摘要
以酵母菌作为特定微生物,采用生物接触氧化工艺处理皂素生产废水,对其工艺参数进行了优选 研究。结果表明,生物接触氧化工艺中以酵母菌为优势菌群,当温度为28-30 C,进水化学需氧量(COD)为2 710 -9 200 mg/L,pH值为4.5-5.5,溶解氧为4.5 mg/L,水力停留时间(HRT)为12 h时,COD去除率超过70%, 反应出水回收的酵母干菌稳定在8.3g/L以上,且产量随进水有机物浓度升高而上升。
The yeast strains were inoculated to a biological contact oxidation reactor,which was used to treat the Diosgenin production wastewater. Under the normal temperature (28 ~30℃), the COD load ranges from pH 4. 5--5. 5,HRT=12 h,DO=4. 5 mg/L,and the the removal rate was over 70%. The effluent waste water contained high concentration of yeast bodies ,whose content increased with the organic concentration (COD) of the waste water.
出处
《西北农林科技大学学报(自然科学版)》
CSCD
北大核心
2005年第12期112-114,共3页
Journal of Northwest A&F University(Natural Science Edition)
基金
陕西理工学院科研基金项目(SLGQD0405)
关键词
酵母菌
生物接触氧化法
皂素生产废水
废水处理
yeast
bio-contact oxidation technology
waste water from the Diosgenin production
diswaste water treatment