HUBEI AGRICULTURAL SCIENCES ›› 2018, Vol. 57 ›› Issue (18): 39-43.doi: 10.14088/j.cnki.issn0439-8114.2018.18.009

• Resource & Environment • Previous Articles     Next Articles

Study on the Purification of A Biogas Slurry of Chlorella pyrenoidosa

TIAN Chen-xue1, LIU Ming2, HUANG Kai-yao3, JIANG Si-wen1,4, GAO Qi-shuang2, MIAO Wen5   

  1. 1.College of Animal Science and Technology, Huazhong Agricultural University,Wuhan 430070,China;
    2.Institute of Animal Husbandry and Veterinary Science, Wuhan Academy of Agricultural Sciences and Technology,Wuhan 430208,China;
    3.Key Laboratory of Algae Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072,China;
    4.Hubei Pig Health Aquaculture Collaborative Innovation Center,Wuhan 430070, China;
    5.Wuhan COFCO Meat Products Co. Ltd.,Wuhan 430070,China
  • Received:2017-12-13 Online:2018-09-25 Published:2020-03-27

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Abstract: In order to treat biogas slurry more economically and effectively, microalgae was used to purify biogas slurry. The aim was to fully detect the changes of biogas slurry at different times and different indexes during purifying 10% diluted biogas slurry by a Chlorella pyrenoidosa for 18 days. The results showed that the algae chlorella pyrenoidosa could survive in the biogas slurry after disinfection and had a good growth status whose highest OD680 nm could reach 1.206,highest relative growth rate could reach 0.208 0. The removal rates of total nitrogen,total phosphorus and ammonium nitrogen in biogas slurry were 61.89%,99.72% and 96.79%,respectively; The contents of NO3--N and NO2--N increased a little; And COD content showed a fluctuation curve. The feasibility of purifying the biogas slurry by C. pyrenoidosa was proved.

Key words: Chlorella pyrenoidosa, biogas slurry, total nitrogen, total phosphorus, ammonium nitrogen

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