Submerged electrokinetic membrane bioreactor for excellent quality effluent

在北美的许多地方，寻求高质量的污水，特别是磷，要求使用化学品。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，此外还需要一种不经常维护的工艺，这种工艺将在不含化学品的情况下提供最高的废水质量，同时去除病原体、危险化合物和营养物。目前在偏远地区的处理方法往往不够，尽管工厂往往将污水排入社区饮用水的同一个接收器。建议开发一种新的反应器技术，将生物处理和膜固体分离与电化学过程相结合，这将解决在寒冷气候条件下获得高出水水质的问题。电动膜生物反应器（EKMBR）的开发，将去除有机物，大多数病原体，氮和磷和固体以及内分泌干扰物，如激素和重金属，导致上级出水水质没有添加化学品，同时最大限度地减少污泥的产生量。EKMBR工艺的开发将包括生物处理的优化，用于去除磷和有机物的电流密度的最小化，特别是通过消除胶体级分来减少膜的结垢，胶体级分部分地导致结垢，这仍然是基于膜的生物系统的关键操作问题。 该项目将通过提供尖端技术来提高加拿大的经济，这些技术将以较低的成本排放更清洁的污水，并且不使用化学品。该反应器还瞄准了处理极限（LoT）废水处理厂的新兴市场，该市场最近在美国脆弱或干旱地区以及加拿大南部受威胁的湖泊中提出。将提出三个逐步扩大规模的设施，其中最大的一个将在蒙特利尔的城市废水处理厂进行试点测试。

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.