微生物絮凝剂处理模拟乳品废水及蛋白回收的研究  

Treatment of Simulated Dairy Wastewater by Microbial Flocculant for Protein Recovery

作　　者：雷志斌 李家玉 谭有将 LEI Zhibin;LI Jiayu;TAN Youjiang(Guangdong Shunde Industry Design Institute,Foshan Guangdong 528311,China;Guangdong Devocean Medical Instrument Co.,Ltd,Foshan Guangdong 528311,China)

机构地区：[1]广东顺德工业设计研究院,广东佛山528311 [2]广东丁沃生医疗器械有限公司,广东佛山528311

出　　处：《顺德职业技术学院学报》2018年第4期1-4,13,共5页Journal of Shunde Polytechnic

摘　　要：采用微生物絮凝剂(MBF)进行模拟乳品废水处理和蛋白回收的试验研究。分析研究了搅拌程序、MBF投加量、CaCl_2投加量、加碱量、加碱的顺序对模拟乳品废水(COD为1 260 mg/L)的絮凝沉淀效果。结果表明:对于1 L的模拟乳品废水,最佳的絮凝方式为快搅拌400 rpm(3 min),慢搅拌150 rpm(2 min),慢搅拌50 rpm(10 min),静置(15 min);其中,在快搅拌启动时先投MBF 4 mL,再投3 mL的10%CaCl_2,快搅拌1 min时投5 mL的0.1 N NaOH。在最佳的絮凝方式处理下,原水浊度去除效率达95.86%,原水COD去除效率达71.03%,污泥中蛋白质回收率为76.4%,脂类回收率为84.9%,糖类回收率为14.8%。证明微生物絮凝剂能有效处理废水并回收大部分的蛋白质和脂类。The objective of this study was to evaluate the applicability of microbial flocculant in flocculation process for simulated dairy wastewater （1 L）,and the possibility of protein recovery.The precipitating effects of the simulated dairy wastewater were tested by using different mixing process,the dosage of MBF,CaCl2 and NaOH,and the order of adding NaOH.The optimum conditions defined by analysis of the values of turbidity removal and dry weight of sludge were as follows：Fast mixing process was 400 rpm for 4 mins,slow mixing process was 150 rpm for 2 mins,and static state for 10 mins;when the fast mixing process started,the optimal dosage was MBF 4 mL first,10% CaCl2 3 mL next,and 0.1 N NaOH 5 mL 1 min later.According to the flocculation,turbidity removal and COD removal of treated effluent were 95.86% and 71.03%.Recovery rate of protein,lipid and saccharides of the sludge were 76.4%,84.9% and 14.8%.It is efficient to recover most of the lipid and saccharides of the simulated dairy wastewater.

关 键 词：微生物絮凝剂 模拟乳品废水 絮凝技术 蛋白回收 

分 类 号：X703.5[环境科学与工程—环境工程]