水生植物压滤液厌氧发酵条件试验  

Anaerobic fermentation of hydrophyte press filtrate

作　　者：张奕[1] 杨柳燕[1] 肖琳[1] 顾宇飞[1] 蒋丽娟[1] 

机构地区：[1]污染控制与资源化研究国家重点实验室/南京大学环境学院,江苏南京210093

出　　处：《农村生态环境》2005年第3期54-57,共4页Rural Eco-Environment

基　　金：国家重大水环境专项(2002AA601011)资助

摘　　要：以沉水植物伊乐藻(Elodeanuttalli)和微齿眼子菜(Potamogetonmaackianus)以及挺水植物喜旱莲子草(Al ternantheraphiloxeroides)的压滤液为发酵原料,在中温批量液态发酵条件下,研究厌氧污泥接种量和不同氮添加水平对产气能力的影响。结果表明:在发酵时间为10d,污泥接种量为200mL·L-1时,获得的产气量最大,为863.2mL,所产气体中甲烷含量为720～750mL·L-1,发酵液的CODCr最大去除率为90%。添加1g·kg-1尿素-氮可促进3种水生植物压滤液的发酵产气,使微齿眼子菜、伊乐藻和喜旱莲子草的压滤液发酵产气量分别提高2%,10%和30%,说明尿素-氮对喜旱莲子草压滤液发酵产气的促进最大。Elodea nuttalli,Potamogeton maackianus and Alternanthera philoxeroides were crushed,pressed and then filtrated to get filtrate of hydrophyte as fermentation material.Effects of varying levels of anaerobic sludge and additional N on liquid state fermentation were studied.The results show that highest biogas production(863.2 mL)in which CH_4 content was 720～750 mL·L^(-1) in produced biogas and COD_(Cr) removal rate(90%) were reached within 10 days after 200 mL·L^(-1) of anaerobic sludge was added.Biogas production from anaerobic fermentation of press filtrate of Elodea nuttalli,Potamogeton maackianus and Alternanthera philoxeroides was increased by 2%,10% and 30%,respectively,when 1 g·kg^(-1) N was (added).

关 键 词：水生植物 压滤液 厌氧发酵 氮 沼气 

分 类 号：X524[环境科学与工程—环境工程] S216.4[农业科学—农业机械化工程]