基于污水/废气同步处理的混养系统构建及能源微藻Chlorella vulgaris培养研究

The synchronous processing system building based on sewage/waste gas mixture and energy micro algae Chorella vulgaris cultivation

微藻生物能源因其污染小、藻细胞生长快、不与农产品争地等优点而受到广泛关注,但是其高昂的培养成本一直限制了其应用。本研究以小球藻Chlorella vulgaris为培养对象,利用模拟烟道气和生活污水进行微藻培养,考察了该过程对污染物的去除效率以及影响微藻生长和油脂积累的工艺因素。结果表明:Chorella vulgaris可以在模拟烟道气和污水条件下生长并完成油脂积累。在细胞密度0.60g/L条件下,此系统可使污水中COD、总氮和总磷分别从400mg/L、15mg/L、5mg/L下降到65mg/L、7.9mg/L和3.9mg/L,可以达标排放,同时NO含量从400mL/m下降到150mL/m,对烟道气减排和联合处理也具有重要价值。

Micro algae biofuels began to attract great attention for its little pollution,fast growth and no competion in soil with agricultural products,but its high cultivation cost limited in application.Chlorella vulgaris was cultivated with simulated flue gas and domestic wastewater,the factor that influencing contaminant removal efficiency and micro algae growth and oil accumulation was investigated.The result showed that:under the cell density of 0.60g/L,the wastewater-gas system worked steadily.The COD,TN and TP in the wastewater fell from 400mg/L,15mg/L,5mg/L to 65mg/L,7.9mg/L,3.9mg/L,respectively.At the same time the concentration of NO decreased from 400ml/m to 150ml/m which showed great significance upon the flue gas reduction and joint treatment.