The microbial protein produced in reeling wastewater treatment process was hydrolysis treated to prepare compound amino acid. The optimal treatment conditions of traditional acid hydrolysis,microwave hydrolysis and ultrasonic hydrolysis were obtained through orthogonal experiments.and the performance of different hydrolysis method was compared with yield of compound amino acid as indicator. The results indicated that the optimum conditions for traditional acid hydrolysis were solid-to-liquid ratio of 5 ? L.sulfuric acid concentration of 50% ,100 'C and hydrolysis for 2. 0 h. The optimum conditions for ultrasonic hydrolysis were sulfuric acid concentration of 40 %, ultrasonic irrada-tion for 40 min and hydrolysis for 0. 5 h. The optimum conditions for microwave hydrolysis were 350 W, solid-to-liquid ratio of 4 :1 .sulfuric acid concentration of 30% and hydrolysis for 0. 6 h. Compared with the traditional acid hydrolysis, microwave hydrolysis and ultrasonic hydrolysis could reduce the acid consumption and equipment corrosion, decrease the processing time and cut down the cost.so they would have good application prospect in the future.%以缫丝废水处理过程中产生的微生物蛋白为原料,采用正交实验分析了采用酸水解、超声波水解、微波水解制备复合氨基酸的最佳工艺条件,并对比了最佳工艺条件下的水解效果.结果表明,酸水解的最佳工艺条件是水解时间2.Oh、固液比(体积比,下同)5∶1、硫酸质量分数50％、水解温度100℃,超声波水解的最佳工艺条件是水解时间0.5h、固液比4∶1、硫酸质量分数40％、超声时间40 min,微波水解的最佳工艺条件是水解时间0.6h、固液比4∶1、硫酸质量分数30％、微波功率350W；与酸水解相比,超声波水解和微波水解能缩短水解时间,降低耗酸量,减少设备腐蚀,降低生产成本,因此具有良好的应用前景.
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