Industrial wastewater pollution is an increasing problem. The wastewater infiltrated cobalt is a key to purify wastewater because it is seriously hazardous and hard to treat. Traditional management method of heavy metals in industrial wastewater is difficult to apply. To seek for "green ecological" feasible approaches of industrial wastewater treatment, this paper studied the effect of industrial wastewater containing cobalt on the growth and hydrocarbon accumulation of Botryococcus braunii SAG 807-1 with biofilm attached cultivation. The research results obtained were as follows:B.braunii with biofilm attached cultivation could treat industrial wastewater, and 4.5 mg·L-1 cobalt could accelerate the accumulation of hydrocarbon while having little influence on the growth of B.braunii, the ability of B.braunii with biofilm attached cultivation to remove Co2+ from industrial wastewater was 1473.9 μmol·g-1, which was much higher than the report of P. littoralis culture. Through the study in this paper, the theoretical basis for the coupling of production of green high energy fuel hydrocarbon and industrial wastewater treatment was established.
Keywords: Botryococcus braunii; biofilm attached cultivation; coupled; hydrocarbon; industrial wastewater containing cobalt.