Removal of ammonia from wastewater

Liquid purification or separation – Processes – Including geographic feature

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210750, 210766, 210903, C02F 120

Patent

active

046891560

ABSTRACT:
A method is provided for removing ammonia from wastewater containing in excess of about 15 ppm NH.sub.3 (N)-T. The method comprises treating the wastewater with an alkaline reagent selected from the group consisting of lime and caustic sufficient to raise the pH to provide a free ammonia equivalence (FAE) to a value of at least about 12.4, the free ammonia equivalence being determined as follows:

REFERENCES:
patent: 4045341 (1977-08-01), Tsuruta et al.
patent: 4076515 (1978-02-01), Rickard
patent: 4093544 (1978-06-01), Ross
patent: 4160725 (1979-07-01), Josis et al.
patent: 4311597 (1982-01-01), Bhattacharyya
patent: 4345975 (1982-08-01), Abe et al.
patent: 4559210 (1985-12-01), Diemer et al.

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