CN106957091A - A kind of processing method of organic industrial sewage - Google Patents
A kind of processing method of organic industrial sewage Download PDFInfo
- Publication number
- CN106957091A CN106957091A CN201710122644.1A CN201710122644A CN106957091A CN 106957091 A CN106957091 A CN 106957091A CN 201710122644 A CN201710122644 A CN 201710122644A CN 106957091 A CN106957091 A CN 106957091A
- Authority
- CN
- China
- Prior art keywords
- waste water
- processing method
- industrial sewage
- value
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- 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
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of processing method of organic industrial sewage, including pretreatment, electrolysis, catalytic oxidation stage, specifically include：Cast iron filing, activated carbon pretreatment is standby；The cast iron filing and activated carbon of pretreatment are added in the electrolysis tower for containing waste water；It is aided with compressed air 30 ~ 50min of aerated reaction, adds H2O2Continue to react 20 ~ 30min, stop reaction, waste water is put into intermediate pool addition sedimentation agent settles 8 ~ 24h；Catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 1 ~ 4 with acid regulation pH value, is added the catalyst, 0 ~ 0.8 ‰ activated carbon, 0.1 ~ 0.3 ‰ molecular sieve catalyst, 2.0 ~ 2.2 ‰ oxidant H of wastewater volume 0.7 ~ 0.9 ‰2O250 ~ 70min is reacted, it is 6 ~ 7 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation.The present invention has the advantages that, reduction sediment weight high to extra-high difficulty waste water COD and colourity degradation rate, reduction sludge dewatering workload and processing cost, improves treatment effect.
Description
Technical field
The invention belongs to chemical technology field, and in particular to one kind is high to extra-high difficulty waste water COD and colourity degradation rate, subtract
The processing method of few sediment weight, reduction sludge dewatering workload and processing cost, the organic industrial sewage of raising treatment effect.
Background technology
In recent years, with the fast development of China's industry, substantial amounts of organic industrial sewage is generated, this kind of waste water has as follows
Feature：One is complicated component, and strand is firmly, in divalence or trivalent strand, it is difficult to biochemical degradation；Two be CODcrHeight,
General CODcrFrom mg/L more than 10000 to hundreds of thousands mg/L；Three be that colourity is high, from thousands of times to tens of thousands of times；Four be this kind of waste water poison
Property it is big, it is serious to environmental hazard, can not handle up to standard with traditional handicraft；Five be that this kind of wastewater flow rate is small, from several ton days to tens
Ton day.Focus mostly in chemical industry, bio-pharmaceuticals, printing and dyeing, furniture, pickles, petrochemical industry row.Six be that existing catalysis oxidation adds
The problem of micro electrolysis tech effect difference practice is present is more.
Existing catalysis oxidation is using Fenton reagent oxidation；Waste water PH is adjusted to 4,3 ~ 4g/L of ferrous sulfate is added and gives up
Water, H2O2：2 ~ 3g/L waste water, stirring reaction 1h, adjust PH6 ~ 7, are settled with PAM.
Fe2++ H2O2→Fe3++.OH+ OH-
Fe3++H H2O2→Fe2++.OH2+H+
Fe2+With H2O2Rapid reaction generation .OH free radicals, and .OH free radicals are the extremely strong oxidants of oxidability in the aqueous solution,
By the organic molecule oxidation Decomposition [3.4] in waste water.
Iron-carbon micro-electrolysis [5.6]
Light electrolysis is, using golden corrosion principle, using Fe2+ as anode, using activated carbon as negative electrode, to form galvanic cell in acid condition
Reaction, also known as internal electrolysis, Filtration with Iron Filings, this technique is to be applied in 1970s in wastewater treatment,
Electrode reaction is as follows：
Anode（Fe）：Fe-2e→Fe2+ Eo-（Fe2+/Fe）=0.44V
Negative electrode（C）：2H++2e→2[H] →H2↑ (in acid solution) Eo(H+/H2)=OV
O when aerobic2+4H++4e→2H2O（In acid solution）EO-（O2/H2O）=1.23V
O2+2H2O+4e→4OH-(in neutral or alkaline solution) EO-(O2/H20)=0.41V
The reaction is to make use of galvanic interaction, redox reaction and Fe3+ coagulation for principle, makes having in waste water
Machine thing is degraded.Above-mentioned catalysis oxidation and light electrolysis generally existing problems with, influence using effect, and one is that extra-high difficulty is given up
Water COD degradation is poor, only 30-40%, and particularly high slat-containing wastewater is worse, and two be that sediment is more, and workload is increased to rear process,
Processing cost is increased, three be that light electrolysis iron and carbon are easily hardened, produce channeling and reduce treatment effect.Therefore, for upper
The characteristics of stating highly difficult organic industrial sewage, it may be difficult to which the organic industrial sewage of biochemical degradation is by pretreatment, and changing it can give birth to
The property changed coordinates anaerobism, aerobic process, realizes that discharged wastewater met the national standard is very important.
The content of the invention
It is an object of the invention to provide one kind to extra-high difficulty waste water COD and colourity degradation rate height, reduction sediment weight, drop
The processing method of low sludge dewatering workload and processing cost, the organic industrial sewage of raising treatment effect.
The object of the present invention is achieved like this, including pretreatment, electrolysis, catalytic oxidation stage, specifically includes：
A, pretreatment：By cast iron filing with 8 ~ 12% NaOH solution soak 8 ~ 12min oil removings clean, again with 2 ~ 4% HCl solution
Immersion 25 ~ 35min removal surface gizzardization films are cleaned standby；Activated carbon is standby with 1 ~ 3h of clear water immersion；
B, electrolysis：The composite electrolyte of wastewater volume 25 ~ 50%, the composite electrolyte are added in the electrolysis tower for contain waste water
For cast iron filing and the activated carbon by volume 0.5 ~ 1.5 of pretreatment：0.5 ~ 1.5 combines；It is aided with compressed air aeration anti-
30 ~ 50min is answered, 0.5 ~ 1.5 ‰ H are added2O2Continue to react 20 ~ 30min, stop reaction, waste water is put into intermediate pool adds sedimentation
Agent settles 8 ~ 24h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 1 ~ 4 with acid regulation pH value, is added
The catalyst of wastewater volume 0.7 ~ 0.9 ‰, 0 ~ 0.8 ‰ activated carbon, 0.1 ~ 0.3 ‰ 3A molecular sieves, 4A molecular sieves, 5A molecules
Sieve, 13X molecular sieve catalysts, 2.0 ~ 2.2 ‰ oxidant H2O250 ~ 70min is reacted, it is 6 ~ 7 to adjust pH value with aqueous slkali, is added
Sedimentation agent is settled.
The characteristics of present invention is directed to highly difficult organic industrial sewage, it may be difficult to which the organic industrial sewage of biochemical degradation passes through pre-
Processing, changes its biodegradability and coordinates anaerobism, aerobic process, realize discharged wastewater met the national standard.To extra-high difficulty waste water COD and colourity
Degraded has special efficacy up to 70 ~ 90%, and to all highly difficult organic wastewater degradeds, and BOD/COD, up to more than 0.3, is that biochemical treatment is created
Advantage.Sediment weight of the present invention reduces 1/3rd than prior art, reduces sludge dewatering workload and processing cost, and have
Effect solves Fe-C plate knot phenomenon, improves treatment effect.
Brief description of the drawings
Fig. 1 is present invention process flow chart；
Fig. 2 is oxidizer influence figure in the present invention.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is further illustrated, but the present invention is not subject in any way
Limitation, based on present invention teach that any conversion or replacement made, belong to protection scope of the present invention.
The present invention includes pretreatment, electrolysis, catalytic oxidation stage, specifically includes：
Pretreatment be by cast iron filing with 8 ~ 12% NaOH solution soak 8 ~ 12min oil removings clean, again with 2 ~ 4% HCl solution
Immersion 25 ~ 35min removal surface gizzardization films are cleaned standby；Activated carbon is standby with 1 ~ 3h of clear water immersion；
Electrolysis is the composite electrolyte that wastewater volume 25 ~ 50% is added in the electrolysis tower for contain waste water, and the composite electrolyte is
The cast iron filing of pretreatment and activated carbon by volume 0.5 ~ 1.5：0.5 ~ 1.5 combines；It is aided with compressed air aerated reaction
30 ~ 50min, adds 0.5 ~ 1.5 ‰ H2O2Continue to react 20 ~ 30min, stop reaction, waste water is put into intermediate pool adds sedimentation agent
Settle 8 ~ 24h；
Catalysis oxidation is that the waste water after electrolysis step is handled is squeezed into the reaction tank with stirring, is 1 ~ 4 with acid regulation pH value, plus
Enter the catalyst, 0 ~ 0.8 ‰ activated carbon, 0.1 ~ 0.3 ‰ molecular sieve catalyst of wastewater volume 0.7 ~ 0.9 ‰, 2.0 ~ 2.2 ‰
Oxidant H2O250 ~ 70min is reacted, it is 6 ~ 7 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation；The preferred NaOH of aqueous slkali.
Described electrolysis step medium cast iron iron filings are 0.8 ~ 1.2 with activated carbon volume ratio：0.8 ~ 1.2, preferably 1:1.
Determined in described electrolysis step during aerated reaction when pH value is 4 ~ 5 and add H2O2。
H is added in described electrolysis step2O2Reaction stops reaction when being 5.5 ~ 6.5 to pH value；It is preferred that pH value is to stop for 6
Only react.
Sedimentation agent is PAM in described electrolysis, catalytic oxidation stage.
It is 2 ~ 3 that acid for adjusting pH value is used in described catalytic oxidation stage.
Catalyst is binary catalyst in described catalytic oxidation stage.
Molecular sieve catalyst is 3A molecular sieves, 4A molecular sieves, 5A molecular sieves, 13X molecules in described catalytic oxidation stage
Any one in sieve；It is preferred that 4A molecular sieves.
Catalyst, activated carbon in described catalytic oxidation stage：Molecular sieve catalyst is 1：0.2.
The oxidant H added in described catalytic oxidation stage2O2For 2.1 ‰.
Operation principle and the course of work of the present invention：
1st, light electrolysis mechanism
1.1 redox reactions：Fe2+It is that following reaction can occur in acidic aqueous solution for active metal：
Fe+2H+=Fe2++H2↓
When there is oxidant in water, Fe2+Fe can be further oxidized to3+.From the electrode potential of iron it is recognised that in metal
The metal behind iron is come in activity command table to be possible to be replaced by iron out and be deposited on the surface of iron.Equally, other oxygen
The stronger ion of the property changed or compound can be also reduced into the less reduction-state of toxicity by iron or ferrous ion.
1.2 galvanic interactions：Cast iron is the alloy of iron and carbon, i.e., be made up of pure iron and Fe3C and some impurity.In cast iron
Cementite be minimum particle, be dispersed in iron.Cementite is lower than the corrosion tendency of iron, therefore, when cast iron is immersed in the water
Thousands of tiny micro cells are just constituted, anode are turned into pure iron, cementite and impurity are then negative electrode, occur electrode anti-
Should, this is microcosmic battery.In the presence of the activated carbon macroscopic cathode material in system, macroscopical battery can be constituted again, substantially
Electrode reaction is as follows：
Anode reaction：Fe-2e——Fe2+
EO(Fe2+/Fe)=-0.44v
Cathode reaction：2H++2e——H2
EO(H+/H2)=OV
When there is O2When：
O2+4H++4e——2H2O
E0(O2)=1.23V
O2+2H2O+4e——4OH-（Neutral or alkalescence）
E0(O2/OH)=0.40V
In the environment of slant acidity, cast iron electrode is in itself and produced nascent state H, Fe2+Deng can produce many in waste water
Component, the structure for occurring chromophoric group in redox reaction, energy damaged colored waste water, reaches decolouring purpose.Such as, to dinitro
Amido is completely converted into containing nitro material in chlorobenzene waste water, waste water, so that the colourity reduction of waste water, BOD5 days/CODcr
0.36mg/L is risen to from 0.03, biodegradability is greatly improved.
The coagulation of 1.3 iron：
In acid condition, when handling waste water with iron filings, Fe can be produced2+And Fe3+, it is good flocculant, solution pH value is adjusted
To alkalescence, and there is O2In the presence of can form Fe (OH)2And Fe（OH）3Flocculation sediment, reacts as follows：
Fe2++2OH——Fe(OH)2↓
4Fe2++8OH-+O2+2H2O——4Fe(OH)3↓
The Fe (OH) of generation3It is colloid flocculant, its adsorption capacity hydrolyzes obtained Fe (OH) higher than general medicament3Energy of adsorption
Power.So, the insoluble dyes that original suspension reacts the insoluble matter produced and colourity by micro cell in waste water can quilt
Its adsorption-condensation.
1.4Fenton oxidation
In light electrolysis, when PH rises to 4, Fenton oxidation requirements are just met for, this is feature part of the present invention, when
Fe2+With H2O2Quickly, and .OH free radicals are the extremely strong oxidations of oxidability in the aqueous solution to the speed of reaction generation .OH free radicals
Agent, can be by the organic molecule oxidation Decomposition in waste water.
2nd, catalysis oxidation mechanism
In acid condition, using activated carbon .4A molecular sieves as catalyst, H2O2For oxidant, catalyst promotes oxygen in 60min
Agent fast decoupled and produce .OH free radicals.The free radical has very strong oxidisability, can be by the organic molecule in waste water
Oxidation Decomposition is simultaneously mineralized into inorganic molecules.And molecular sieve has higher hole, is more beneficial for .OH free radicals and is attacked in hole
Organic molecule is hit, strengthens treatment effect.
The features of the present invention：
1st, the present invention has special efficacy to all highly difficult organic industrial sewages.Prior art is poor to some highly difficult waste water effects, or
It is invalid.
2nd, BOD/COD ratios can effectively be changed.More than 0.3 is brought up to from 0.03, is that biochemical treatment creates advantage.
3rd, sediment weight fewer than prior art 1/3, reduces Treatment of Sludge cost.
4th, equipment is simply easily operated.
Embodiment 1
Sample is taken from certain chemical enterprise chlorine nitre waste water, and measure COD value is 15000mg/L, and BOD values are 458mg/L, and pH value is
0.5, colourity is that 12000, SS is 2500mg/L.
A, pretreatment：By cast iron filing with 10% NaOH solution soak 10min oil removings clean, again with 3% HCl solution leaching
Bubble 30min removal surface gizzardization films are cleaned standby；Activated carbon is standby with clear water immersion 2h；
B, electrolysis：The composite electrolyte of wastewater volume 40% is added in the electrolysis tower for containing waste water, the composite electrolyte is pre-
The cast iron filing of processing and activated carbon by volume 1：1 combines；It is aided with compressed air aerated reaction 40min, surveying pH value is
4.5, add 1 ‰ H2O2Continue to react 25min, it is 6 to survey pH value, stops reaction, waste water is put into intermediate pool adds sedimentation agent sedimentation
24h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 2 with acid regulation pH value, is added useless
The catalyst of water volume 0.8 ‰, 0.1 ‰ molecular sieve catalyst, 2.1 ‰ oxidant H2O260min is reacted, is adjusted with aqueous slkali
PH value is 6, adds sedimentation agent sedimentation.Supernatant is taken to examine, assay is：COD value is 910mg/L, and BOD values are 325mg/L,
Colourity is 210 times, and it is that 94%, BOD clearances are 29% that calculating, which obtains COD clearances, and chroma removal rate is 98%, BOD/COD ratios
For 0.34.
Embodiment 2
Sample is taken from certain pharmacy corporation sulphadiazine waste water, and measure COD value is 12000mg/L, and BOD values are 340mg/L, pH value
For 7, colourity is that 2000, SS is 1500mg/L.
A, pretreatment：By cast iron filing with 8% NaOH solution soak 8min oil removings clean, again with 2% HCl solution immersion
25min removal surface gizzardization films are cleaned standby；Activated carbon is standby with clear water immersion 1h；
B, electrolysis：The composite electrolyte of wastewater volume 25% is added in the electrolysis tower for containing waste water, the composite electrolyte is pre-
The cast iron filing of processing and activated carbon by volume 0.5：1.5 combine；It is aided with compressed air aerated reaction 30min, surveys PH
It is worth for 4,0.5 ‰ H of addition2O2Continue to react 20min, it is 6.5 to survey pH value, stops reaction, waste water is put into intermediate pool adds sedimentation
Agent settles 8h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 1 with acid regulation pH value, is added useless
The catalyst of water volume 0.7 ‰, 0.2 ‰ activated carbon, 0.2 ‰ molecular sieve catalyst, 2.0 ‰ oxidant H2O2Reaction
50min, it is 7 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation.Supernatant is taken to examine, assay is：COD value is 880mg/
L, BOD value are 295mg/L, and colourity is 120 times, and it is that 93%, BOD clearances are 13.2%, color removal that calculating, which obtains COD clearances,
Rate is that 94%, BOD/COD ratios are 0.33.
Embodiment 3
Sample is taken from certain chemical enterprise nitrobenzene waste water, and measure COD value is 9500mg/L, and BOD values are 310mg/L, and pH value is
6, colourity is that 11000, SS is 2100mg/L.
A, pretreatment：By cast iron filing with 12% NaOH solution soak 12min oil removings clean, again with 4% HCl solution leaching
Bubble 35min removal surface gizzardization films are cleaned standby；Activated carbon is standby with clear water immersion 3h；
B, electrolysis：The composite electrolyte of wastewater volume 50% is added in the electrolysis tower for containing waste water, the composite electrolyte is pre-
The cast iron filing of processing and activated carbon by volume 0.8：1.2 combine；It is aided with compressed air aerated reaction 50min, surveys PH
It is worth for 5,1.5 ‰ H of addition2O2Continue to react 30min, it is 5.5 to survey pH value, stops reaction, waste water is put into intermediate pool adds sedimentation
Agent settles 20h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 3 with acid regulation pH value, is added useless
The catalyst of water volume 0.9 ‰, 0.5 ‰ activated carbon, 0.2 ‰ molecular sieve catalyst, 2.2 ‰ oxidant H2O2Reaction
70min, it is 7 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation.Supernatant is taken to examine, assay is：COD value is 710mg/
L, BOD value are 220mg/L, and colourity is 320 times, and it is that 92%, BOD clearances are 29%, chroma removal rate that calculating, which obtains COD clearances,
It is 0.28 for 97%, BOD/COD ratios.
Embodiment 4
Sample is taken from pesticide producing enterprise agricultural chemicals waste water, and measure COD value is 120000mg/L, and BOD values are 685mg/L, pH value
For 6.5, colourity is that 5000, SS is 2050mg/L.
A, pretreatment：By cast iron filing with 11% NaOH solution soak 12min oil removings clean, again with 4% HCl solution leaching
Bubble 30min removal surface gizzardization films are cleaned standby；Activated carbon is standby with clear water immersion 1h；
B, electrolysis：The composite electrolyte of wastewater volume 40% is added in the electrolysis tower for containing waste water, the composite electrolyte is pre-
The cast iron filing of processing and activated carbon by volume 1.2：0.8 combines；It is aided with compressed air aerated reaction 45min, surveys PH
It is worth for 5,1 ‰ H of addition2O2Continue to react 25min, it is 6.5 to survey pH value, stops reaction, waste water is put into intermediate pool adds sedimentation agent
Settle 10h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 4 with acid regulation pH value, is added useless
The catalyst of water volume 0.9 ‰, 0.8 ‰ activated carbon, 0.3 ‰ molecular sieve catalyst, 2.2 ‰ oxidant H2O2Reaction
60min, it is 6 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation.Supernatant is taken to examine, assay is：COD value is 2800mg/
L, BOD value are 580mg/L, and colourity is 340 times, and it is that 97.6%, BOD clearances are 15.3% that calculating, which obtains COD clearances, and colourity is gone
Except rate is that 93%, BOD/COD ratios are 0.2.
Embodiment 5
Sample is taken from certain furniture enterprise waste water, and measure COD value is 11000mg/L, and BOD values are 450mg/L, and pH value is 6.2, color
It is 3000mg/L to spend for 200, SS.
A, pretreatment：By cast iron filing with 8% NaOH solution soak 12min oil removings clean, again with 4% HCl solution leaching
Bubble 35min removal surface gizzardization films are cleaned standby；Activated carbon is standby with clear water immersion 3h；
B, electrolysis：The composite electrolyte of wastewater volume 50% is added in the electrolysis tower for containing waste water, the composite electrolyte is pre-
The cast iron filing of processing and activated carbon by volume 1.5：0.5 combines；It is aided with compressed air aerated reaction 50min, surveys PH
It is worth for 4,1.5 ‰ H of addition2O2Continue to react 20min, it is 6.5 to survey pH value, stops reaction, waste water is put into intermediate pool adds sedimentation
Agent settles 18h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 4 with acid regulation pH value, is added useless
The catalyst of water volume 0.8 ‰, 0.5 ‰ activated carbon, 0.2 ‰ molecular sieve catalyst, 2.2 ‰ oxidant H2O2Reaction
60min, it is 7 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation.Supernatant is taken to examine, assay is：COD value is 820mg/
L, BOD value are 290mg/L, and colourity is 32 times, and it is that 93%, BOD clearances are 36%, chroma removal rate that calculating, which obtains COD clearances,
It is 0.35 for 84%, BOD/COD ratios.
Test example 1
Consumption and component and oxidizer the impact effect research of catalyst：
1st, the influence of catalyst amount
Under oxidant and pH value controlled condition, the Catalyst test results of different amounts show：When catalyst/oxidant=0.5
When COD and colourity clearance it is also very high, but reaction speed is very slow（Needing 9-10n could complete）；When catalyst/oxidant content
Obvious to reaction speed when 0.8 to accelerate, reaction is more fierce, it is only necessary to which 40-60min can be completed.COD and colourity clearance
It is very high（≥90%）, substantially increase pretreatment efficiency.
2nd, the influence of catalytic component
Under the conditions of catalyst/oxidant content 0.8, pH value 2-3, adjustment catalytic component and ratio are adjusted by binary composition A, B
Whole is component A, and component A, when being 1, quickly, but the removal of COD colourities is relatively low for reaction（65%）；When catalyst is adjusted to bis- groups of AB
Point, and A/B components are 1：Significant reaction is fierce earlier above when 0.2, and COD and chroma removal rate are greatly improved（90%）.
3rd, the influence of oxidizer
When catalyst/oxidant content 0.8 and catalyst are AB：1：Accompanying drawing 2 is shown in oxidizer influence when 0.2.
From accompanying drawing 2, it is consequently increased with increase then COD and the clearance of colourity of oxidizer, but work as oxygen
The removal of COD and colourity is begun to decline to 85% and 80% when agent consumption reaches 2.4, COD and colourity when oxidizer is up to 3
Clearance be down to 75% and 65%；It is optimal when oxidizer is up to 2.1, COD and chroma removal rate are up to 90% and 85%.
4th, catalysis oxidation mechanism
In catalyst（Binary A/B=1：0.2）Under the conditions of/oxidant content 0.8, oxidant 2.1, PH2-3, oxidant decomposition rate
Start very fast（5min decomposes 40%）, acutely and heat release, decomposition rate is slack-off after 20min, and has gas overflowing in liquid level for reaction.
40-60min decomposes complete substantially.In acid condition, catalyst promotes oxidant fast decoupled and produces .OH free radicals.Should
Free radical has very strong oxidisability, can interrupt the chromophoric group in chlorine nitre waste water and larger molecular organicses chain and rapid
It is both such to be oxidized to liquid level after small-molecule substance and carbon dioxide and water, 20min to overflow gas.The reaction meets first order kinetics
Principle is learned, if better when being equipped with ultraviolet lighting.
Claims (10)
1. a kind of processing method of organic industrial sewage, it is characterised in that including pretreatment, electrolysis, catalytic oxidation stage, specifically
Including：
A, pretreatment：By cast iron filing with 8 ~ 12% NaOH solution soak 8 ~ 12min oil removings clean, again with 2 ~ 4% HCl solution
Immersion 25 ~ 35min removal surface gizzardization films are cleaned standby；Activated carbon is standby with 1 ~ 3h of clear water immersion；
B, electrolysis：The composite electrolyte of wastewater volume 25 ~ 50%, the composite electrolyte are added in the electrolysis tower for contain waste water
For cast iron filing and the activated carbon by volume 0.5 ~ 1.5 of pretreatment：0.5 ~ 1.5 combines；It is aided with compressed air aeration anti-
30 ~ 50min is answered, 0.5 ~ 1.5 ‰ H are added2O2Continue to react 20 ~ 30min, stop reaction, waste water is put into intermediate pool adds sedimentation
Agent settles 8 ~ 24h；
C, catalysis oxidation：Waste water after step B is handled is squeezed into the reaction tank with stirring, is 1 ~ 4 with acid regulation pH value, is added
The catalyst of wastewater volume 0.7 ~ 0.9 ‰, 0 ~ 0.8 ‰ activated carbon, 0.1 ~ 0.3 ‰ molecular sieve catalyst, 2.0 ~ 2.2 ‰
Oxidant H2O250 ~ 70min is reacted, it is 6 ~ 7 to adjust pH value with aqueous slkali, adds sedimentation agent sedimentation.
2. the processing method of organic industrial sewage according to claim 1, it is characterised in that described step B medium cast iron iron
Bits are 0.8 ~ 1.2 with activated carbon volume ratio：0.8~1.2.
3. the processing method of organic industrial sewage according to claim 1, it is characterised in that be aerated in described step B anti-
Determined during answering when pH value is 4 ~ 5 and add H2O2。
4. the processing method of organic industrial sewage according to claim 1, it is characterised in that added in described step B
H2O2Reaction stops reaction when being 5.5 ~ 6.5 to pH value.
5. the processing method of organic industrial sewage according to claim 1, it is characterised in that settled in described B, step C
Agent is PAM.
6. the processing method of organic industrial sewage according to claim 1, it is characterised in that with acid tune in described step C
It is 2 ~ 3 to save pH value.
7. the processing method of organic industrial sewage according to claim 1, it is characterised in that catalyst in described step C
For binary catalyst.
8. the processing method of organic industrial sewage according to claim 1, it is characterised in that molecular sieve in described step C
Catalyst is any one in 3A molecular sieves, 4A molecular sieves, 5A molecular sieves, 13X molecular sieves.
9. the processing method of the organic industrial sewage according to claim 1 or 8 or 9, it is characterised in that in described step C
Catalyst, activated carbon：Molecular sieve catalyst is 1：0.2.
10. the processing method of organic industrial sewage according to claim 1, it is characterised in that added in described step C
Oxidant H2O2For 2.1 ‰.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122644.1A CN106957091A (en) | 2017-03-03 | 2017-03-03 | A kind of processing method of organic industrial sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122644.1A CN106957091A (en) | 2017-03-03 | 2017-03-03 | A kind of processing method of organic industrial sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106957091A true CN106957091A (en) | 2017-07-18 |
Family
ID=59470646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710122644.1A Pending CN106957091A (en) | 2017-03-03 | 2017-03-03 | A kind of processing method of organic industrial sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106957091A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218146A (en) * | 2018-03-19 | 2018-06-29 | 苏州依斯倍环保装备科技有限公司 | A kind for the treatment of process and processing system of rubber chemicals class high concentrated organic wastewater |
| CN108946910A (en) * | 2018-07-31 | 2018-12-07 | 北京翔鲲水务建设有限公司 | A kind of sewage water treatment method |
| CN109721192A (en) * | 2019-03-05 | 2019-05-07 | 浙江省林业科学研究院 | A kind of processing method of bamboo heat_treated wood waste water |
| CN112010486A (en) * | 2020-09-07 | 2020-12-01 | 巫协森 | Method and system for treating and recycling cotton dyeing waste dye liquor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910770A (en) * | 2012-10-31 | 2013-02-06 | 四川志得环保科技有限公司 | Organic industrial wastewater treatment process |
| CN102951759A (en) * | 2012-11-13 | 2013-03-06 | 云南春城实业集团有限公司 | Method for treating highly-difficult-to-treat industrial wastewater through catalytic oxidation and micro-electrolysis |
-
2017
- 2017-03-03 CN CN201710122644.1A patent/CN106957091A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910770A (en) * | 2012-10-31 | 2013-02-06 | 四川志得环保科技有限公司 | Organic industrial wastewater treatment process |
| CN102951759A (en) * | 2012-11-13 | 2013-03-06 | 云南春城实业集团有限公司 | Method for treating highly-difficult-to-treat industrial wastewater through catalytic oxidation and micro-electrolysis |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108218146A (en) * | 2018-03-19 | 2018-06-29 | 苏州依斯倍环保装备科技有限公司 | A kind for the treatment of process and processing system of rubber chemicals class high concentrated organic wastewater |
| CN108946910A (en) * | 2018-07-31 | 2018-12-07 | 北京翔鲲水务建设有限公司 | A kind of sewage water treatment method |
| CN109721192A (en) * | 2019-03-05 | 2019-05-07 | 浙江省林业科学研究院 | A kind of processing method of bamboo heat_treated wood waste water |
| CN112010486A (en) * | 2020-09-07 | 2020-12-01 | 巫协森 | Method and system for treating and recycling cotton dyeing waste dye liquor |
| CN112010486B (en) * | 2020-09-07 | 2023-01-20 | 巫协森 | Method and system for treating and recycling cotton dyeing waste dye liquor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101734817B (en) | Method for treating organic chemical waste water | |
| CN106957091A (en) | A kind of processing method of organic industrial sewage | |
| JP7177220B2 (en) | At the same time, a method for treating wastewater containing high concentrations of ammonium nitrogen and organic constituents | |
| CN106186456B (en) | Electrochemical comprehensive treatment technology for high-concentration organic wastewater hard to degrade | |
| CN104743652B (en) | A kind of method for processing organic wastewater with difficult degradation thereby and its multicomponent catalyst for being adopted | |
| CN108793540A (en) | A kind of method of organic wastewater with difficult degradation thereby advanced treating | |
| CN106554126B (en) | Deep standard-reaching treatment method and system for reverse osmosis concentrated water | |
| CN101723485A (en) | Method for processing reverse osmosis concentrated water | |
| CN108892309A (en) | A kind of high-efficient treatment method being suitble to coking wastewater difficult to degrade | |
| US20230242430A1 (en) | Integrated device and method for treating toxic and refractory wastewater | |
| CN109205954A (en) | Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art | |
| CN102951759A (en) | Method for treating highly-difficult-to-treat industrial wastewater through catalytic oxidation and micro-electrolysis | |
| CN100591632C (en) | Advanced treatment method and device for dyeing waste water by ozone iron zinc catalysis | |
| CN102897960A (en) | Industrial sewage treatment device | |
| CN113860638A (en) | Chemical-electrochemical-biological three-section combined wastewater treatment device and application | |
| CN111606519A (en) | Advanced treatment method for electroplating wastewater | |
| CN105330088B (en) | A kind of processing method of ethylene waste lye | |
| CN1275881C (en) | Method for photo-oxidative flocculating treatment of organic pollutant waster water | |
| CN109721138A (en) | A kind of method of electric field-enhanced over cure acid group free radical processing dyeing waste water | |
| Simon et al. | A sequential aerated electrocoagulation and peroxicoagulation process for the treatment of municipal stabilized landfill leachate by iron and graphite electrodes | |
| CN1636893A (en) | Combined effluent treating process of photooxidizing Fenton's reaction, flocculation and microbial degradation | |
| CN106145483B (en) | Multiple oxidation treatment method and device for wastewater | |
| CN103288280B (en) | Method for processing circuit board and electroplating waste water through microwave, micro-electrolysis and oxidation technologies | |
| CN110606649B (en) | Sludge conditioning and dewatering method and device | |
| CN102329050B (en) | Process and device for efficiently treating wheat straw pulp intermediate wastewater by alkaline method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170718 |