Use of an Anode For Elimination or Reduction of Microbial Impurities in Liquids.

Abstract

The present invention relates to the use of an anode suitable for use in inter alia a reactor for elimination or reduction of microbial impurities from liquids, such as inter alia waste water and water intended for human or animal consumption. The anode comprises an expanded metal plate, preferably titanium, covered with a non-corrosive metal layer, preferably a platinum layer. The surface of the anode is endowed with dents, which enhances the electrochemical effect between the anode and the corresponding cathode and thereby enhances the microbial effect and at the same time reduces the energy required to obtain an efficient kill of the microorganisms,

1 . Use of an anode comprising a plate of expandable base-material subjected to:
 degreasing   acidic washing   glass-blowing   plating with anti-corrosive material   in a process for elimination or reduction of microbial impurities in liquids.   
     
     
         2 . Use of an anode according to  claim 1  wherein the expandable base-material is resistant to corrosion and at which platinum or similar metals can attach 
     
     
         3 . Use of an anode according to  claim 1  wherein platinum or similar metals can attach to the expandable base-material. 
     
     
         4 . Use of an anode according to  claim 1  wherein the expandable base-material is titanium or similar metals. 
     
     
         5 . Use of an anode according to  claim 1  wherein the anode is characterised in comprising indentations or dents, the diameter of said indentations or dents being between 10-40 μm. 
     
     
         6 . Use of an anode according to  claim 5  wherein the number of indentations or dents per square millimetre of the plate is between 50-500. 
     
     
         7 . Use of an anode according to  claim 1  wherein said acidic washing is carried out with nitric acid 
     
     
         8 . Use of an anode according to  claim 1  wherein said glass-blowing is applied using glass particles or glass beads of 75-150 μm in diameter. 
     
     
         9 . Use of an anode according to  claim 1  wherein the plating layer comprises pure platinum with a thickness 1.5±0.3 μm. 
     
     
         10 . Use of an anode according to a  claim 1  wherein the anode has a cylindrical geometrical shape. 
     
     
         11 . Use of an anode according to  claim 1  wherein multiple the plates are arranged in a sandwich-like or similar fashion. 
     
     
         12 . Use of an anode according to  claim 1  wherein the distance between the plates are 0.5-2.0 mm. 
     
     
         13 . Use of an anode according to  claim 1  wherein said liquid is water, including waste water from, for example, sewage plants, electroplating operations, food processing plants, fabric dye facilities, and the like. 
     
     
         14 . Use of an anode according to any of  claim 1  wherein said liquid is subjected to a filtrating pre-treatment. 
     
     
         15 . Use of an anode according to  claim 1  wherein said liquid is oil-water emulsions. 
     
     
         16 . Use of an anode according to  claim 1  wherein said anode is applied as offshore treatment of said liquid. 
     
     
         17 . Use of an anode according to  claim 1  wherein said liquid is intended for drinking water or other purposes in which water of drinking water quality is required.