nitrate removal by ion exchange wqp – water treatment in india

nitrate removal by ion exchange wqp – water treatment in india
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  • Can anion exchange resin remove nitrates from aqueous solutions/treated wastewater?
  • To enable the reliable removal of nitrates from aqueous solutions/treated wastewater, anion exchange resin was used. Ion exchange with strong basic anion exchange resin is an effective way of nitrate removal. Scanning electron microscopy was evaluated to understand the morphology of the resin prior all laboratory studies.
  • How do you remove nitrate from water?
  • Conventional ion exchange (IX, (the most common method for nitrate removal, utilizes a strong base anion (SBA) exchange resin. In this process, the raw water is pretreated to remove suspended solids and other constituents that are capable of fouling the resin column (Liu and Clifford 1996; Ruppenthal 2004).
  • How does nitrate removal work?
  • Anion resins used for nitrate removal are regenerated into the chloride form after each regeneration and initially remove all ions in exchange for chlorides — not only nitrates, but also sulfates and alkalinity. The removal of alkalinity causes a drop in pH in the treated water to less than 5 in the beginning of each service cycle.
  • What is anion exchange treatment?
  • In anion exchange treatment, water passes through a bed of synthetic resin. Nitrate ions in the water are exchanged with ions, typically chloride, that are preloaded onto the resin. When the capacity of the resin is exhausted, it is regenerated to restore it to its initial condition using a solution of sodium chloride (also known as brine).