Water treatment device

Abstract

A water treatment device, having a housing with duct areas which are used to conduct the water to be treated. At least a first and a second electrode are accommodated in the housing. The first and second electrodes are alternately positive-poled and negative-poled. Electro-conductive material is introduced into the housing. In order to provide a water treatment device which can be operated on a permanent basis with a high degree of efficiency, the first and second electrodes are arranged in separate first and second electrode chambers which are insulated from each other by one or several insulating bodies, the electrode chambers are respectively filled with a bulk material of a uniform granulated material, and the insulating bodies are pervious to water to be treated but are impervious to the granulates forming the bulk material.

1 . A device for treating water, having a housing with conduit areas for conducting the water to be treated, wherein at least one first and one second electrode is arranged in the housing, wherein the first and second electrodes are alternatively positively and negatively polarized, and wherein an electrically conductive bulk material has been placed into the housing, 
 characterized in that    the first and second electrodes ( 22 . 1 ,  22 . 2 ) are housed in first and second electrode chambers ( 21 . 1 ,  21 . 2 ), which are separated from each other and are electrically insulated from each other by means of one or several insulating bodies ( 50 ),    each of the electrode chambers ( 21 . 1 , 21 . 2 ) is filled by bulk material consisting of a uniform granulate, and    the insulating bodies ( 50 ) are permeable to the water to be treated, but impermeable to the granulated bulk material.    
     
     
         2 . The device in accordance with  claim 1 , 
 characterized in that    the bulk material is a fixed bed electrode consisting of carbon granules.    
     
     
         3 . The device in accordance with  claim 1  or  2 , 
 characterized in that  
 the insulating bodies ( 50 ) are embodied as bulkhead walls and have a screen-like passage area for the water to be treated, wherein the opening sizes of the openings constituting the passage areas are less than the granule diameters of the particles of the bulk material.  
 
     
     
         4 . The device in accordance with  claims 1  to  3 , 
 characterized in that  
 the first and second electrodes ( 22 . 1 ,  22 . 2 ) are embodied rod-like and are surrounded over their entire length by the bulk material.  
 
     
     
         5 . The device in accordance with one of  claims 1  to  4 , 
 characterized in that  
 a conduit area ( 20 ) which is surrounded by an area which receives the electrode chambers ( 21 . 1 ,  21 . 2 ) is arranged in the housing ( 25 ),  
 the conduit area ( 20 ) is in spatial connection with the electrode chambers ( 21 . 1 ,  21 . 2 ) via the openings,  
 the side of the electrode chambers ( 21 . 1 ,  21 . 2 ) which faces away from the conduit area ( 20 ) in the radial direction is covered by means of a liquid-permeable shell ( 23 ), and  
 a conduit section ( 24 ) adjoins the shell ( 23 ) in the housing ( 25 ).  
 
     
     
         6 . The device in accordance with one of  claims 1  to  5 , 
 characterized in that  
 the electrode chambers ( 21 . 1 , 21 . 2 ) are separated from each other by insulating bodies ( 50 ) which substantially extend in the flow direction of the water to be treated.  
 
     
     
         7 . The device in accordance with one of  claims 1  to  6 , 
 characterized in that  
 the electrode chambers ( 21 . 1 ,  21 . 2 ) are separated from each other by insulating bodies ( 50 ) extending transversely in respect to the flow direction of the water to be treated, and  
 the electrode chambers ( 21 . 1 ,  21 . 2 ) are arranged one behind the other in the flow direction.  
 
     
     
         8 . The device in accordance with  claim 7 , 
 characterized in that    viewed in the flow direction, an oxidation zone, through which the water treated in the associated electrode chamber ( 21 . 1 ,  21 . 2 ), or in several electrode chambers ( 21 . 1 ,  21 . 2 ), is conducted, is arranged behind at least one of the electrode chambers ( 21 . 1 ,  21 . 2 ).    
     
     
         9 . The device in accordance with one of  claims 1  to  8 , 
 characterized in that  
 different volume flows of the water to be treated flow through the electrode chambers ( 21 . 1 ,  21 . 2 ) of different polarization.  
 
     
     
         10 . The device in accordance with one of  claims 1  to  9 , 
 characterized in that  
 the length of polarization of the cathodic and the anodic phases of at least one of the electrodes ( 22 . 1 ,  22 . 2 ) is selected to be different.  
 
     
     
         11 . The device in accordance with one of  claims 1  to  10 , 
 characterized in that  
 the electrodes ( 22 . 1 ,  22 . 2 ) are arranged at least partially concentrically in respect to the conduit area ( 20 ) arranged in the housing ( 25 ), and  
 the electrodes ( 22 . 1 ,  22 . 2 ), which are arranged on a graduated circle around the conduit area ( 20 ) are distributed equidistantly in respect to each other in the ambient direction.  
 
     
     
         12 . The device in accordance with one of  claims 1  to  11 , 
 characterized in that  
 the water to be treated flows through a magnetic treatment device prior to entering the housing ( 25 ).