CN112591980A - Harmless method for inorganic arsenic in seawater - Google Patents
Harmless method for inorganic arsenic in seawater Download PDFInfo
- Publication number
- CN112591980A CN112591980A CN202011296628.2A CN202011296628A CN112591980A CN 112591980 A CN112591980 A CN 112591980A CN 202011296628 A CN202011296628 A CN 202011296628A CN 112591980 A CN112591980 A CN 112591980A
- Authority
- CN
- China
- Prior art keywords
- seawater
- inorganic arsenic
- reaction tank
- biological treatment
- density
- 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.)
- Pending
Links
- 239000013535 sea water Substances 0.000 title claims abstract description 52
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 22
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 11
- 241001465754 Metazoa Species 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 241000195652 Auxenochlorella pyrenoidosa Species 0.000 claims description 10
- 235000007091 Chlorella pyrenoidosa Nutrition 0.000 claims description 10
- 241000196324 Embryophyta Species 0.000 claims description 7
- 241000196251 Ulva arasakii Species 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims 1
- 244000005700 microbiome Species 0.000 abstract description 6
- 230000000630 rising effect Effects 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 8
- 230000012010 growth Effects 0.000 description 6
- 241000238557 Decapoda Species 0.000 description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 2
- 230000005791 algae growth Effects 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to the technical field of seawater treatment, in particular to a harmless method for inorganic arsenic in seawater; it comprises coarse filtering natural seawater to remove macroscopic animals and plants; leading the mixture into a reaction tank for electrolytic treatment; leading the seawater into a biological treatment tank, and obtaining harmless seawater after biological treatment; wherein the microbubble is evenly blown in to reaction tank bottom, and the microbubble lasts the plate electrode of assaulting electrolysis usefulness to break away from dead and the microorganism corpse of adhesion on the plate electrode, reaction tank bottom evenly blows in the big bubble once every 1 minute, and big bubble is from up rising fast down, can absorb the microbubble on the plate electrode and come up in the lump on the way, avoids a large amount of microbubble adhesions to influence on the plate electrode and electrically conducts.
Description
Technical Field
The invention relates to the technical field of seawater treatment, in particular to a harmless method for inorganic arsenic in seawater.
Background
Inorganic arsenic in seawater is harmless mainly by an electrolytic method, and the specific principle is as follows: electrolyzing natural seawater to generate oxygen free radicals, hypochlorite and hydroxide radicals; the oxygen radicals and hypochlorite oxidize Fe (II), Mn (II), and As (III) to higher valence Fe (III), Mn (IV), and As (V); fe (III) and Mn (IV) to form hydroxide precipitates; the precipitate strongly adsorbs As (V) to form coprecipitation, and then the inorganic arsenic in the seawater can be removed by filtering.
The prior art has the following defects: 1) the natural seawater contains various animals, plants and microorganisms, and can die and adhere to a reaction tank and an electrode in electrolysis, so that the service life of electrolysis equipment is seriously influenced; 2) the hydroxide precipitation strongly adsorbs As (V) to form coprecipitation, but the proportion of each element in the natural seawater is not fixed, and most seawater in the sea area cannot completely reduce the inorganic arsenic concentration to a safe range even through electrolysis.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for prolonging the service life of electrolysis equipment and more thoroughly removing inorganic arsenic in seawater.
The technical scheme of the invention is as follows:
the harmless method of inorganic arsenic in seawater comprises the following steps:
firstly, coarsely filtering natural seawater to remove macroscopic animals and plants; simply speaking, the biological substances such as fishes, shrimps, crabs and the like are isolated by a tool such as a screen and the like, and are prevented from entering the next step;
step two, introducing the seawater treated in the step one into a reaction tank for electrolytic treatment;
step three, leading the seawater electrolyzed in the step two into a biological treatment tank, and obtaining harmless seawater after biological treatment;
wherein the microbubble is evenly blown in to reaction tank bottom, and the microbubble lasts the plate electrode of assaulting electrolysis usefulness to break away from dead and the microorganism corpse of adhesion on the plate electrode, reaction tank bottom evenly blows in the big bubble once every 1 minute, and big bubble is from up rising fast down, can absorb the microbubble on the plate electrode and come up in the lump on the way, avoids a large amount of microbubble adhesions to influence on the plate electrode and electrically conducts.
Further, the current density on the surface of the electrode plate was set to 30A/dm2～40A/dm2The microbubbles are bubbles with initial diameter less than 1 mm, the density of the microbubbles is more than 1000 microbubbles/L (at least 1000 microbubbles are contained in one liter of water), and the large bubbles are bubbles with initial diameter more than 10 cm; because the electrode plate is usually current-tightDegree greater than 30A/dm2A large amount of microbial corpses will adhere to the surface of the substrate, but since the method uses microbubbles for impact, the problem will not be worried about even if the current density is increased, and certainly, if the current density is continuously increased, the problem of energy waste will occur.
Further, the flow velocity in the reaction tank is 3-5 cubic meters per second, and the specific value of the flow velocity is randomly selected, and the current density of the local part of the water flow between the cathode and the anode of the electrode plate cannot be accurately determined in practice because the water flow is influenced by multiple factors such as velocity, salinity, microorganism content and bubble content. However, the electrodes are usually provided with a plurality of sets, which can be understood as a matrix, so that when seawater with unstable water velocity passes through the electrode matrix with fixed position, the current density is continuously fluctuated and the current density of each area in the matrix is different, so that the seawater is bombarded by more proper current density in the passing process, and a more complete electrolysis is completed in the electrode matrix. The control of the water flow is only realized to obtain more proper electrolytic current for most of the treated seawater without adopting expensive current density control equipment.
Further, chlorella pyrenoidosa is placed in the biological treatment tank with an initial density of 200 per ml and is removed once a month, such that the density is less than 300 per ml. Since the electrolyzed seawater is suitable for the growth of the chlorella pyrenoidosa, according to the common knowledge, if any seawater rapidly breeds to a certain density, the seawater will only have the function of division reproduction but not growth, and the seawater has little function of enriching inorganic arsenic.
Furthermore, the ulva lactuca is also placed in the biological treatment tank, the density is 20 plants per cubic meter, the ulva lactuca does not have the function of enriching inorganic arsenic, but the ulva lactuca and the chlorella pyrenoidosa can generate certain interspecific assistance, so that the chlorella pyrenoidosa is stimulated to accelerate growth.
Further, the flow rate of the biological treatment tank is controlled to be 1-2 cubic meters per second. Is suitable for algae growth at low flow rate.
The invention has the beneficial effects that: no chemical reagent is adopted, no pollution is caused, inorganic arsenic in seawater is effectively removed, a large amount of biological residues are not adhered to the electrode plate in the inorganic arsenic removing process, and the service life of the electrode plate is effectively prolonged.
Detailed Description
The following is further described in conjunction with the detailed description:
the harmless method of inorganic arsenic in seawater comprises the following steps:
firstly, coarsely filtering natural seawater to remove macroscopic animals and plants; simply speaking, the biological substances such as fishes, shrimps, crabs and the like are isolated by a tool such as a screen and the like, and are prevented from entering the next step;
step two, introducing the seawater treated in the step one into a reaction tank for electrolytic treatment;
step three, leading the seawater electrolyzed in the step two into a biological treatment tank, and obtaining harmless seawater after biological treatment;
wherein the microbubble is evenly blown in to reaction tank bottom, and the microbubble lasts the plate electrode of assaulting electrolysis usefulness to break away from dead and the microorganism corpse of adhesion on the plate electrode, reaction tank bottom evenly blows in the big bubble once every 1 minute, and big bubble is from up rising fast down, can absorb the microbubble on the plate electrode and come up in the lump on the way, avoids a large amount of microbubble adhesions to influence on the plate electrode and electrically conducts.
Further, the current density on the surface of the electrode plate was set to 30A/dm2～40A/dm2The microbubbles are bubbles with initial diameter less than 1 mm, the density of the microbubbles is more than 1000 microbubbles/L (at least 1000 microbubbles are contained in one liter of water), and the large bubbles are bubbles with initial diameter more than 10 cm; the current density of the electrode plate is usually more than 30A/dm2A large amount of microbial corpses will adhere to the surface of the substrate, but since the method uses microbubbles for impact, the problem will not be worried about even if the current density is increased, and certainly, if the current density is continuously increased, the problem of energy waste will occur.
Further, the flow velocity in the reaction tank is 3-5 cubic meters per second, and the specific value of the flow velocity is randomly selected, and the current density of the local part of the water flow between the cathode and the anode of the electrode plate cannot be accurately determined in practice because the water flow is influenced by multiple factors such as velocity, salinity, microorganism content and bubble content. However, the electrodes are usually provided with a plurality of sets, which can be understood as a matrix, so that when seawater with unstable water velocity passes through the electrode matrix with fixed position, the current density is continuously fluctuated and the current density of each area in the matrix is different, so that the seawater is bombarded by more proper current density in the passing process, and a more complete electrolysis is completed in the electrode matrix. The control of the water flow is only realized to obtain more proper electrolytic current for most of the treated seawater without adopting expensive current density control equipment.
Further, chlorella pyrenoidosa is placed in the biological treatment tank with an initial density of 200 per ml and is removed once a month, such that the density is less than 300 per ml. Since the electrolyzed seawater is suitable for the growth of the chlorella pyrenoidosa, according to the common knowledge, if any seawater rapidly breeds to a certain density, the seawater will only have the function of division reproduction but not growth, and the seawater has little function of enriching inorganic arsenic.
Furthermore, the ulva lactuca is also placed in the biological treatment tank, the density is 20 plants per cubic meter, the ulva lactuca does not have the function of enriching inorganic arsenic, but the ulva lactuca and the chlorella pyrenoidosa can generate certain interspecific assistance, so that the chlorella pyrenoidosa is stimulated to accelerate growth.
Further, the flow rate of the biological treatment tank is controlled to be 1-2 cubic meters per second. Is suitable for algae growth at low flow rate.
Experimental data
The surface fouling thickness of twenty electrode plates (ten of them are electrolyzed by traditional electrolysis method for 30 days, and the other ten are electrolyzed by the method of the invention for 30 days, the seawater is taken from the sea area near the jia dao in Hainan province) is measured, and the result is as follows:
the experiment proves that the service life of the electrolytic electrode can be prolonged.
The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (6)
1. The harmless method of inorganic arsenic in seawater is characterized by comprising the following steps: it comprises the following steps:
firstly, coarsely filtering natural seawater to remove macroscopic animals and plants;
step two, introducing the seawater treated in the step one into a reaction tank for electrolytic treatment;
step three, leading the seawater electrolyzed in the step two into a biological treatment tank, and obtaining harmless seawater after biological treatment;
wherein, the bottom of the reaction tank is uniformly blown with micro bubbles, the micro bubbles continuously impact an electrode plate for electrolysis, and the bottom of the reaction tank is uniformly blown with the large bubbles once every 1 minute.
2. The method for detoxifying inorganic arsenic in seawater according to claim 1, wherein: the current density on the surface of the electrode plate was set to 30A/dm2～40A/dm2The microbubbles are bubbles with initial diameter less than 1 mm, the density of the microbubbles is more than 1000 particles/liter, and the large bubbles are bubbles with initial diameter more than 10 cm.
3. The method for detoxifying inorganic arsenic in seawater according to claim 1, wherein: the flow rate in the reaction tank is 3-5 cubic meters per second, and the specific value of the flow rate is randomly selected.
4. The method for detoxifying inorganic arsenic in seawater according to claim 1, wherein: the biological treatment pool is filled with Chlorella pyrenoidosa, the initial density is 200 per milliliter, and the Chlorella pyrenoidosa is removed once per month, so that the density is lower than 300 per milliliter.
5. The method for detoxifying inorganic arsenic in seawater according to claim 1, wherein: ulva lactuca is also placed in the biological treatment tank, and the density is 20 plants per cubic meter.
6. The method for detoxifying inorganic arsenic in seawater according to claim 1, wherein: the flow rate of the biological treatment tank is controlled to be 1-2 cubic meters per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296628.2A CN112591980A (en) | 2020-11-18 | 2020-11-18 | Harmless method for inorganic arsenic in seawater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296628.2A CN112591980A (en) | 2020-11-18 | 2020-11-18 | Harmless method for inorganic arsenic in seawater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112591980A true CN112591980A (en) | 2021-04-02 |
Family
ID=75183202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011296628.2A Pending CN112591980A (en) | 2020-11-18 | 2020-11-18 | Harmless method for inorganic arsenic in seawater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112591980A (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW441615U (en) * | 1999-07-22 | 2001-06-16 | Jang Jr Ming | Improved device for electrolysis reaction tank |
| CN101177330A (en) * | 2007-08-10 | 2008-05-14 | 南京大学 | Method for preprocessing coking wastewater by electrochemical oxidation flocculating composite technique |
| CN102060356A (en) * | 2010-12-03 | 2011-05-18 | 东莞市可迪环保科技有限公司 | Ultrasonic-assisted ferric-carbon micro-electrolysis waste water treatment method |
| CN102687699A (en) * | 2012-05-21 | 2012-09-26 | 毛明艳 | Seawater cleaning system for aquiculture and seedling raising and use method of same |
| CN103351040A (en) * | 2013-08-01 | 2013-10-16 | 中国水产科学研究院黄海水产研究所 | Removing apparatus and removing method for inorganic arsenic in aquaculture underground seawater |
| CN103408109A (en) * | 2013-06-27 | 2013-11-27 | 北京仁创科技集团有限公司 | Water permeable battery lead plate and preparation method thereof |
| CN203440138U (en) * | 2013-06-27 | 2014-02-19 | 北京仁创科技集团有限公司 | Water-permeable electrode plate |
| CN104163478A (en) * | 2014-08-04 | 2014-11-26 | 陈致 | Emergency treatment method and emergency treatment device of organic micro-polluted drinking water |
| CN204111383U (en) * | 2014-08-04 | 2015-01-21 | 陈致 | A kind of organic micro-pollution drinking water emergency treatment unit |
| CN104522828A (en) * | 2014-12-19 | 2015-04-22 | 上海承煌实业有限公司 | Alga ferment healthcare solid drink and preparation process thereof |
| CN105060463A (en) * | 2015-08-12 | 2015-11-18 | 南宁柯林生物科技有限责任公司 | Wastewater treatment method adopting O2 produced by photosynthetic organisms to replace traditional aeration as well as application |
| CN107662999A (en) * | 2017-11-27 | 2018-02-06 | 成都市阿李科技有限公司 | A kind of blended process sewage device |
| CN108002605A (en) * | 2017-11-17 | 2018-05-08 | 浙江海洋大学 | The processing method of antibiotic in a kind of marine culture wastewater |
| CN207498217U (en) * | 2017-09-30 | 2018-06-15 | 山东建筑大学 | A kind of rainwater-collecting processing unit |
| CN110226510A (en) * | 2019-07-29 | 2019-09-13 | 广东海洋大学 | A kind of miscellaneous algae suppressing method in reef film category algae artificial culture |
-
2020
- 2020-11-18 CN CN202011296628.2A patent/CN112591980A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW441615U (en) * | 1999-07-22 | 2001-06-16 | Jang Jr Ming | Improved device for electrolysis reaction tank |
| CN101177330A (en) * | 2007-08-10 | 2008-05-14 | 南京大学 | Method for preprocessing coking wastewater by electrochemical oxidation flocculating composite technique |
| CN102060356A (en) * | 2010-12-03 | 2011-05-18 | 东莞市可迪环保科技有限公司 | Ultrasonic-assisted ferric-carbon micro-electrolysis waste water treatment method |
| CN102687699A (en) * | 2012-05-21 | 2012-09-26 | 毛明艳 | Seawater cleaning system for aquiculture and seedling raising and use method of same |
| CN203440138U (en) * | 2013-06-27 | 2014-02-19 | 北京仁创科技集团有限公司 | Water-permeable electrode plate |
| CN103408109A (en) * | 2013-06-27 | 2013-11-27 | 北京仁创科技集团有限公司 | Water permeable battery lead plate and preparation method thereof |
| CN103351040A (en) * | 2013-08-01 | 2013-10-16 | 中国水产科学研究院黄海水产研究所 | Removing apparatus and removing method for inorganic arsenic in aquaculture underground seawater |
| CN104163478A (en) * | 2014-08-04 | 2014-11-26 | 陈致 | Emergency treatment method and emergency treatment device of organic micro-polluted drinking water |
| CN204111383U (en) * | 2014-08-04 | 2015-01-21 | 陈致 | A kind of organic micro-pollution drinking water emergency treatment unit |
| CN104522828A (en) * | 2014-12-19 | 2015-04-22 | 上海承煌实业有限公司 | Alga ferment healthcare solid drink and preparation process thereof |
| CN105060463A (en) * | 2015-08-12 | 2015-11-18 | 南宁柯林生物科技有限责任公司 | Wastewater treatment method adopting O2 produced by photosynthetic organisms to replace traditional aeration as well as application |
| CN207498217U (en) * | 2017-09-30 | 2018-06-15 | 山东建筑大学 | A kind of rainwater-collecting processing unit |
| CN108002605A (en) * | 2017-11-17 | 2018-05-08 | 浙江海洋大学 | The processing method of antibiotic in a kind of marine culture wastewater |
| CN107662999A (en) * | 2017-11-27 | 2018-02-06 | 成都市阿李科技有限公司 | A kind of blended process sewage device |
| CN110226510A (en) * | 2019-07-29 | 2019-09-13 | 广东海洋大学 | A kind of miscellaneous algae suppressing method in reef film category algae artificial culture |
Non-Patent Citations (2)
| Title |
|---|
| 刘聪: "蛋白核小球藻对亚砷酸盐和砷酸盐的富集和转化研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 曹应科: "高砷锑粗铜电解沉积物的表面质量控制", 《湖南有色金属》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6689262B2 (en) | Microbubbles of oxygen | |
| KR101256896B1 (en) | A micro-current electrolysis sterilization algaecide device and method | |
| US3752747A (en) | Method for controlling algae pollution | |
| CN105347443A (en) | Livestock and poultry breeding wastewater treatment method | |
| CN102642955B (en) | Electrochemical removal method for heavy metals in breeding circulating seawater | |
| CN108002605B (en) | Method for treating antibiotics in mariculture wastewater | |
| CN106957092B (en) | Method for electro-removing ammonia nitrogen by three-dimensional pulse | |
| CN108094302A (en) | Method for purifying water and system and earthy taste of fresh water fish minimizing technology | |
| CN207995835U (en) | Water purification system | |
| CN106698852A (en) | Brassica juncea pickling waste water treatment device and method | |
| CN101723489A (en) | Solar photo/electric-Fenton treatment method for H acid wastewater of dye immediate | |
| CN111924939A (en) | Method for removing ammonia nitrogen and nitrite in aquaculture water body through microelectrode | |
| CN1303004C (en) | Method of electrolytic treatment of industrial or aquaculture waste water | |
| CN1594121A (en) | Combined water treatment technology and apparatus using electric current to electrolyze water | |
| CN112591980A (en) | Harmless method for inorganic arsenic in seawater | |
| CN107445256A (en) | A kind of continuous stream filtering type electrolysis ozone sterilizing method | |
| WO2023115607A1 (en) | Treatment apparatus and method for heavy metal-polluted wastewater | |
| US20130134053A1 (en) | Methods and devices for the treatment of fluids | |
| KR101368491B1 (en) | Appliance for electrolysis attached ship and the method of sterilizing red tied using it | |
| US10160669B2 (en) | Methods and devices for the treatment of fluids | |
| Bejan et al. | Electrochemical deodorization and disinfection of hog manure | |
| CN2647849Y (en) | Sewage nomal position purifier | |
| KR20010000262A (en) | Algae removal by electrochemical analysis using solar cells | |
| CN110776112A (en) | Organic wastewater treatment device based on biotechnology and use method thereof | |
| CN213475485U (en) | Device for treating heavy metal wastewater by electrochemical aeration nitrogen |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |
|
| RJ01 | Rejection of invention patent application after publication |