C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/52 (2006.01) C02F 1/48 (2006.01)
Patent
CA 2726737
Provided are a wastewater treatment method and a wastewater treatment apparatus, which removes magnetic flocs formed by adding to wastewater an inorganic flocculant, magnetic particles, and a polymeric flocculant, by which energy required for decomposition of collected magnetic flocs can be reduced. The wastewater is treated as follows: the inorganic flocculant is added to the wastewater to form microflocs; magnetic microflocs created in advance are added to this wastewater; the microflocs and the magnetic microflocs are combined with each other with the polymeric flocculant to form huge flocs; and the huge flocs are separated by a magnetic separation apparatus 8 to be collected. Subsequently, as well as decomposing the collected huge flocs with a hydrothermal reaction, only magnetic particles are collected by another magnetic separation apparatus 26, and then the magnetic particles are recycled.
Provided are a wastewater treatment method and a wastewater treatment apparatus, which removes magnetic flocs formed by adding to wastewater an inorganic flocculant, magnetic particles, and a polymeric flocculant, by which energy required for decomposition of collected magnetic flocs can be reduced. The wastewater is treated as follows: the inorganic flocculant is added to the wastewater to form microflocs; magnetic microflocs created in advance are added to this wastewater; the microflocs and the magnetic microflocs are combined with each other with the polymeric flocculant to form huge flocs; and the huge flocs are separated by a magnetic separation apparatus 8 to be collected. Subsequently, as well as decomposing the collected huge flocs with a hydrothermal reaction, only magnetic particles are collected by another magnetic separation apparatus 26, and then the magnetic particles are recycled.
Isogami Hisashi
Miyabayashi Satoshi
Mochizuki Akira
Sano Tadashi
Sasaki Hiroshi
Hitachi Plant Technologies Ltd.
Robic
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