L-lactic acid production wastewater with highconcentration organic pollutants and ammonia nitrogen is a kind of refractory organic wastewater.

This paper studies on the effect of the techniques of sequencing batch reactor on the degradation effect of the organism according to lactic acid wastewater with high concentration of organism、 low pH as well as its variety of the salt.

Multi-internal-circle(MIC) anaerobic reactor which was self-designed and manufactured was applied to treat the citric acid wastewater.

Treatment of wastewater from DSD acid production by oxidation-microelectrolysis-air stripping process;

Pretreatment of wastewater from DSD acid production by dynamic mixing micro-aeration internal electrolysis process;

Study on catalyst of catalytic wet oxidation of sorbic acid industrial wastewater;