Title:
水処理システム及び水処理方法
Document Type and Number:
Japanese Patent JP5020397
Kind Code:
B1
Abstract:
[Problem] To provide a water treatment device and water treatment method that increase the elimination efficiency for phosphorus. [Solution] In a water treatment system in which the phosphorus included in water to be treated is eliminated by being brought into contact with a phosphorus eliminating filter medium, the phosphorus eliminating filter medium is obtained by mixing slag with an average particle size of 0.1 mm or less with a clayey binder, granulating the mixture into particles with an average particle size of 0.3 mm or less and firing same. The water treatment system is provided with: a mixing tank in which the phosphorus eliminating filter medium is added to water to be treated; a filter medium adding device that adds the phosphorus eliminating filter medium to the mixing tank; a sedimentation separation tank or solid-liquid separation device that separates the phosphorus eliminating filter medium from the water to be treated, from which the phosphorus has been eliminated, by solid-liquid separation performed on the water to be treated that contains the phosphorus eliminating filter medium discharged from the mixing tank; and a filter medium adding device that re-adds the phosphorus eliminating filter medium separated from the water to be treated by the sedimentation separation tank or solid-liquid separation device or the phosphorus eliminating filter medium in which part of the phosphorus eliminating filter medium is extracted and undergoes reactivation treatment to the stirring tank, which has been supplied with new water to be treated.
Inventors:
Kiyama
Application Number:
JP2011143063A
Publication Date:
September 05, 2012
Filing Date:
June 28, 2011
Export Citation:
Assignee:
Asaka Riken Co., Ltd.
International Classes:
C02F1/58
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Attorney, Agent or Firm:
Mizuno Katsufumi
Masayuki Kishida
Yasushi Takagi
Masayuki Kishida
Yasushi Takagi