Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1995-06-05
1997-03-25
Hruskoci, Peter A.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
95151, 95152, 95205, 95226, 210721, 210724, 210725, 210728, 210738, 210916, 210919, 210906, C02F 152
Patent
active
056141025
ABSTRACT:
A sewage purification method which includes a first step in which at least two kinds of flocculants are introduced in sewage for stirring and mixing therewith so as to float and settle inorganic and organic materials. The first step is sequentially repeated more than one time. Next, at least three kinds of flocculants are introduced into the supernatant obtained in the first step for stirring and mixing therewith so as to further float and settle remaining inorganic and organic materials. At least one of the first and second steps is sequentially repeated more than one time. In the above way, middle water, drinking water and super-pure water can be obtained from sewage. Purification of exhaust gas is also possible by introducing such exhaust gas in one of the above steps.
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