DUAL HEAD PUMP DRIVEN MEMBRANE SYSTEM
    4.
    发明公开
    DUAL HEAD PUMP DRIVEN MEMBRANE SYSTEM 有权
    BY双头浦驱动膜系统

    公开(公告)号:EP1453592A4

    公开(公告)日:2005-08-17

    申请号:EP02752380

    申请日:2002-07-16

    申请人: MIOX CORP

    摘要: Improvements in product water throughput from a reverse osmosis (RO) membrane achieved by thinner feed spacers in the RO element (22), enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure, and fluid pulsing of the RO element feed stream. These features are preferably combined to optimize the performance and cost per unit volume of water produced. The system of the invention preferably comprises a dual head reciprocating pump (20), an RO element (22) with a housing, and a differential pressure activated ("DPA") valve (24). The DPA valve (24), in combination with offsetting fluid pressures on the two pump heads (28, 30), generate energy recovery. The frequency and amplitude of the reciprocating pump (20) create a pulse wave in the RO element (22) that improves permeate quality and throughput. A control system preferably monitors system parameters to optimize the reciprocating pump (20) speed and amplitude to tune the optimal frequency and amplitude required for maximum throughput and permeate quality from any given RO element (22) configuration.