A new version of the Circulating Fluidized Bed Bioreactor (CFBBR) Technology for municipal and industrial wastewater treatments

一个早期的CRD项目已经证明，该研究小组开发的新型CFBBR技术是一种非常有效的生物反应器，在废水处理中具有许多优势。目前研究项目的主要目标是测试上述CFBBR系统的不同版本，用于两个目的：(1)通过提供一个比“原始”CFBBR系统更简单(单位高度更低，颗粒流动更简单)的替代方案来降低建设和运营成本；(2)提供一种配置，允许通过这项技术轻松地对现有的大量城市污水处理厂进行改造。这种新装置的主要不同之处在于，提升管和下降管都将在传统的沸腾床状态下运行。新版CFBBR已经获得专利：它仍然使用相同的附着微生物膜技术来生物降解有机物和营养物质。与最初的CFBBR设计一样，这个修订版的CFBBR还将更紧凑、更高效的固定膜工艺与最近开发的生物营养去除(BNR)工艺相结合，提供了额外的氮和磷去除。有了垂直和水平两种版本，CFBBR技术可以进一步优化，以适应各种工厂规模的需求。

An earlier CRD project has demonstrated that the novel CFBBR technology developed by this research team is a very effective bioreactor and offers numerous advantages in wastewater treatment. The main objective of the current research project is to test a different version of the above-mentioned CFBBR system, for two purposes: (1) to reduce the cost of construction and operation by providing a simpler (with lower unit height and simpler particle flow) alternative to the "original" CFBBR system and (2) to provide a configuration that allows easy retro-fitting of the large number of existing municipal wastewater treatment plants by this technology. The main difference for this new unit is that both the riser and the downer will operate in the conventional fluidized bed regime. The new version CFBBR has been patented: It still utilizes the same attached microbial film technology for biodegradation of both organics and nutrients. As with the original CFBBR design, this revised version of CFBBR also combines the more compact and efficient fixed-film process with the recently developed biological nutrient removal (BNR) process that provide the additional removal of nitrogen and phosphorous. With both the vertical and horizontal versions available, the CFBBR technology can be further optimized to suit the need of a wide range of plant sizes.