好氧颗粒污泥SBR处理实际含盐废水的研究

Research on the treatment of real salt-containing wastewater by SBR seeded with aerobic granular sludge

用接种成熟好氧颗粒污泥(AGS)的SBR处理含盐有机废水,考察盐度对AGS的形态和结构的影响及AGS-SBR对主要污染物的降解特性。结果表明:低盐度下(<2%),AGS-SBR运行相对稳定,对COD、NH3-N、SS的平均去除率分别达到87.6%、49.3%、69%;高盐度下(6%),AGS中的菌胶团被大量的丝状菌代替,结构疏松易碎,导致AGS-SBR运行效率大幅下降。

The salt-containing organic wastewater has been treated by SBR seeded with mature aerobic granular sludge（AGS）. The effect of salinity on the morphology and structure of the AGS and the effect of AGS-SBR on main contaminants biodegradation characteristics are investigated. The results show that the running of AGS-SBR is rela- tively stable at low salinity （〈 2%）. The average removing rates of COD, NH3-N and SS are 87.6%,49.3%, and 69%, respectively. At a high salinity （6%）, the zoogloea in AGS are largely replaced by filamentous fungus. The structure of AGS gets loose and easily broken, resulting in the sharp decrease of running efficiency of AGS-SBR.