摘要
利用混合废水耦合微藻培养系统,研究了4种小球藻的生长变化和废水净化能力及影响机制,并对其产生的色素、油脂等高附加值产物进行了测定。结果表明:4种小球藻对单一豆制品原水、奶牛场乳制品原水中的营养物质去除效果不明显;但在混合液耦合微藻系统中,其净化效果显著提高。当豆制品废水、奶牛场乳制品废水体积比为1∶1时,小球藻净化废水中TN、TP的能力最强,并有较高的COD净化能力,TN去除率达到80.3%,TP去除率达到92.41%~95.48%,COD最大去除量为6 555.5 mg/L;其中小球藻UTEX1602的水质净化能力最强,其产生的高附加值产物最多:叶绿素a达70.83 mg/L、碳水化合物达271.57 mg/L、多糖达117 mg/L、蛋白质超出其他比例混合废水的6~7.5倍、油脂富集能力也优于其他藻种。该研究可为高附加值产品生产及工业废水净化提供参考。
The purification capability of four types of Chlorella to the wastewater as well as their influence mechanisms were investigated by utilizing a mixed wastewater coupling microalgae culture system. The high value-added products such as pigments and lipids produced in the process were examined. The results revealed that the selected four types of Chlorella had no obvious effect on nutrient removal in raw water of single soybean products or dairy products. However,in the mixed liquid coupling microalgae cultivate system,the purification effect was improved remarkably. When mixed volume ratio of single soybean products wastewater to dairy products wastewater was 1∶1,the Chlorella sp. had the strongest ability to remove TN and TP,and simultaneously exhibited good performance in removing COD as well. By this ratio,TN removal efficiency could reach 80.3%,TP removal efficiency was between92.41%-95.48% and 6 555.5 mg/L of COD was removed. UTEX1602 had the best water purification capability and the high value products produced by it were more outstanding:the production of chlorophyll a reached 70.83 mg/L,the carbohydrate reaching 271.57 mg/L and polysaccharides up to 117 mg/L,the protein 6-7.5 times higher than other ratios and it exhibited the best lipids accumulation ability. This research can obtain additional products with higher utilization value and provide a scientific reference for the industrial wastewater purification.
作者
李冰
石岩
吴迪
李妍
LI Bing;SHI Yan;WU Di;LI Yan(The Institute of Agriculture Resources and Environmental Sciences,Tianjin Academy of Agricultural Sciences,Tianjin 300022,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2022年第3期114-122,共9页
Industrial Water Treatment
基金
天津市农业科学院青年科研人员创新研究与实验项目(201919)
国家重点研发计划项目子课题(2017YFD0801404-1)。
关键词
混合废水
耦合微藻培养
小球藻
水质净化
生物量
高附加值产品
mixed wastewater
coupling microalgae culture system
Chlorella sp.
water purification
biomass
high value-added products
