Abstract:
The present invention relates to a liquid distribution or collection device (100) for a vessel containing material to which the liquid is to be delivered, the device having a plurality of conduits (102, 103, 104, 105, 106) extending from a liquid transport channel (101), in which at least one said conduit comprises a proximal end (112) in communication with the liquid transport channel (101), a distal end (113) remote from the liquid transport channel (101) and, between said proximal and distal ends, a multiplicity of spaced apertures (118) for passage of liquid, wherein a distal region of the conduit has a cross-sectional area d2 that is smaller than the cross- sectional area d1 in a proximal region of the conduit. The present invention also relates to an ion exchange or filtration vessel (1) comprising said device and a method of distributing a fluid onto a substrate in a vessel using said device.
Abstract:
An ion exchange scrubber has a housing, and a partition plate installed within the housing. The partition plate partitions an inner space of the housing in longitudinal direction into two chambers that are filled with a predetermined amount of aqueous solution. The upper end portions of the two partitioned chambers communicate with each other. At least one cartridge is installed at the upper portion and has an ion exchange resin. At least one gas inlet hole is formed in an external plate of the chamber at position below the position where the cartridge is installed. At least one gas inlet tube is connected with the gas inlet hole. A gas exhaust hole is formed in an upper plate of the housing. At least one introduction/exhaustion hole is formed at a lower portion of the chamber, for supplying or exhausting the aqueous solution. At least one connection tube connects the introduction/exhaustion holes with each other. At least one level control valve is installed in the at least one connection tube. The ion exchange resin removes a harmful substance contained in the gas. By repeatedly pumping the aqueous solution from one side chamber to the other side chamber, and immersing and cleaning the contaminated ion exchange resin in the aqueous solution, the contaminated gas can be effectively processed even with a small amount of water.
Abstract:
An apparatus and method for the treatment and purification of drinking water combines the use of ion-exchange resin and a membrane filter (12) in a single process tank (14). The ion-exchange resin is removed from the process tank (14) and regenerated in column (24) for reuse.
Abstract:
A process for the removal and destruction of dissolved nitrate from water, which comprises a removal step where nitrate is eliminated from said water or effluent in the form of a more concentrated solution thereof, and a destruction step where said more concentrated nitrate solution is subjected to an electrolysis operation for nitrate destruction by electrochemical reduction thereof, the electrolysis operation being performed in several cycles in a divided cell with anolyte and catholyte compartments, where said concentrated nitrate solution is initially used as a catholyte and spent catholyte is then used as an anolyte. An apparatus suitable for performing such a process.
Abstract:
An ion exchanger (10) of the countercurrent type includes a pressure vessel (12) for supporting a resin bed (14). During a normal regeneration cycle, the vessel (12) exhibits both cocurrent and countercurrent operation.
Abstract:
Described herein are processes and apparatus for the high purity and high concentration recovery of multivalent products via continuous ion exchange from aqueous solutions for further down-stream purification.
Abstract:
A process for the regeneration of loaded ion-exchange resin comprising (a) providing loaded resin for regeneration; (b) providing first stage and third stage regenerant suitable for regenerating loaded resin; (c) providing a plurality of regeneration vessels; (d) filling a regeneration vessel with a desired amount of the loaded resin before filling another regeneration vessel; (e) once a regeneration vessel has been filled, contacting the loaded resin within the vessel with first stage regenerant in a plug flow to provide a first stage regenerated resin; (f) contacting the first stage regenerated resin with third stage regenerant in a plug flow to provide regenerated resin and (g) removing and collecting third stage regenerant from a vessel containing regenerated resin and adding the collected regenerant to the first stage regenerant.