Malting wastewater biorefinery for energy recovery, solids reduction and water reuse

磨砂过程产生大量废水，其中含有中到高浓度的COD/BOD和营养物质(P)，以及在嗜冷温度下的高固体含量。目前，来自加拿大麦芽公司桑德贝工厂的这股废水被排放到市政污水系统进行好氧处理，这对该公司来说是昂贵的，并增加了市政污水处理系统的有机负荷压力。以“3R”(回收、减少和再利用)为目标，开发新技术，特别是厌氧技术，以回收能量和营养物质以及水的再利用。莱克黑德大学正在开发的厌氧膜生物反应器(ANMBR)技术为处理这一废水提供了一个极好的机会。拟议的研究将测试ANMBR技术处理麦芽废水的可行性，这种技术以前从未进行过测试，并获得 这项新技术的工艺设计和经济分析的工程信息，以及对ANMBR中这一废水的膜污染有了更好的基本了解。预计本研究开发的技术也可应用于其他啤酒工业废水的处理。

The matling process generates a large amount of wastewater that contains a medium to high strength of COD/BOD and nutrient (P) and a high solids content at psychrophilic temperatures. Currently, this stream of wastewater from the Thunder Bay plant of Canada Malting Co. is discharged into the municipal wastewater system for aerobic treatment, which is costly to the company and increases the organic loading stress of the municipal wastewater treatment system. With a target of "3R" (recycle, reduce and reuse), it is desirable to develop new technology, particularly anaerobic technology, for energy and nutrients recovery and water reuse. The anaerobic membrane bioreactor (AnMBR) technology being developed at Lakehead University provides an excellent opportunity for the treatment of this stream of wastewater. The proposed study will test the feasibility of the AnMBR technology for malting wastewater treatment, which has never been tested before, and obtain engineering information for process design and economic analysis of this novel technology, in addition the to the development of an improved fundamental understanding of membrane fouling in AnMBR with this stream of wastewater. It is anticipated that the technology developed from this study can be applied to other brewery industry wastewater treatments as well.