First, when the production of corn starch, will produce a lot of waste water containing high concentrations of organic compounds and suspended solids. Corn starch production wastewater complex composition, the main organic pollutants containing starch (polysomes), protein and its degradation intermediates.

Second, mainly from corn starch wastewater soak, germ separation, washing and dewatering processes fiber. Corn starch production from seasonal effects, year-round production. Large water craft, usually 5-13m3 wastewater / t corn, so corn starch production mainly for water consumption and low starch extracted features, resulting in a larger amount of corn starch wastewater generated in the production process, contaminants high concentrations.