一种高效测试污泥可生物降解性的实验方法研究  

STUDY ON AN EFFICIENT APPROACH TO TEST THE BIODEGRADABILITY OF SLUDGE

作　　者：韩磊[1] 李卓[1] 吴志根[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《环境工程》2016年第5期137-142,共6页Environmental Engineering

基　　金：污染控制与资源化研究国家重点实验室自主课题(PCRRY11010);国家青年自然科学基金(21307092);中央高校基本科研业务费专项资金资助

摘　　要：污泥的可生物降解性能由其有机组分的生物可及度和组分分子的复杂度共同决定。通过采用化学分级提取方法研究污泥组分的生物可及度,使用不同强度的提取溶液分离出4种化学可及度不同的提取组分,同时结合三维荧光光谱法对各组分中有机物质的复杂度进行分析。分析结果表明:组分的化学可及度与其生物可及度之间存在正相关关系;生物可及度较高,其成分有机物分子结构简单的组分SPOM(soluble particulate organic matter,SPOM)与REOM(readily extractible organic matter,REOM)在厌氧消化过程中降解率较高,分别为59.2%与46.3%的COD;而生物可及度低,组成复杂的组分SEOM(slowly extractible organic matter,SEOM)与PEOM(poorly extractible organic matter,PEOM)的生物降解率分别只有18.4%和5.8%的COD。To assess the biodegradability of sludge,both the bioaccessibility and complexity of the sludge organic matter should be simultaneously determined. Chemical sequential extraction was used to estimate the bioaccessibility of the organic matter.The sludge organic matter was fractionated into four compartments with different chemical accessibility, and then the complexities of the extracted fractions were revealed through 3D fluorescence spectroscopy analysis. The results show that the chemical accessibility is positively correlated with the bioaccessibility. The most bioaccessible fractions of SPOM（ soluble particulate organic matter,SPOM） and REOM（ readily extractible organic matter,REOM） that constitute simple organic matter were biodegraded with high percentages of COD,which are at 59. 2% and 46. 3%,respectively; while the least bioaccessible fractions of SEOM（ slowly extractible organic matter,SEOM） and PEOM（ poorly extractible organic matter,PEOM） that compose complex and refractory organic matter were less biodegraded with 18. 4% and 5. 8% of COD,respectively.

关 键 词：污泥有机组分 可生物降解性 生物可及度 化学分级提取 三维荧光光谱 

分 类 号：X703[环境科学与工程—环境工程]