利用啤酒废水培养极大螺旋藻

Culture of Spirulina Maxima Using Brewery Wastewater

利用啤酒废水培养极大螺旋藻(Spirulina maxima)。研究了初始COD、DO、氮磷元素等培养条件对藻生物量(每mL培养液中极大螺旋藻的质量,以干重计)及废水水质的影响。实验结果表明:将废水稀释至COD=700 mg/L,控制DO=2.5 mg/L,并添加氮磷元素使废水的碳氮磷质量比为225∶15∶1,培养3 d,极大螺旋藻的藻生物量可达175.55 mg/L,即每吨啤酒废水可生产极大螺旋藻175.55 g;废水中COD,TN,NH3-N,NO3-,TP的去除率分别达到85.43%,94.54%,74.66%,94.53%,61.54%。利用啤酒废水培养螺旋藻在收获极大螺旋藻生物质的同时,还能对废水起到一定程度的净化作用。

The brewery wastewater was used to culture Spirulina maxima. The effects of initial COD, DO, nitrogen and phosphorus on algae biomass and wastewater quality were studied. When the wastewater COD is 700 mg/L, DO is 2.5 mg/L, the mass ratio of C to N to P is 225 ： 15 ： 1 and the culture time is 3 d, the algae biomass of Spirulina maxima is 175.55 mg/L. The removal rates of COD, TN, NH3-N, NO3, TP are 85.43%, 94.54%, 74.66%, 94.53%, 61.54% respectively. With the production of Spirulina maxima, the wastewater is purified.