Method for the purification of sewage waters

Details Method for the purification of sewage waters Method for the purification of sewage waters

1987-05-26

1988-12-27

Wyse, Tom

Liquid purification or separation

Processes

Treatment by living organism

210605, 210617, 210630, 210631, 210903, C02F 330, C02F 332

Patent

active

047939290

ABSTRACT:
With the method for the purification of sewage waters, in a first purification stage favorable conditions (pH, suspended matter) for the growth of ubiquiteous nitric bacteria are adjusted, whereby the loads of ammonia are to the major extent converted to nitrate. In a subsequent second purification stage in the form of a fixed mineral bed planted with emersed helophytes, the nitrate is reduced to nitrogen, and phosphate, sulfur, heavy metals and refractory carbon compounds are eliminated.

REFERENCES:
patent: 3701727 (1972-10-01), Kormonik
patent: 3900394 (1975-08-01), Rongred
patent: 4277341 (1981-07-01), Wise et al.
patent: 4333837 (1982-06-01), Plosz et al.
patent: 4415450 (1983-11-01), Wolverton
patent: 4548712 (1985-10-01), Reid

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