预发酵淀粉废水生产微生物絮凝剂

Production of Bio-flocculant by Using Pre-fermentation Starch Wastewater

利用淀粉废水生产微生物絮凝剂,确定淀粉废水的预发酵方法,并且通过单因素试验确定最适碳源浓度和氮源:碳源(淀粉废水COD)浓度为12000 mg/L,氮源为尿素。同时对其絮凝条件进行研究,确定最佳絮凝条件是:在pH值为7.0,高岭土浓度为5 g/L的100 mL悬浊液中絮凝剂投加量为2.0 mL,CaCl2投加量为2.0 mL。

This paper used the starch wastewater to produce bio - flocculant, and studied the pre - fermentation methods for the starch wastewater, and figured out the optimal carbon source and nitrogen source with single factor test：COD of the starch wastewater is 12 000 mg/L,nitrogen source is urea. At the same time, we have studied the conditions of flocculation and found the best one： dosage of flocculant and CaC12 is 2.0 mL and 2.0 mL respectively in the suspension of 100 mL that the pH is 7.0,and the Kleit concentration is 5 g/L.