自然选育酵母菌对不同废水处理及资源化研究

从色拉油加工废水,味精废水、印染废水、钻井废水等4种特性各异的废水中筛选出酵母菌,并根据形态特征和生理生化特征对筛选到的12种酵母菌（包括2种耐氨酵母）进行了鉴定。结果表明：酵母菌处理工艺对色拉油加工废水和味精废水这两类高浓度有机废水具有较好的处理效率,如前者的TOC和后者的COD的去除率均在85%以上。但对人工合成物质含量较高的印染废水和钻井废水处理效果较差。这一结果可能与酵母菌原来所处的环境条件有关。

Study on Treatment of Different Wastewater by Natural Screen Yeasts and Resources Reuse

Yeasts were screened from soil samples contaminated by 4 kinds of wastewater, namely salad oil manufacturing wastewater (SOMW), monosodium glutamate wastewater (MGW), dyeing wastewater (DYW), and drilling wastewater (DW) respectively for the purpose of wastewater treatment. Identification has been conducted according to the morphological and physiological characteristics of strains,and a total of 12 yeast species including two species of ammonium-tolerant ones were obtained. The mixtures of screened yeast strains were respectively applied to treat the 4 kinds of wastewater which difficult to be treated by conventional biological methods. The TOC removal for SOMW and COD removal for MGW were above 85%. The TOC removals for DYW and DW were much lower.perhaps due to the significant existence of synthesized chemicals. The difference was perhaps caused by the original environmental conditions the yeasts lived.