The Scale and Antiscale Laws of the Main Ions in the Recycling Cooling System Used Reclaimed Water

Abstract

In recycling cooling system used reclaimed water, the main ions of the reclaimed water must form chemical scales with the increase of temperature and concentrate ratio , In order to control the formation of scale, we must control the fouling ion in the reclaimed water.In this paper the influence laws of Ca2+, Mg2+, HCO3- , SO42-, PO43-, NH4+ , NO2- , NO3- in reclaimed water on the scale inhibition are researched . The experimental results show that Ca2+, HCO3- , PO43- in reclaimed water have negative impact on scale and antiscale ;Mg2+ and NH4+ have positive effect on scale and antiscale;and SO42-, NO2- , NO3- hardly affected on scale and antiscale.