Abstract

This study investigated the treatment performance of lagoon-based municipal wastewater treatment plants (LWWTPs) inoculated by proprietary biogranules. Augmentation process included enhancing the microbial community of lagoon basins by weekly addition of biogranules over the treatment seasons (summer and fall). Effluent qualities before and after the augmentation process were compared, and the results were reported as “enhanced treatment efficiencies, E_E”. Very low concentrations of 5-day biochemical oxygen demand (BOD₅), total nitrogen (TN), total Kjeldahl nitrogen (TKN), ammonium nitrogen (N-NH₄), and total phosphorus (TP) were detected at discharge points after the augmentation process, which corresponded to enhanced treatment efficiencies of 86, 74, 72, 92.7, and 71%, respectively. Significant reduction in total coliform and E. coli concentrations in the effluents (91 and 98%, respectively) demonstrated the capability of granule-based lagoons in destroying pathogens. Adding biogranules to lagoons was an efficient remedy for excess sludge buildup in short and long runs. Hence, inoculating lagoon plants using biogranules was suggested as an effective technique to augment rural wastewater treatment facilities.

中文翻译：

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增强生物颗粒以增强基于盐水湖的大型市政污水处理厂的性能。

摘要

这项研究调查了专有生物颗粒接种的基于泻湖的城市污水处理厂（LWWTP）的处理性能。增强过程包括在治疗季节（夏季和秋季）每周添加生物颗粒，以增强泻湖盆地的微生物群落。比较了增强过程前后的出水水质，结果报告为“增强处理效率，E _E ”。5天生化需氧量（BOD ₅），总氮（TN），凯氏氮（TKN），铵态氮（N-NH ₄）的浓度极低），并在增强过程后的放电点检测到总磷（TP），分别对应于86、74、72、92.7和71％的增强处理效率。废水中总大肠菌群和大肠杆菌浓度的显着降低（分别为91％和98％）证明了基于颗粒的泻湖具有消灭病原体的能力。在泻湖中添加生物颗粒是解决短期和长期污泥过多的有效方法。因此，建议使用生物颗粒接种泻湖植物是增加农村污水处理设施的有效技术。