From: |||newspam|||@nezumi.demon.co.uk   
      
   On 11/11/2016 15:10, dlzc wrote:   
   > Let's say I am looking to reuse irrigation water, for irrigation.   
    > I will apply some prescription dose of ozone, for pathogen   
   inactivation (at minimum).   
   >   
   > The source water contains:   
   > - Potassium > 90 ppm   
   > - Ammonium as NH4-N > 61 ppm   
   > - Phosphate > 90 ppm   
   > - soluble Iron and Manganese (not permanganate) are present at elevated   
   levels, but not toxically high   
   >   
   > Need at least a factor of 10 reduction in Potassium, "Ammonium", and   
   Phosphate   
      
   Why?   
      
   Wouldn't it be simpler to reuse the irrigation water by cutting it with   
   fresh water at the appropriate rate and at the same time cut back on the   
   application of artificial NPK fertilisers to the land.   
      
   > Will electro-deionization remove some of this?   
   >   
   > Water re-use is a big deal.   
   >   
   > Would this "large fishing net" be of any interest to chemists?   
   >   
   > Where would someone go with a water chemistry problem, for solutions?   
      
   I doubt that you can do anything cost effective against NPK.   
      
   There might be some tricks to chelate out iron and manganese based on   
   the relative insolubility of Ferric oxide and Manganese Dioxide.   
      
   --   
   Regards,   
   Martin Brown   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)