改良型外循环厌氧反应器处理黑水特性研究

TREATMENT OF BLACKWATER WITH MODIFIED UASB REACTOR

采用改良型外循环厌氧反应器(UASB),在中温条件下对黑水进行处理,探讨其对黑水中有机物、SS以及病原菌的去除效果。结果表明,用改良型UASB反应器处理黑水能加快反应器的启动,促进絮体污泥颗粒化,提高反应器抗冲击负荷;当COD污泥负荷为0.15～0.36 kg.kg-1.d-1时,反应器的最佳上升流速为1.15～1.27 m.h-1,此时反应器对COD、SS的平均去除率分别为73%、78%;在HRT为10 h时,对粪大肠杆菌的去除率为87.4%。

Modified mothod of UASB （extemal circulation anaerobic reactor） was used for the blackwater treatment at 35℃. The results indicated that using modified UASB reactor treating Blackwater can accelarate the reactor start, and promote granulation of sludge flocs. Setting sludge loading rate （SLR） at 0.15-0.36 kg.kg-1·d-1 and the upflow velocity at 1.15～1.27 m.h-1, the removal efficiency of COD and SS were higher than 73% and 78%, respectively. When the Hydraulic retention time （HRT） was 10 h, the average removal efficiency of fecal coliforms was 87.4%.