Biological nutrient removal has been studied and applied for decades in order to remove nitrogen and phosphorus from wastewater. However, more anthropogenic uses and the continued demand for water have forced the facilities to operate at their maximum capacity. Therefore, the goal of this thesis is to obtain more compact systems for nutrient removal from domestic wastewater. In this sense, optimization and long-term stabilization of high volume exchange ratios reactors, treating higher volumes of wastewater, have been investigated. With the same target, aerobic granular sludge was proposed as a reliable alternative to reduce space and increase loading rates in treatment plants. However, the low organic loading rate from low-strength influents (less than 1 Kg COD•m-3d-1) results in slower granular formation and a longer time to reach a steady state. Because of that, different methodologies and operational conditions were investigated in order to enhance granulation and nutrient removal from domestic wastewater.
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机译：为了去除废水中的氮和磷，生物脱氮技术已经被研究并应用了数十年。然而，更多的人为用途和对水的持续需求迫使设施以最大容量运转。因此，本发明的目的是获得更紧凑的系统，用于从生活废水中去除营养。从这个意义上讲，已经研究了处理大量废水的高体积交换比反应器的优化和长期稳定性。为了达到相同的目标，提出了好氧颗粒污泥作为减少处理厂空间和增加处理量的可靠选择。但是，低浓度进水（小于1 Kg COD•m-3d-1）的低有机负荷率会导致颗粒形成速度变慢，并且达到稳态所需的时间更长。因此，研究了不同的方法和操作条件，以增强制粒和从生活污水中去除营养物的能力。
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