CN108751328A - A kind of deodorizing method of acid water in viscose rayon industry - Google Patents
A kind of deodorizing method of acid water in viscose rayon industry Download PDFInfo
- Publication number
- CN108751328A CN108751328A CN201810632127.3A CN201810632127A CN108751328A CN 108751328 A CN108751328 A CN 108751328A CN 201810632127 A CN201810632127 A CN 201810632127A CN 108751328 A CN108751328 A CN 108751328A
- Authority
- CN
- China
- Prior art keywords
- acid water
- activated carbon
- viscose rayon
- parsing
- rayon industry
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 239000002253 acid Substances 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 62
- 229920000297 Rayon Polymers 0.000 title claims abstract description 46
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 196
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000001179 sorption measurement Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 22
- 238000011282 treatment Methods 0.000 claims description 22
- 239000003610 charcoal Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 9
- QYSGYZVSCZSLHT-UHFFFAOYSA-N octafluoropropane Chemical compound FC(F)(F)C(F)(F)C(F)(F)F QYSGYZVSCZSLHT-UHFFFAOYSA-N 0.000 claims description 9
- 229960004065 perflutren Drugs 0.000 claims description 9
- 230000005587 bubbling Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- QGJOPFRUJISHPQ-UHFFFAOYSA-N carbon disulfide Substances S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 70
- 239000000243 solution Substances 0.000 description 26
- 238000004519 manufacturing process Methods 0.000 description 12
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 10
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 10
- 238000011160 research Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000004332 deodorization Methods 0.000 description 5
- 230000009967 tasteless effect Effects 0.000 description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000000274 adsorptive effect Effects 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- -1 sulfur oxide compound Chemical class 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
-
- 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
- C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a kind of deodorizing methods of the acid water in viscose rayon industry, it is therefore an objective to the directly outer acid water arranged be carried out stink processing, recycled.It mainly comprises the following steps：Using activated carbon to the H in acid water2S、CS2, impurity etc. adsorbed, obtain transparent recyclable acid water without taste；Hydrogen peroxide under alkaline condition parses activated carbon, and the activated carbon after parsing continues to repeat adsorption process.The present invention not only can also reduce the discharge of effluent part with cleaning shop air, save water resource, improve Business Economic Benefit.
Description
Technical field
The present invention relates to a kind of deodorizing methods of the acid water in viscose rayon industry, belong to the acid in field of viscose fiber
Property field of waste water treatment.
Background technology
In face of the present situation of water resource constantly exhaustion, all improved on the Process ba- sis that traditional wastewater is administered in world wide
It deepens reforms more efficiently water body treating scheme, the main reason for wherein industrial wastewater is water pollution, it is multiple that there is ingredients
Miscellaneous, the problems such as property is changeable, it is to save the most important thing of water resource to carry out processing to industrial wastewater.Wherein viscose rayon industry is given birth to
Water consumption, air consumption are larger during production, therefore the energy-saving main task as viscose rayon industry to greatest extent.By
The water quality index of the sewage discharged after primary treatment should reach integrated wastewater discharge standard GB8978-1996 grade III Standards：Outer row
The control of sewage sulfide content is in 1.0mg/L hereinafter, COD contents are controlled in 500mg/L hereinafter, zinc ion content control exists
5.0mg/L following.The directly outer acid water water arranged is big in viscose rayon industry, mainly contains H2S、CS2Sulfides, it is right
H2S、CS2Handle going to eliminate the unusual smell and the recycling of acid water can be realized, realize energy-saving and emission-reduction, enterprise is made to keep competitiveness.
H in waste water at present2The minimizing technology of S includes mainly Air Exposure method, complex iron, Ozonation, biochemical process
Deng, but all there is respective or complex process or have secondary pollution in these methods, and universal cost is higher.
Invention content
Technical problem to be solved by the invention is to provide a kind of deodorizing methods of the acid water in viscose rayon industry, can
To utilize the strong feature of large specific surface area, the adsorption capacity of activated carbon, removal super low concentration sulfide (H2S、CS2Deng) and technique
Simply, non-secondary pollution, it is of low cost, it is particularly suitable for large-scale industrial production.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of deodorization of acid water in viscose rayon industry
Method includes the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S and CS2；
(2) it uses activated carbon as adsorbing medium, activated carbon is filled in filter device, acid water is passed through filtering dress
Set carry out adsorption treatment；
(3) it is arranged outside the liquid after adsorption treatment, periodically sampling carries out gas content survey in the ambient enviroment at discharge outlet
It is fixed；
(4) if the content of the H2S and CS2 that measure are consistently less than equal to setting value, until quantitative acid water process is complete, it will
Activated carbon parses activated carbon in being taken out in filter device, with hydrogen peroxide, and the activated carbon after parsing is re-used for step
(2) adsorption treatment repeats the process of absorption-parsing, if the content of the H2S and CS2 that measure are greater than the set value, selects newly
Activated carbon re-starts step (2).
The beneficial effects of the invention are as follows：By carrying out deodorization research to the acid water in viscose rayon industry, can utilize
H in acid water in activated carbon adsorption viscose rayon industry2S, CS2Equal substances, and turbidity is reduced, to achieve the purpose that deodorization,
And hydrogen peroxide parsing regeneration is carried out so that it can recycle, until reaching its service life to activated carbon.Using such place
Reason method can recycle the directly outer acid water arranged originally, reused, not only purified workshop air, also achieve section
Energy emission reduction, it is simple for process, it is very suitable for industrialized production.
The present invention is directed to the acid water in viscose rayon industry and carries out deodorization research, mainly comprises the following steps：Utilize activated carbon pair
H in acid water2S、CS2, impurity etc. adsorbed, obtain transparent recyclable acid water without taste；Hydrogen peroxide is in alkalinity
Under the conditions of activated carbon is parsed, the activated carbon after parsing continue repeat absorption-resolving.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in step (1), the H in acid water in the viscose rayon industry2S contents are 60-100ppm, CS2
Content is 30-50ppm.Before processing, the acid water in viscose rayon industry is in faint yellow, has rotten-egg odour, this is because it contains
Have a certain amount of H2S, CS2 and caused by.
Advantageous effect using above-mentioned further scheme is that the activated carbon adsorptive capacity that the present invention uses is strong, not only will be acid
H in water2S、CS2It is adsorbed, effective processing also has been carried out to the turbidity of water quality and coloration, and physical absorption is not produced
Raw any pollutant, process safety environmental protection.
Further, the mode that the acid water in the viscose rayon industry is passed through filter device is bottom in and top out, and
Flow velocity is 200-400mL/min.
Further, in step (2), the flow velocity of the acid water in viscose rayon industry is corresponded to, the dosage of the activated carbon is
700-900g。
It is activated carbon for porous structure substance, large specific surface area, adsorption energy to use the advantageous effect of above-mentioned further scheme
Power is strong, can remove super low concentration sulfide and simple for process, non-secondary pollution, and makes acid water with certain flow rate bottom in and top out
Can be come into full contact with activated carbon, with upper entering and lower leaving or laterally across set-up mode compared with, adsorption effect can be improved
25%.
Further, it in step (3), is sampled in the ambient enviroment at discharge outlet every 1h and carries out gas content test.
Further, in step (3), the Determination of octafluoropropane content method is detector tube measuring method, and the setting value is 0,
The H of measurement2S and CS2Content always be equal to 0 when, parse pre-treatment acid water and activated carbon mass ratio be 550:1.Work as survey
Fixed H2S and CS2Content be equal to 0 when, acid water be colorless and odorless state.
Detection tube method be in textile industry common gas detection method (for details, reference can be made to standard GB/T/
Measurement-part 2 of T33610.2-2017- textiles-deodorization：Detection tube method).Detector tube is called detector tube, be according into
The depth of sample size and the reagent discoloration entered or the length of color change portion, judge gas content by means of standard color range, make
Used time cuts its both ends, and silica gel or oxidation aluminium glue are loaded in the front and back end of detection reagent, the characteristics of detector tube be it is simple,
It is light, easy to operate, it can be used for detecting toxic or pernicious gas, such as acetylene, chlorine, mercury vapour, ammonia, ethylene, hydrogen sulfide, nitrogen oxidation
Object, carbon disulfide etc..
The purpose of the present invention is exactly to remove the stink of acid water, makes H in acid water2S、CS2Concentration control smelling in people
Threshold is felt hereinafter, since its lower limit is extremely low, so the H measured on the assay method based on the present invention2S、CS2A concentration of 0 (the present invention
The gas content that detector tube used measures is ppm grade, can not measured if gas content is less than ppm grades of detector tubes if treated
Come, thinks that the absorption of activated carbon is complete when being shown as 0) on scale, treated, and acid water reaches reuse or discharge standard.
Advantageous effect using above-mentioned further scheme is the reacting by detection agent and detected gas in detector tube
And there is color change, to indicate the gas concentration in surveyed environment, this mensuration mode is with easy to operate, use scope is wide
Feature general, detection is accurate, real-time and at low cost.Simultaneously in view of the cost of detection and the change of activated carbon adsorptive capacity
Change curve, selectes and carry out a gas content test every 1h, activated carbon adsorptive capacity is when keeping high levels, the suction in 1h
Attached capacity variation is little, and such interval time also complies with the demand of industrialized production.Control acid water and the work of single cycle
The mass ratio most preferably 550 of property charcoal:1, this is the income that combination processing waste water recycling is brought the considerations of being in cost, and place
During reason, the activated carbon and hydrogen peroxide of consumption are weighed.
Further, in step (4), parsing hydrogen peroxide uses mass fraction for 32% hydrogen peroxide solution, and proportion is
1.11g/L。
Further, in step (4), the temperature of parsing is 40-60 DEG C, parsing to activated carbon in desorbed solution not bubbling then
It is parsed, activated carbon is taken out and is re-used for the adsorption treatments of step (2) after drying, control PH is between 8-11 when parsing.
Further, the reagent for PH being adjusted when parsing is the NaOH solution that mass fraction is 30%, proportion 1.32g/L.
Further, in step (4), when parsing, the H in hydrogen peroxide solution2O2With quality of activated carbon than control 1:8-1:
10。
Advantageous effect using above-mentioned further scheme is parsed to the activated carbon of adsorption saturation using hydrogen peroxide, peroxidating
Hydrogen is all strong oxidizer under acid and alkaline condition, but reaction speed is very slow in acid condition for hydrogen peroxide, in alkaline condition
Lower reaction speed greatly improves, this is because it is H that hydrogen peroxide ionizes in aqueous solution+And HO2 -(hydroperoxy- radical ion), this mistake
Journey is reversible process, under alkaline condition OH-It can be with H+Reaction, make hydrogen peroxide constantly ionize a large amount of peroxide hydrogen radical of generation from
Son, participate in sulfur oxide compound reaction process (hydrogen peroxide oxidation sulfide is elemental sulfur under neutral and slightly acidic condition,
Sulfate radical is generated under alkaline condition, activated carbon takes out drying after parsing, and remaining liq is discharged into bilge well after being adjusted to neutrality).Separately
Outer hydrogen peroxide nature is stablized, can long term storage, price economy is suitable for industrialized production.
In the art, acid water is directly outer row, can bring serious pollution and waste, and some existing processing
Method is essentially all direct oxidation or complexing, and processing cost is high, and will produce various problems.And in the present invention, it is
First with the absorption of activated carbon, hydrogen peroxide is recycled to parse activated carbon, processing cost is low, simple for process, meets industry
Metaplasia production demand, this is acid water deodoring mode create by applicant in viscose rayon industry, and for absorption with
The particular technique parameter of the detailed process of parsing, such as the flow direction of acid water and flow velocity, the dosage of activated carbon, single cycle processing
The amount of acid water, the reagent of parsing and its concentration and dosage, the time of parsing and temperature, the pH value etc. for parsing control are all
Applicant combines various productions to need to imitate with technology on the basis of determining acid water deodoring mode, by a large amount of research and development test
Fruit and the optimum producting condition obtained are showed no relevant report in the existing technology of these technical characteristics.
Specific implementation mode
The principles and features of the present invention are described below, and the given examples are served only to explain the present invention, is not intended to limit
Determine the scope of the present invention.
Present invention relates particularly to a kind of deodorizing methods of the acid water in viscose rayon industry, include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S (60-100ppm) and CS2(30-50ppm), in light
Yellow has rotten-egg odour；
(2) it uses activated carbon as adsorbing medium, activated carbon is filled in filter device, acid water is passed through filtering dress
Set carry out adsorption treatment；Filter device can select the tubular structure of φ 50mm, long 1m, be vertically arranged, interior to load 700-
900g activated carbons, acid water with the flow velocity of 200-400mL/min by below filter device into going out above, continuously in acid water
H2S、CS2, the substances such as impurity continuously adsorbed, obtain as clear as crystal, colorless and odorless acid water；
(3) it is arranged outside the liquid after adsorption treatment, periodically sampling carries out gas content survey in the ambient enviroment at discharge outlet
It is fixed；It can specifically be sampled every 1h and carry out Determination of octafluoropropane content, method for measuring is detector tube measuring method；
(4) if the H measured2S and CS2Content be consistently less than equal to setting value, until quantitative acid water is all handled
It is complete, by activated carbon in being taken out in filter device, activated carbon is parsed with hydrogen peroxide, the activated carbon after parsing is re-used for
The adsorption treatment of step (2) repeats the process of absorption-parsing；If quantitative acid water has all handled the H of measurement2S and CS2's
Content is greater than the set value, it may be considered that activated carbon currently in use loses activity, it should give up, and select new activity
Charcoal re-starts step (2)；
Setting value can be according to, to the requirement of waste water, being set as 0 in national standard；Quantitative acid water according to measuring and calculating,
The mass ratio of acid water and activated carbon is 550:When 1, cost and effect are taken into account, there is preferable practicability；
Parsing the specific steps are：It is 32% hydrogen peroxide solution (proportion 1.11g/L) to take mass fraction, with quality point
Number for 30% NaOH solutions (proportion 1.32g/L) adjust solution pH value between 8-11, by the activated carbon of taking-up as
In solution, the H in solution2O2With quality of activated carbon than control 1:8-1:10, control temperature is at 40-60 DEG C, parsing to activated carbon
It is not parsed then in bubbling in desorbed solution, activated carbon is taken out to the adsorption treatment for being re-used for step (2) after drying.
The technique effect of technical solution of the present invention is analyzed below by way of specific embodiment.
Embodiment 1
The present invention relates to the acid water deodoring researchs in viscose rayon industry, include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S (60-100ppm) and CS2(30-50ppm), in light
Yellow has rotten-egg odour；
(2) to φ 50mm, long 1m filter device in load 700g activated carbons, acid water with the flow velocity of 200mL/min by
Bottom in and top out, continuously to the H in acid water2S、CS2, the substances such as impurity carry out continuous adsorption process, obtain as clear as crystal, colourless
Tasteless acid water；
(3) it is arranged outside the liquid after adsorption treatment, samples in the ambient enviroment at discharge outlet every 1h and surveyed by detector tube
Determine method and carries out Determination of octafluoropropane content；
(4) if the H measured2S and CS2Content be consistently equal to 0, until quality be 900 times of activated carbon acid water all at
It has been managed that, by activated carbon in being taken out in filter device, the hydrogen peroxide for being 32% with mass fraction is in pH value under 8 alkaline condition
(the specific NaOH solution for being 30% with mass fraction adjusts pH value) parses activated carbon, the H in solution2O2With activated carbon
Mass ratio is controlled 1:8, resolution temperature is 40 DEG C, and parsing is not parsed then to activated carbon in desorbed solution in bubbling, will be lived
Property charcoal take out drying after be re-used for the adsorption treatments of step (2), repeat the process of absorption-parsing；If the H measured2S and CS2's
Content is greater than the set value, it may be considered that activated carbon currently in use loses activity, it should give up, and select new activity
Charcoal re-starts step (2).
Embodiment 2
The present invention relates to the acid water deodoring researchs in viscose rayon industry, include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S (60-100ppm) and CS2(30-50ppm), in light
Yellow has rotten-egg odour；
(2) to φ 50mm, long 1m filter device in load 800g activated carbons, acid water with the flow velocity of 300ml/min by
Bottom in and top out, continuously to the H in acid water2S、CS2, the substances such as impurity carry out continuous adsorption process, obtain as clear as crystal, colourless
Tasteless acid water；
(3) it is arranged outside the liquid after adsorption treatment, samples in the ambient enviroment at discharge outlet every 1h and surveyed by detector tube
Determine method and carries out Determination of octafluoropropane content；
(4) if the H measured2S and CS2Content be consistently equal to 0, until quality be 800 times of activated carbon acid water all at
It has been managed that, by activated carbon in being taken out in filter device, the hydrogen peroxide for being 32% with mass fraction is in pH value under 9 alkaline condition
(the specific NaOH solution for being 30% with mass fraction adjusts pH value) parses activated carbon, the H in solution2O2With activated carbon
Mass ratio is controlled 1:9, resolution temperature is 50 DEG C, and parsing is not parsed then to activated carbon in desorbed solution in bubbling, will be lived
Property charcoal take out drying after be re-used for the adsorption treatments of step (2), repeat the process of absorption-parsing；If the H measured2S and CS2's
Content is greater than the set value, it may be considered that activated carbon currently in use loses activity, it should give up, and select new activity
Charcoal re-starts step (2).
Embodiment 3
The present invention relates to the acid water deodoring researchs in viscose rayon industry, include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S (60-100ppm) and CS2(30-50ppm), in light
Yellow has rotten-egg odour；
(2) to φ 50mm, long 1m filter device in load 700g activated carbons, acid water with the flow velocity of 400ml/min by
Bottom in and top out, continuously to the H in acid water2S、CS2, the substances such as impurity carry out continuous adsorption process, obtain as clear as crystal, colourless
Tasteless acid water；
(3) it is arranged outside the liquid after adsorption treatment, samples in the ambient enviroment at discharge outlet every 1h and surveyed by detector tube
Determine method and carries out Determination of octafluoropropane content；
(4) if the H measured2S and CS2Content be consistently equal to 0, until quality be 550 times of activated carbon acid water all at
It has been managed that, by activated carbon in being taken out in filter device, the hydrogen peroxide for being 32% with mass fraction is in pH value under 10 alkaline condition
(the specific NaOH solution for being 30% with mass fraction adjusts pH value) parses activated carbon, the H in solution2O2With activated carbon
Mass ratio is controlled 1:10, resolution temperature is 60 DEG C, and parsing is not parsed then to activated carbon in desorbed solution in bubbling, will be lived
Property charcoal take out drying after be re-used for the adsorption treatments of step (2), repeat the process of absorption-parsing；If the H measured2S and CS2's
Content is greater than the set value, it may be considered that activated carbon currently in use loses activity, it should give up, and select new activity
Charcoal re-starts step (2).
Embodiment 4
The present invention relates to the acid water deodoring researchs in viscose rayon industry, include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S (60-100ppm) and CS2(30-50ppm), in light
Yellow has rotten-egg odour；
(2) to φ 50mm, long 1m filter device in load 800g activated carbons, acid water with the flow velocity of 350ml/min by
Bottom in and top out, continuously to the H in acid water2S、CS2, the substances such as impurity carry out continuous adsorption process, obtain as clear as crystal, colourless
Tasteless acid water；
(3) it is arranged outside the liquid after adsorption treatment, samples in the ambient enviroment at discharge outlet every 1h and surveyed by detector tube
Determine method and carries out Determination of octafluoropropane content；
(4) if the H measured2S and CS2Content be consistently equal to 0, until quality be 500 times of activated carbon acid water all at
It has been managed that, by activated carbon in being taken out in filter device, the hydrogen peroxide for being 32% with mass fraction is in pH value under 11 alkaline condition
(the specific NaOH solution for being 30% with mass fraction adjusts pH value) parses activated carbon, the H in solution2O2With activated carbon
Mass ratio is controlled 1:8, resolution temperature is 45 DEG C, and parsing is not parsed then to activated carbon in desorbed solution in bubbling, will be lived
Property charcoal take out drying after be re-used for the adsorption treatments of step (2), repeat the process of absorption-parsing；If the H measured2S and CS2's
Content is greater than the set value, it may be considered that activated carbon currently in use loses activity, it should give up, and select new activity
Charcoal re-starts step (2).
Embodiment 5
The present invention relates to the acid water deodoring researchs in viscose rayon industry, include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S (60-100ppm) and CS2(30-50ppm), in light
Yellow has rotten-egg odour；
(2) to φ 50mm, long 1m filter device in load 900g activated carbons, acid water with the flow velocity of 250ml/min by
Bottom in and top out, continuously to the H in acid water2S、CS2, the substances such as impurity carry out continuous adsorption process, obtain as clear as crystal, colourless
Tasteless acid water；
(3) it is arranged outside the liquid after adsorption treatment, samples in the ambient enviroment at discharge outlet every 1h and surveyed by detector tube
Determine method and carries out Determination of octafluoropropane content；
(4) if the H measured2S and CS2Content be consistently equal to 0, until quality be 200 times of activated carbon acid water all at
It has been managed that, by activated carbon in being taken out in filter device, the hydrogen peroxide for being 32% with mass fraction is in pH value under 9 alkaline condition
(the specific NaOH solution for being 30% with mass fraction adjusts pH value) parses activated carbon, the H in solution2O2With activated carbon
Mass ratio is controlled 1:10, resolution temperature is 55 DEG C, and parsing is not parsed then to activated carbon in desorbed solution in bubbling, will be lived
Property charcoal take out drying after be re-used for the adsorption treatments of step (2), repeat the process of absorption-parsing；If the H measured2S and CS2's
Content is greater than the set value, it may be considered that activated carbon currently in use loses activity, it should give up, and select new activity
Charcoal re-starts step (2).
Comparative result is analyzed：
Acid water (case study on implementation 1-5) turbidity of technique purification using the present invention is controlled in 0.872NTU hereinafter, base
Under conditions of different quality ratio and the different activities charcoal of the acid water and activated carbon that are passed through per hour adsorb-parse cycle-index
Corresponding analysis data is laterally and longitudinally compared as follows shown in table.
In upper table, ratio refers to the mass ratio of the acid water and activated carbon that are quantitatively passed through when single activated carbon adsorption, activated carbon
Dosage is the accounting that 1g/ml is converted to that quality carries out mass ratio between 700-900g, and with acid water proportion.Content, which refers to, is arranging
The gas content detected at the mouth of a river, number refer to the number of absorption-parsing cycle.
The present invention has carried out mass ratio：900:1,800:1,550:1,200:1 four groups of experiments, it is lateral right to have carried out
Than finding to reduce with mass ratio by experimental data, the H surveyed2S、CS2Content is gradually reduced, and has been carried out at the same time longitudinal comparison,
It finds to reduce with mass ratio by experimental data, activated carbon cycle-index gradually increases.
Embodiment 1-5 activated carbons cycle-index and cost are analyzed：
1. activated carbon cycle-index
The purpose of the present invention is exactly to remove the stink of acid water, makes H in acid water2S、CS2Concentration control smelling in people
Threshold is felt hereinafter, since its lower limit is extremely low, so the H measured on the assay method based on the present invention2S、CS2Acid is thought when a concentration of 0
Property water reach reuse or discharge standard, still have absorption property when activated carbon is recycled to the 5th time as seen from the above table, but the present invention
Activated carbon cycle-index will consider in conjunction with cost.
2. cost
With the cost of production water per ton for 4.36 yuan, 2300 yuan of the cost of activated carbon per ton, the cost of hydrogen peroxide per ton is
1200 yuan, the molar ratio control of hydrogen peroxide and activated carbon is 1:8-1:It is calculated between 10, in acid water and quality of activated carbon than big
In 550:Less than production water cost when 1, bond quality ratio is 550:Activated carbon recycles most when 1, reaches 3 times, so
Acid water is 550 with quality of activated carbon ratio:It is best when 1, production cost has been saved, large-scale industrialized production is can be used for.
The present invention, using activated carbon to the acid water deodoring research in acid station in viscose rayon industry, in removal acid water
H2S and CS2Efficient, treated, and acid water index meets reuse standard.The method for parsing activated carbon with hydrogen peroxide, makes work
Property charcoal achieve the effect that 3 times recycling.The expense of activated carbon and a small amount of hydrogen peroxide much compensates for directly aquatic using producing
The operating cost of production greatlys save production cost, improves Business Economic Benefit, reduces discharge of wastewater to acid water deodoring reuse
Amount, reduces pollution of the industrial wastewater to water body, solves environmental issue.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of deodorizing method of the acid water in viscose rayon industry, which is characterized in that include the following steps：
(1) acid water in viscose rayon industry is collected, H is contained2S and CS2；
(2) use activated carbon as adsorbing medium, activated carbon is filled in filter device, by acid water be passed through filter device into
Row adsorption treatment；
(3) it is arranged outside the liquid after adsorption treatment, periodically sampling carries out Determination of octafluoropropane content in the ambient enviroment at discharge outlet；
(4) if the H measured2S and CS2Content be consistently less than equal to setting value, will be active until quantitative acid water process is complete
Charcoal parses activated carbon in being taken out in filter device, with hydrogen peroxide, and the activated carbon after parsing is re-used for step (2)
Adsorption treatment repeats the process of absorption-parsing；If the H measured2S and CS2Content be greater than the set value, then select new activity
Charcoal re-starts step (2).
2. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 1, which is characterized in that step
(1) in, the H in acid water in the viscose rayon industry2S contents are 60-100ppm, CS2Content is 30-50ppm.
3. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 1, which is characterized in that step
(2) in, the mode that the acid water in the viscose rayon industry is passed through filter device is bottom in and top out, and flow velocity is 200-
400mL/min。
4. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 3, which is characterized in that step
(2) in, the dosage of the flow velocity of the acid water in corresponding viscose rayon industry, the activated carbon is 700-900g.
5. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 1, which is characterized in that step
(3) it in, is sampled in the ambient enviroment at discharge outlet every 1h and carries out gas content test.
6. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 5, which is characterized in that step
(3) in, the Determination of octafluoropropane content method is detector tube measuring method, and the setting value is 0, in the H of measurement2S and CS2Content
When being equal to 0 always, the mass ratio of the acid water and activated carbon that parse pre-treatment is 550:1.
7. according to the deodorizing method of the acid water in a kind of any one of claim 1 to the 6 viscose rayon industry, feature exists
In in step (4), parsing hydrogen peroxide uses mass fraction for 32% hydrogen peroxide solution, proportion 1.11g/L.
8. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 7, which is characterized in that step
(4) in, the temperature of parsing is 40-60 DEG C, and parsing is not parsed then to activated carbon in desorbed solution in bubbling, and activated carbon is taken
Go out after drying and be re-used for the adsorption treatments of step (2), control PH is between 8-11 when parsing.
9. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 8, which is characterized in that when parsing
The reagent for adjusting PH is the NaOH solution that mass fraction is 30%, proportion 1.32g/L.
10. the deodorizing method of the acid water in a kind of viscose rayon industry according to claim 7, which is characterized in that step
(4) in, when parsing, the H in hydrogen peroxide solution2O2With quality of activated carbon than control 1:8-1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632127.3A CN108751328B (en) | 2018-06-19 | 2018-06-19 | Deodorization method for acidic water in viscose fiber industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632127.3A CN108751328B (en) | 2018-06-19 | 2018-06-19 | Deodorization method for acidic water in viscose fiber industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108751328A true CN108751328A (en) | 2018-11-06 |
| CN108751328B CN108751328B (en) | 2021-07-20 |
Family
ID=63978917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810632127.3A Active CN108751328B (en) | 2018-06-19 | 2018-06-19 | Deodorization method for acidic water in viscose fiber industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108751328B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146155A (en) * | 1974-05-14 | 1975-11-22 | ||
| JPS5599317A (en) * | 1979-01-24 | 1980-07-29 | Hitachi Ltd | Regenerating method for adsorbing agent |
| US4264451A (en) * | 1978-05-22 | 1981-04-28 | City Of Orlando | Water purification method |
| JPS61133197A (en) * | 1984-11-30 | 1986-06-20 | Mitsubishi Kakoki Kaisha Ltd | Method for deodorizing night soil sewage treating apparatus |
| CN1792858A (en) * | 2005-12-30 | 2006-06-28 | 宜宾丝丽雅股份有限公司 | Process for treating acidic waste water of viscose fibre industry |
| CN1872742A (en) * | 2006-06-22 | 2006-12-06 | 葫芦岛北方膜技术工业有限公司 | Technical methd for treating mine wastewater by using membrane technology |
| CN101496993A (en) * | 2009-01-07 | 2009-08-05 | 上海水天环保科技有限公司 | Method and device for processing malodorous gas by active bamboo charcoal-H2O2 complex phase catalytic oxidation |
| JP2009279478A (en) * | 2008-05-20 | 2009-12-03 | Tokyo Electric Power Co Inc:The | Removal method and device for dissolved hydrogen sulfide in water |
| CN105110575A (en) * | 2015-09-28 | 2015-12-02 | 天津市环境保护科学研究院 | Viscose industry waste water treating method and device |
| CN105585146A (en) * | 2014-10-23 | 2016-05-18 | 青岛百键城环保科技有限公司 | A process of treating mine wastewater through applying a membrane technique |
| CN106310890A (en) * | 2015-06-17 | 2017-01-11 | 中国石油化工股份有限公司 | Method for removing acidic gases through biological technology |
| CN205995270U (en) * | 2016-08-25 | 2017-03-08 | 北京实力伟业环保科技有限公司 | A kind of modularity biological tower processing viscose rayon industry Carbon bisulfide and hydrogen sulfide |
| CN206214979U (en) * | 2016-08-03 | 2017-06-06 | 石家庄市滕泰环保设备有限公司 | A kind of vacuum desorption system of carbon disulfide |
| CN206499999U (en) * | 2016-08-03 | 2017-09-19 | 石家庄市滕泰环保设备有限公司 | A kind of tandem adsorption system of carbon disulfide |
-
2018
- 2018-06-19 CN CN201810632127.3A patent/CN108751328B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50146155A (en) * | 1974-05-14 | 1975-11-22 | ||
| US4264451A (en) * | 1978-05-22 | 1981-04-28 | City Of Orlando | Water purification method |
| JPS5599317A (en) * | 1979-01-24 | 1980-07-29 | Hitachi Ltd | Regenerating method for adsorbing agent |
| JPS61133197A (en) * | 1984-11-30 | 1986-06-20 | Mitsubishi Kakoki Kaisha Ltd | Method for deodorizing night soil sewage treating apparatus |
| CN1792858A (en) * | 2005-12-30 | 2006-06-28 | 宜宾丝丽雅股份有限公司 | Process for treating acidic waste water of viscose fibre industry |
| CN1872742A (en) * | 2006-06-22 | 2006-12-06 | 葫芦岛北方膜技术工业有限公司 | Technical methd for treating mine wastewater by using membrane technology |
| JP2009279478A (en) * | 2008-05-20 | 2009-12-03 | Tokyo Electric Power Co Inc:The | Removal method and device for dissolved hydrogen sulfide in water |
| CN101496993A (en) * | 2009-01-07 | 2009-08-05 | 上海水天环保科技有限公司 | Method and device for processing malodorous gas by active bamboo charcoal-H2O2 complex phase catalytic oxidation |
| CN105585146A (en) * | 2014-10-23 | 2016-05-18 | 青岛百键城环保科技有限公司 | A process of treating mine wastewater through applying a membrane technique |
| CN106310890A (en) * | 2015-06-17 | 2017-01-11 | 中国石油化工股份有限公司 | Method for removing acidic gases through biological technology |
| CN105110575A (en) * | 2015-09-28 | 2015-12-02 | 天津市环境保护科学研究院 | Viscose industry waste water treating method and device |
| CN206214979U (en) * | 2016-08-03 | 2017-06-06 | 石家庄市滕泰环保设备有限公司 | A kind of vacuum desorption system of carbon disulfide |
| CN206499999U (en) * | 2016-08-03 | 2017-09-19 | 石家庄市滕泰环保设备有限公司 | A kind of tandem adsorption system of carbon disulfide |
| CN205995270U (en) * | 2016-08-25 | 2017-03-08 | 北京实力伟业环保科技有限公司 | A kind of modularity biological tower processing viscose rayon industry Carbon bisulfide and hydrogen sulfide |
Non-Patent Citations (2)
| Title |
|---|
| 周玉瑄等: "《粘胶纤维生产基本知识》", 30 September 1982, 纺织工业出版社 * |
| 钱达中: "《发电厂水处理工程》", 31 May 1998, 中国电力出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108751328B (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jinisha et al. | Removal of rhodamine B dye from aqueous solution by electro-Fenton process using iron-doped mesoporous silica as a heterogeneous catalyst | |
| Liu et al. | Selective removal of H2S from biogas using a regenerable hybrid TiO2/zeolite composite | |
| Reza et al. | Photocatalytic degradation of methylene blue by magnetite+ H2O2+ UV process | |
| Yasin et al. | Adsorption of methylene blue onto treated activated carbon | |
| CN104609618B (en) | The treatment process of Disperse Blue-56 mother-liquor waste water | |
| Kulkarni et al. | Flyash adsorption studies for organic matter removal accompanying increase in dissolved oxygen | |
| Dong et al. | Physicochemical and porosity characteristics of thermally regenerated activated carbon polluted with biological activated carbon process | |
| CN106311191B (en) | A kind of preparation method of composite adsorbing material | |
| EP4166509A1 (en) | Method for efficiently removing bisphenol pollutants from water body and compound biochar material | |
| CN103551204B (en) | Multi-stage hierarchical pore structural Fenton-like catalyst and application thereof | |
| KR100269723B1 (en) | Process for preparing functional activated carbon fibers treated by anodic oxidation | |
| Wu et al. | Removal of ammonia nitrogen and phenol by pulsed discharge plasma combined with modified zeolite catalyst | |
| Kulkarni et al. | A review on hydrogen sulphide removal from waste gases | |
| CN110115974B (en) | Decolorizing material, preparation method and application thereof, and wastewater decolorizing method | |
| CN112079474A (en) | Sewage treatment process for sludge reduction | |
| CN107973461A (en) | A kind of UV/Na of 4- bromines phenol2SO3Photo-reduction biodegrading process | |
| CN108751328A (en) | A kind of deodorizing method of acid water in viscose rayon industry | |
| CN109607663B (en) | Titanium oxygen cluster C34H62O13S2Ti3Active carbon composite material, preparation method and application | |
| TWI613150B (en) | Method of manufacturing rice husk activated carbon and method of reactivating the same | |
| CN105363418A (en) | Carbon nano tube-nano silver-polyaluminium chloride-chitosan composite material | |
| CN204325003U (en) | A kind of ammonia nitrogen waste water treatment system | |
| CN107601737A (en) | A kind of method that matrix auxiliary UV photocatalysis removes mercury in organic sewage | |
| CN205700076U (en) | A kind of low concentration sulfuration waste gas combination type purifier | |
| Giri et al. | Water matrix effect on UV photodegradation of perfluorooctanoic acid | |
| JPS6036835B2 (en) | How to purify human waste water |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |