A traditionalflocculants in wastewater treatment problem Flocculants currently used are inorganic and organic two categories, of which the most widely used inorganic poly aluminum chloride and organic polyacrylamide application. Although these flocculant to meet the industrial requirements, or more expensive (domestic polyacrylamide reached 60,000 yuan / t), or use a large number of (inorganic flocculants per cubic meter capacity number g), an increase of enterprises economic burden and, more importantly, the extensive use of these flocculant, causing environmental pollution and endanger human health. According to the literature, when the aluminum content in the water is higher than 0.2-0.5mg/dm3 3 salmon can be lethal. The sludge generated by the aluminum salt flocculation method is widely used in agriculture, leading to elevated aluminum content of the soil, plant aluminum victims, thus affecting the normal growth of plants, and even death, accompanied by these crops into the food chain also affect the health of the human body. Clinical aluminum poisoning aluminum encephalopathy, aluminum bone disease and aluminum anemia, senile dementia that is one of the aluminum encephalopathy. Molysite corrosive effect on metal, can also result in treated water with colors and high concentrations of iron have an adverse effect on human health and ecological environment. Widely used since the 1960s, synthetic organic polymer flocculants in wastewater treatment and sludge conditioning more polyacrylamide with strong nerves, but the monomers for the synthesis of these polymers toxicity, but also a strong carcinogenicity, makes provision for its use. In short, the traditional flocculants have the processing efficiency is not high, consuming large and secondary pollution problems, which need to find a more economic, reasonable way of sewage treatment. In recent years, use of MBF sewage treatment method more and more attention at home and abroad.