【摘要】 在连续光照强度为3 500 lx,温度为(25±2)℃的实验条件下,以硝酸钠、硫酸铵、磷酸二氢钾为氮磷营养源,配制1 800 mL模拟废水,其总磷(TP)、总氮(TN)、氨氮(NH4+-N)的初始浓度分别为10.57、36.56、19.40 mg/L,以立体弹性聚氯乙烯为载体,鞘藻(Oedogonium sp.)、水华鱼腥藻(Anabaena flos-aquae)、蛋白核小球藻(Chlorella pyrenoidosa)、斜生栅藻(Scenedesmus obliquus)、水网藻(Hydrodictyon reticulatum)、阿氏颤藻(Oscillatoria agardhii)等为实验藻种,进行了为期6 d的藻类膜脱氮除磷实验。结果表明:在6种实验藻种中,蛋白核小球藻最适合作为脱氮除磷废水处理的挂膜藻种,其藻类膜的TP、TN、NH4+-N去除率最高,分别为87.88%、87.27%、89.25%;藻类膜脱氮除磷能力与其叶绿素含量无正相关性,蛋白核小球藻藻类膜的叶绿素含量最小,为0.065 4 mg/L,水华鱼腥藻藻类膜的叶绿素含量最大,为0.245 0 mg/L。更多还原

【Abstract】 The removal effects of nitrogen and phosphorus from wastewater were investigated with six species of algal biofilm(Oedogonium sp.,Anabaena flos-aquae,Chlorella pyrenoidosa,Scenedesmus obliqnus,Hydrodictyon reticulatum,Oscillatoria agardhii) under continuous light of 3 500 lx,temperature of(25 ± 2) ℃ and PVC as the carrier.The volume of waste water was 1 800 mL,and regarded NaNO3,(NH4) 2SO4,KH2PO4 as nitrogen and phosphorus nutrition,the initial concentration of total phosphorus(TP),total nitrogen(TN),ammonia nitrogen(NH4+-N) reached 10.57,36.56,19.40 mg/L,respectively.The results showed that Chlorella pyrenoidosa was most suited to form algae biofilm,and the removal efficiencies of TP,TN,NH4+-N reached 87.88%,87.27%,89.25%,respectively.There were no positive correlation between removal efficiencies of nitrogen and phosphorus and chlorphyll content of biofilm,chlorphyll content of Chlorella pyrenoidosa was lowest,reaching 0.065 4 mg/L,and Anabaena flos-aquae was highest,reaching 0.245 0 mg/L.更多还原