||Ammonia Removal in a Physical-Chemical Wastewater Treatment Process.
Barne, Robert A. ;
Atkins, Jr, Peter F. ;
Scherge, Dale A. ;
||Ayres, Lewis, Norris and May, Inc., Ann Arbor, Mich.
||EPA-68-01-0049; EPA-17010-HAM; R2-72-123;
( Chemical removal(Sewage treatment) ;
( Sewage treatment ;
Chemical removal(Sewage treatment)) ;
( Chlorination ;
Pilot plants ;
Performance evaluation ;
Activated carbon treatment ;
Biochemical oxygen demand ;
Physical chemical treatment ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Discussed is a pilot scale study for ammonia removal at Owosso, Michigan, involving a physical-chemical wastewater treatment system consisting of chemical coagulation (lime to pH 8.8 to 9.4) sedimentation, deep bed filtration, carbon adsorption, chlorination to oxidize ammonia, and carbon dechlorination to remove free chlorine and chloramines. Ammonia-nitrogen was removed to any desired level by the chlorination-dechlorination system. Complete removal would require a chlorine to ammonia feed ratio of 9 to 1. The dechlorination carbon removed free chlorine and also the chloramines formed at less-than-breakpoint operation. There is an initial ammonia-nitrogen breakthrough when using fresh dechlorination carbon which is attributed to acclimation rather than continuous leakage. An hypothesis describing chloramine removal is presented.
||Paper copy available from GPO $1.25 as EP1.23/2:72-123.
||Evaluates chlorination and carbon dechlorination to remove ammonia.
|NTIS Title Notes
||Environmental Protection Technology series.
|PUB Date Free Form
||13B; 68D; 91A