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。当前研究项目的主要目的是测试上述CFBBR系统的不同版本，有两个目的：(1)通过提供“原始”CFBBR系统的更简单（单元高度更低，颗粒流更简单）替代方案来降低建设和运营成本；(2)提供一种配置，允许通过该技术轻松改造大量现有的城市污水处理厂。这种新装置的主要区别在于，立管和下行管都将在传统的流化床系统中运行。新版本CFBBR已获得专利：它仍然利用相同的附着微生物膜技术进行有机物和营养物的生物降解。与最初的CFBBR设计一样，这个修订版本的CFBBR还结合了更紧凑、更高效的固定膜工艺和最近开发的生物营养物去除（BNR）工艺，该工艺可以额外去除氮和磷。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.