发明名称 |
DESALTING SYSTEM AND METHOD OF DESALTING |
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. |
申请公布号 |
EP2508481(A4) |
申请公布日期 |
2015.09.02 |
申请号 |
EP20100833104 |
申请日期 |
2010.11.16 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
TAKEUCHI, KAZUHISA;ITO, YOSHIAKI;KAKIGAMI, HIDEMASA;IWAHASHI, HIDEO;MATSUI, KATSUNORI;TANAKA, KENJI |
分类号 |
C02F1/44;B01D61/02;B01D61/04;B01D61/10;B01D61/12;B01D61/58;C02F1/76 |
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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