| abstract |
A WASTE WATER EFFLUENT CONTAINING NITRILES AND CYANIDES IS TREATED BY PASSING THROUGH AN ACCLIMATED, ACTIVATED SLUDGE CONTAINING AT LEAST ONE MICROORGANISMS CAPABLE OF DEGRADING NITRILES AND CYANIDES SELECTED FROM THE GENERA ALCALIGENES AND ACHROMOBACTER, FOR EXAMPLE, ALCALIGENES VISCOLACTIS ATCC 21698 AND ACHROMOBACTER NITRILOCLASTERS ATCC 21697 THEREBY TO PURIFY THE WASTE WATER EFFLUENT. THE WASTE WATER EFFLUENT CONTAINING 10 TO 50 P.P.M. OF CYANIDE AND 1,000 TO 2,500 P.P.M. OF COD (POTASSIUM DICHROMATE METHOD) CAN BE PURIFIED WITH A HIGH EFFICIENCY. |