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Computer Controlled Reverse Osmosis/Ultrafiltration Unit.

 
 
 

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PROCESS DIAGRAM AND UNIT ELEMENTS ALLOCATION OPEN CONTROL MULTICONTROL REAL TIME CONTROL This unit is composed by a three head positive displacement pump. The pump motor is controlled by an inverter that allows obtaining different flows depending on the required separation process. Because it is a positive displacement pump, the obtained flow is proportional to the motor speed. Therefore, the pump supplies the effluent to the two tubular membranes connected in series placed in the membrane module. This solution keeps moving in the inner part of the tube, the permeate flows radially from the inner part of the tube towards the outer one and the concentrate is obtained in the end of the tubes. The ROUC unit makes a filtration process by cross flow, which avoids the appearance of impurities that reduces the capacity of the system. The effluent moved by the pump receives some heat from the pump so its temperature increases. The permeate is stored in a final product tank. The concentrate goes back to the initial tank in order to be treated again as an effluent but, due to the increase of temperature, this concentrate passes through a heat plate exchanger. You have to know two different variables of the effluent in order to do the separation practices through Reverse Osmosis and Ultrafiltration:

  • Chemical composition of the fluid.
  • Characteristics of the membrane to know which one you should use in the process you want to obtain: the Cut-off point, which is defined as the allowed pass size and the Flow type that, in this case, consists on cross flow but it depends on the membrane system that has been used and its measurement depends on the required production. This Computer Controlled Unit is supplied with the EDIBON Computer Control System (SCADA), and includes: The unit itself + a Control Interface Box + a Data Acquisition Board + Computer Control, Data Acquisition and Data Management Software Packages, for

controlling the process and all parameters involved in the process.