CN110302798A - A kind of ozone oxidation organic wastewater catalyst - Google Patents
A kind of ozone oxidation organic wastewater catalyst Download PDFInfo
- Publication number
- CN110302798A CN110302798A CN201910652813.1A CN201910652813A CN110302798A CN 110302798 A CN110302798 A CN 110302798A CN 201910652813 A CN201910652813 A CN 201910652813A CN 110302798 A CN110302798 A CN 110302798A
- Authority
- CN
- China
- Prior art keywords
- ozone oxidation
- organic wastewater
- oxidation organic
- sulfuric acid
- molysite
- 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.)
- Withdrawn
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000002351 wastewater Substances 0.000 title claims abstract description 28
- 230000003647 oxidation Effects 0.000 title claims abstract description 26
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 26
- 239000003054 catalyst Substances 0.000 title claims abstract description 24
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 11
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims abstract description 7
- 229910000348 titanium sulfate Inorganic materials 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000008247 solid mixture Substances 0.000 claims abstract description 6
- 238000013019 agitation Methods 0.000 claims abstract description 5
- 150000002696 manganese Chemical class 0.000 claims abstract description 5
- 239000012065 filter cake Substances 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims abstract description 3
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 6
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 3
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 3
- CJGYQECZUAUFSN-UHFFFAOYSA-N oxygen(2-);tin(2+) Chemical compound [O-2].[Sn+2] CJGYQECZUAUFSN-UHFFFAOYSA-N 0.000 claims description 3
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(II) oxide Inorganic materials [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 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 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000005416 organic matter Substances 0.000 description 4
- -1 Hydroxyl radical free radical Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229940099596 manganese sulfate Drugs 0.000 description 2
- 235000007079 manganese sulphate Nutrition 0.000 description 2
- 239000011702 manganese sulphate Substances 0.000 description 2
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000000877 Sex Attractant Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
-
- 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
- C02F2101/30—Organic compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of ozone oxidation organic wastewater catalyst, it is prepared by the following method to obtain: the raw material that will be made of diatomite, molysite, manganese salt and titanium sulfate, moisture is added than 2 ~ 5:1 by water and material quality, and the concentrated sulfuric acid is added than 0.1 ~ 0.2:1 by the concentrated sulfuric acid and material quality, under agitation, at least for 24 hours in 40 ~ 95oC reaction, liquid-solid mixture after must reacting；Liquid-solid mixture is separated after the reaction, and filter cake is granulated as the particle of 1 ~ 10mm of diameter, is placed between 700 ~ 900oC and is roasted 2 ~ 6h, obtains ozone oxidation organic wastewater catalyst.The present invention has following the utility model has the advantages that the dependency degree of pH when (1) reduces ozone oxidation organic wastewater；(2) efficiency of ozone oxidation is improved；(3) molysite loaded is very firm, not easily to fall off.
Description
Technical field
The invention belongs to catalyst fields, and in particular to a kind of ozone oxidation organic wastewater catalyst.
Background technique
Ozone has many advantages, such as that treatment effeciency is high, oxidation is thorough, without secondary pollution in terms of water process, application it is existing compared with
Long history.For example, ozone can effectively kill sex pheromone as disinfectant, and can avoid using in Water purification field
Generated chloro disinfection by-products when disinfection by chlorine has formed mature ozonization technique.For another example, it is led in sewage treatment
Domain using the oxidability of ozone itself, the functional group of oxidized portion organic matter, or part long-chain macromolecule organic matter is divided
Solution is at short chain small organic molecule, to improve the biodegradable of organic matter.But, smelly for more stable organic matter
Oxygen is likely to be unable to direct oxidation, at this point, can generally be decomposited under alkaline condition using ozone has very high oxidation potential
Hydroxyl radical free radical characteristic, the pH of waste water is turned up to 9 ~ 10 and is handled.
Under the premise of no free radical buries in oblivion agent, can hydroxyl radical free radical be taken using the highly difficult organic wastewater of ozone treatment
Obtain the key factor of promising result.For the formation efficiency for further increasing hydroxyl radical free radical, rising in recent years is largely about smelly
The research of oxygen catalysis oxidation, and make great progress.The addition of catalyst is no longer tend to the condition of ozone oxidation sternly
Lattice, and it can accelerate ozone decomposition, greatly improve the utilization rate of ozone, so that the cost of wastewater treatment be made to obtain substance
It reduces.Existing research at present shows that the oxide of iron and oxyhydroxide have preferably catalytic action to ozone.
A kind of catalyst specifically for ozone oxidation treatment of Organic Wastewater is studied to be of great significance.
Summary of the invention
The object of the present invention is to provide a kind of ozone oxidation organic wastewater catalyst.
The purpose of the present invention is what is realized in the following way:
A kind of ozone oxidation organic wastewater catalyst, which is characterized in that be prepared by the following method to obtain:
(1) prepare raw material: raw material is diatomite, molysite, manganese salt and titanium sulfate, and parts by weight are 70 ~ 80 parts of diatomite, molysite 10
~ 15 parts, 10 ~ 15 parts of manganese salt, 1-5 parts of titanium sulfate；The diatomite is the diatomite of 80-120 mesh after sieving removal of impurities；
(2) immersion treatment: by the raw material, moisture is added than 2 ~ 5:1 by water and material quality, and press the concentrated sulfuric acid and material quality
The concentrated sulfuric acid is added than 0.1 ~ 0.2:1, under agitation, at least for 24 hours in 40 ~ 95oC reaction, liquid-solid mixture after must reacting；
(3) calcination process: liquid-solid mixture after the reaction is separated, and filter cake is granulated as the particle of 1 ~ 10mm of diameter,
It is placed between 700 ~ 900oC and roasts 2 ~ 6h, obtain ozone oxidation organic wastewater catalyst.
Preferred embodiment, the molysite are one of ferric sulfate, ferric nitrate or their combination.
Preferred embodiment, the molysite are one of manganese sulfate, manganese nitrate or their combination.
The industrial concentrated sulfuric acid that the concentrated sulfuric acid is 98%.
Preferred embodiment, the concentrated sulfuric acid react -48h for 24 hours in 85oC ~ 95oC for step (2).
Preferred embodiment can also include stannous oxide 1-5 parts in the raw material.Further increase ozone oxidation efficiency.
The present invention has following the utility model has the advantages that the dependency degree of pH when (1) reduces ozone oxidation organic wastewater；(2) it mentions
The efficiency of high ozone oxidation；(3) catalyst is very firm, and loaded article is not easily to fall off, excellent catalytic effect.
Specific embodiment
Below with reference to embodiment, the invention will be further described.
Embodiment 1 takes diatomite 800g, ferric sulfate 100g, manganese sulfate 90g, titanium sulfate 10g between 80 ~ 120 mesh in mass ratio
After mixing, 2Kg water is added, the sulfuric acid of 100g 98% then uses vacuum filtration side under agitation for 24 hours in 95oC reaction
Formula carries out solid-liquor separation.Mud cake is granulated, partial size differs between 1 ~ 10mm, after in 700oC roast 5h, obtain catalysis of the invention
Agent.
Take this catalyst about 100g, investment fills in the special instrument of 1L waste water (COD=2000mg/L), be passed through ozone into
Row processing.Specific processing parameter setting are as follows: wastewater pH=9 or so, ozone concentration 120mg/L, ozone flow velocity 1L/min, when reaction
Between 1h.Wastewater Determination COD is taken after the completion of processing, is reduced to 238mg/L.In contrast, it under the conditions of same processing parameter, is added without
The catalyst of embodiment 1, waste water COD are only down to 914mg/L.
Embodiment 2 takes diatomite 700g between 80 ~ 120 mesh, ferric nitrate 200g, manganese nitrate 80g, titanium sulfate in mass ratio
After 10g, stannous oxide 10g mixing, 2.5Kg water is added, the sulfuric acid of 150g 98% reacts 30h in 90oC under agitation, with
Solid-liquor separation is carried out using vacuum filtration mode afterwards.Mud cake is granulated, partial size differs between 1 ~ 10mm, after in 800oC roast 5h,
Obtain catalyst of the invention.
Take this catalyst about 100g, investment fills in the special instrument of 1L waste water (COD=2000mg/L), be passed through ozone into
Row processing.Specific processing parameter setting are as follows: wastewater pH=9 or so, ozone concentration 120mg/L, ozone flow velocity 1L/min, when reaction
Between 1h.Wastewater Determination COD is taken after the completion of processing, is reduced to 201mg/L.In contrast, it under the conditions of same processing parameter, is added without
The catalyst of embodiment 2, waste water COD are only down to 934mg/L.
Claims (6)
1. a kind of ozone oxidation organic wastewater catalyst, which is characterized in that be prepared by the following method to obtain:
(1) prepare raw material: raw material is diatomite, molysite, manganese salt and titanium sulfate, and weight ratio is 70 ~ 80 parts of diatomite, molysite
10 ~ 15 parts, 10 ~ 15 parts of manganese salt, 1-5 parts of titanium sulfate；The diatomite is the diatomite of 80-120 mesh after sieving removal of impurities；
(2) immersion treatment: by the raw material, moisture is added than 2 ~ 5:1 by water and material quality, and press the concentrated sulfuric acid and material quality
The concentrated sulfuric acid is added than 0.1 ~ 0.2:1, under agitation, at least for 24 hours in 40oC ~ 95oC reaction, liquid-solid mixture after must reacting；
(3) calcination process: liquid-solid mixture after the reaction is separated, and filter cake is granulated as the particle of 1 ~ 10mm of diameter,
It is placed between 700oC ~ 900oC and roasts 2 ~ 6h, obtain ozone oxidation organic wastewater catalyst.
2. a kind of preparation method of ozone oxidation organic wastewater catalyst according to claim 1, it is characterised in that: described
Molysite be one of ferric sulfate, ferric nitrate or their combination.
3. a kind of ozone oxidation organic wastewater catalyst according to claim 1, it is characterised in that: the molysite is sulphur
One of sour manganese, manganese nitrate or their combination.
4. a kind of ozone oxidation organic wastewater catalyst according to claim 1, it is characterised in that: the concentrated sulfuric acid is
The 98% industrial concentrated sulfuric acid.
5. a kind of ozone oxidation organic wastewater catalyst described in one of -4 according to claim 1, it is characterised in that: the raw material
In can also include stannous oxide 1-5 parts.
6. a kind of ozone oxidation organic wastewater catalyst described in one of -4 according to claim 1, it is characterised in that: step (2)
- 48h for 24 hours is reacted in 85oC ~ 95oC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652813.1A CN110302798A (en) | 2019-07-19 | 2019-07-19 | A kind of ozone oxidation organic wastewater catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652813.1A CN110302798A (en) | 2019-07-19 | 2019-07-19 | A kind of ozone oxidation organic wastewater catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110302798A true CN110302798A (en) | 2019-10-08 |
Family
ID=68081427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910652813.1A Withdrawn CN110302798A (en) | 2019-07-19 | 2019-07-19 | A kind of ozone oxidation organic wastewater catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110302798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441134A (en) * | 2021-05-13 | 2021-09-28 | 重庆南科环工环保科技有限公司 | Preparation method and application of catalyst for organophosphorus pesticide production wastewater |
| CN116173976A (en) * | 2022-12-14 | 2023-05-30 | 佛山市诺蓝环保科技有限公司 | A kind of wastewater deep oxidation catalyst and preparation method thereof |
-
2019
- 2019-07-19 CN CN201910652813.1A patent/CN110302798A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441134A (en) * | 2021-05-13 | 2021-09-28 | 重庆南科环工环保科技有限公司 | Preparation method and application of catalyst for organophosphorus pesticide production wastewater |
| CN116173976A (en) * | 2022-12-14 | 2023-05-30 | 佛山市诺蓝环保科技有限公司 | A kind of wastewater deep oxidation catalyst and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0490317B1 (en) | Active carbon materials, process for the preparation thereof and the use thereof | |
| CN104355443B (en) | A kind for the treatment of process of the waste water containing unsymmetrical dimethyl hydrazine | |
| CN106110562B (en) | A kind of method for removing griseofulvin in biomedical waste residue | |
| CN101743203A (en) | The treatment method of arsenic trioxide | |
| WO2011032362A1 (en) | Catalyst for treating industry wastewater at ambient temperature and pressure and preparation method thereof | |
| CN113772802B (en) | Method for degrading bisphenol A in water by using manganese oxide modified copper-manganese spinel | |
| CN110302798A (en) | A kind of ozone oxidation organic wastewater catalyst | |
| CN113231055A (en) | Composite catalyst, method for degrading high molecular organic compound by synergistic electron beam irradiation of composite catalyst and application of composite catalyst in sewage treatment | |
| CN103755065B (en) | Method for reducing COD (Chemical Oxygen Demand) of tebuconazole industrial wastewater | |
| CN101428933A (en) | Biological agent cooperated hydrolyzation-blowing off treatment process for nickel-ammonia wastewater | |
| CN116986764A (en) | Method for chemical oxidation of ammonia nitrogen in wastewater into nitrogen | |
| CN109879505B (en) | Sodium hypochlorite-containing wastewater treatment process | |
| CN100418890C (en) | A method for preparing potassium ferrate by using iron and steel pickling waste liquid | |
| CN101391750A (en) | Method for preparing high-purity chlorine dioxide from starchy raw materials and its catalyst | |
| CN1535925A (en) | Preparation of ferrate multifunctional water treatment agent and decontamination technology | |
| CN109354083A (en) | A kind of preparation method of dephosphorization except the water purification agent of ammonia nitrogen | |
| JP4656848B2 (en) | Sludge treatment method | |
| CN105217863B (en) | A kind of handling process of disperse blue 60 production waste water | |
| CN105110378A (en) | Method used for preparing ferrate | |
| CN104529012A (en) | Method for processing nitrite nitrogen in waste water | |
| CN110396595B (en) | Efficient decomposition method of manganese dithionate in manganese ore sulfur dioxide leaching solution | |
| CN107902745A (en) | A kind of processing method of landfill leachate thick water | |
| CN104529822A (en) | Production technology for preparing citronellyl nitrile from citronellal | |
| CN110810435A (en) | Oxidation water purification disinfectant for aquaculture and preparation method thereof | |
| CN110526484A (en) | A kind of organophosphorus pesticide technique for treating industrial wastewater |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191008 |