Submerged electrokinetic membrane bioreactor for excellent quality effluent

在北美的许多地方，寻找高质量的污水，特别是磷，需要使用化学品。在加拿大和加拿大北部，低废水温度对生物工厂的设计者提出了挑战，此外还需要不经常维护的过程，该过程将提供最高的废水质量，而不含化学物质，同时去除病原体、有害化合物和营养物质。在偏远地区，目前的处理方法往往是不够的，即使工厂经常将废水排放到社区抽取饮用水的同一个接收器中。提出了一种将生物处理、膜固体分离与电化学工艺相结合的新型反应器技术，以解决在寒冷气候条件下获得高出水水质的问题。开发了一种电动膜生物反应器（EKMBR），该反应器将去除有机物，大多数病原体，氮，磷和固体以及激素和重金属等内分泌干扰物，从而在不添加化学物质的情况下获得优异的出水质量，同时最大限度地减少污泥的产生。EKMBR工艺的发展将包括生物处理的优化，去除磷和有机物的电流密度最小化，特别是通过消除部分造成污染的胶体部分来减少膜的污染，这仍然是膜基生物系统的关键操作问题。该项目将提供尖端技术，以更低的成本排放更清洁的污水，而不使用化学品，从而加强加拿大的经济。该反应器还针对新兴市场的限制处理（LoT）污水厂，最近提出的情况下脆弱或干旱的地区在美国和加拿大南部的湖泊受到威胁。将有三个逐步扩大规模的设施，其中最大的试点在蒙特利尔的市政污水处理厂进行测试。

In many places in North America the search for high quality of effluent, particularly phosphorus, calls for the use of chemicals. In Canada and the Canadian North low wastewater temperatures challenge the designer of biological plants in addition to the demand for an infrequent-maintenance process that will provide the highest effluent quality without the chemicals, while removing pathogens, hazardous compounds and nutrients. Present methods of treatment in remote areas are often inadequate even though the plants often discharge the effluent into the same receiver from which the community draws drinking water. It is proposed to develop a new reactor technology that combines biological treatment and membrane solids separation with electrochemical processes, that would solve the problem of attaining high effluent quality in the cold climate conditions. An electrokinetic membrane bioreactor (EKMBR) is developed that will remove organic matter, most pathogens, nitrogen and phosphorus and solids as well as endocrine disrupters such as hormones and heavy metals, leading to superior effluent quality without addition of chemicals, while minimizing the amount of sludge generated. The EKMBR process development will include optimization of biological treatment, minimization of the electrical current density for removal of phosphorus and organics and in particular decreasing the fouling of the membrane by eliminating the colloidal fraction, partially responsible for fouling, which continues to be the key operational problem of membrane-based biological systems. The Project will enhance Canada's economy by providing cutting edge technology which will discharge much cleaner effluent at lower costs and without the use of chemicals. The reactor is also aiming at the emerging market of the limit of treatment (LoT) wastewater plants, recently proposed in case of fragile or arid locations in USA and threatened lakes in southern Canada. There will be three progressively scaled-up facilites proposed with the largest pilot tested at the municipal wastewater treatment plant in Montreal.