CN107265751A - A kind of handling process of cellulose waste water - Google Patents
A kind of handling process of cellulose waste water Download PDFInfo
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- CN107265751A CN107265751A CN201710353552.4A CN201710353552A CN107265751A CN 107265751 A CN107265751 A CN 107265751A CN 201710353552 A CN201710353552 A CN 201710353552A CN 107265751 A CN107265751 A CN 107265751A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229920002678 cellulose Polymers 0.000 title claims abstract description 26
- 239000001913 cellulose Substances 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 26
- 238000005286 illumination Methods 0.000 claims abstract description 16
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 239000007800 oxidant agent Substances 0.000 claims abstract description 4
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- 238000001704 evaporation Methods 0.000 claims description 9
- 230000008020 evaporation Effects 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 238000000909 electrodialysis Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000005276 aerator Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000010612 desalination reaction Methods 0.000 claims description 2
- 150000007529 inorganic bases Chemical class 0.000 claims description 2
- 238000003828 vacuum filtration Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 125000002081 peroxide group Chemical group 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001448 ferrous ion Inorganic materials 0.000 abstract description 6
- 239000003054 catalyst Substances 0.000 abstract description 5
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 9
- 239000010408 film Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- -1 hydroxyl radical free radical Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 150000003384 small molecules Chemical class 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 2
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 2
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 2
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011707 mineral Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000258 photobiological effect Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
-
- 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
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of handling process of cellulose waste water, it is related to technical field of waste water processing, comprises the following steps：1. it is first quenched：The pH value of waste water is adjusted to 2 ~ 5；2. illumination is aoxidized：Oxidant is added in waste water after will be quenched for the first time, illumination oxidation processes are carried out, processing time is 0.5 ~ 10 hour；3. it is secondary quenched：PH value of waste water after illumination is aoxidized is adjusted to 6 ~ 8；4. biochemical treatment：By it is secondary it is quenched after waste water carry out biological oxidation processing.The technique does not use ferrous ion catalyst in illumination oxidation reaction, still is able to reach higher COD clearances, and solve generation and the process problem of molysite mud accessory substance.
Description
Technical field
The present invention relates to technical field of waste water processing, in particular to a kind of handling process of cellulose waste water.
Background technology
It is etherified in the production process of cellulose ether firstly the need of the alkali for adding excess, then the acid in need that adds is carried out
Neutralize, the solution containing a large amount of sodium salts can be produced during acid-base neutralization, organic solvent that the remaining reaction stage adds and
The portion of cellulose not arrived by supplementary set, together constitutes the cellulose waste water of great characteristic, and its COD content may be up to 8000 mg/
More than L, belongs to high salt concentration, the waste water of difficult degradation, and it is always to make the problem of row professional has a headache that it, which is handled,.
And in existing method of wastewater treatment, the catalysis of light Fenton is that front line science is studied and is applicable with biological treatment
In the processing scheme of used water difficult to degradate.
Light Fenton is catalyzed, the chemical reaction carried out exactly in the presence of light, the molecule under the catalytic action of ferrous ion
The electromagnetic radiation of specific wavelength is absorbed, excited molecule transits to excitation state, then can occur the new material of chemical reaction generation, or
Person becomes to trigger the middle chemical product of thermal response.Light Fenton catalysis technique is mutually tied using ultraviolet excitation oxidation with light radiation
Close, with the characteristics of producing the hydroxyl radical free radical (OH) with Strong oxdiative ability, be oxidized to the larger molecular organicses of difficult degradation
It is oxidized to CO2、H2O, mineral salt, low toxicity or nontoxic small-molecule substance, non-secondary pollution.
, will and biological treatment then utilizes aerobic bacteria or anaerobic bacteria itself to the capacity of decomposition of macromolecular long-chain organic matter
Larger molecular organicses in used water difficult to degradate are decomposed into CO2、H2O, inorganic matter and small-molecule substance, enable waste water to reach reuse
Or discharge standard.
There is the China of the precedent that the two is mutually combined and handled waste water, such as A of Publication No. CN 1636893 in the prior art
Patent of invention disclose a kind of light help Fenton's reaction, flocculation and microbial degradation combination processing waste water method, for handle compared with
The poisonous organic wastewater of high concentration, it carries out light and helps Fenton's reaction, adds flocculant and flocculated first, finally carries out micro- life
Thing degradation treatment, three kinds of technology combinations, the COD clearances of poisonous organic wastewater can reach more than 76.2%, but handle fiber with it
The effect of plain waste water need to be investigated, and the useless mud accessory substance of substantial amounts of molysite can be produced in processing procedure, increases processing cost
And pollution environment.
Application publication number is disclosed at a kind of iris type photo-biological sewage for the A of CN 102442749 Chinese invention patent
Equipment is managed, the also combination for two kinds for the treatment of technologies provides reference mode, and it make it that photocatalysis oxidation reaction and biological treatment are same
Shi Jinhang, collaboration is handled waste water, if the processing suitable for cellulose waste water still waits to discuss.
The content of the invention
Present invention aim to provide a kind of handling process of cellulose waste water, for hydroxypropyl methyl cellulose life
Production etc. does not use ferrous ion catalyst in the cellulose wastewater treatment in field in illumination oxidation reaction, still be able to reach compared with
High COD clearances, and solve generation and the process problem of molysite mud accessory substance.
To achieve the above object, a kind of handling process for cellulose waste water that the present invention is designed, comprises the following steps：
1. it is first quenched：The pH value of waste water is adjusted to 2 ~ 5；
2. illumination is aoxidized：Will it is first it is quenched after waste water in add oxidant, carry out illumination oxidation processes, processing time is 0.5 ~
10 hours；
3. it is secondary quenched：PH value of waste water after illumination is aoxidized is adjusted to 6 ~ 8；
4. biochemical treatment：By it is secondary it is quenched after waste water carry out biological oxidation processing,.
As the preferred of above-mentioned technical proposal, 1. step also includes filtration step before：Cellulose waste water is filtered,
Remove visible suspension in waste water.
As the preferred of above-mentioned technical proposal, step 2. in oxidant used be peroxide, predominantly hydrogen peroxide and
Sodium peroxide, it is the 1 ~ 10% of wastewater quality to add quality.
Inventor is found surprisingly that, for cellulose waste water, even if without ferrous ion in illumination oxidation step
As catalyst, its COD clearance still is able to reach more than 70%, and its principle is probably irradiation of the peroxide in ultraviolet light
Lower accelerated decomposition is hydroxyl radical free radical, and then the organic matter of macromolecular difficult degradation is aoxidized, and promotes it to be decomposed into titanium dioxide
Carbon, water and small-molecule substance.
As the preferred of above-mentioned technical proposal, step 2. employed in light source be ultraviolet light, dominant wavelength is 254nm.
As the preferred of above-mentioned technical proposal, step 2. after, step 3. before also include desalination concentration step：By illumination
Waste water after oxidation carries out film concentration and/or evaporation and concentration.
As the preferred of above-mentioned technical proposal, the film concentration is membrane distillation or electrodialysis；Described be concentrated by evaporation is multiple-effect
Evaporation or MVR evaporations.
Membrane distillation is the membrane separating process that membrane technology is combined with still-process, and it is using dewatering microporous film as medium, in film
In the presence of the vapour pressure deficit of both sides, volatile component passes through fenestra in vapour form in feed liquid, so that the purpose of separation is realized, its
Separative efficiency is high, operating condition is gentle, not high to the mechanical property requirements of film and material liquid interphase interaction and film；
When carrying out dialysis under electric field action, the powered solute particles in solution（Such as ion）The phenomenon migrated by film claims
For electrodialysis, its operating cost is relatively low for the membrane process such as counter-infiltration, and running is stable；
Multiple-effect evaporation indirect steam produced when can be evaporated using previous effect is heated, and heat energy has been used repeatedly,
Heat energy consumption can be significantly reduced；
And MVR evaporations use monomer evaporator, integrate multiple-effect falling film evaporator, the steam of generation is evaporated first through overcompression
Improve and liquid heating is re-used for after vapor (steam) temperature.Also according to required product concentration difference segmented can be taken to evaporate, i.e. product
Needed for can not being reached after imitating body in first time during concentration, product will be produced after effect body is left by imitating the vavuum pump of body bottom
Product are extracted into effect body top again by effect body by imitating body exterior line, then by this effect body that iterates through with needed for reaching
Concentration.
As the preferred of above-mentioned technical proposal, the filtration step is using vacuum filtration or plate compression.
As the preferred of above-mentioned technical proposal, step 4. in by secondary quenched waste water using aerobe carry out biochemistry at
Reason.
As the preferred of above-mentioned technical proposal, 4. step sets aerator in middle bioreactor, is persistently exposed during reaction
Gas 8 ~ 16 hours.
As the preferred of above-mentioned technical proposal, 1. step adjusts the pH value of waste water using inorganic acid；Step is 3. using inorganic
Alkali adjusts the pH value of waste water.
Wherein inorganic acid can be hydrochloric acid, sulfuric acid etc., and inorganic base can be sodium hydroxide, potassium hydroxide, ammoniacal liquor etc..
The present invention compared with prior art, with advantages below and beneficial effect：
（1）Technique of the present invention is applied to processing cellulose waste water, high treating effect, can will be in cellulose waste water it is exhausted big
Partial organic substances mineralising, biodegradability is improved, and reaction condition is gentle, normal temperature and pressure, it is easy to accomplish；
（2）Technique of the present invention does not use ferrous ion catalyst in illumination oxidation step, is remained to only by the step
Enough reach more than 70% COD clearances；
（3）Technique of the present invention realizes the zero-emission of the useless mud of molysite, meets the theory of environmental protection, reduces and be processed into
This；
（4）Waste water after being handled through process of the present invention can reach reuse or discharge water quality standard.
Embodiment
With reference to specific embodiment, the present invention is described in further detail：
Technological parameter involved by embodiment 1 ~ 6 is shown in Table 1, and wherein embodiment 1-4 waste water produces for hydroxypropyl methyl cellulose
Waste water, the waste water of embodiment 5 produces waste water for methylcellulose, and the waste water of embodiment 6 is hydroxyethyl cellulose waste water.
The technological parameter of the handling process of cellulose waste water described in the embodiment 1 ~ 6 of table 1
The treatment effect of waste water is shown in Table 2 in embodiment 1 ~ 6：
The treatment effect parameter of the handling process of waste water described in the embodiment 1 ~ 6 of table 2
From table 2, the application is in filtration step except taking out macroscopic bulky grain suspension beyond the region of objective existence, additionally it is possible to remove part
COD, makes the reduction of its content；In illumination oxidation step, ferrous ion catalyst is not used and is reacted, COD clearance can
Reach after more than 70%, then concentrated salt-removal steps, water quality can be handled using biochemical method, carrying out Aerobic biological process is
It can reach recycle water standard.
Claims (10)
1. a kind of handling process of cellulose waste water, it is characterised in that comprise the following steps：
1. it is first quenched：The pH value of waste water is adjusted to 2 ~ 5；
2. illumination is aoxidized：Will it is first it is quenched after waste water in add oxidant, carry out illumination oxidation processes, processing time is 0.5 ~
10 hours；
3. it is secondary quenched：PH value of waste water after illumination is aoxidized is adjusted to 6 ~ 8；
4. biochemical treatment：By it is secondary it is quenched after waste water carry out biological oxidation processing,.
2. a kind of handling process of cellulose waste water according to claim 1, it is characterised in that：1. step also includes before
Filtration step：Cellulose waste water is filtered, visible suspension in waste water is removed.
3. a kind of handling process of cellulose waste water according to claim 1, it is characterised in that：Step 2. in used aoxidize
Agent is peroxide, and it is the 1 ~ 10% of wastewater quality to add quality.
4. a kind of handling process of cellulose waste water according to claim 1, it is characterised in that：Step 2. employed in
Light source is ultraviolet light, and dominant wavelength is 254nm.
5. a kind of handling process of cellulose waste water according to claim 1, it is characterised in that：Step 2. after, step
3. desalination concentration step is also included before：Waste water after illumination is aoxidized carries out film concentration and/or evaporation and concentration.
6. a kind of handling process of cellulose waste water according to claim 5, it is characterised in that：The film concentration is steamed for film
Evaporate or electrodialysis；Described be concentrated by evaporation is that multiple-effect evaporation and/or MVR evaporate.
7. a kind of handling process of cellulose waste water according to claim 2, it is characterised in that：The filtration step is used
Vacuum filtration or plate compression.
8. a kind of handling process of cellulose waste water according to claim 1, it is characterised in that：Step 4. in by it is secondary adjust
The waste water of matter carries out biochemical treatment using aerobe.
9. a kind of handling process of cellulose waste water according to claim 8, it is characterised in that：Step 4. middle biological respinse
Aerator is set in device, is persistently aerated during reaction 8 ~ 16 hours.
10. a kind of handling process of cellulose waste water according to claim 1, it is characterised in that：Step is 1. using inorganic
The pH value of acid regulation waste water；3. step adjusts the pH value of waste water using inorganic base.
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| CN104016511A (en) * | 2014-05-27 | 2014-09-03 | 轻工业环境保护研究所 | Ozone / photocatalysis oxidation-membrane separation integrated method and integrated set for advanced wastewater treatment |
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2017
- 2017-05-18 CN CN201710353552.4A patent/CN107265751A/en active Pending
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|---|---|---|---|---|
| CN1611454A (en) * | 2003-10-27 | 2005-05-04 | 中国科学院化学研究所 | Method for photo-oxidative flocculating treatment of organic pollutant waster water |
| CN1699211A (en) * | 2005-05-11 | 2005-11-23 | 江南大学 | Clean production process for spinning by using advanced oxidation method to decompose polyvinyl alcohol pulp of fabric |
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