铵态氮肥应用于树脂再生并回收利用原水硝态氮

Application of Ammonium Nitrogen Fertilizer in Regeneration of Anion Exchange Resin and Reutilization of Nitrate Nitrogen in Raw Water

一般离子交换法去除饮用水硝酸盐往往伴生再生废盐水。为了回避了再生废盐水的处理需求,用较常见的铵态氮肥(NH4HCO3和NH4Cl)作为再生盐,通过不同组合用于树脂再生,将其转化为富集了硝态氮的液体氮肥并改善原肥适应性。该法适用于施肥频繁量大、连片开发的城郊农业生产。

Regeneration saline wastewater was produced when nitrate was removed in drinking water by ion exchange method generally. For avoidance of treatment of regeneration saline wastewater,ammonium nitrogen fertilizer such as NH4 HCO3 and NH4 Cl was used as regeneration salt,which was to regenerate resin at different rations and concentrations,and to form liquid nitrogen fertilizer enriching nitrate. Such method was fit for fertilizing contiguous suburb frequently and heavily.