EFFLUENT TREATMENT WITH HYDROTALCITE

摘要

PCT No. PCT/EP94/04177 Sec. 371 Date Aug. 19, 1996 Sec. 102(e) Date Aug. 19, 1996 PCT Filed Dec. 15, 1994 PCT Pub. No. WO95/17350 PCT Pub. Date Jun. 29, 1995Effluents containing residual dyes are contacted with an effective amount of hydrotalcite-like material together with an effective amount of a magnesium salt or a mixture of magnesium salts, the weight ratio (on dry basis) of hydrotalcite-like material to magnesium salt being in the range of 20:1 to 1:20. Residual dyes are removed from effluents.