Evaluation of a discfilter technology to polish MBBR, constructed wetland and municipal lagoon effluent

加拿大的大多数小社区依靠泻湖系统进行废水处理。全国约有800个 ** 此类处理设施被确定为可能需要升级，以满足 ** 新的联邦有机物、悬浮固体和非离子化氨排放法规（加拿大公报，**2012年）。此外，对向地表水体排放总磷的规定越来越严格，以控制有毒蓝藻的发展。在安大略，与其他省份一样，废水 ** 处理厂流出物的总磷限值变得更加严格，从典型值 ** 1.0 mg/L降至低至0.02 mg/L，具体取决于接收水体（Sax，2017年）。**该项目将现场测试Veolia-Water开发的盘式过滤器技术，以去除市政泻湖污水中的固体和磷 **，以及两种泻湖后抛光技术：AnoxKaldnesTM** 移动床生物膜反应器（MBBR）系统和人工湿地。试点研究将在 ** 安大略东部的两个季节性排放泻湖地点进行：卡塞尔曼镇曝气泻湖和阿尔弗雷德镇 **-兼性泻湖和人工湿地。该项目将优化盘式过滤器的一些操作参数，包括：过滤网尺寸，过滤频率和藻类去除。从这项研究中获得的知识将有助于Veolia-Water为加拿大各地的小 ** 社区提供更好的处理方案。

Most small communities in Canada rely on lagoon systems for their wastewater treatment. Approximately 800**of these treatment facilities across the country have been identified as potentially requiring upgrades to meet**new federal effluent regulations for organic matter, suspended solids and unionized ammonia (Canada Gazette,**2012). Additionally, there are increasingly stringent regulations of total phosphorus discharge to surface water**bodies to control the development of toxic blue-green algae. In Ontario, as with other provinces, wastewater**treatment plant effluent limits for total phosphorus are becoming more stringent, decreasing from typical values**of 1.0 mg/L to as low as 0.02 mg/L, depending upon the receiving water body (Sax, 2017).**This project will field test a discfilter technology developed by Veolia-Water to remove solids and phosphorus**from municipal lagoon effluent as well as from two post-lagoon polishing technologies: AnoxKaldnesTM**Moving Bed Biofilm Reactor (MBBR) system and a Constructed Wetland. The pilot study will take place at**two seasonal discharge lagoon sites in Eastern Ontario: the Town of Casselman aerated lagoon and the Town**of Alfred - facultative lagoon with constructed wetland. This project will optimize the discfilter with respect to**of a number of operating parameters including: filter mesh size, backwash frequency and removal of algae. The**knowledge gained from this study will help Veolia-Water provide enhanced treatment options for small**communities across Canada.