CN113800605A - 一种基于光电催化生成自由基处理养殖海水尾水的方法 - Google Patents
一种基于光电催化生成自由基处理养殖海水尾水的方法 Download PDFInfo
- Publication number
- CN113800605A CN113800605A CN202110968965.XA CN202110968965A CN113800605A CN 113800605 A CN113800605 A CN 113800605A CN 202110968965 A CN202110968965 A CN 202110968965A CN 113800605 A CN113800605 A CN 113800605A
- Authority
- CN
- China
- Prior art keywords
- photoelectrocatalysis
- electrode
- generation
- tio
- tail water
- 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 31
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000013535 sea water Substances 0.000 title claims abstract description 20
- 238000009360 aquaculture Methods 0.000 title claims abstract description 18
- 244000144974 aquaculture Species 0.000 title claims abstract description 18
- 150000003254 radicals Chemical class 0.000 claims abstract description 18
- 239000000460 chlorine Substances 0.000 claims abstract description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 239000001301 oxygen Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 239000002071 nanotube Substances 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910019891 RuCl3 Inorganic materials 0.000 claims description 5
- 229910021626 Tin(II) chloride Inorganic materials 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical group O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 4
- 229920001661 Chitosan Polymers 0.000 claims description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000007832 Na2SO4 Substances 0.000 claims description 3
- RTCRZVSCJGBPQG-UHFFFAOYSA-N O(CC)[SiH](O[SiH2]O[SiH3])CCCN Chemical compound O(CC)[SiH](O[SiH2]O[SiH3])CCCN RTCRZVSCJGBPQG-UHFFFAOYSA-N 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 claims description 3
- 238000010000 carbonizing Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- JLFNLZLINWHATN-UHFFFAOYSA-N pentaethylene glycol Chemical compound OCCOCCOCCOCCOCCO JLFNLZLINWHATN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 229960002635 potassium citrate Drugs 0.000 claims description 3
- 239000001508 potassium citrate Substances 0.000 claims description 3
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 3
- 235000011082 potassium citrates Nutrition 0.000 claims description 3
- 238000000197 pyrolysis Methods 0.000 claims description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- HTXDPTMKBJXEOW-UHFFFAOYSA-N iridium(IV) oxide Inorganic materials O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000003242 anti bacterial agent Substances 0.000 abstract description 7
- 229940088710 antibiotic agent Drugs 0.000 abstract description 7
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 abstract description 7
- 241000894006 Bacteria Species 0.000 abstract description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003197 catalytic effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 abstract description 3
- 241000195493 Cryptophyta Species 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- WGKMWBIFNQLOKM-UHFFFAOYSA-N [O].[Cl] Chemical compound [O].[Cl] WGKMWBIFNQLOKM-UHFFFAOYSA-N 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 abstract 1
- 238000009364 mariculture Methods 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- -1 ClO radicals Chemical class 0.000 description 1
- 102000018997 Growth Hormone Human genes 0.000 description 1
- 108010051696 Growth Hormone Proteins 0.000 description 1
- 239000004100 Oxytetracycline Substances 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000000122 growth hormone Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229960000625 oxytetracycline Drugs 0.000 description 1
- IWVCMVBTMGNXQD-PXOLEDIWSA-N oxytetracycline Chemical compound C1=CC=C2[C@](O)(C)[C@H]3[C@H](O)[C@H]4[C@H](N(C)C)C(O)=C(C(N)=O)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O IWVCMVBTMGNXQD-PXOLEDIWSA-N 0.000 description 1
- 235000019366 oxytetracycline Nutrition 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- IWVCMVBTMGNXQD-UHFFFAOYSA-N terramycin dehydrate Natural products C1=CC=C2C(O)(C)C3C(O)C4C(N(C)C)C(O)=C(C(N)=O)C(=O)C4(O)C(O)=C3C(=O)C2=C1O IWVCMVBTMGNXQD-UHFFFAOYSA-N 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
- C02F1/4674—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation with halogen or compound of halogens, e.g. chlorine, bromine
-
- 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
- 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
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
- C02F2001/46138—Electrodes comprising a substrate and a coating
- C02F2001/46142—Catalytic coating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- 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
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Abstract
本发明公开了一种基于光电催化生成自由基处理养殖海水尾水的方法,包括以下步骤:首先制备光电催化生成活性氯的电极和空气阴极;其次将制备得到的光电催化生成活性氯的电极作为光阳极,在制备得到的空气阴极表面覆盖一层铜网,外加1.1~5.0V电压,即可实现海水处理。在自然光照辅助下,施加一定偏压,光阳极发生光电催化反应产Cl2,随后生成HClO,HClO可以对藻类和细菌起到杀灭作用;阴极发生氧还原反应生成H2O2,H2O2在铜的催化作用下形成OH·,OH·可以直接氧化去除抗生素和有机质;同时,HClO同OH·发生反应生成氯氧自由基ClO·,氧化去除水体中的氨氮和抗生素,从而实现多种污染物的同时去除。
Description
技术领域
本发明涉及水处理技术领域,特别涉及一种基于光电催化生成自由基处理养殖海水尾水的方法。
背景技术
随着海水养殖技术水平的提高和市场需求的扩大,近年来我国海水工厂化养殖规模急剧扩张,由此导致海洋生态环境问题逐渐引起人们的广泛关注。海水养殖生产过程中,为了促进水产品的生长,常需要投加大量饵料和生长激素等。因此,养殖海水尾水,常含有大量有机质以及氨氮等。实际上近年来,海水养殖废水排海总量已超过陆游污水排放,并引发近海岸带水体富营养化,带来赤潮等海洋生态环境问题。同时在养殖过程中,常需要投加大量抗生素以防治病害发生,抗生素的滥用,会引发抗性细菌的生成以及扩散,近海岸带的杀人菌,实际上就是一种抗性细菌,同海水养殖业抗生素滥用有着直接的关系。
海水养殖废水具有盐度高、成份复杂和水量大等特点,传统水处理工艺,主要针对低盐度污水开发,对高盐度废水的处理效果不理想,且处理成本过高。现有技术一般采用药剂处理,存在处理效果不理想和易产生二次污染等问题。
发明内容
本发明为了解决上述技术问题,提供了一种基于光电催化生成自由基处理养殖海水尾水的方法。
本发明是通过以下技术方案得以实现的。
一种基于光电催化生成自由基处理养殖海水尾水的方法,包括以下步骤:
S1.制备光电催化生成活性氯的电极;
S2.制备空气阴极;
S3.将步骤S1制备得到的光电催化生成活性氯的电极作为阳极,在步骤S2制备得到的空气阴极表面覆盖一层铜网,外加1.1~5.0V电压,即可实现海水处理。
进一步的,步骤S1中,所述光电催化生成活性氯的电极为TiO2纳米管阵列负载的电极;所述TiO2纳米管阵列负载的电极为RuO2、IrO2和RuO2-SnO2中的一种或多种负载于TiO2纳米管上所形成的电极。
进一步的,所述TiO2纳米管阵列负载的电极为RuO2-SnO2/TiO2-NTs电极。
进一步的,所述RuO2-SnO2/TiO2-NTs电极的制备方法如下:
a.将Ti片置于18wt%HCl溶液中,在85℃条件下蚀刻10min;将处理过的Ti片作为阳极,铂片作为对电极,以0.8wt%NH4F,2wt%Na2SO4,10wt%PEG400的水溶液作为电解质溶液,电极间距为l cm,恒电位20V阳极氧化处理4h,在Ti基底上面形成TiO2纳米管,清洗、晾干,置于氧气氛中进行热处理;
b.将SnCl2·2H2O和RuCl3溶于含有10v%HCl的乙醇溶液中,SnCl2·2H2O和RuCl3的质量比为1:0.05;搅拌至澄清后再加入0.5wt%的乙氧基氨丙基三硅氧烷,混合均匀后得到溶胶;
c.将步骤S1制得的TiO2纳米管电极垂直浸没入步骤S2制得的溶胶溶液中,抽真空,负压下静置5min,烘干,然后在500℃下热解处理15min;再在500℃下焙烧1h,制得RuO2-SnO2/TiO2-NTs电极。
进一步的,步骤S2中,所述空气阴极为生成H2O2的电极;所述生成H2O2的电极为Fe、Co、Ni、N、S和P元素单一或者共同掺杂的活性炭。
进一步的,所述生成H2O2的电极为氮掺杂活性炭。
进一步的,所述氮掺杂活性炭的制备方法如下:将壳聚糖和柠檬酸钾按照1:1的质量比例混合,在800℃碳化处理2h,水洗、干燥;将干燥后的产物按照质量比为8:1:1的比例同PVDF和导电炭黑混合,加入氮甲基吡咯烷酮作为溶剂,搅拌成为膏状并涂抹于不锈钢或者导电碳布上,干燥后即可得到氮掺杂活性炭。
本申请根据海水养殖废水含盐量高的特点,将光阳极和空气阴极组合成器件,其中光阳极可以接受自然光照射,空气阴极在溶液一侧覆盖一层铜网作为催化H2O2生成OH·自由基的催化层,并外加一定偏压,利用光电化学生成次氯酸和双氧水,并通过催化反应生成OH·和ClO·自由基,即可实现养殖海水的处理。其中所涉及的化学反应为
阳极:Cl-+H2O–2e→HClO+H+
阴极:O2+2H2O+2e→2H2O2
H2O2+铜网→OH·
溶液中的反应HClO+OH·→ClO·+H2O
本申请具有以下有益效果。
1)本申请处理方法能够产生OH·和ClO·自由基,二者具有强氧化性作用,能够氧化降解抗生素和氨氮废水,同时利用生成的次氯酸杀灭藻类和细菌等,实现多种污染物的同步去除,无需外加药剂,克服现有技术易于产生二次污染、处理效果差等缺点;
2)本申请将铜网与空气阴极相连接,处于负电压状态,不会发生溶解;
3)本申请处理方法同时利用自然光和外加电源为驱动力,降低了能耗,而且在没有光照或者光照不佳的条件下也能工作,适应性更强。
附图说明
图1是本发明水处理方法的原理图。
具体实施方式
实施例1
一种基于光电催化生成自由基处理养殖海水尾水的方法,包括步骤如下:
1)制备光电催化产活性氯电极
a.将1mm厚的Ti片依次用砂纸打磨、超声清洗处理后,在18wt%HCl中85℃蚀刻10min;然后在室温下,以预处理过的Ti片作为阳极,铂片作为对电极,以0.8wt%NH4F,2wt%Na2SO4,10wt%PEG400的水溶液作为电解质溶液,电极间距l cm;磁力搅拌下,恒电位20V阳极氧化处理4h,在Ti基底上面形成TiO2纳米管;样品用二次蒸馏水清洗干净后氮气中晾干,然后置于管式炉中氧气氛中进行热处理;
b.将10g SnCl2·2H2O和0.5g RuCl3溶于含有10mL HCl的100mL乙醇溶液中,磁力搅拌至澄清,最后加入0.5wt%的乙氧基氨丙基三硅氧烷表面活性剂搅拌均匀,得到透明溶胶;
c.将TiO2纳米管电极垂直浸没入上述溶胶溶液中,抽真空,负压下静置5min,之后取出在100℃下烘干,500℃下热解处理15min;重复几次后,最后在500℃下焙烧1h,制得RuO2-SnO2/TiO2-NTs电极;
2)制备电催化生成H2O2的空气阴极
将2g壳聚糖和2g柠檬酸钾混合均匀,在800℃碳化处理2h,用水洗涤至中性后,真空干燥,然后按照质量比8:1:1同PVDF和导电炭黑混合,加入适量的氮甲基吡咯烷酮作为溶剂,搅拌成为膏状,然后涂抹在导电碳布上,真空干燥后即可得到空气阴极;
3)将光阳极和空气阴极组装成器件,如图1所示,器件的容量为1.5L,光阳极可以接受自然光照射,空气阴极表面覆盖一层金属铜网,外加2.0V的直流电压,以批处理模式处理养殖尾水2h。处理效果参见表1。
表1
土霉素 | 氨氮 | COD | |
未处理 | 54.6mg/L | 235mg/L | 1156mg/L |
处理后 | 0.85mg/L | 8.7mg/L | 15mg/L |
从表1可以看出,本申请处理方法可以有效处理养殖尾水中的抗生素、氨氮和有机质;另外,本申请处理方法所用能耗为1.5kWh/吨,按照工业电费1元/kWh计算,处理吨水的费用仅为1.5元,远低于其他处理方法的能耗。
本具体实施方式的实施例均为本发明的较佳实施例,并非依此限制本发明的保护范围,故:凡依本发明的结构、形状、原理所做的等效变化,均应涵盖于本发明的保护范围之内。
Claims (7)
1.一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:包括以下步骤:
S1.制备光电催化生成活性氯的电极;
S2.制备空气阴极;
S3.将步骤S1制备得到的光电催化生成活性氯的电极作为阳极,在步骤S2制备得到的空气阴极表面覆盖一层铜网,外加1.1~5.0V电压,即可实现海水处理。
2.根据权利要求1所述的一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:步骤S1中,所述光电催化生成活性氯的电极为TiO2纳米管阵列负载的电极;所述TiO2纳米管阵列负载的电极为RuO2、IrO2和RuO2-SnO2中的一种或多种负载于TiO2纳米管上所形成的电极。
3.根据权利要求2所述的一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:所述TiO2纳米管阵列负载的电极为RuO2-SnO2/TiO2-NTs电极。
4.根据权利要求3所述的一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:所述RuO2-SnO2/TiO2-NTs电极的制备方法如下:
a.将Ti片置于18wt%HCl溶液中,在85℃条件下蚀刻10min;将处理过的Ti片作为阳极,铂片作为对电极,以0.8wt%NH4F,2wt%Na2SO4,10wt%PEG400的水溶液作为电解质溶液,电极间距为l cm,恒电位20V阳极氧化处理4h,在Ti基底上面形成TiO2纳米管,清洗、晾干,置于氧气氛中进行热处理;
b.将SnCl2·2H2O和RuCl3溶于含有10v%HCl的乙醇溶液中,SnCl2·2H2O和RuCl3的质量比为1:0.05;搅拌至澄清后再加入0.5wt%的乙氧基氨丙基三硅氧烷,混合均匀后得到溶胶;
c.将步骤S1制得的TiO2纳米管电极垂直浸没入步骤S2制得的溶胶溶液中,抽真空,负压下静置5min,烘干,然后在500℃下热解处理15min;再在500℃下焙烧1h,制得RuO2-SnO2/TiO2-NTs电极。
5.根据权利要求1所述的一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:步骤S2中,所述空气阴极为生成H2O2的电极;所述生成H2O2的电极为Fe、Co、Ni、N、S和P元素单一或者共同掺杂的活性炭。
6.根据权利要求5所述的一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:所述生成H2O2的电极为氮掺杂活性炭。
7.根据权利要求6所述的一种基于光电催化生成自由基处理养殖海水尾水的方法,其特征在于:所述氮掺杂活性炭的制备方法如下:将壳聚糖和柠檬酸钾按照1:1的质量比例混合,在800℃碳化处理2h,水洗、干燥;将干燥后的产物按照质量比为8:1:1的比例同PVDF和导电炭黑混合,加入氮甲基吡咯烷酮作为溶剂,搅拌成为膏状并涂抹于不锈钢或者导电碳布上,干燥后即可得到氮掺杂活性炭。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110968965.XA CN113800605B (zh) | 2021-08-23 | 2021-08-23 | 一种基于光电催化生成自由基处理养殖海水尾水的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110968965.XA CN113800605B (zh) | 2021-08-23 | 2021-08-23 | 一种基于光电催化生成自由基处理养殖海水尾水的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN113800605A true CN113800605A (zh) | 2021-12-17 |
CN113800605B CN113800605B (zh) | 2024-01-12 |
Family
ID=78893881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202110968965.XA Active CN113800605B (zh) | 2021-08-23 | 2021-08-23 | 一种基于光电催化生成自由基处理养殖海水尾水的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN113800605B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114667994A (zh) * | 2022-03-21 | 2022-06-28 | 连玉兰 | 一种纳米催化自由基杀灭海水蚂蟥的方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102766882A (zh) * | 2012-08-10 | 2012-11-07 | 华南理工大学 | 一种三维结构的析氯dsa电催化电极的制备方法 |
CN105384224A (zh) * | 2015-12-21 | 2016-03-09 | 湖北大学 | 一种利用电催化还原空气氧生成的微活性氧降解有机废水的方法及装置 |
CN106917128A (zh) * | 2017-03-10 | 2017-07-04 | 北京工业大学 | 一种锡‑钼共掺杂二氧化钛纳米管阵列电极及制备方法 |
CN109160594A (zh) * | 2018-07-24 | 2019-01-08 | 华中科技大学 | 阳极负载光催化材料微生物燃料电池及其制备方法与应用 |
CN110078195A (zh) * | 2019-04-24 | 2019-08-02 | 上海交通大学 | 基于光电催化生成氯氧自由基的氨氮废水降解系统及方法 |
CN110354851A (zh) * | 2019-06-12 | 2019-10-22 | 西安交通大学 | 一种纳米管状氧化钛-氧化锡-氧化钌复合涂层催化降解有机污染物的方法 |
CN111233224A (zh) * | 2019-12-30 | 2020-06-05 | 南开大学 | 一种同时去除海产养殖废水中氮磷、抗生素和杀菌的处理方法 |
-
2021
- 2021-08-23 CN CN202110968965.XA patent/CN113800605B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102766882A (zh) * | 2012-08-10 | 2012-11-07 | 华南理工大学 | 一种三维结构的析氯dsa电催化电极的制备方法 |
CN105384224A (zh) * | 2015-12-21 | 2016-03-09 | 湖北大学 | 一种利用电催化还原空气氧生成的微活性氧降解有机废水的方法及装置 |
CN106917128A (zh) * | 2017-03-10 | 2017-07-04 | 北京工业大学 | 一种锡‑钼共掺杂二氧化钛纳米管阵列电极及制备方法 |
CN109160594A (zh) * | 2018-07-24 | 2019-01-08 | 华中科技大学 | 阳极负载光催化材料微生物燃料电池及其制备方法与应用 |
CN110078195A (zh) * | 2019-04-24 | 2019-08-02 | 上海交通大学 | 基于光电催化生成氯氧自由基的氨氮废水降解系统及方法 |
CN110354851A (zh) * | 2019-06-12 | 2019-10-22 | 西安交通大学 | 一种纳米管状氧化钛-氧化锡-氧化钌复合涂层催化降解有机污染物的方法 |
CN111233224A (zh) * | 2019-12-30 | 2020-06-05 | 南开大学 | 一种同时去除海产养殖废水中氮磷、抗生素和杀菌的处理方法 |
Non-Patent Citations (1)
Title |
---|
MARTA SEVILLA AND ANTONIO B. FUERTES: "A general and facile synthesis strategy towards highly porous carbons: carbonization of organic salts", 《JOURNAL OF MATERIALS CHEMISTRY A》 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114667994A (zh) * | 2022-03-21 | 2022-06-28 | 连玉兰 | 一种纳米催化自由基杀灭海水蚂蟥的方法 |
Also Published As
Publication number | Publication date |
---|---|
CN113800605B (zh) | 2024-01-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111041521B (zh) | 用于还原水中硝态氮的负载铜镍的TiO2纳米管阵列电极 | |
CN108585125B (zh) | 还原水中硝态氮的碳基铜镍复合电极、制备方法及其应用 | |
CN107445244B (zh) | 光电催化-氯自由基脱氮方法 | |
CN110980895B (zh) | 一种从水中电吸附并降解去除抗生素的方法及装置 | |
Khan et al. | Magnesium ferrite spinels as anode modifier for the treatment of Congo red and energy recovery in a single chambered microbial fuel cell | |
CN102211830B (zh) | 电催化氧化处理切削液废水的方法 | |
CN101574656A (zh) | 纳米级钴离子掺杂二氧化钛催化剂及其制备方法 | |
CN105665024B (zh) | 一种去除水体硝酸盐的双金属催化剂Pd@Cu-BTC的制备方法及其应用 | |
CN109694119A (zh) | 一种利用改性活性炭粒子电极处理脱硫废水的方法 | |
CN110354851A (zh) | 一种纳米管状氧化钛-氧化锡-氧化钌复合涂层催化降解有机污染物的方法 | |
CN113800605B (zh) | 一种基于光电催化生成自由基处理养殖海水尾水的方法 | |
CN104909437B (zh) | 一种Ti纳米电极高效去除水体中硝酸盐的方法 | |
CN109553160B (zh) | 一种原位合成球形二氧化锡载铂电催化剂的制备方法及其应用 | |
KR100553364B1 (ko) | 금속 혼합 산화물 전극 및 그의 제조방법 | |
CN111792706A (zh) | 有阳离子交换膜的电化学氧化处理反应器及用于处理吡啶废水的方法 | |
CN115215410B (zh) | 氧化铈改性碳纳米管膜活化次氯酸钠同步去除抗生素和抗性基因的方法 | |
CN113845208B (zh) | 一种光电微生物耦合脱氮除碳系统 | |
CN114011409B (zh) | 一种铜单原子催化剂及其制备方法和应用、铜单原子催化剂催化降解废水中四环素的方法 | |
CN110526484B (zh) | 一种有机磷农药工业废水处理工艺 | |
CN110304734B (zh) | 一种利用菌藻-催化电极强化无机氮去除的养殖尾水处理新方法 | |
CN111807477B (zh) | 一种基于太阳能发热膜电解去除抗生素抗性基因的方法 | |
CN114426320A (zh) | 一种FeOCl/氮磷自掺生物炭阴极的制备方法及其污水处理中的应用 | |
CN106082420A (zh) | 一种产电微生物阳极辅助异质结阳极的自偏压污染控制系统 | |
CN114044554A (zh) | 光电协同强化铁基催化剂活化过硫酸盐降解抗生素的方法 | |
CN108264134B (zh) | 一种高盐高cod废水电解电极及电解氧化处理方法 |
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 |