在SBR反应器中驯化培养好氧颗粒污泥。考察颗粒污泥物理性能变化和有机物降解效果,研究好氧颗粒污泥在低浓度有机废水中的适应性。实验结果表明,污泥颗粒化进程快,反应器运行第14天时,出现粒径为3~6 mm,表面光滑有光泽的颗粒污泥,对COD的去除率保持在85%以上;降低COD后,NH3-N、TP的去除率分别为74%和90%;系统对甲醇有去除作用但效果不理想,最终去除率只达到24.28%。
The aerobic granular sludge has been cultured in a sequencing batch reactor(SBR).The physical capacity change of aerobic granular sludge and degradation effectiveness of organic matter are investigated.Moreover,the adaptability of aerobic granular sludge in low-concentration wastewater is inspected.The results show that the sludge granulation proceeds fast.When the reactor has run for 14 d,the granular sludge with a diameter of 3-6 mm and smooth and shiny surface appears.Its removing rates on COD maintains at 85% or more.After the COD gets lower,the removing rates of NH3-N and TP are 74% and 90%,respectively.It is detected that the system has removing effect on methanol,but its effectiveness is not satisfactory,being only 24.38%,at last.