【摘要】 通过批次实验系统研究了好氧颗粒污泥和絮状污泥处理垃圾渗滤液时的耐盐性能。实验结果表明,进水含盐量小于10 000 mg/L时,实验所用好氧颗粒污泥和絮状污泥的有机物去除能力、沉降性能、污泥活性基本上不受进水含盐量变化的影响。当进水含盐量大于10 000 mg/L时,随着进水含盐量的增大,絮状污泥的污泥沉降指数(SVI)快速减小,污泥活性及去除有机物的能力下降;相比而言,好氧颗粒污泥沉降性能更为稳定,SVI基本维持在30 mL/g左右,污泥活性及去除有机物的能力缓慢下降。当进水含盐量重新降低时,好氧颗粒污泥沉降性能变化不大,污泥活性及去除有机物的能力恢复迅速;而絮状污泥沉降性能变差,污泥活性及去除有机物的能力仍受较大抑制。更多还原

【Abstract】 Batch tests were carried out to investigate the salt-resistance performances of aerobic granular sludge and flocculent sludge.The results showed that salt content had little impact on the properties of both aerobic granules and flocs,if influent salt content(in terms of total dissolved solids,TDS) was less than 10 000 mg/L.However,with the further increment of influent TDS,SVI,sludge activity and COD removal capacity of flocs decreased.In comparison,SVI of aerobic granules stabilized at around 30 mL/g,sludge activity and COD removal capacity of aerobic granules declined slowly.When the influent TDS reduced from the peak value,settleability of aerobic granules had a little change,sludge activity and COD removal capacity recovered rapidly;while settleability of flocs became poor,sludge activity and COD removal capacity were still suppressed greatly.更多还原