鱼糜加工废水中蛋白质回收工艺的优化

Study on Protein Recovery Process Optimization of Surimi Processing Wastewater

针对目前鱼糜加工企业排放废水中含有的大量蛋白质,通过选取一种絮凝剂,以其添加量、絮凝温度、絮凝时间、絮凝pH值进行单因素实验,然后用Design-Expert软件的Box-Behnken中心组合设计进行四因素三水平响应面实验。结果表明:三氯化铁添加量0.13 g/L,絮凝温度18.44℃,时间5 h,pH 5.44,此时蛋白质回收率最高,达86.94%。该法具有蛋白质回收率高,回收蛋白质安全卫生,操作简便,成本低等特点。

As to a large number of proteins from discharge wastewater of Surimi processing enlerprises,A single factor experiment about the dosage,temperature, time, pH can be operated by selecting a flocculant. Then Design-Expert software is a experimental containing four factors and three levels.The resuh shows that：the optimal recovery process is adding the amount uf ferric chloride 0.13 g/L,the flocculation temperature is 18.44 ℃,the time is 5 h,the pH is 5.44. At this point,recovery rate achieves to 89.94%. The method has the features with a high protein recoveries, the safety and heahh of the recovery protein ,easy operation ,low cost,etc.