Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1978-08-21
1980-07-08
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 54, 210 82, C02B 120, C02C 502
Patent
active
042116503
ABSTRACT:
Dirty process water is collected from a process unit and introduced into a raw water holding tank. Water from the tank is passed at a uniform rate through a flotation cell where solids are frothed by flocculation and aeration and removed. The flocculating agent is a short chain cationic polymer. The water is then introduced into a treated water holding tank where it is withdrawn at a uniform rate and filtered to remove more solids. The filtered water is stored in a filtered water storage vessel for its use in the process facility. Heat exchange keeps the filtered water at required temperature. Water discharged from the system to a sanitary sewer may have various degrees of purity.
REFERENCES:
patent: 3171801 (1965-03-01), Rice et al.
patent: 3192155 (1965-06-01), Bready et al.
patent: 3321649 (1967-05-01), De Benedictis et al.
patent: 3764013 (1973-10-01), Eisenmann
patent: 3772190 (1973-11-01), Eisenmann
patent: 3841116 (1974-10-01), Klein et al.
Grieves et al., "Treating Laundry Wastes by Foam Separation", JWPCF, Mar. 1973, pp. 470-479. _
Hart Charles N.
Hruskoci Peter A.
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