摘要
提出了常温下水解(HUSB)和颗粒污泥(EGSB)反应器串联处理城市生活污水的新工艺以提高悬浮性和溶解性COD的去除率。在T>15℃和T=12℃条件下,工艺可分别达到70%总COD、85%SS的去除率和60%总COD、77%SS的去除率。HUSB反应器的水力停留时间是3h,用于预处理去除SS和提高出水COD的溶解性和可生化性,其SS、悬浮性COD的去除率分别为86%和66%,并超过50%的污泥水解率。在T=8~12℃时,EGSB反应器的水力停留时间是2h,可获得60%总COD去除率和23~70L/m3污水的沼气产量。
A new anaerobic treatment process which aims at reducing the effuent suspended solids (SS) and soluble organic matter is presented. Consisting of HUSB and EGSB reactors in series,the process can remove 70% of COD and 85% of SS at temperature higher than 15℃;and 60% of COD,77% of SS at temperature of 12℃.HUSB reactor is used for pretreatment-removing SS,raising the offluent dissolved COD and biodegradability. The removal officiency of SS is 86% and that of suspended GOD is 66% at hydraulic retention time of 3.0h,and more than 50% of sludge hydrolysis is obtained. At ambient temperature (8~12℃), EGSB reactor can remove 60% of COD and produce the biogas amounting to 23~70L/m 3 wastewater at hydraulic retention time of 2.0h.
出处
《中国给水排水》
CAS
CSCD
北大核心
1999年第8期19-23,共5页
China Water & Wastewater
关键词
废水处理
城市污水
水解
颗粒污泥膨胀床
wastewater treatment domestic wastewater anaerobic treatment hydrolysis HUSB EGSB