This paper introduced that waste salt particles were turned into qualified salt products through the process of ignition,dissolution,reaction,filtration,distillation,crystallization,filtration and drying.

The salt gypsum which is residue from sea salt industry was used as additive of silicate cement.

As much as 4 milion tones of strontium ore waste slag is emissioned in our country each year,because it is not to be used effectively,destroying our environment seriously and occupying a great deal of land resources.

Study on the recovery of waste residue of tribasic lead sulfate;

Study on the leaching toxicity and safe disposal of manganese sulphate waste residue;

Study on the extraction procedure toxicity and leaching property of manganese sulfate waste residue;

Improvement of Determination Method of Pb,Cr,Ba and As in Waste Residue of Printing Note Factory;

The paper summarizes the treatment methods of overhaul waste residues in tanks generated in the production process of electrolytic aluminum plant and makes a detail analysis on causes of the overhaul waste residues,environmental effects,transportation mode,selection of slag yard site,stockpiling method and recycling of waster residues for reuse and so forth.

Physicochemical analysis,leaching toxicity test and biotoxicity tests were used to investigate the leaching toxicity and biotoxicity of waste residues from MoO3 production under simulated acid rain conditions.

The paper summarizes the treatment methods of overhaul waste residues in tanks generated in the production process of electrolytic aluminum plant and makes a detail analysis on causes of the overhaul waste residues, environmental effects, transportation mode, selection of slag yard site, stockpiling method and recycling of waster residues for reuse and so forth.