Process for removing phosphorus from industrial waste water

Details Process for removing phosphorus from industrial waste water Process for removing phosphorus from industrial waste water

1985-11-15

1987-08-25

Hruskoci, Peter

Liquid purification or separation

Processes

Ion exchange or selective sorption

210721, 210737, 210748, 210760, 210906, C02F 152

Patent

active

046891544

ABSTRACT:
An improved process is described for removing phosphorus from industrial waste water by contacting the waste water with ozone to convert reduced or organic phosphates into ortho-phosphates, and precipitating the soluble ortho-phosphates by treatment with lime. The precipitated material can be filtered, and the filtrate treated with activated carbon to produce an effluent stream having low levels of phosphorus.
The process of this invention is particularly effective at low treatment temperatures, enabling efficient treatment of the waste water during periods of cold weather.

REFERENCES:
patent: 3876451 (1975-04-01), Zall
patent: 4230571 (1980-10-01), Dadd
patent: 4301014 (1981-11-01), Buckholtz et al.
patent: 4402833 (1983-09-01), Bennett et al.

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