Method for recycling formalin

Details Method for recycling formalin Method for recycling formalin

1996-09-24

1997-11-11

Drodge, Joseph W.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

27 11, 95273, 210651, 210739, 210806, 422 36, B01D 6502, B01D 6500, A01N 100

Patent

active

056859872

ABSTRACT:
A formalin fluid recycler has a combination triple pipe nozzle for introducing dirty fluid into the recycler and for expelling concentrate and permeate fluid therefrom. Dirty fluid is pumped through a strainer, filtration module and charcoal filter to purify and clarify the dirty fluid. The formalin fluid can be recirculated in the system via the nozzle or be directed to a clean receptacle. Dirty formalin fluid is further cleansed by Ozone and ultraviolet light. Percent concentration and pH level of clean recycled formalin fluid is adjusted outside of the main recycling loop. Cleaning and preservative solutions are circulated through the recycler when necessary.

REFERENCES:
patent: 3938287 (1976-02-01), Gauchard
patent: 4072610 (1978-02-01), Gow et al.
patent: 4342651 (1982-08-01), Ahrens
patent: 4610790 (1986-09-01), Reti et al.
patent: 4787980 (1988-11-01), Ackermann et al.
patent: 5078864 (1992-01-01), Whittier
patent: 5217622 (1993-06-01), Flores
patent: 5252304 (1993-10-01), Miyoshi
patent: 5512178 (1996-04-01), Dempo

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