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预处理对园林垃圾混合物料联合厌氧发酵的影响

徐一雯 蒋建国 孟园 颜未蔚

徐一雯, 蒋建国, 孟园, 颜未蔚. 预处理对园林垃圾混合物料联合厌氧发酵的影响[J]. 环境工程, 2020, 38(11): 168-174. doi: 10.13205/j.hjgc.202011028
引用本文: 徐一雯, 蒋建国, 孟园, 颜未蔚. 预处理对园林垃圾混合物料联合厌氧发酵的影响[J]. 环境工程, 2020, 38(11): 168-174. doi: 10.13205/j.hjgc.202011028
XU Yi-wen, JIANG Jian-guo, MENG Yuan, YAN Wei-wei. EFFECTS OF PRETREATMENT ON ANAEROBIC CO-DIGESTION OF GARDEN WASTE AND OTHER SUBSTRATES[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(11): 168-174. doi: 10.13205/j.hjgc.202011028
Citation: XU Yi-wen, JIANG Jian-guo, MENG Yuan, YAN Wei-wei. EFFECTS OF PRETREATMENT ON ANAEROBIC CO-DIGESTION OF GARDEN WASTE AND OTHER SUBSTRATES[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(11): 168-174. doi: 10.13205/j.hjgc.202011028

预处理对园林垃圾混合物料联合厌氧发酵的影响

doi: 10.13205/j.hjgc.202011028
基金项目: 

水体污染控制与治理科技重大专项(2017ZX07202005)。

详细信息
    作者简介:

    徐一雯(1994-),女,硕士研究生,主要从事固体废物资源化技术研究。xyw16@mails.tsinghua.edu.cn

    通讯作者:

    蒋建国(1970-),男,教授,主要从事固体废物处理与资源化利用研究。jianguoj@mail.tsinghua.edu.cn

EFFECTS OF PRETREATMENT ON ANAEROBIC CO-DIGESTION OF GARDEN WASTE AND OTHER SUBSTRATES

  • 摘要: 采用超声、微波及碱热预处理技术强化园林垃圾、厨余垃圾与果蔬垃圾联合厌氧发酵产气性能,并以未进行预处理的实验组作为对照。结果表明:4组实验pH值在2 d内迅速降低至7.24~7.45,反应后期可稳定在7.7~8.0,表明厌氧消化系统有较强的稳定性。挥发性脂肪酸(volatile fatty acids,VFA)浓度在第2~4天内达到最大值。乙酸和丙酸是4组实验中VFA的主要成分,两者比例之和在70%以上。VFA浓度在第13天后降低到500 mg/L以下,且以乙酸为主。氨氮(TAN)浓度在前4 d内出现一定波动,随后逐渐升高至2190~2410 mg/L。游离氨氮(FAN)浓度呈先降低后增加趋势,并在第13天后逐渐趋于稳定,为144~209 mg/L。沼气中甲烷比例在第2天后均超过50%,并在第11~12天时达到最大值61.4%~63.8%。修正的Gomperts模型模拟结果表明:预处理技术可缩短反应体系厌氧产沼的适应时间,提高前期产气速率。除此之外,超声预处理与碱热预处理可显著提高基质甲烷产率,由未处理时的396 mL/g分别提高到601,536 mL/g,而微波预处理使得反应体系甲烷产量略有降低。
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出版历程
  • 收稿日期:  2019-10-15
  • 网络出版日期:  2021-04-23
  • 刊出日期:  2021-04-23

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