New functional biocarriers for enhancing the performance of a hybrid moving bed biofilm reactor-membrane bioreactor system
New functional biocarriers for enhancing the performance of a hybrid moving bed biofilm reactor-membrane bioreactor system
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DOI：
10.1016/j.biortech.2016.02.057
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发表时间：
2016-05-01
影响因子：
11.4
通讯作者：
Chen, Rong
中科院分区：
文献类型：
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作者：
Deng, Lijuan;Guo, Wenshan;Chen, Rong
在这项研究中，开发了用于移动床生物膜反应器（MBBR）的新型海绵改性塑料载体。还评估了混合 MBBR-膜生物反应器 (MBBR-MBR) 系统的性能和膜污染行为。与带有塑料载体的 MBBR (MBBR) 相比，带有海绵改性生物载体的 MBBR (S-MBBR) 在 12 小时和 6 小时的水力保留时间 (HRT) 下表现出更好的出水水质和更强的营养物去除效果。对于混合系统的污染问题，MBR装置的可溶性微生物产物（SMP）对膜污染影响很大。海绵改性生物载体可以降低混合液中SMP和活性污泥中胞外聚合物的含量，从而减轻滤饼层和膜的孔堵塞阻力。还观察到膜饼层中的 SMP 和生物聚合物簇减少。结果表明，海绵改性生物载体能够提高 MBBR 的整体性能，并显着减轻后续 MBR 装置的膜污染。 (C) 2016 Elsevier Ltd. 保留所有权利。
In this study, new sponge modified plastic carriers for moving bed biofilm reactor (MBBR) was developed. The performance and membrane fouling behavior of a hybrid MBBR-membrane bioreactor (MBBR-MBR) system were also evaluated. Comparing to the MBBR with plastic carriers (MBBR), the MBBR with sponge modified biocarriers (S-MBBR) showed better effluent quality and enhanced nutrient removal at HRTs of 12 h and 6 h. Regarding fouling issue of the hybrid systems, soluble microbial products (SMP) of the MBR unit greatly influenced membrane fouling. The sponge modified biocarriers could lower the levels of SMP in mixed liquor and extracellular polymeric substances in activated sludge, thereby mitigating cake layer and pore blocking resistances of the membrane. The reduced SMP and biopolymer clusters in membrane cake layer were also observed. The results demonstrated that the sponge modified biocarriers were capable of improving overall MBBR performance and substantially alleviated membrane fouling of the subsequent MBR unit. (C) 2016 Elsevier Ltd. All rights reserved.