System for treating waste water by nitrification

Details System for treating waste water by nitrification System for treating waste water by nitrification

1990-02-16

1991-10-29

Wyse, Thomas

Liquid purification or separation

With gas-liquid surface contact means

With separator

2101951, 210202, 210207, 210903, C02F 330

Patent

active

050613685

ABSTRACT:
A system for treating waste water using a particulate body formed by covering and fixing nitrifying bacteria. In the system, the particulate body is inserted in a nitrifying vessel which including therein an air diffusion device for supplying oxygen to the nitrifying bacteria and a particulate body separation device for preventing the outflow of the particulate body. The nitrifying vessel and the particulate body contained therein are used as a nitrifying vessel unit and one or more such nitrifying vessel units are arranged within a treating tank. Waste water is circulated between the nitrifying vessel and the other portions of the treating tank than the nitrifying vessel by means of the air lift effect of the air diffused from the air diffusion device.

REFERENCES:
patent: 4188289 (1980-02-01), Besik
patent: 4681685 (1987-07-01), Sutton et al.
patent: 4696740 (1987-09-01), Mochizuki et al.
patent: 4731185 (1988-03-01), Chen et al.
patent: 4929349 (1990-05-01), Beckman

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