摘要
通过在厌氧-好氧-沉淀-厌氧（anaerobic-oxic-settling-anaerobic,A-OSA）工艺中添加复合腐殖生物填料,使之形成腐殖活性污泥A-OSA（humic activated sludge A-OSA process,HS-A-OSA）工艺后,研究了污泥在厌氧反应池内不同停留时间（3、5.5和7 h）的HS-A-OSA工艺污泥减量效果、污染物去除效能及污泥沉降性能的影响。结果表明,在同等条件下,与A-OSA参照工艺相比,HS-A-OSA工艺的污泥产量降低了16.3%～23.0%,化学需氧量（COD）去除率略高,氨氮（NH＋4-N）、总氮（TN）和总磷（TP）的去除率分别提高了7.0%～11.2%、9.9%～10.4%和11.9%～13.8%,污泥体积指数（SVI）稳定在66.8 m L·g-1左右。综合考虑认为,对于HS-A-OSA工艺而言,系统中的活性污泥在厌氧反应池内停留时间为5.5 h时,污泥减量及污染物去除效果最佳。
The HS-A-OSA process improves upon the A-OSA process by adding the compound humic biological padding. This study investigated the results of sludge reduction,efficiency of pollution degradation,and performance of activated sludge with various sludge retention times（ SRT of 3,5. 5,and 7 h） in an anaerobic tank.The results indicate that the HS-A-OSA process reduced excess sludge by 13% ～ 27% compared to the reference process. The efficiency of COD removal was slightly higher for the HS-A-OSA process than it was for the A-OSA process. The removal efficiency of NH＋4-N,TN,and TP increased by 7. 0% to 11. 2%,9. 9% to 10. 4%,and11. 9% to 13. 8%,respectively. The sludge volume index averaged 66. 8 m L ·g- 1. These results suggest that it might be best to apply the HS-A-OSA process with 5. 5 h SRT to reduce excess sludge and increase pollutant removal.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第8期4031-4036,共6页
Chinese Journal of Environmental Engineering
基金
国家水体污染控制与治理科技重大专项(2012ZX07201-001)
