CN106746131A - A kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process and system - Google Patents
A kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process and system Download PDFInfo
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- CN106746131A CN106746131A CN201710050719.XA CN201710050719A CN106746131A CN 106746131 A CN106746131 A CN 106746131A CN 201710050719 A CN201710050719 A CN 201710050719A CN 106746131 A CN106746131 A CN 106746131A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 184
- 239000002351 wastewater Substances 0.000 title claims abstract description 99
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 92
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 56
- 230000003647 oxidation Effects 0.000 title claims abstract description 53
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 30
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 31
- 230000015271 coagulation Effects 0.000 claims abstract description 28
- 238000005345 coagulation Methods 0.000 claims abstract description 28
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 25
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 230000001590 oxidative effect Effects 0.000 claims abstract description 12
- 239000000701 coagulant Substances 0.000 claims abstract description 9
- 238000005189 flocculation Methods 0.000 claims abstract description 9
- 230000016615 flocculation Effects 0.000 claims abstract description 9
- 239000007800 oxidant agent Substances 0.000 claims abstract description 9
- 239000004902 Softening Agent Substances 0.000 claims abstract description 8
- 239000006228 supernatant Substances 0.000 claims abstract description 7
- 239000000047 product Substances 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 238000006555 catalytic reaction Methods 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 17
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 238000001556 precipitation Methods 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 229910052684 Cerium Inorganic materials 0.000 claims description 7
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000005416 organic matter Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 5
- 238000006385 ozonation reaction Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 239000007832 Na2SO4 Substances 0.000 claims description 3
- 238000003421 catalytic decomposition reaction Methods 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims 1
- 238000005336 cracking Methods 0.000 claims 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 1
- 150000003254 radicals Chemical class 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 239000012528 membrane Substances 0.000 description 11
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- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000002894 chemical waste Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
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- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012958 reprocessing Methods 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- VGBWDOLBWVJTRZ-UHFFFAOYSA-K cerium(3+);triacetate Chemical compound [Ce+3].CC([O-])=O.CC([O-])=O.CC([O-])=O VGBWDOLBWVJTRZ-UHFFFAOYSA-K 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- -1 hydroxyl radical free radical Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
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- 125000000129 anionic group Chemical group 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
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- 230000006378 damage Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
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- 238000000502 dialysis Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000003295 industrial effluent Substances 0.000 description 1
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- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000011272 standard treatment Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/203—Iron or iron compound
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/206—Manganese or manganese compounds
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- 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)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention proposes a kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process and system, the described method comprises the following steps：Step 1, makes organic wastewater carry out first-stage reverse osmosis treatment, obtains primary concentration waste water；Step 2, makes primary concentration waste water that oxidation reaction is carried out in the presence of oxidant, obtains oxidized waste water；Step 3：Oxidized waste water is softened in the presence of softening agent, obtain and soften waste water；Step 4：Make softening waste water that coagulation is carried out in the presence of coagulant and flocculation aid；Step 5：The product of step 4 is precipitated, supernatant waste water is obtained；Step 6：Supernatant waste water is carried out into neutralization reaction；Step 7：Multi-medium filtering will be carried out through the waste water in step 6 with after, obtain single filter waste water；Step 8：Single filter waste water is carried out into ultrafiltration, cascade filtration waste water is obtained；Step 9：Cascade filtration waste water is carried out into two-pass reverse osmosis treatment, secondary concentration water and recycle-water is obtained.
Description
Technical field
Processing technology field is utilized the invention belongs to Sewage treatment, is related to a kind of organic wastewater reverse osmosis concentrated water to aoxidize and de-
Salt method and system.
Background technology
China's water resources ownership per capita is about 2000 cubic metres, according to international standard, belongs to moderate water shortage level.Separately
Outward, due to the timely path difference opposite sex in the area of China's distribution of water resources, there are about 2/3 in national 600 cities and belong to " serious water shortage "
" water shortage " city.Wherein, 16 provinces and regions are in moderate water shortage level, and 6 provinces and regions are in extreme dehydration level.However, receiving people
Environmental consciousness and water processing establishment restriction, the waste water of a large amount of unprocessed or below standard treatment enters rivers and lakes, to water
Environment structure grave danger.Shortage of water resources has turned into the economic development of restriction China, has influenceed social harmony stabilization with water pollution
Key factor.Reclaimed water reuse is one of important channel of solution China shortage of water resources, as recycled water water and water quality will
The raising asked, application of " ultrafiltration+counter-infiltration " bi-membrane method in waste water recycling treatment is also increasingly popularized." ultrafiltration+counter-infiltration "
Double membrane process can obtain preferable effluent quality, but the system there is also some problems, constrain its engineer applied.It is " super
The main problem that the double membrane process of filter+counter-infiltration " are present is that the producing water ratio of reverse osmosis membrane technology is general less than 75%, there are about 30%
Concentrated water produce.RO concentrated waters as waste water concentrate, it is high etc. with saliferous high, high rigidity, persistent organic pollutants concentration
Feature, has larger harmfulness to human health and ecological environment.Solving concentrated water reprocessing and emission problem turns into RO techniques
Must be faced and problem in the urgent need to address for waste water advanced treatment recovery.
A kind of processing methods of reverse osmosis concentrated water of Chinese invention patent CN201610719214.3 are by reverse osmosis concentrated water
Then middle addition precipitating reagent and oxidant are taken off by two-pass reverse osmosis through being filtrated to get coagulation water to coagulation water
Salt treatment, two-pass reverse osmosis produce water and carry out reuse, discharge after two-pass reverse osmosis concentrated water is oxidation-treated.The reverse osmosis concentrated water process
Method can obtain certain NF concentrated water reuse rate, but its oxidant for adding increases again to new ion is introduced in reverse osmosis concentrated water
The operating load of two-pass reverse osmosis；The oxidizing effect that it is added is limited；Discharge after two-pass reverse osmosis concentrated water is oxidized,
TDS in waste water is not reduced, has bigger harmfulness to ecological environment.
A kind of electric dialyzators of Chinese invention patent CN201310717316.8 and near-zero release industrial effluent reusing technique will
The PROCESS FOR TREATMENT that reverse osmosis concentrated water is further combined using ultrafiltration and counter-infiltration, recovery section water, the concentrated water of generation is using electricity
Dialysis carries out depth concentration, and the fresh water reuse of concentration process generation, concentrated water are evaporated crystallization.But the reverse osmosis concentrated water process side
Method is pre- to reverse osmosis concentrated water using electrochemistry flocculation, electrocatalytic oxidation reduction, electric floating, High-rate sedimentation and multi-medium filtering technique
Concentrated water desalting processing is carried out into ultrafiltration and reverse osmosis unit after treatment, the pretreating process is without reverse osmosis concentrated water sofening treatment
Technique and in reverse osmosis concentrated water organic matter removal effect it is limited so that ultrafiltration, counter-infiltration, electrodialytic membranes are easily blocked, reduce
The service life of film and be not suitable for the reprocessing of content of organics reverse osmosis concentrated water high.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, it is an object of the present invention to propose a kind of organic wastewater reverse osmosis concentrated water oxidation and desalination process.
Another object of the present invention is to propose a kind of organic wastewater reverse osmosis concentrated water oxidation and desalination system.
Organic wastewater reverse osmosis concentrated water oxidation according to embodiments of the present invention and desalination process, comprise the following steps：
Step 1, makes organic wastewater carry out first-stage reverse osmosis treatment, obtains primary concentration waste water；
Step 2, makes primary concentration waste water that oxidation reaction is carried out in the presence of oxidant, obtains oxidized waste water；
Step 3：Oxidized waste water is softened in the presence of softening agent, obtain and soften waste water；
Step 4：Make softening waste water that coagulation is carried out in the presence of coagulant and flocculation aid；
Step 5：The product of step 4 is precipitated, supernatant waste water is obtained；
Step 6：Supernatant waste water is carried out into neutralization reaction；
Step 7：Multi-medium filtering will be carried out through the waste water in step 6 with after, obtain single filter waste water；
Step 8：Single filter waste water is carried out into ultrafiltration, cascade filtration waste water is obtained；
Step 9：Cascade filtration waste water is carried out into two-pass reverse osmosis treatment, secondary concentration water and recycle-water is obtained.
Advantageously, described organic wastewater reverse osmosis concentrated water oxidation and desalination process, it is characterised in that also including to step
The step of tail gas produced by 2 is destroyed.
Advantageously, described organic wastewater reverse osmosis concentrated water oxidation and desalination process, it is characterised in that also including to step
The step of 9 secondary concentration water for being obtained are evaporated to obtain distilled water.
Advantageously, the oxidant employed in the step 2 is ozone, and ozone is produced by force under catalysis oxidation filler effect
Organic matter in the hydroxyl radical free radical degradation of organic waste water reverse osmosis concentrated water of oxidisability, catalysis oxidation filler for be loaded with iron, copper,
Manganese, nickel, the activated carbon catalysis oxide filler of cerium, the activated carbon catalysis oxide filler by immersion, are calcined with activated carbon as carrier
Iron, copper, manganese, nickel, cerium is set to be carried on activated carbon.
Advantageously, the softening agent employed in the step 3 is NaOH, Ca (OH)2、Na2CO3、Na2SO4In any one
Or it is several, the pH for softening reaction is 9-12, and preferred pH is 10-11.
Advantageously, the coagulant employed in the step 4 is PAC and/or PFS, and helping employed in the step 4 is solidifying
Agent is PAM.
Advantageously, neutralization reaction, neutralization reaction are carried out using any one in acetic acid, hydrochloric acid and sulfuric acid in the step 6
PH afterwards is 6-8, and preferred pH is 7.
Advantageously, multi-medium filtering is carried out using except iron, demanganization filtrate in the step 7.
Advantageously, using the ozone in filling activated carbon catalysis oxide filler catalytic decomposition ozonisation tail gas.
A kind of organic wastewater reverse osmosis concentrated water oxidation according to embodiments of the present invention and desalination system, including：
First-stage reverse osmosis film, the first-stage reverse osmosis film has one-level water inlet, primary concentration water delivery port and one-level net
Water delivery port；
There is oxidation reactor, the oxidation reactor oxidation water inlet, oxidation delivery port, ozone inlet and tail gas to go out
Mouthful, the oxidation water inlet is connected with the primary concentration water delivery port；
Vent ozone destructor, the vent ozone destructor is connected with the offgas outlet；
Soften reactor, the softening reactor have soften water inlet and soften delivery port, the softening water inlet with
The oxidation delivery port is connected；
Coagulation reactor, the coagulation reactor has coagulation water inlet and a coagulation delivery port, the coagulation water inlet with
The softening delivery port is connected；
Efficient settler, the efficient settler have precipitation water inlet and precipitation delivery port, the precipitation water inlet with
The coagulation delivery port is connected；
Neutralization reactor, the neutralization reactor have neutralize water inlet and neutralize delivery port, the neutralization water inlet with
The precipitation delivery port is connected；
More medium filter, the more medium filter has filtered water inlet mouthful and filtering delivery port, the filtered water inlet
Mouth is connected with the neutralization delivery port；
Ultrafiltration apparatus, the ultrafiltration apparatus have ultrafiltration water inlet and a ultra-filtration water mouthful, the ultrafiltration water inlet with it is described
Filtering delivery port is connected；
Two-pass reverse osmosis film, the two-pass reverse osmosis film has two grades of water inlets, secondary concentration water delivery port and two grades net
Water delivery port, two grades of water inlets are connected with the ultra-filtration water mouthful；
Vaporising device, the vaporising device is connected with the secondary concentration water delivery port.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Accompanying drawing 1 is showing for a kind of organic wastewater reverse osmosis concentrated water oxidation according to an embodiment of the invention and desalination system
It is intended to.
Specific embodiment
As shown in figure 1, a kind of organic wastewater reverse osmosis concentrated water oxidation according to embodiments of the present invention and desalination system, bag
Include：First-stage reverse osmosis film 101, oxidation reactor 102, vent ozone destructor 103 softens reactor 104, and coagulation reactor 105 is high
Effect settling vessel 106, neutralization reactor 107, more medium filter 108, ultrafiltration apparatus 109, two-pass reverse osmosis film 110, evaporation dress
Put 111.
Specifically, first-stage reverse osmosis film 101 has one-level water inlet 1011, primary concentration water delivery port 1012 and one-level
Water purification delivery port 1013.
There is oxidation reactor 102 oxidation water inlet 1021, oxidation delivery port 1022, ozone inlet 1024 and tail gas to go out
Mouth 1023, oxidation water inlet 1021 is connected with primary concentration water delivery port 1012.
Vent ozone destructor 103 is connected with offgas outlet 1023.
Softening reactor 104 has softening water inlet 1041 and softens delivery port 1042, softens water inlet 1041 and aoxidizes
Delivery port 1022 is connected.
Coagulation reactor 105 has coagulation water inlet 1051 and coagulation delivery port 1052, coagulation water inlet 1051 and softening
Delivery port 1042 is connected.
Efficient settler 106 has precipitation water inlet 1061 and precipitation delivery port 1062, precipitates water inlet 1061 and coagulation
Delivery port 1052 is connected.
Neutralization reactor 107 has neutralization water inlet 1071 and neutralizes delivery port 1072, neutralizes water inlet 1071 and precipitates
Delivery port 1062 is connected.
More medium filter 108 has filtered water inlet mouthful 1082 and filtering delivery port 1082, and filtered water inlet mouthful 1081 is with
It is connected with delivery port 1072.
Ultrafiltration apparatus 109 have ultrafiltration water inlet 1091 and a ultra-filtration water mouthfuls 1092, ultrafiltration water inlet 1091 with filter out
The mouth of a river 1082 is connected.
Two-pass reverse osmosis film 110 has two grades of water inlets 1101, secondary concentration water delivery port 1102 and two grades of water purification water outlets
Mouth 1103, two grades of water inlets 1101 are connected with ultra-filtration water mouthful 1092.
Vaporising device 111 is connected with secondary concentration water delivery port 1102.
Organic wastewater reverse osmosis concentrated water oxidation according to embodiments of the present invention and desalination process, response path are substantially as follows：
Concentrated water after organic wastewater is processed through first-stage reverse osmosis enters oxidation reactor, declines in oxidant strong oxidation
Organic matter in solution organic wastewater reverse osmosis concentrated water, the ozonisation tail gas that oxidation reactor is produced decomposes it into vent ozone destructor
In ozone after discharge.Oxidation reactor water outlet enters softening reactor, and organic wastewater counter-infiltration is removed by adding softening agent
Hardness in concentrated water, softens reactor water outlet and enters coagulation reactor, causes that flco becomes big under coagulant, flocculation aid effect,
Coagulation reactor water outlet realizes separation of solid and liquid into efficient settler.Efficient settler supernatant enters neutralization reactor, in acid
In the presence of adjust wastewater pH be 7 or so, neutralization reactor water outlet enter more medium filter removal waste water in suspension,
Iron, manganese etc., more medium filter water outlet enter ultrafiltration, second level reverse osmosis apparatus, realize the reverse osmosis concentrated water desalination of organic wastewater again
Treatment, two-pass reverse osmosis produce water and carry out reuse, and two-pass reverse osmosis concentrated water enters vaporising device, evaporative crystallization, realizes organic wastewater
Reverse osmosis concentrated water zero discharge.
Filling catalysis oxidation filler in the oxidation reactor, oxidant used by the oxidation reactor is ozone, ozone
Organic matter in the hydroxyl radical free radical degradation of organic waste water reverse osmosis concentrated water for producing strong oxidizing property under catalysis oxidation filler effect.
Waste water is inversely contacted with ozone in oxidation reactor, and gas-liquid-solid three-phase is fully contacted, and Ozone Gas Mass Transfer Efficiency is high.
The catalysis oxidation filler of filling is the activated carbon catalysis for being loaded with iron, copper, manganese, nickel, cerium in the oxidation reactor
Oxide filler, the activated carbon catalysis oxide filler loads iron, copper, manganese, nickel, cerium with activated carbon as carrier by immersion, calcining
On activated carbon.
Activated carbon catalysis oxide filler manufacturing process：Configure iron, copper, manganese, nickel, cerium acetate or the nitrate of certain concentration
Solution, adds the activated carbon of extra fine quality, and after activated carbon dipping certain hour, taking-up is cleaned with distilled water.At a certain temperature
Calcining certain hour, obtains required carried-type active Pd/carbon catalyst.
Described iron, copper, manganese, nickel, cerium acetate or nitrate solution concentration are 0.05mol/L-0.4mol/L, preferably
0.2-0.3mol/L；The activated carbon dip time is 1-4h, preferably 2-3h；The calcining heat is 400-700 DEG C, preferably
500-600℃；The calcination time is 3-6h, preferably 4h.The iron, copper, manganese, nickel, cerium and quality of activated carbon are than respectively 1-
3、1-3、2-4、2-5、0.05-1.5。
Ozone in described vent ozone destructor in filling activated carbon catalysis oxide filler catalytic decomposition ozonisation tail gas.
The softening agent that described softening reactor is used is NaOH, Ca (OH)2、Na2CO3、Na2SO4In one or more.
Described softening reactor reaction pH is 9-12, preferably 10-11.
The coagulant that described coagulation reactor is used is inorganic coagulant, preferably PAC, PFS, and the flocculation aid for using is have
Machine flocculation aid, preferred anionic PAM.
The acid that described neutralization reactor is used can be acetic acid, hydrochloric acid, sulfuric acid, neutralization reactor regulation organic wastewater reverse osmosis
Saturating concentrated water pH is 6-8, preferably 7.
Filling removes iron, demanganization filtrate in described more medium filter, for removing organic wastewater reverse osmosis concentrated water in
Iron, manganese.
The ultrafiltration membrane material that described ultrafiltration apparatus are used is PTFE, and milipore filter sheathing material is ABS, and fixed sealing material is ring
Oxygen tree fat.
The reverse osmosis membrane that described reverse osmosis unit is used is desalinization level reverse osmosis membrane.
Described vaporising device can be multiple-effect evaporation, mechanical steam recompression device.
Beneficial effect
(1) oxidation of this organic wastewater reverse osmosis concentrated water and desalination process are for different groups in organic wastewater reverse osmosis concentrated water
Set up separately and put rational, targetedly handling process so that the method high treating effect, it is wide using scope.
(2) oxidation of this organic wastewater reverse osmosis concentrated water and desalination process have using the removal of catalytic ozonation technique is therein
Machine thing, ion, suspension are not introduced, and two-pass reverse osmosis operating load is not increased, and, it is smelly. to the organic matter degradation in waste water thoroughly
Oxidation air tail gas sets special vent ozone destructor destruction ozone, does not cause secondary pollution.
(3) this organic wastewater reverse osmosis concentrated water oxidation and desalination process to the organic matter in organic wastewater reverse osmosis concentrated water,
Hardness, iron, manganese etc. are removed respectively, reduce the risk of ultrafiltration and second level reverse osmosis apparatus fouling membrane, greatly prolong making for film
Use the life-span.
(4) oxidation of this organic wastewater reverse osmosis concentrated water and desalination process can realize that effect is excellent to organic wastewater reverse osmosis concentrated water
The different target for reclaiming, realizing organic wastewater near-zero release again.
(5) this organic wastewater reverse osmosis concentrated water oxidation and desalination process solve bi-membrane method treatment organic wastewater engineering lack
Fall into, can greatly promote the application in the field that bi-membrane method is utilized in Sewage treatment.
(6) this organic wastewater reverse osmosis concentrated water oxidation and desalination process to organic wastewater reverse osmosis concentrated water through secondary counter-infiltration
Enter vaporising device evaporative crystallization after concentration, processing cost is reduced greatly improving while organic wastewater is recycled.
Embodiment
Certain coking chemical waste water first-stage reverse osmosis concentrated water is aoxidized and desalination reprocessing using present system.The coking chemical waste water
First-stage reverse osmosis concentrated water electrical conductivity be 11ms/cm, COD be 150mg/L, total hardness be 360mg/L, total iron be 2mg/L, the coking
COD clearances are 90% after the oxidized reactor for treatment of waste water first-stage reverse osmosis concentrated water, wherein COD and ozone dosage material
The ratio between amount is 1:3；Total hardness after the softened reactor of oxidized waste water, coagulation reactor, efficient settler, neutralization reactor treatment
Clearance is 95%, wherein the softening agent that softening reactor is added is Na (OH), Na2CO3, it is 11 to soften reaction controlling reaction pH,
Coagulant, flocculation aid respectively PAC, anion PAM that coagulation reactor is added, the acid that neutralization reactor is added are hydrochloric acid, control
System reaction pH is 7；Neutralization reactor waste water total iron clearance after more medium filter treatment is 96%, single filter waste water warp
The coking chemical waste water first-stage reverse osmosis NF concentrated water reuse rate is 60%, produces two grades of 40% after ultrafiltration, second level reverse osmosis apparatus treatment
Reverse osmosis concentrated water；Two-pass reverse osmosis concentrated water enters the evaporation of MVR devices, crystallization, and MVR devices produce Water circulation, concentrate as danger
Waste treatment.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art is within the scope of the invention to above-mentioned implementation
Example is changed, changes, replacing and modification, each falls within protection scope of the present invention.
Claims (10)
1. a kind of organic wastewater reverse osmosis concentrated water is aoxidized and desalination process, it is characterised in that comprised the following steps：
Step 1, makes organic wastewater carry out first-stage reverse osmosis treatment, obtains primary concentration waste water；
Step 2, makes primary concentration waste water that oxidation reaction is carried out in the presence of oxidant, obtains oxidized waste water；
Step 3：Oxidized waste water is softened in the presence of softening agent, obtain and soften waste water；
Step 4：Make softening waste water that coagulation is carried out in the presence of coagulant and flocculation aid；
Step 5：The product of step 4 is precipitated, supernatant waste water is obtained；
Step 6：Supernatant waste water is carried out into neutralization reaction；
Step 7：Multi-medium filtering will be carried out through the waste water in step 6 with after, obtain single filter waste water；
Step 8：Single filter waste water is carried out into ultrafiltration, cascade filtration waste water is obtained；
Step 9：Cascade filtration waste water is carried out into two-pass reverse osmosis treatment, secondary concentration water and recycle-water is obtained.
2. organic wastewater reverse osmosis concentrated water according to claim 1 is aoxidized and desalination process, it is characterised in that also including right
The step of tail gas produced by step 2 is destroyed.
3. organic wastewater reverse osmosis concentrated water according to claim 1 is aoxidized and desalination process, it is characterised in that also including right
The step of secondary concentration water that step 9 is obtained is evaporated to obtain distilled water.
4. the organic wastewater reverse osmosis concentrated water according to any one of claim 1-3 is aoxidized and desalination process, and its feature exists
In the oxidant employed in the step 2 is ozone, and ozone produces the hydroxyl of strong oxidizing property under catalysis oxidation filler effect
Organic matter in free radical cracking organic wastewater reverse osmosis concentrated water, catalysis oxidation filler is the work for being loaded with iron, copper, manganese, nickel, cerium
Property charcoal catalysis oxidation filler, the activated carbon catalysis oxide filler with activated carbon as carrier, by immersion, calcining make iron, copper, manganese,
Nickel, cerium are carried on activated carbon.
5. the organic wastewater reverse osmosis concentrated water according to any one of claim 1-3 is aoxidized and desalination process, and its feature exists
In the softening agent employed in the step 3 is NaOH, Ca (OH)2、Na2CO3、Na2SO4In any one or several, soften anti-
The pH for answering is 9-12, and preferred pH is 10-11.
6. the organic wastewater reverse osmosis concentrated water according to any one of claim 1-3 is aoxidized and desalination process, and its feature exists
In the coagulant employed in the step 4 is PAC and/or PFS, and the flocculation aid employed in the step 4 is PAM.
7. organic wastewater reverse osmosis concentrated water according to claim 5 is aoxidized and desalination process, it is characterised in that the step
Neutralization reaction is carried out using any one in acetic acid, hydrochloric acid and sulfuric acid in 6, the pH after neutralization reaction is 6-8, preferred pH is 7.
8. the organic wastewater reverse osmosis concentrated water according to any one of claim 1-3 is aoxidized and desalination process, and its feature exists
In carrying out multi-medium filtering using except iron, demanganization filtrate in the step 7.
9. organic wastewater reverse osmosis concentrated water according to claim 4 is aoxidized and desalination process, it is characterised in that using filling
Ozone in activated carbon catalysis oxide filler catalytic decomposition ozonisation tail gas.
10. a kind of organic wastewater reverse osmosis concentrated water is aoxidized and desalination system, it is characterised in that including：
There is first-stage reverse osmosis film, the first-stage reverse osmosis film one-level water inlet, primary concentration water delivery port and one-level water purification to go out
The mouth of a river；
Oxidation reactor, the oxidation reactor has oxidation water inlet, oxidation delivery port, ozone inlet and offgas outlet,
The oxidation water inlet is connected with the primary concentration water delivery port；
Vent ozone destructor, the vent ozone destructor is connected with the offgas outlet；
Soften reactor, the softening reactor have soften water inlet and soften delivery port, the softening water inlet with it is described
Oxidation delivery port is connected；
Coagulation reactor, the coagulation reactor has coagulation water inlet and a coagulation delivery port, the coagulation water inlet with it is described
Soften delivery port to be connected；
Efficient settler, the efficient settler have precipitation water inlet and precipitation delivery port, the precipitation water inlet with it is described
Coagulation delivery port is connected；
Neutralization reactor, the neutralization reactor have neutralize water inlet and neutralize delivery port, the neutralization water inlet with it is described
Precipitation delivery port is connected；
More medium filter, the more medium filter has filtered water inlet mouthful and a filtering delivery port, the filtered water inlet mouthful with
The neutralization delivery port is connected；
Ultrafiltration apparatus, the ultrafiltration apparatus have ultrafiltration water inlet and ultra-filtration water mouthful, the ultrafiltration water inlet and the filtering
Delivery port is connected；
There are two-pass reverse osmosis film, the two-pass reverse osmosis film two grades of water inlets, secondary concentration water delivery port and two grades of water purification to go out
The mouth of a river, two grades of water inlets are connected with the ultra-filtration water mouthful；
Vaporising device, the vaporising device is connected with the secondary concentration water delivery port.
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| CN109231549A (en) * | 2018-09-29 | 2019-01-18 | 淄博永丰环保科技有限公司 | A kind of application of the reverse osmosis concentrated water that paper industry generates in deicing salt |
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| CN109851162A (en) * | 2019-01-18 | 2019-06-07 | 中国石油工程建设有限公司 | A kind of oil gas field brine waste treatment process up to standard |
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