摘要
把 Anaerobic Sequencing Batch Reactor(ASBR)和 Aerobic Sequencing Batch Reactor(SBR)连接在一起构成 ASBR SBR组合反应器系统 ,用于牛场高浓度有机污水的处理。ASBR作为预处理反应器主要用于去除有机物 ,SBR用于生物脱氮处理。通过试验确定 ASBR的最佳有机负荷率 (以 COD质量浓度计 )为 3g·(L.d) -1,在此负荷率下处理后的污水在 SBR中进一步处理。对硝化和反硝化分别与同时进行时 ASBR SBR系统的污水处理性能进行了试验研究。发现 ,当硝化在反应器中进行 ,反硝化在自然条件下的出水混合液和上清液中进行时 ,混合液中 NOx N在 3周之内即被全部转化 ,上清液中反硝化反应相对较慢 ;要通过同时的硝化与反硝化高效地去除污水中的氨氮 ,则需要添加适量碳元素 。
An Anaerobic Sequencing Batch Reactor (ASBR) was combined with an Aerobic Sequencing Batch Reactor (SBR) for treating concentrated cattle wastewater, ASBR was used as the first step for pretreatment, while SBR as the second reactor for further treatment. The loading rate of 3 g COD (L·day) -1 was found to be the best one for ASBR and used for generating influence for the SBR. The performance of ASBR SBR system was investigated when nitrification and denitrification occurred separately or simultaneously. It was found that in the natural condition, NO x N could be denitrified completely in the total effluent (including both supernatant and sludge) in 3 Weeks, and the denitrification was relatively slow and incomplete in the effluent supernatant. A certain amount of additional carbon source needs to be added and the influent fed at different segments in order to achieve significant denitrification.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2002年第2期110-116,共7页
Journal of China Agricultural University
