基于MUASB处理马铃薯深加工废液的试验研究

试验研究了在改装UASB(MUASB)装置中培养好氧颗粒污泥及其处理生活污水和高浓度马铃薯深加工废液的效果。试验结果表明:可以在4 d内快速培养出好氧颗粒污泥。成熟的颗粒污泥平均直径达2 mm。当马铃薯深加工废液浓度ρ(COD)、ρ(NH 4+-N)、ρ(TP)平均分别为12 817.16,106.10,26.37 mg/L时,处理效果分别超过64%、63%和67%。利用共聚焦激光扫描显微镜观测颗粒污泥,虽然球菌主要形成了一个相对凝结的区域,但是在颗粒污泥的边缘区域出现许多丝状菌。α多糖主要分布在颗粒的核心。在颗粒中还发现少量的β多糖和无生命的细胞。

THE EXPERIMENT ON TREATMENT OF POTATO STARCH WASTEWATER BASED ON MUASB

Formation and performances of aerobic granule sludge were investigated in a modified UASB(MUASB) reactor treating both landfill leachate and domestic wastewaters.Results showed that granules could be formed from flocculating sludge in MUASB within 4 d.Granules had an average diameter of 2 mm during steady operation.When potato starch waste water’s COD,ammonia nitrogen and TP was 12 817.16,106.10 and 26.37 mg/L respectively,their treating effectiveness was over 64%,63% and 67% respectively.As for mature granules,confocal laser scanning microscopy(CLSM) observation revealed that a lot of filamentous bacteria were presented in the fringe region,while cocci were predominant and formed a relatively condensed region in the granule interior.The a-polysaccharides were mainly distributed in the core of granules.Few β-polysaccharides and dead cells were detected in the granules.