生物蒸发处理冰淇淋生产废液的菌种筛选及应用研究  

Screening and application of bacteria for bio-evaporation process of waste liquid from ice cream production

作　　者：郑晓伟 郭栋 肖文敏 王海潮 刘丹 ZHENG Xiaowei;GUO Dong;XIAO Wenmin;WANG Haichao;LIU Dan(Institute of Resources and Environment,Beijing Academy of Science and Technology,Beijing 100089,China;College of Chemistry&Life Sciences,Chifeng University,Chifeng 024000,China)

机构地区：[1]北京市科学技术研究院资源环境研究所,北京100089 [2]赤峰学院化学与生命科学学院,内蒙古赤峰024000

出　　处：《工业水处理》2022年第9期141-148,共8页Industrial Water Treatment

基　　金：北京市科学技术研究院改革与发展专项(2021G-0003);赤峰学院服务赤峰市经济社会发展应用项目(cfxyfc201848);河北省重点研发计划项目(20327302D)。

摘　　要：冰淇淋生产废液具有高有机物含量、高含水率、高黏度、易生物降解的特性,使得其处理处置难度大、成本高。通过微生物筛选实验,获得了3株形态各异的单菌株,接种不同菌种的对比实验表明,添加Pichia cecembensis的生物蒸发处理发酵温度最高、升温最快。进一步开展不同处理负荷的对比实验,结果表明,在处理负荷为1.5 kg/批的条件下,生物蒸发处理7 d,累积减量率达99.9%,含水率基本稳定在60%~65%的区间范围内,处理负荷提高至2.0 kg/批,需采取驯化培养或增加投菌量等手段来实现生物蒸发的连续稳定运行。生物蒸发去除的水分经冷凝回收后,COD降至600 mg/L以下,可有效降低后续废水的处理难度和处理成本。Waste liquid from ice cream production has the characteristics of high organic content,high moisture content,high viscosity and easy biodegradation,which makes its treatment and disposal difficult and costly.Three single strains with different morphology were obtained by microbial screening experiment.The comparative experiment of inoculating different strains showed that the bio-evaporation treatment with Pichia cecembensis had the highest fermentation temperature and the fastest heating rate.Under the treatment load of 1.5 kg/batch,the reduction rates of bio-evaporation treatment for 7 days were 99.9%.The water content is basically stable in the range of 60%-65%.When the treatment load increased 2.0 kg/batch,the continuous and stable operation of biological evaporation needs to be realized by domesticating or incubating bacteria.After the water removed by bio-evaporation is condensed and recovered,the COD concentration was less than 600 mg/L,which can effectively reduce the difficulty and cost of subsequent wastewater treatment.

关 键 词：高浓度有机废液 生物蒸发 菌种筛选 

分 类 号：X703.1[环境科学与工程—环境工程]