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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/038393
Kind Code:
The present invention relates to a water treatment apparatus that has been made to solve the problem described above, the water treatment apparatus, according to the present invention, comprising: an upward filtration tank (110) which, in order to remove phosphorus contained in polluted water, is provided with a filtration unit (111) filled with magnetite (Fe3O4) powder which is a by-product of a steel-rolling process; a first flow path (P1) which transfers polluted water to the filtration tank (110); a branching pipe path (150) which downwardly introduces, into the filtration tank (110), washing water for washing phosphorus adsorbed on the surface of the magnetite (Fe3O4) having magnetic force, and which is coupled to the filtration tank (110) in order to discharge the polluted water that has passed through the filtration unit (111), wherein the branching pipe path (150) comprises a coupling part (151) coupling with the filtration tank (110), an outlet part (154) coupled to the coupling part (151) by means of a bent section (152), and an inlet part (155) coupled to a branching section (153) of the outlet part (154); a first adsorption device (160) which is provided to the coupling part (151) in order to recover, using magnetic force, magnetite (Fe3O4) powder that is contained in the polluted water as a result of breaking away from the filtration unit (111); a first adsorption unit (A) which is formed on an inner surface of the coupling part (151) by means of the magnetic force of the first adsorption device (160); a second flow path (P2) which is coupled to the outlet part (154) in order to discharge the polluted water; a third flow path (P3) which is coupled to the inlet part (155) so as to enable washing water to be introduced; a washing water tank (120) which is connected to the third flow path (P3); a fourth flow path (P4) which is connected to the filtration tank (110) so as to discharge the washing water; and a phosphorus discharge tank (130) which is connected to the fourth flow path (P4). In this case, the water treatment apparatus, according to the present invention, uses, among iron oxides (Fe2O3, Fe3O4, FeO) which are by-products generated in steelmaking, magnetite (Fe3O4) exhibiting excellent phosphorus or heavy metal adsorption as an adsorbent, and thus the by-products may be recycled. Particularly, magnetite exhibits a strong magnetic force, and has excellent phosphorus adsorption capacity by having a monodentate and a bidentate formed with a phosphate ion on the particle surface thereof (see figure 1), and thus may effectively remove phosphorus from polluted water.

KIM, Yun Jung (104-504, Songdo Seongji Ribelluse Apt. 7, Sinsong-ro 6beon-gil,Yeonsu-gu, Incheon, 21994, KR)
NAM, Hai Uk (901-1801, the sharp expo 77, Convensia-daero 42beon-gil,Yeonsu-gu, Incheon, 22001, KR)
CHOI, Young Kyun (102-2202, Taewang Legend Apt. 27, Uksucheon-ro,Suseong-gu, Daegu, 42282, KR)
Application Number:
Publication Date:
March 01, 2018
Filing Date:
July 14, 2017
Export Citation:
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POSCO ENGINEERING & CONSTRUCTION CO., LTD. (180 Daesong-ro, Nam-guPohang-si, Gyeongsangbuk-do, 37863, KR)
International Classes:
C02F1/28; B01D24/16; B01D24/46; B01D24/48; B03C1/30; C02F1/58; C02F101/10
Attorney, Agent or Firm:
B&IP-JOOWON PATENT AND LAW FIRM (9th Floor, Construction Center Eonju-ro 711,Gangnam-gu, Seoul, 06050, KR)
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