摘要
为研究热酸解提油废水替代自来水作为配料用水的可行性,以细胞干重为主要指标,考察了热酸解提油废水回用比例对异养小球藻生长的影响。结果表明,热酸解提油废水的回用比例为5%、10%、15%、20%时,发酵周期与对照组一致(5 d),藻细胞干重均高于或接近对照组(10.88 g/L),分别为12.02、11.83、11.58、10.43g/L,分别为对照组的110.48%、108.73%、106.43%和95.86%。当热酸解提油废水回用比例进一步提升至30%、40%、60%时,藻细胞干重将显著下降,分别为对照组的63.79%、44.12%和10.20%。热酸解提油废水中,大量的盐分及残余的萃取剂可能是主要的潜在抑制物。
The purpose of this study is to examine feasibility of replacing tap water with wastewater from the pyrolysis oil extraction as batching water.Using single factor analysis method and cell dry weight as the main index,the effects of applying different ratios of pyrolysis oil extraction wastewater in the media on the heterotrophic chlorella’s growth rate,and media’s p H and glucose content changes were investigated.The results showed that when reuse ratio of pyrolysis oil extraction wastewater was 10%,the growth rate remained the same as that of the control group(5 days),and the dry mass of algae reached 11.83 g/L,which was 108.73%of the control group.The pH change was consistent with the control group,which indicated that the reuse of extraction wastewater did not affect the main components of the medium,but had positive influence on the algae growth.The higher reuse ratio of the extraction wastewater,the greater positive effect on the glucose absorption and utilization rate.In conclusion,reuse of thermal acid wastewater may improve the fermentation efficiency,but when the reuse ratio was too big,a large number of salts and residual extractants would reduce the fermentation efficiency.
作者
毕生雷
王林风
赵明星
刘钺
乔建援
郑彬
BI Shenglei;WANG Linfeng;ZHAO Mingxing;LIU Yue;QIAO Jianyuan;ZHENG Bin(State Key Laboratory of Motor Vehicle Biofuel Technology,Henan Tianguan Group Co.Ltd.,Nanyang 473000,China;School of Environment and Civil Engineering,Jiangnan University,Wuxi 214122,China)
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2019年第23期222-226,共5页
Food and Fermentation Industries
基金
水体污染控制与治理科技重大专项(2017ZX07203-001)
河南省科技攻关技术(162102310259)
关键词
异养小球藻
废水回用
发酵
热酸解
提油废水
Heterotrophic chlorella
wastewater reuse
fermentation
heating acidolysis
oil extraction wastewater
