El-Senousy Waled Morsy, Abou-Elela Sohair Imam
Environmental Virology Lab., Department of Water Pollution Research, National Research Centre (NRC), 33 El-Buhouth st., Dokki, Giza, P.O. 12622, Egypt.
Wastewater Treatment Lab., Department of Water Pollution Research, National Research Centre (NRC), 33 El-Buhouth st., Dokki, Giza, P.O. 12622, Egypt.
Food Environ Virol. 2017 Sep;9(3):287-303. doi: 10.1007/s12560-017-9286-4. Epub 2017 Feb 14.
The capability of a cost-effective and a small size decentralized pilot wastewater treatment plant (WWTP) to remove enteric viruses such as rotavirus, norovirus genogroup I (GGI), norovirus genogroup II (GGII), Hepatitis E virus (HEV), and adenovirus was studied. This pilot plant is an integrated hybrid anaerobic/aerobic setup which consisted of anaerobic sludge blanket (UASB), biological aerated filter (BAF), and inclined plate settler (IPS). Both the UASB and BAF are packed with a non-woven polyester fabric (NWPF). Results indicated that the overall log reductions of enteric viruses' genome copies through the whole system were 3.1 ± 1, 3.3 ± 0.5, and 2.6 ± 0.9 log for rotavirus, norovirus GGI, and adenovirus, respectively. Reduction efficiency for both norovirus GGII and HEV after the different treatment steps could not be calculated because there were no significant numbers of positive samples for both viruses. The overall reduction of rotavirus infectious units through the whole system was 2.2 ± 0.8 log reduction which is very close to the overall log reduction of adenovirus infectious units through the whole system which was 2.1 ± 0.8 log reduction. There was no considerable difference in the removal efficiency for different rotavirus G and P types. Adenovirus 41 was the only type detected in the all positive samples. Although the pilot WWTP investigated is cost effective, has a small footprint, does not need a long distance network pipes, and easy to operate, its efficiency to remove enteric viruses is comparable with the conventional centralized WWTPs.
研究了一种具有成本效益且体积小的分散式试点污水处理厂去除肠道病毒（如轮状病毒、诺如病毒基因组I型（GGI）、诺如病毒基因组II型（GGII）、戊型肝炎病毒（HEV）和腺病毒）的能力。该试点工厂是一种集成的厌氧/好氧混合装置，由厌氧污泥床（UASB）、曝气生物滤池（BAF）和斜板沉降器（IPS）组成。UASB和BAF都填充有非织造聚酯织物（NWPF）。结果表明，整个系统对轮状病毒、诺如病毒GGI和腺病毒的肠道病毒基因组拷贝数的总体对数减少分别为3.1±1、3.3±0.5和2.6±0.9对数。由于两种病毒均无大量阳性样本，因此无法计算不同处理步骤后诺如病毒GGII和HEV的去除效率。整个系统对轮状病毒感染单位的总体减少率为2.2±0.8对数减少，这与整个系统对腺病毒感染单位的总体对数减少率2.1±0.8对数减少非常接近。不同轮状病毒G型和P型的去除效率没有显著差异。腺病毒41是所有阳性样本中唯一检测到的类型。尽管所研究的试点污水处理厂具有成本效益、占地面积小、不需要长距离管网且易于操作，但其去除肠道病毒的效率与传统的集中式污水处理厂相当。
