Ammonia Stripping vs Ion Exchange Essay Example | Topics and Well Written Essays - 500 words

Ammonia Stripping vs Ion Exchange - Essay ExampleIt is recovered as a gas by raising pH of body of water with alkaline addition such as caustic or lime (EPA 1). The procedure is enhanced by increasing the operate temperature of rise (Henze and van Loosdrecht 140). Two types of towers are used in ammonia stripping i.e. cross flow and counter current. A cross flow tower permits the solvent gas (air) into total depth of fill and flows through the packing as the alkaline waste water flows downward. On the other(a) hand, in a counter current tower, air enters through openings at the bottom as waste water is propelled to the top of packed tower. Free NH3 is converted into air menstruum from falling water and discharged into atmosphere (EPA 1) Advantages and disadvantages of ammonia stripping It is a simple mechanical process which is not affected by waste water fluctuations and is not disrupted by presence of toxic substances given the air temperature and pH remains stable. It creates no back wash or regenerations. On the other hand, ammonia stripping has several disadvantages which include higher maintenance costs and power requirement for pumping. It does not remove nitrite or organic nitrogen. Air pollution problems may occur due to NH3 reaction and high pH may corrode the wood of stripping tower (EPA 2).