小球藻对奶牛场沼液处理能力及生物质生产的探究

冯思然; 丰平仲; 朱顺妮; 王忠铭; 袁振宏

doi:10.11949/j.issn.0438-1157.20180739

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小球藻对奶牛场沼液处理能力及生物质生产的探究

能源和环境工程 | 更新时间：2020-06-24

- 小球藻对奶牛场沼液处理能力及生物质生产的探究
- Nutrient removal and biomass production from dairy farm liquid digestate treatment using microalga Chlorella vulgaris
- 化工学报 2019年70卷第1期页码：227-233
- 作者机构：
  
  1.中国科学院广州能源研究所，广东广州 510640
  2.中国科学院可再生能源重点实验室，广东广州 510640
  3.广东省新能源与可再生能源研究开发与应用重点实验室，广东广州 510640
  4.中国科学院大学，北京 100049
- 作者简介：
  
  冯思然(1993—)，男，硕士研究生，fengsr@ms.giec.ac.cn
  朱顺妮（1981—），女，副研究员，zhusn@ms.giec.ac.cn
- 基金信息：
  
  国家重点研发项目(2016YFB0601004);广东省自然科学基金研究团队项目(2016A030312007);广州市科技计划项目珠江科技新星专项(201610010155)
- DOI：10.11949/j.issn.0438-1157.20180739
  中图分类号： Q 938
- 收稿：2018-07-04，
  
  修回：2018-09-28，
  
  纸质出版：2019-01-05
- 稿件说明：
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冯思然, 丰平仲, 朱顺妮, 王忠铭, 袁振宏. 小球藻对奶牛场沼液处理能力及生物质生产的探究[J]. 化工学报, 2019, 70(1): 227-233

FENG Siran, FENG Pingzhong, ZHU Shunni, WANG Zhongming, YUAN Zhenhong. Nutrient removal and biomass production from dairy farm liquid digestate treatment using microalga Chlorella vulgaris[J]. CIESC Journal, 2019, 70(1): 227-233
冯思然, 丰平仲, 朱顺妮, 王忠铭, 袁振宏. 小球藻对奶牛场沼液处理能力及生物质生产的探究[J]. 化工学报, 2019, 70(1): 227-233 DOI： 10.11949/j.issn.0438-1157.20180739.

FENG Siran, FENG Pingzhong, ZHU Shunni, WANG Zhongming, YUAN Zhenhong. Nutrient removal and biomass production from dairy farm liquid digestate treatment using microalga Chlorella vulgaris[J]. CIESC Journal, 2019, 70(1): 227-233 DOI： 10.11949/j.issn.0438-1157.20180739.

摘要

为资源化处理奶牛场沼液、探究小球藻

Chlorella vulgaris

NIES-227对奶牛场沼液的处理能力以及生物质利用潜力，在柱式光生物反应器中利用小球藻处理沼液占比分别为25%、50%、75%和 100% 4种不同浓度的未灭菌污水。研究结果显示，各浓度污水中总氮、总磷和COD的去除率分别为36.0%～92.5%、42.8%～100%和6.9%～32.2%。在沼液占比为25%的污水中氮磷的去除率最高，氨氮、总氮和总磷的去除效率分别可达99.9%、91.0%和100%。微藻在低浓度沼液（25%～50%）中生长状态良好，在沼液占比为50%的污水中可获得最高生物质产率393.6 mg/(L·d)。但是在高浓度沼液（75%～100%）中微藻生长受到一定抑制，导致氮磷的去除效果变差。培养期间细菌的数量增长显著，促进了COD的去除。各浓度沼液生物质中总脂、总糖和蛋白质含量分别为13.2%～32.2%、12.3%～27.6%和16.2%～30.9%。实验数据表明，低浓度沼液能产生更多高能量组分的生物质，适合用作生物燃料的开发；高浓度沼液能产生含较多蛋白质的生物质，更适合用作动物饲料。

Abstract

In this study

the treatment performance of dairy farm liquid digestate by freshwater microalga

Chlorella vulgaris

NIES-227 was investigated and the potential of biomass utilization was evaluated. In column photobioreactors

Chlorella vulgaris

was used to treat wastewaters containing unsterilized liquid digestate at concentrations of 25%

50%

75%

and 100%. The results showed that the removal of total nitrogen (TN)

total phosphorus (TP) and COD were 36.0%—92.5%

42.8%—100% and 6.9%—32.2%

respectively. The microalgae exhibited the maximum removal efficiencies of nitrogen and phosphorus in 25% liquid digestate

and the maximum removals of ammonia nitrogen (NH

-N)

TN and TP were 99.9%

91.0% and 100%

respectively. The microalgae grew well in low concentrations of liquid digestate (25%—50%)

and the highest biomass productivity was obtained in 50% liquid digestate with the value of 393.6 mg/(L·d). However

microalgal growth was inhibited in higher concentrations of liquid digestate (75%—100%)

which led to the decreases of the removal of nitrogen and phosphorus. The number of bacteria increased significantly during the cultivation among all the treatment groups

which was beneficial to the COD removal. The contents of total lipid

total sugar and protein in biomass harvested from different concentrations of liquid digestate were 13.2%—32.2%

12.3%—27.6% and 16.2%—30.9%

respectively. The experimental data show that low-concentration biogas slurry can produce more high-energy components of biomass

which is suitable for biofuel development; high-concentration biogas slurry can produce biomass with more protein

which is more suitable for animal feed.

关键词

Keywords

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