Dipartimento di Ingegneria Idraulica ed Applicazioni Ambientali, Università di Palermo, Viale delle Scienze, 90128, Palermo, Italy.
Water Sci Technol. 2010;61(4):891-902. doi: 10.2166/wst.2010.834.
The paper presents the comparison between the traditional activated sludge system (AS) and a hybrid moving bed biofilm reactor (HMBBR). In particular, an experimental campaign has been carried out at the WWTP in Palermo (Italy), on a pilot plant consisting of two pre-anoxic schemes. The aerated tank of the HMBBR line was filled with suspended carriers (AnoxKaldnes K1), with a 30% filling ratio. The hydraulic load of the HMBBR line was increased up to two times the AS one. Further, in order to distinguish the additional contribution of the attached biomass for the HMBBR system, in the two lines the Mixed Liquor Suspended Solids (MLSS) was maintained as equal as possible. The monitoring period lasted three months during which several parameters were monitored. The obtained results showed a good treatment ability of the HMBBR system, referring to the organic matter removal as well as to the ammonium removal. In particular, in spite of the increase of the hydraulic load for the HMBBR line, the two systems showed a similar performance in terms of both organic and nitrogen removal. The results demonstrate the higher treatment capacity of the HMBBR addressing such system as an effective technology for the upgrading of overloaded wastewater treatment plants.
本文对传统活性污泥系统（AS）和混合移动床生物膜反应器（HMBBR）进行了比较。特别是，在意大利巴勒莫的污水处理厂进行了一项实验活动，该实验在由两个预缺氧方案组成的中试工厂中进行。HMBBR 工艺的曝气池填充了悬浮载体（AnoxKaldnes K1），填充率为 30%。HMBBR 工艺的水力负荷增加到 AS 工艺的两倍。此外，为了区分 HMBBR 系统中附着生物量的额外贡献，在两条线中，混合液悬浮固体（MLSS）保持尽可能相等。监测期持续了三个月，在此期间监测了几个参数。结果表明，HMBBR 系统具有良好的处理能力，在有机物去除和氨氮去除方面都表现良好。特别是，尽管 HMBBR 工艺的水力负荷增加，但两条线在有机物和氮去除方面的性能相似。结果表明，HMBBR 具有更高的处理能力，可以将该系统作为升级过载污水处理厂的有效技术。
