UASB反应器处理造纸废水不同高度的污泥特性  

Sludge characteristics along the height of full-scale UASB reactor treating papermill effluents

作　　者：李江[1] 何强[1] Henri Spanjers 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]代尔夫特理工大学卫生工程系,代尔夫特

出　　处：《环境科学学报》2012年第12期2929-2934,共6页Acta Scientiae Circumstantiae

摘　　要：为探讨上向流污泥床(UASB)反应器不同高度处的污泥特性,研究了生产性UASB反应器(总高7.2m)处理造纸废水时不同高度的污泥外观形态、稳定性及其产甲烷活性.结果显示,VS、TS、VSS、TSS浓度随着在反应器中取样高度的增加逐渐降低,并在距离反应器底部2.20m高度处出现分层.反应器1.20m和3.45m高度处的溶解性COD值较大(900mg·L-1以上).反应器1.20m处污泥的稳定性较好(VS/TS较低),固体浓度较高(TS136g·L-1,VS75g·L-1),产甲烷活性较高(0.16g·g-1·d-1,以每gVSS中的COD计),颗粒较大(平均当量直径为308μm).UASB反应器处理造纸废水不同高度的污泥颗粒外观形态虽有差异,但污泥的生物活性近似.The observations of sludge stability,granule morphology and specific methanogenic activity （SMA） were used to investigate the sludge characteristics along the height of full-scale upflow anaerobic sludge bed （UASB） reactor treating paper-mill effluents.The results showed that the solids concentration of sludge decreased and then stabilized with increasing heights along UASB reactor.Higher soluble COD concentration （more than 900 mg·L-1） of sludge was obtained at 1.20 m and 3.45 m of the UASB reactor.In terms of the ratio of VS/TS,SMA and morphology characteristics of sludge,the sludge from 1.20 m of UASB reactor was more stable （VS /TS as 50%） and had higher SMA （0.16 g·g-1 ·d-1,as amount of COD in per gram VSS） and bigger granule （average equivalent diameter as 308μm） than that of other places of the reactor.The sludge along the height of full-Scale UASB reactor had significant difference in granule morphology,but had close specific methanogenic activity.

关 键 词：污泥特性 产甲烷活性 生产性UASB反应器 造纸废水 

分 类 号：X703[环境科学与工程—环境工程]