发明名称 |
REVERSE OSMOSIS MEMBRANE SEPARATION APPARATUS AND WATER PRODUCING METHOD |
摘要 |
PROBLEM TO BE SOLVED: To improve the linear velocity of fluid flowing in membrane surfaces of reverse osmosis membrane elements to suppress concentration polarization and making a reverse osmosis membrane separation apparatus sufficiently exhib capability of the reverse osmosis membrane elements by installing a reverse osmosis membrane module in which a plurality of reverse osmosis membrane elements are connected in series and specifying the cross-section surface area of a raw water flow route of the reverse osmosis membrane elements. SOLUTION: The reverse osmosis membrane part is composed of a module 3 to which a plurality of reverse osmosis membrane elements are boaded. In this case, the reverse osmosis membrane element 1 in the upstream side is made to have a wider cross-section surface area of a raw water flow route than the reverse osmosis membrane element 12 in the downstream side. The raw water passed through a raw water intake route 4 and pressurized by a pressurizing pump 5 and led to the module 3. Consequently, the raw water is subjected to reverse osmosis membrane treatment by the reverse osmosis membrane element 1 and the passed water is taken out through a passed water discharge route 7. The concentrated water which is not passed through the reverse osmosis membrane element 1 is led to the reverse osmosis membrane element 2 and treated by the element 2 and the passed water is discharged through the passed water discharge route 7 and concentrated water is discharged through a concentrated water discharge route 6.
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申请公布号 |
JP2000288356(A) |
申请公布日期 |
2000.10.17 |
申请号 |
JP20000024971 |
申请日期 |
2000.02.02 |
申请人 |
TORAY IND INC |
发明人 |
NAKANISHI TAKAYUKI;KIHARA MASAHIRO;TANIGUCHI MASAHIDE |
分类号 |
B01D61/08;B01D61/02;C02F1/44;(IPC1-7):B01D61/08 |
主分类号 |
B01D61/08 |
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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