WATER TREATMENT METHOD AND WATER TREATMENT SYSTEM
- 申请公布号：
- JP2014061486(A)
- 申请号：
- JP20120208688
- 申请日期：
- 2012.09.21
- 申请公布日期：
- 2014.04.10
- 申请人：
- KUBOTA CORP
- 发明人：
- YOSHIZAKI YASUHIRO
- 分类号：
- C02F1/44;B01D61/00;B01D61/02;B01D61/04;B01D61/58;C02F1/72;C02F3/12;C02F11/02;C02F11/06
- 主分类号：
- C02F1/44
- 摘要：
- PROBLEM TO BE SOLVED: To provide a water treatment method and a water treatment system capable of relatively easily concentrating the water to be treated and efficiently treating the obtained concentrated water.SOLUTION: Provided is a water treatment method comprising:a step in which, in a state where the water to be treated is introduced into a positive osmosis membrane device and is made present on the primary side of a first semi-permeable membrane provided at the positive osmosis membrane device, and a hypertonic solution under the osmotic pressure higher than that of the water to be treated is made present, the water from the water to be treated is permeated from the primary side of the first semi-permeable membrane to the secondary side, thus the water to be treated is concentrated, and concentrated water is obtained; and a step in which the concentrated water is introduced into a reaction tank, and aeration treatment is performed.
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