METHOD OF TREATMENT OF SLIME LIGNIN Russian patent published in 1999 - IPC

Abstract RU 2129533 C1

FIELD: treatment of sewage water sediments, in particular, slime lignin of wood-pulp and paper industry. SUBSTANCE: method includes treatment of slime lignin with flocculant, water-repelling agent, and dewatering. Water-repelling agent is used in the form of ammonium salt and octylbetathiopropionic acid. Due to increased water loss of sediments and reduced dwell time of sediments on dewatering stage efficiency of vacuum filters, filter presses, flotation machines increases. EFFECT: higher efficiency. 2 tbl

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RU 2 129 533 C1

Authors

Fomina E.Ju.

Semenova V.D.

Leonov S.B.

Trofimov B.A.

Vavilova A.N.

Dates

1999-04-27—Published

1996-11-28—Filed