Method and system for improved biological nitrification of waste

Details Method and system for improved biological nitrification of waste Method and system for improved biological nitrification of waste

1997-06-25

1998-09-22

Upton, Christopher

Liquid purification or separation

Processes

Treatment by living organism

210607, 210622, 210625, 210903, C02F 330

Patent

active

058110097

ABSTRACT:
The present invention entails a method and system for enhancing biological nitrification in a wastewater treatment process. The process entails both a mainstream wastewater process and a sidestream process wherein the sidestream process produces an abundant supply of supplemental nitrifiers that are in turn directed into the mainstream for assisting in carrying out the nitrification process in the mainstream. Specifically, the sidestream process includes directing a liquid stream (such as a dewatering liquid) having a high ammonia concentration at an elevated temperature into a sidestream nitrification zone which is operated at conditions which maximize production of nitrifiers therein. Afterwards, the resulting nitrifiers produced in the sidestream nitrification zone are directed into the mainstream where the nitrifiers function to enhance nitrification in the mainstream and allows operation at low sludge retention time conditions where nitrification otherwise could not be sustained.

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Tendaj-Xavier, Marta "Biological Treatment of Sludge Water From Centripugation of Digested Sludge" pp. 15-18, Aug. 1985.

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