DF-610 is a proprietary blend of an aqueous solution of sodium dimethyldithiocarbamate ((CH3)2NCS2Na) and cationic coagulant.

It is effective in precipitating low concentrations of metal ions from industrial aqueous effluents.

DF-610 is recommended as a treatment chemical for effluents containing 1 to 500 ppm total metal ions. It should also be considered for batch treatment of concentrates with any metal concentration.

Depending on the specific application, DF-610 can remove the metals to below 0.1 ppm. DF-610 is extremely effective in precipitating copper even in solutions containing complexed or chelated copper. It is also effective on other metals including cadmium, chromium (+3), gold, iron, magnesium, mercury, nickel, silver and zinc. DF-610 is not effective for removal of aluminum, chrome(+6) and molybdenum.

The precipitation reaction is: 2[(CH₃)₂NCS_2-Na⁺]+ M⁺² ------> 2[(CH₃)₂NCS_2-]M⁺² + 2Na⁺

Applications

The amount of DF-610 that is needed varies for each metal and each waste stream. For solutions containing mixed metals, the DF-610 dosage must be added for each metal. DF-610 is effective over a wide pH range (4.0 to 11.0). Laboratory evaluation is recommended to determine the optimum condition for the use of the DF-610. Duraflow will gladly provide onsite technical support to assist with the treatability study.