In view of the low sedimentation ratio in the neutralization pre-treatment of sapogenin wastewater,the improving effect of PAM on sedimentation of the neuralization solution was studied through the test.

This paper introduces the technology of two-phase anaerobic digestion with three stages applied in the demonstration project of sapogenin wastewater treatment.

According to the characteristics of wastewater from the process of Dioscorea zingiberensis C.

A new process,taking the residue of yam diosgenin as the raw material preparation activated carbons and moulding coal,the results show that,the activated carbons adsorption performance and the decolorization strength are better than activated carbon of the commercial pellet,prepareing the moulding coal are feasible.

Activated carbon was prepared using the residue in yam diosgenin production as raw material and ZnCl_2 as activator.

The current research progress on synthesis for the lignin-phenolic resin were reviewed with lignin which was from yam diosgenin waste,and including synthesis method of yam lignin-phenolic resin and modified yam lignin-phenolic resin.

Turmeric industry wastewater comes from the process of producing turmeric element, which is composed of waste mixture liquid of distillation and hydrolyzing (under acid or basic condition) and washing wastewater.

Study on treatment of diosgenin wastewater by microorganism micro electrolytic;