摘要:
Conjunto de membranas de fibra hueca entrelazadas en una malla y su aplicación en procesos de destilación en membrana para el tratamientoy/o desalinización de fluidos.
摘要:
A membrane stack comprising the following components: (a) a first ion diluting compartment (D1); (b) a second ion diluting compartment (D2); (c) a first ion concentrating compartment (C1); (d) a second ion concentrating compartment (C2); and (e) a membrane wall (CEM1, mAEM, mCEM, AEM, CEM2) between each compartment and on the outside of the first and last compartment of the stack; wherein: (i) each membrane wall comprises a cation exchange membrane (CEM1, mCEM, CEM2) or an anion exchange membrane (mAEM, AEM) and the order of the cation and anion exchange membranes alternates from each wall to the next; (ii) the membrane walls (mAEM, mCEM) on each side of compartment (a) both have a higher monovalent ion selectivity than the corresponding membrane walls (AEM, CEM2) on each side of compartment (b); and (iii) the stack further comprises a means for communicating fluid between compartments (a) and (b).
摘要:
The present invention relates to sea water desalination without power consumption. Sea water desalination process take place without power consumption by using water column resulted from sea water desalination stored on mountain surface reduces pressure on fresh water, thus pressure on sea water is more than pressure on fresh water, therefore water moves from sea water to fresh water. Amount of power consumption to lift sea water on mountain surface equal to amount of power consumption resulted from using water turbines via more salted water and fresh water.
摘要:
The DAC shown in Figures (5,6&7) consists mainly of double acting hydraulic cylinders consists of four chambers, all the pistons are of same surface area and are attached to the same shaft or axe, while it moves in two strokes "right and left" controlled by two limit switches, four check valves and directional control valve. The energy recovery device ERD (D-A-C) was designed manufactured and tested in reverse osmosis desalination plant and was compared with the performance of other energy recovery device {PX30S with booster pump). And the new ERD succeeded to omit the booster pump from the system and make the feed pump to play both roles of {feed and booster pump}. Also the new ERD leads to zero% of mix through it which improve the specific energy consumption of the desalination plant. In addition the new ERD removed the throttle valve (12) from the system in which avoiding energy pressure losses through this throttle valve (nearly 50% of feed pump energy).
摘要:
A control method and system for controlling the operation of a seawater injection system (1) comprising at least one water treatment line in which seawater is forced through one or more coarse filtration unit(s)(2), ultrafiltration unit(s) (3) and at least one of a reverse osmosis unit (4) and/ora nanofiltration unit (5) to a water injection pump(6), and wherein the flowrate required to create differential pressure across membrane(s) (9) of the ultrafiltration unit(s)(3)is obtained by a boosting pump (8). A controller "C" implemented operation control is applied to adjust automatically the outlet pressure and flow of the boosting pump (8)such that an average flowrate through the ultrafiltration units is maintained and determined as boosting pump flow divided by the number (N) of active ultrafiltration units. A proportional-integral-derivative (PID) control mechanism (18) is preferably applied to all adjustable flow/pressureregulating units in the seawater injection system.