颗粒活性炭强化葡萄酒生产废水与剩余污泥厌氧共消化的影响  

Effect of granular activated carbon on enhanced anaerobic co-digestion of winery wastewater and sewage sludge

作　　者：马芷萱 南亚萍[1,2] 余涛 廖驰 杨丹 于莉芳[1,2] 郑兰香[3] MA Zhixuan;NAN Yaping;YU Tao;LIAO Chi;YANG Dan;YU Lifang;ZHENG Lanxiang(School of Environmental&Municipal Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China;Key Laboratory of Northwest Water Resource,Environment and Ecology,Ministry of Education,Xi′an University of Architecture and Technology,Xi′an 710055,China;College of Ecology and Environment,Ningxia University,Yinchuan 750021,China)

机构地区：[1]西安建筑科技大学环境与市政工程学院,西安710055 [2]西安建筑科技大学西北水资源与环境生态教育部重点实验室,西安710055 [3]宁夏大学生态环境学院,银川750021

出　　处：《环境工程学报》2024年第8期2210-2218,共9页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划项目(2019YFD1002500)。

摘　　要：葡萄酒生产废水和剩余污泥厌氧共消化具有均衡底物营养、缓减毒物抑制和增加菌群多样性等优点。为进一步提高产甲烷效率,研究考察颗粒活性炭(5~20 g·L^(-1))对中温(35±1)℃厌氧共消化系统产甲烷性能、微生物活性和微生物群落结构的影响。批次实验结果表明,最佳颗粒活性炭投加量为10 g·L^(-1),相应累计产甲烷量可达283.9 mL·g^(-1)(以VS计),比空白组高41.3%,GAC主要通过刺激污泥胞外聚合物分泌和有机物降解提高累积产甲烷量。在GAC投加量为10 g·L^(-1)下,运行80 d的半连续运行实验中发现,稳定期间共消化产甲烷速率为(293.9±3.3)mL·(g·d)^(-1)(以TCOD计),最大比产甲烷活性为119.4 mL·(g·d)^(-1)(以VSS计),辅酶F420含量和电子传递活性相比未添加GAC分别提高了29.5%和16.7%,并且GAC可通过加速丙酸和丁酸降解和调节p H等途径提高系统稳定性能。此外,GAC促进了互营VFAs氧化细菌Syntrophomonas和具有胞外电子传递功能细菌Pseudomonas和Desulfovibrio的丰度,以及可作为电子受体参与直接种间电子转移的产甲烷菌Methanobacterium的丰度,从而强化了细菌和产甲烷菌的种间电子传递,提高有机物代谢速率。以上结果表明,添加GAC可有效提高葡萄酒生产废水和剩余污泥的共消化性能,提高整个消化系统的处理效率。The anaerobic co-digestion of winery wastewater and sewage sludge has the advantages of balancing substrate nutrition,alleviating toxin inhibition and increasing microbial diversity.In order to further improve the methane production efficiency,the effects of granular activated carbon(5~20 g·L^(-1))on methane production performance,microbial activity and microbial community structure in mesophilic(35±1)℃ anaerobic codigestion system were investigated.The results of batch experiments showed that the optimal GAC dosage was 10 g·L^(-1),and the corresponding cumulative methane production could reach 283.9 mL·g^(-1)(based on VS),which was 41.3%higher than that of the blank group.GAC addition mainly increased the cumulative methane production by stimulating the secretion of extracellular polymeric substance and degradation of organic matter.In the semi-continuous operation experiment at GAC dosage of 10 g·L^(-1)for 80 d,the co-digestion methanogenesis rate was(293.9±3.3)mL·(g·d)−1(based on TCOD)during the stable period,and the maximum specific methanogenic activity was 119.4 mL·(g·d)^(-1)(based on VSS).The content of coenzyme F420 and electron transport activity increased by 29.5%and 16.7%,respectively,compared with the group without GAC addition,and GAC addition could improve the stability of the system by accelerating the degradation of propionic acid and butyric acid and adjusting pH.In addition,GAC addition promoted the abundance of Syntrophomonas,Pseudomonas and Desulfovibrio,which are syntrophic VFAs oxidizing bacteria and extracellular electron transfer bacteria,and Methanobacterium,which can be used as an electron acceptor to participate in direct interspecies electron transfer,thereby enhancing the interspecies electron transfer between bacteria and methanogens,and improving the metabolic rate of organic matter.In summary,the addition of GAC can effectively improve the co-digestion performance of winery wastewater and sewage sludge,and improve the treatment efficiency of the entire digestive syste

关 键 词：葡萄酒生产废水 剩余污泥 厌氧共消化 颗粒活性炭 种间电子传递 

分 类 号：X703[环境科学与工程—环境工程]