Development of the annamox process for the removal of ammonia from mining effluents

Agnico Eagle Mines Ltd.是一家加拿大资深金矿公司，自1957年以来一直在加拿大从事勘探和开发活动。从矿石过程中提取和回收黄金会产生含有大量氰化物以及硫酸盐和氮基污染物的废水。目前，废水经过**一系列化学和生物过程处理，但由于这类污染物的复杂性和毒性，无法满足采矿废水法规。一种基于最近发现的被称为部分硝化和厌氧氨氧化的组合工艺的生物脱氮技术(BioCAST)可能被用于从废水中去除**剩余氮，以支持该公司有效处理**氮污染的废水。主要目的是调查这项**技术在氮污染废水处理中的潜在应用，以及(2)利用16S rRNA评估废水对微生物群落的影响。试点试验将分两个阶段进行(两个月**，然后是四个月)，以废水的氮浓度为特征(样本1；**现有污水处理厂的化学处理过程和第一步生物处理后的废水，样本2；化学处理后的废水)和BioCAST反应器的运行参数。**在该项目中开发基于PN/Anammox的技术将导致加拿大金矿废水的可持续和经济**可行的脱氮。

Agnico Eagle Mines Ltd. is a senior Canadian gold mining company with exploration and development**activities in Canada since 1957. The extract and recovery of gold from ores processes produce wastewater high**in cyanide compounds and sulfate- and nitrogen-based contaminants. Currently, the wastewater is treated with**a series of chemical and biological processes but cannot meet mining effluent regulations due to the complexity**and toxicity of such contaminants. A biological nitrogen removal technology (BioCAST) based on a recently**discovered process, known as combined partial nitrification and anammox, can potentially be used to remove**the remaining nitrogen from the wastewater to support the company in the effective treatment of**nitrogen-contaminated wastewater. The main objectives are to investigate the potential application of this**technology for the treatment of nitrogen-contaminated wastewater and (2) to assess the effect of wastewater on**the microbial communities using 16S rRNA. The pilot tests will be conducted in two phases (a two-month**followed by a four-month phase) characterized by the nitrogen concentrations of the wastewater (sample 1;**effluent after the chemical treatment processes and the first step of the biological treatment of the existing**WWTP, sample 2; effluent right after the chemical treatment) and the BioCAST reactor operating parameters.**The development of PN/Anammox-based technology in this project will lead to a sustainable and economically**viable nitrogen removal from gold mine wastewater in Canada.