发明名称 |
DESALINATION APPARATUS AND DESALINATION METHOD |
摘要 |
A desalination apparatus includes a pretreatment device 13 having a pretreatment membrane 13a that filters suspended matters in raw water 11 with added chlorine-containing water 12, a reverse osmosis membrane device 17 having a reverse osmosis membrane 16 that removes a salt content from filtrate water 14 supplied from the pretreatment device 13 to produce permeated water 15, and a reducing-agent injection device 30 that neutralizes the added chlorine on an upstream side of the reverse osmosis membrane device 17. The reducing-agent injection device 30 extracts a part 14a of the filtrate water 14, adds metering SBS solution 18 to the part, obtains a maximum change point (equivalence point) of the oxidation-reduction potential of a reducing agent and chlorine, obtains reducing-agent additive concentration (Csm) corresponding to the equivalence point, and supplies the SBS solution 18 corresponding to the concentration to the filtrate water 14 to thereby neutralize the chlorine.
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申请公布号 |
US2012211420(A1) |
申请公布日期 |
2012.08.23 |
申请号 |
US201013508155 |
申请日期 |
2010.11.16 |
申请人 |
TAKEUCHI KAZUHISA;ITO YOSHIAKI;KAKIGAMI HIDEMASA;IWAHASHI HIDEO;MATSUI KATSUNORI;TANAKA KENJI;MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
TAKEUCHI KAZUHISA;ITO YOSHIAKI;KAKIGAMI HIDEMASA;IWAHASHI HIDEO;MATSUI KATSUNORI;TANAKA KENJI |
分类号 |
C02F1/44;C02F1/66;C02F1/70 |
主分类号 |
C02F1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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