Organic phosphonates are widely used in Reverse Osmosis ( RO ) wastewater purification due to their strong chelating ability to metal ions , corrosion inhibition and scale inhibition .The reaction of SO4 and HO with NTMP in the reaction system was quantified for the first time by the precise measurement technique of chemical probe .It can be used for deep treatment and reuse of similar wastewater , and plays an important role in current water ecological protection and wate...