Title:
リン酸イオンと硝酸イオンを除去する汚染水浄化方法および装置
Document Type and Number:
Japanese Patent JP7391366
Kind Code:
B2
Abstract:
To solve the problems in which: in the purification of polluted water such as eutrophic lakes, biological methods are generally used to remove phosphate and nitrate ions; but stable treatment is difficult and there is also difficulty in treating organic matter such as sludge and plants produced from nitrogen and phosphorus; in addition, reaction rates of biological phosphorus accumulation and denitrification are low; on the other hand, a method which applies electrolysis is proposed, but the cost of electricity used for electrolysis and the catalysts used are expensive and cause a huge cost problem.SOLUTION: A method for purifying polluted water includes: a phosphate ion removing and recovering step which causes power generation with the polluted water as electrolytic water in a battery tank including a battery with iron as the anode and carbon as the cathode and precipitates phosphate ions as iron phosphate; a hydrogen generating step which electrolyzes the polluted water in an electrolytic tank to generate hydrogen; and a nitrate ion removing step which reduces and removes nitrate ions with the generated hydrogen. There is also provided a device for performing the above steps.SELECTED DRAWING: Figure 1
Inventors:
Yuji Takagi
Akio Honda
Yuto Kizu
Hayato Matsumoto
Ayari Ikeda
Reisei Aihara
Fukufumi Ogawa
Yuki Mimuro
Akio Honda
Yuto Kizu
Hayato Matsumoto
Ayari Ikeda
Reisei Aihara
Fukufumi Ogawa
Yuki Mimuro
Application Number:
JP2019232456A
Publication Date:
December 05, 2023
Filing Date:
December 24, 2019
Export Citation:
Assignee:
Shizuoka Institute of Technology
International Classes:
C02F1/461; C02F1/30
Domestic Patent References:
| JP2000334465A | ||||
| JP2004066223A | ||||
| JP2011115728A |
Attorney, Agent or Firm:
Shinsuke Honjo
Kazuhisa Iwanaga
Kazuhisa Iwanaga