Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1979-07-25
1981-07-28
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204152, 210706, C02F 146, C02F 152
Patent
active
042808863
ABSTRACT:
The present invention relates to a method for removing suspended matter, organic matter, foaming matter and nitrogen compounds in sewage and to an apparatus for the method.
The suspended matter and the organic matter are removed by means of first fine bubbles and the foaming matter is removed by means of second bubbles having a larger bubble average diameter. The sewage treated by the first and second bubbles passes through a bed of porous adsorbent polarized by the feed of current, so that nitrogen compounds and the organic matter remained in the sewage are adsorbed and removed. It is also provided with a step for removing the suspended matter and the organic matter remained in the sewage by means of third fine bubbles before transferring the sewage to the bed of adsorbent.
REFERENCES:
patent: 3616356 (1971-10-01), Roy
patent: 3664951 (1972-05-01), Armstrong
patent: 3684703 (1972-08-01), Marmo
patent: 3959131 (1976-05-01), Ramirez
Kaneko Toyohiko
Kubota Masayoshi
Sawa Toshio
Takahashi Sankichi
Beall, Jr. Thomas E.
Hitachi , Ltd.
Tufariello T. M.
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