Patent DE-102005048163-A1 (DE)
Title: Reverse osmosis system for producing pure water/high purity water from pre-purified raw water, comprises reverse osmosis module with semipermeable membrane, raw water entry, pure water exit and concentrate exit
Inventor: SATIR OENDER
IPC: B01D61/12
Filed: 2005-10-06
Abstract: A reverse osmosis system for producing pure water/high purity water from pre-purified raw water, under the separation of a concentrate enriched with solutes in the passage of the pure water by a semipermeable membrane (2), comprises a reverse osmosis module (3) with the membrane (2), raw water entry (4), a pure water exit (5), a concentrate exit (6) and a compressing device for pressure application of the raw water in the module. A limiting device for limiting concentrate flow and a measuring device, which are arranged at the concentration exit side. The reverse osmosis system for producing pure water/high purity water from pre-purified raw water, under the separation of a concentrate enriched with solutes in the passage of the pure water by a semipermeable membrane (2), comprises a reverse osmosis module (3) with the membrane (2), raw water entry (4), a pure water exit (5), a concentrate exit (6) and a compressing device for pressure application of the raw water in the module. A limiting device used for limiting the concentrate flow and a measuring device, which are arranged at the concentration exit side. The concentrate flow is changeable based on a physically measured variable of the pure water and/or the raw water via the limiting device. The osmosis module shows a housing for receiving the membrane with a housing body, a front side inlet flange and a front side outlet flange. The measuring device is sensitive for determining the measured variable of the pure water quality. The measuring device is a conductance-detecting device for detecting the conductance of the pure water and is arranged in such a way that it detects the measured variable of the pure water in the pure water exit. A pressure-detecting device is arranged to detect the pressure of the raw water at a place between the compression device and the reverse osmosis module, and the detected pressure serves as physically measured variables. A display or monitoring device is arranged to display or monitoring the variables. A control- or regulation loop is arranged to control or regulate the concentrate flow rate depending upon the variables. The limiting device exhibits an adjustable and/or controllable needle valve. The raw water entry is connected to the inlet flange and/or the pure water exit and/or the concentrate exit are connected at the outlet flange. The inlet flange and/or outlet flange are removable by the housing body. The membrane is insertable into the housing by both openings of the front side. The entry and exit of the housing are made of stainless steel. The discharge quantity of the pure water is detectable and with the consideration of limit values at the solutes, the discharge quantity in the direction of maximal discharge quantity is adjustable and/or controllable by an automatic regulation mechanism to receive a pure water quality. An independent claim is included for producing pure water/high purity water from pre-purified raw water.