep treatment method Download PDF

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Publication number
CN107673522A
CN107673522A CN201711139430.1A CN201711139430A CN107673522A CN 107673522 A CN107673522 A CN 107673522A CN 201711139430 A CN201711139430 A CN 201711139430A CN 107673522 A CN107673522 A CN 107673522A
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waste water
coked waste
internal
circulation type
type iron
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韩严和
张雷
刘美丽
齐蒙蒙
张思韬
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Beijing Institute of Petrochemical Technology
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Beijing Institute of Petrochemical Technology
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/46176Galvanic cells
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/467Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/04Flow arrangements
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

The invention discloses a kind of coked waste water deep treatment method, and for carrying out deep purifying processing to the coked waste water after coagulating kinetics, it is specifically included:The pH value of coked waste water after coagulating kinetics is adjusted to 2~4, internal-circulation type iron-carbon micro-electrolysis reactor is passed through again carries out purified treatment, the hydraulic detention time of the internal-circulation type iron-carbon micro-electrolysis reactor is 60~120min, then pass in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min.The present invention not only can reach the effluent quality after processing《Coking chemistry emission of industrial pollutants standard》The in line standard of (GB16171 2012), and stable effluent quality, processing cost are low, therefore can be that income improves in enterprise.

Description

A kind of coked waste water deep treatment method
Technical field
The present invention relates to coked waste water advanced treating field, more particularly to a kind of coked waste water deep treatment method.
Background technology
In recent years, China's coalification Industry Quick Development, is counted according to State Statistics Bureau, and coke output in 2015 is up to 4.48 Hundred million tons.However, as the fast development of coalification industry, the pollution becoming serious of coked waste water, China's coked waste water are annual About 300,000,000 tons of discharge capacity.Coked waste water is a kind of containing the highly concentrated of tens kinds of pollutants such as ammonia nitrogen, phenols, cyanide, polycyclic aromatic hydrocarbon Degree, difficult degradation, highly toxic production waste;If these coked waste waters are dealt with improperly, then will be to natural, ecological and biology Living zone carrys out serious negative effect.With the environmental consciousness of the mankind enhancing and pollutant emission system it is perfect, 2015 State Council formally gives an written reply and disclosed《Water prevention and cure of pollution action plan》, wherein highlighting in industrial wastewater, sewage disposal, control Pollutant emission etc. carries out strength supervision and administered, and for some areas of current China and enterprise's aquatic environments are poor, work The problems such as industry hidden danger is more are strictly renovated.The pollution condition being on the rise for coked waste water, China has promulgated newly within 2012 's《Coking chemistry emission of industrial pollutants standard》(GB16171-2012), wherein to CODcr, ammonia nitrogen, 14 pollutions such as volatile phenol The discharge standard of index is made that regulation --- CODcrIn line standard strictly control is strict for 80mg/L, the in line standard of ammonia nitrogen It is 0.30mg/L that the in line standard controlled as 10mg/L, volatile phenol, which strictly controls,.How while coke chemicals yield is ensured, The water quality index of coked waste water is set to meet that the requirement in discharge standard turns into Important Problems of concern.
At present, coked waste water treatment plant uses with the sewage disposal technology that " biochemistry+coagulating sedimentation " is core mostly, i.e., burnt Change sewage and first carry out biochemical treatment, then carry out coagulating kinetics.Because the biochemical treatment of routine can only degrade in coked waste water Part small molecule organic pollution, therefore its effluent color dilution of the coked waste water after coagulating kinetics and COD on this basiscr (CODcrAbout 150~180mg/L) GB16171-2012 in line standard is still unable to reach, its main cause is this mixed Still there is the macromolecular of a variety of hardly-biodegradables such as indoles, carbazole, quinoline is organic in coked waste water after solidifying precipitation process Pollutant, it is therefore desirable to further purified treatment is carried out using coked waste water further treatment technique after coagulating kinetics. In the prior art, conventional coked waste water further treatment technique mainly include high-level oxidation technology, film process, physisorphtion, Chemical reagent, enhanced biological technology law, ozone+BAF (BAF) etc., but these coked waste water further treatment techniques will High treating effect but processing cost costliness, or processing cost is low but treatment effect is not up to standard, therefore it is badly in need of one kind and is processed into This low and up to standard stable effluent quality coked waste water deep treatment method.
The content of the invention
For above-mentioned weak point of the prior art, the invention provides a kind of coked waste water deep treatment method, no Only can reach the effluent quality after processing《Coking chemistry emission of industrial pollutants standard》(GB16171-2012) in line Standard, and stable effluent quality, processing cost are low, therefore can be that income improves in enterprise.
The purpose of the present invention is achieved through the following technical solutions:
A kind of coked waste water deep treatment method, for being carried out to the coked waste water after coagulating kinetics at deep purifying Reason, including:The pH value of coked waste water after coagulating kinetics is adjusted to 2~4, then to be passed through internal-circulation type iron-carbon micro-electrolysis anti- Device is answered to carry out purified treatment, the hydraulic detention time of the internal-circulation type iron-carbon micro-electrolysis reactor is 60~120min, then It is passed through in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min.
Preferably, in the internal-circulation type iron-carbon micro-electrolysis reactor, the volume ratio of iron filings and activated carbon is 1:3~3:1.
Preferably, the internal-circulation type iron-carbon micro-electrolysis reactor is aerated using air, aeration quantity be 0.1~ 0.25m3/h。
Preferably, the concentration of the coked waste water after the coagulating kinetics is less than 200mg/L.
Preferably, it is the H that concentration is 10% to adjust the acid used in pH value2SO4
Preferably, it is the KOH or NaOH that concentration is 10% to adjust the alkali used in pH value.
As seen from the above technical solution provided by the invention, coked waste water deep treatment method provided by the invention will After the pH value of coked waste water after coagulating kinetics is adjusted to 2~4, it is passed through in internal-circulation type iron-carbon micro-electrolysis reactor and carries out Purified treatment;Up-flow area and Jiang Liu areas are divided into internal-circulation type iron-carbon micro-electrolysis reactor, by controlling aeration quantity and iron Carbon filling material ratio, oxidizing process and the reduction for separating progress can be realized simultaneously in internal-circulation type iron-carbon micro-electrolysis reactor Process, as sewage circulates in up-flow area and Jiang Liu areas, redox alternate cycles processing, so as to organic high in sewage Molecular contaminants form the intermediate of small molecule by redox, and some chromophoric groups are reduced and decolourized, hardly possible drop Solution pollutant is changed into degradable material, and the biodegradability of sewage greatly improved in this.And internal-circulation type iron-carbon micro-electrolysis reacts The water outlet of device staticly settles in the basic conditions, forms hydroxide colloid, and the effect of this colloid adsorption-flocculation is much better than one As flocculant, there is good decolouring, dephosphorization, sterilize and remove removing heavy metals, this is further dropped coked waste water Solution, so that the water outlet after final process reaches the in line standard in GB16171-2012.It can be seen that coking provided by the invention is dirty Method for deeply treating water not only can reach the effluent quality after processing《Coking chemistry emission of industrial pollutants standard》 (GB16171-2012) in line standard, and stable effluent quality, processing cost are low, therefore can be that income improves in enterprise.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment Accompanying drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings Accompanying drawing.
Fig. 1 provides the schematic flow sheet of coked waste water deep treatment method for the embodiment of the present invention.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on this The embodiment of invention, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to protection scope of the present invention.
Coked waste water deep treatment method provided by the present invention is described in detail below.In the embodiment of the present invention not The content being described in detail belongs to prior art known to professional and technical personnel in the field.
As shown in figure 1, a kind of coked waste water deep treatment method, for being carried out to the coked waste water after coagulating kinetics Deep purifying processing, it is specifically included:The pH value of coked waste water after coagulating kinetics is adjusted to 2~4, then is passed through interior follow Ring type iron-carbon micro-electrolysis reactor carries out purified treatment, and the hydraulic detention time of the internal-circulation type iron-carbon micro-electrolysis reactor is 60~120min, then pass in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min.
Wherein, the coked waste water deep treatment method can include embodiment in detail below:
(1) the coked waste water COD after the coagulating kineticscrLess than 200mg/L, preferably 150~180mg/L.
(2) the internal-circulation type iron-carbon micro-electrolysis reactor can use Patent No. ZL201510550165.0 China Internal-circulation type iron-carbon micro-electrolysis reactor disclosed in patent;The inside of this internal-circulation type iron-carbon micro-electrolysis reactor use every Space in reactor is divided into up-flow area and Jiang Liu areas by stream baffle plate, and is risen in up-flow area by aeration, and is flowed in drop Decline in area by pressure itself difference, circulated so as to form inside reactor, it is net to coked waste water progress depth to realize Change is handled.
(3) in the internal-circulation type iron-carbon micro-electrolysis reactor, the volume ratio of iron filings and activated carbon can be 1:3~3:1, But preferably 1:1, it is 1 in iron charcoal volume ratio:When 1, iron charcoal is former in the reaction system of the internal-circulation type iron-carbon micro-electrolysis reactor Number of battery cells reaches maximum, and this is advantageous to the progress of galvanic interaction, lifts the clean-up effect to coked waste water.In practical application In, the iron filings can use the waste and old iron filings of factory, and this can realize twice laid so that the internal-circulation type iron-carbon micro-electrolysis Reactor turns into energy saving and environment friendly reactor.
(4) the up-flow area of the internal-circulation type iron-carbon micro-electrolysis reactor can be aerated using air, and aeration quantity is best For 0.1~0.25m3/ h, this can provide circulation power for reactor, can not only the effectively save energy, and reduce and fill out The phenomenon of flitch knot.In the internal-circulation type iron-carbon micro-electrolysis reactor, in the presence of oxygen, it can effectively increase electrode potential Difference, promote electrode reaction, so as to improve the dirty water decontamination handles;But if aeration quantity is excessive will to cause electrode separation, reduce Galvanic cell number, it is unfavorable for the progress of reaction, therefore the dissolving oxygen demand control in electrolyte can just carry within the specific limits High reaction effect.
(5) H that concentration is 10% can be utilized2SO4The pH value of coked waste water after coagulating kinetics is adjusted to 2~ 4, but preferably 2.3, under this acid condition, in the internal-circulation type iron-carbon micro-electrolysis reactor caused by electrode reaction Fe with very Strong oxdiative reducing power2+[H] can be to some chromophoric groups in coked waste water (such as:Nitro, nitroso, carboxylic Base etc.) and the progress redox of heterocyclic polymer organic pollutant, to improve the biodegradability of coked waste water.
(6) after the reaction in sedimentation basin, alkali can be utilized by the pH of the internal-circulation type iron-carbon micro-electrolysis reactor water outlet Value is adjusted to 8~9, and the alkali can use concentration as 10% KOH or NaOH, the Fe after adjustment in sewage2+And Fe3+Can shape Into the hydroxide colloid with very high absorption, flocculation, it can adsorb chromophoric group and macromolecule organic formed it is heavy Form sediment, so as to which further coked waste water be degraded.Internal-circulation type iron-carbon micro-electrolysis reactor water outlet is adjusted to 8~9 in pH value Afterwards, 30min is staticly settled, its water outlet can reach below 80mg/L (i.e. in line standard in GB16171-2012), and go out Water quality stabilizing.The iron cement precipitated in reaction final settling tanks can be discharged periodically or non-periodically.
(7) hydraulic detention time of the internal-circulation type iron-carbon micro-electrolysis reactor is preferably 60~120min, and this is not only It can ensure that wastewater treatment efficiency tends towards stability, and save the energy.
Specifically, the principle of coked waste water deep treatment method provided by the present invention is as follows:After coagulating kinetics Coked waste water is passed through in the internal-circulation type iron-carbon micro-electrolysis reactor after pH value is adjusted to 2~4, and with iron filings and activated carbon Filler contacts;, can be micro- in the internal-circulation type iron carbon by controlling the volume ratio of iron-carbon filling material, aeration quantity and the pH value of sewage The up-flow area of electrolysis reactor and Jiang Liu areas form zoneofoxidation and reducing zone.Up-flow carries out Air Exposure, shape at room temperature in area Into zoneofoxidation, so as to which chain-scission degradation occurs herein for some organic macromolecules in sewage, with H+Consumption OH-Increase, formed Hydroxide colloid start absorption, flocculation part pollutant;And after the sewage after aoxidizing enters Jiang Liu areas, at aeration Manage (i.e. oxygen free condition), decline by pressure itself difference, form reducing zone, so as to the very strong Fe of reducing power2+And [H] is herein Organic macromolecule containing groups such as carboxyl, aldehyde radical, azo group, nitrosos in sewage is carried out into reduction makes its decolouring;Namely Say, the oxidizing process and reduction process to sewage are realized and separated simultaneously in the internal-circulation type iron-carbon micro-electrolysis reactor To carry out, as sewage circulates in up-flow area and Jiang Liu areas, redox alternate cycles processing, so as to organic in sewage Macromolecule pollutant forms the intermediate of small molecule by redox, and some chromophoric groups are reduced and decolourized, difficult Degradation of contaminant is changed into degradable material, and the biodegradability of sewage greatly improved in this.The internal-circulation type iron-carbon micro-electrolysis Chemical reaction in reactor involved by galvanic interaction is:
Anode:Fe-2e→Fe2+ E(Fe/Fe2+)=0.4V
Negative electrode:2H++2e→2[H]→H2 E(H+/H2)=0V
In the presence of aerobic, cathode reaction is as follows:
O2+4H++4e→2H2O E(O2)=1.23V
O2+2H2O+4e→4OH- E(O2/OH-)=0.41V
PH value is first adjusted to 8~9 by the water outlet of internal-circulation type iron-carbon micro-electrolysis reactor, then staticly settles 30min, so as to Fe in sewage2+And Fe3+It can be formed with very high absorption, the hydroxide colloid of flocculation, it can adsorb chromophoric group And macromolecule organic forms precipitation, so as to which further coked waste water be degraded.
Compared with prior art, coked waste water deep treatment method provided by the present invention at least possesses advantages below:
(1) compared with coked waste water further treatment technique of the prior art, coked waste water depth provided by the present invention Processing method, significant advantage is respectively provided with wastewater treatment efficiency and processing cost.Coked waste water depth provided by the present invention In processing method, iron filings used in internal-circulation type iron-carbon micro-electrolysis reactor can use the waste and old iron filings of factory, and and unselected With high cost reagent and height into present treatment material, therefore cost is greatly reduced, saved resource, while sewage is also realized Qualified discharge.
(2) compared with coked waste water further treatment technique of the prior art, coked waste water depth provided by the present invention Processing method is using the macromolecule organic in coked waste water as electron acceptor, and using iron filings as electron donor, nothing is formd with iron charcoal Number galvanic cell, forms the Fe with very Strong oxdiative reducing power in acid condition2+[H] is organic to macromolecule in coked waste water Thing and chromophoric group are degraded, so as to which the biodegradability of sewage and wastewater treatment efficiency greatly improved.
(3) in coked waste water deep treatment method provided by the present invention, internal-circulation type iron-carbon micro-electrolysis reactor is made Water outlet forms hydroxide colloid in the basic conditions, and the effect of this colloid adsorption-flocculation is much better than general flocculant, has Good decolouring, dephosphorization, the effect for sterilizing and going removing heavy metals, so as to which further coked waste water be degraded.
(4) the water outlet COD of domestic general coagulative precipitation tankcrLess than the 200mg/L (coked waste waters i.e. after coagulating kinetics CODcrLess than 200mg/L), after being handled using coked waste water deep treatment method provided by the present invention it, water outlet can To reach below 80mg/L (i.e. in line standard in GB16171-2012), and stable effluent quality, operating cost are substantially low In coked waste water further treatment technique of the prior art, therefore enterprise income can be significantly improved.
As fully visible, the embodiment of the present invention not only can reach the effluent quality after processing《Coking chemistry industrial pollution Thing discharge standard》(GB16171-2012) in line standard, and stable effluent quality, processing cost are low, therefore can be enterprise Industry improves income.
In order to more clearly from show technical scheme provided by the present invention and caused technique effect, below with tool The coked waste water deep treatment method that body embodiment is provided the embodiment of the present invention is described in detail.
Embodiment 1
A kind of coked waste water deep treatment method, for dirty for the coking after 200mg/L coagulating kinetics to COD concentration Water carries out deep purifying processing, and it is specifically included:The pH value of coked waste water after coagulating kinetics is adjusted to 3.2, then led to Enter internal-circulation type iron-carbon micro-electrolysis reactor and carry out purified treatment, in the internal-circulation type iron-carbon micro-electrolysis reactor, iron filings and work Property charcoal volume ratio be 1:1,0.1~0.25m of aeration quantity3/ h, reaction temperature are room temperature, and hydraulic detention time is 60~120min; Then pass in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min, that is, obtains water outlet.
Specifically, using the water outlet obtained by the coked waste water deep treatment method of the offer of the embodiment of the present invention 1, its COD For 59.66mg/L, reach GB16171-2012 in line standard, and COD clearances are 70.17%, and chroma removal rate can Up to 93.75%;As can be seen here, the coked waste water deep treatment method that the embodiment of the present invention 1 provides can effectively remove coking dirt The COD and colourity of water.
Embodiment 2
A kind of coked waste water deep treatment method, for dirty for the coking after 180mg/L coagulating kinetics to COD concentration Water carries out deep purifying processing, and it is specifically included:The pH value of coked waste water after coagulating kinetics is adjusted to 3.2, then led to Enter internal-circulation type iron-carbon micro-electrolysis reactor and carry out purified treatment, in the internal-circulation type iron-carbon micro-electrolysis reactor, iron filings and work Property charcoal volume ratio be 1:1,0.1~0.25m of aeration quantity3/ h, reaction temperature are room temperature, and hydraulic detention time is 60~120min; Then pass in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min, that is, obtains water outlet.
Specifically, using the water outlet obtained by the coked waste water deep treatment method of the offer of the embodiment of the present invention 2, its COD For 57.22mg/L, reach GB16171-2012 in line standard, and COD clearances are 68.21%, and chroma removal rate can Up to 91.25%;As can be seen here, the coked waste water deep treatment method that the embodiment of the present invention 2 provides can effectively remove coking dirt The COD and colourity of water.
Embodiment 3
A kind of coked waste water deep treatment method, for dirty for the coking after 150mg/L coagulating kinetics to COD concentration Water carries out deep purifying processing, and it is specifically included:The pH value of coked waste water after coagulating kinetics is adjusted to 3.2, then led to Enter internal-circulation type iron-carbon micro-electrolysis reactor and carry out purified treatment, in the internal-circulation type iron-carbon micro-electrolysis reactor, iron filings and work Property charcoal volume ratio be 1:1,0.1~0.25m of aeration quantity3/ h, reaction temperature are room temperature, and hydraulic detention time is 60~120min; Then pass in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min, that is, obtains water outlet.
Specifically, using the water outlet obtained by the coked waste water deep treatment method of the offer of the embodiment of the present invention 3, its COD For 69.47mg/L, reach GB16171-2012 in line standard, and COD clearances are 64.93%, and chroma removal rate can Up to 90.12%;As can be seen here, the coked waste water deep treatment method that the embodiment of the present invention 3 provides can effectively remove coking dirt The COD and colourity of water.
As fully visible, the embodiment of the present invention not only can reach the effluent quality after processing《Coking chemistry industrial pollution Thing discharge standard》(GB16171-2012) in line standard, and stable effluent quality, processing cost are low, therefore can be enterprise Industry improves income.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can readily occur in, It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims Enclose and be defined.

Claims (6)

  1. A kind of 1. coked waste water deep treatment method, for being carried out to the coked waste water after coagulating kinetics at deep purifying Reason, it is characterised in that including:The pH value of coked waste water after coagulating kinetics is adjusted to 2~4, then is passed through internal-circulation type Iron-carbon micro-electrolysis reactor carries out purified treatment, the hydraulic detention time of the internal-circulation type iron-carbon micro-electrolysis reactor for 60~ 120min, then pass in reaction final settling tanks, pH value is adjusted to 8~9, staticly settles 30min.
  2. 2. coked waste water deep treatment method according to claim 1, it is characterised in that the micro- electricity of internal-circulation type iron carbon Solve in reactor, the volume ratio of iron filings and activated carbon is 1:3~3:1.
  3. 3. coked waste water deep treatment method according to claim 1 or 2, it is characterised in that the internal-circulation type iron carbon Micro-electrolysis reactor is aerated using air, and aeration quantity is 0.1~0.25m3/h。
  4. 4. coked waste water deep treatment method according to claim 1 or 2, it is characterised in that the coagulating kinetics The concentration of coked waste water afterwards is less than 200mg/L.
  5. 5. coked waste water deep treatment method according to claim 1 or 2, it is characterised in that the acid used in adjustment pH value It is the H that concentration is 10%2SO4
  6. 6. coked waste water deep treatment method according to claim 1 or 2, it is characterised in that the alkali used in adjustment pH value It is the KOH or NaOH that concentration is 10%.
CN201711139430.1A 2017-11-16 2017-11-16 A kind of coked waste water deep treatment method Pending CN107673522A (en)

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CN105036261A (en) * 2015-09-01 2015-11-11 北京石油化工学院 Internal-circulation type iron-carbon micro-electrolysis reactor
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Application publication date: 20180209