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    • 7. 发明申请
    • METHOD OF OPERATING REVERSE OSMOSIS MEMBRANE APPARATUS
    • 操作反渗透膜装置的方法
    • US20160002071A1
    • 2016-01-07
    • US14768548
    • 2014-02-10
    • MITSUBISHI HEAVY INDUSTRIES, LTD.
    • Kiichi TokunagaTakeshi Yasunaga
    • C02F1/44
    • C02F1/441B01D61/025B01D61/12B01D2311/10B01D2311/16B01D2311/246B01D2313/243C02F2103/08Y02A20/131
    • To enable energy-saving operation and stable supply of permeate water while water quality level of the permeate water is satisfied during operation, clarified seawater sw subjected to pretreatment and stored in to-be-treated water tank 12 is supplied to reverse osmosis membrane module 14 via clarified seawater supply passage 16. Permeate water pw obtained by an earlier stage element of the reverse osmosis membrane elements 36 of the reverse osmosis membrane module 14 is sent to a subsequent process from permeate water sending passage 46, and permeate water pw obtained by the reverse osmosis membrane element 36 is circulated into the to-be-treated water tank 12 via permeate water circulation passage 48. The flow rate of the clarified seawater sw supplied to the reverse osmosis membrane module 14 is controlled by variable flow rate high-pressure pump 22 provided in the clarified seawater supply passage 16, and opening degree of flow regulating valve 68 provided in the permeate water circulation passage 48 is controlled, whereby the circulation flow rate of the permeate water is controlled.
    • 为了能够在运行中满足渗透水的水质的同时进行节能运行和稳定的渗透水的供给,并将经过预处理并储存在待处理水箱12中的澄清的海水SW供给到反渗透膜组件14 通过澄清的海水供给通道16将由反渗透膜组件14的反渗透膜元件36的较早级元件获得的渗透水输送到渗透水送出通道46的后续处理, 反渗透膜元件36通过渗透水循环通道48循环到被处理水箱12.供给反渗透膜组件14的澄清海水SW的流量由可变流量高压泵 设置在澄清的海水供应通道16中,以及设置在渗透水循环中的流量调节阀68的开度 控制通道48,从而控制渗透水的循环流量。