A new biological degumming technology combining liquid and wet fermentation was used for de-gumming ramie.This method was achieved by weighing the raw ramie,loading it into hanging racks,liquid fermentation of the raw ramie fermentation tank,and wet fermentation of the raw ramie in cages.Com-pared with the existing method,it made the process of ramie degumming shorter,the fermentation effect more stable.The performance of ramie fibres obtained by this method met the requirements for the produc-tion of dried ramie,and the average strength of dried ramie single fibers obtained was 5.29 cN/dtex,the aver-age residual glue rate was 2.34％,and the average oil content was 0.61％,which had reached the first grade with reference to the GB/T 20793-2015 Degummiedramie.In the discharged wastewater,CODCr≤60 mg/L,pH value of wastewater was between 7-7.5,water colour was 20-30,suspended solids was 15-20 mg/L,ammonia and nitrogen(NH3-N)concentration of 2-3 mg/L,which met the national standard of special dis-charge limits for water pollutants.
关键词
苎麻/脱胶/发酵/残胶率/工艺流程
Key words
ramie/degumming/fermentation/residual gum rate/process and procedure
维普
万方数据