LIQUID PROCESSING APPARATUS, ITS CONTINUOUS LIQUID PROCESSING APPARATUS AND ITS CONTINUOUS LIQUID PROCESSING METHOD

WIPO Patent Application WO/1990/011813

A1

This invention relates to an apparatus and method for processing a liquid containing coarse dust, other floating matters (inclusive oil), sand and soil and other solid matters, separates and removes them and discharges clean water having predetermined water quality. Furthermore, the present invention relates to an apparatus and method capable of removing "more efficiently" large quantities of floating matters and sand and soil from a liquid containing large quantities of floating matters and sand and soil such as heavy rain water. In the apparatus, a rotary cylinder for generating compulsively and positively a whirling flow inside a processing tank is combined with a rotary separation tank and moreover, a floating matter stay is formed on the rotary cylinder itself or on the wall of the rotary separation tank. Therefore, floating matters and organic matters can be removed highly efficiently while carried on a whirling surface flow and sand and soil are sedimented to the bottom of the rotary separation tank by the whirling flow which is generated compulsively and positively, and can be removed highly efficiently.

NISIDA TETSUO (JP)

PCT/JP1989/001043

October 18, 1990

October 11, 1989

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NISIDA TETSUO (JP)

B01D21/26; B01D21/00; (IPC1-7): B01D21/02; B01D21/26; C02F1/52

JPS62171720A	1987-07-28
JPS6116044Y2	1986-05-17
JPS5747043Y2	1982-10-16
JPS45829B1	1970-01-12
JPS5515243B2	1980-04-22

See also references of EP 0427855A4

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