缺氧污泥储池改良 IFAS-OSA 系统的效率研究。
Efficiency studies of modified IFAS-OSA system upgraded by an anoxic sludge holding tank.
机构信息
Department of Environmental Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Environmental Health Department, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
出版信息
Sci Rep. 2021 Dec 17;11(1):24205. doi: 10.1038/s41598-021-03556-6.
An upgraded integrated fixed-film activated sludge-oxic settling anoxic (IFAS-OSA) system is a new technology for reducing nutrients and excess sludge. The results showed that the average TN removal efficiency of the IFAS-OSA system was gradually increased up to 7.5%, while the PO-P removal efficiency increased up-to 27%, compared with that of the IFAS system. The COD removal efficiency of the IFAS-OSA system was slightly increased up-to 5.4% and TSS removal efficiency increased up to 10.5% compared with the control system. Biomass yield coefficient (Y) in the IFAS and IFAS-OSA systems were 0.44 and 0.24 (gr MLSS/ gr COD). Hence, sludge production decreased by 45%. The average SVI was decreased by 48% in IFAS-OSA system compared with IFAS. This study demonstrated the better performance of the IFAS-OSA system compared to that of the IFAS system.
升级后的一体化固定膜活性污泥-好氧沉淀缺氧（IFAS-OSA）系统是一种减少营养物和剩余污泥的新技术。结果表明，与 IFAS 系统相比，IFAS-OSA 系统的平均 TN 去除效率逐渐提高至 7.5%，而 PO-P 去除效率提高至 27%。IFAS-OSA 系统的 COD 去除效率略有提高至 5.4%，TSS 去除效率提高至 10.5%，与对照组相比。IFAS 和 IFAS-OSA 系统中的生物量产率系数（Y）分别为 0.44 和 0.24（gr MLSS/gr COD）。因此，污泥产量减少了 45%。与 IFAS 相比，IFAS-OSA 系统的平均 SVI 降低了 48%。本研究表明，IFAS-OSA 系统的性能优于 IFAS 系统。
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