METHOD OF SEWAGE WATERS PURIFICATION FROM UREA Russian patent published in 2000 - IPC

Abstract RU 2160710 C1

FIELD: sewage waters treatment; applicable in chemical industry for purification of sewage waters of urea production process. SUBSTANCE: method consists in ozonization of sewage waters after hydrolysis and desorption. Ozonization is effected at pH 6.5-8.5 and temperature of 20- 25 C. Ozone is taken in amount of 2-7 weight units per weight unit of urea. EFFECT: elimination of sewage waters of enterprise producing urea by their treatment to quality of chemically treated water, for instance, for supply of medium pressure boilers with P=4 MPa (40kgf.sq.cm).

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RU 2 160 710 C1

Authors

Novikov B.V.

Lapin V.A.

Iogann L.A.

Kapitula I.I.

Savenkov A.V.

Pushchin S.I.

Dates

2000-12-20—Published

2000-05-17—Filed