培养条件对糖蜜发酵废水中螺旋藻的生长和废水处理效果的影响

探讨糖厂酒精车间发酵废液（ＣＯＤ〉４０００ｍｇ／ｌ）的一种生物处理方法。经石灰絮凝，Ｚ氏培养基系列稀释的４００ｍｌ糖蜜发酵酒精废水，在一定的光强下通气培养螺旋藻，约两周后可获得最高生物量达１ｇ干重／ｌ，叶绿素达３．５６ｍｇ／ｌ，同时糖分去除率达８１％，ＣＯＤ去除率达７４．３％。实验表明，螺旋藻在５０％稀释度废水中的生理活性与１００％Ｚ氏培养基中的十分接近。

Effect of Culture Conditions on the Growth of Spirulina platensis and Treatment Efficiency of Molasses-Fermented Wastewater

A biological treatment method for the wastewater (COD>4000mg/l) from fermented liquor of molasses for alcohol in sugar mill was discussed. Spirulina platensis was cultivated in 400ml wastewater pretreated by lime nocculation and diluted with Zarrouk medium,under illumination of certain light intensity and aeration. The highest yield of Spirulina biomass was obtained at lg dry wt. / 1 after 2 weeks, the concentration of chlorophylla was high up to 3. 56mg/L, meanwhile total sugar removal and total COD removal from medium were obtained at 81. 0% and 74. 3% respectively. It was identified from experiments that the physiological activity of Spirulina in 50% diluted wastewater was very sindlar with that of in 100% Zarrouk medium.