Over the last 30 years, a number of biological treatment processes have emerged for treating high‐strength ammonia liquors arising from the dewatering of anaerobic digestate. The AMTREAT® process was the first process to become established and recognised as a viable and reliable process to treat these high‐strength ammonia liquors. The process is a high‐rate activated sludge plant supplied by ACWA Services Ltd. The first full‐scale plant was installed in 1995, treating centrate produced when dewatering anaerobically digested sludge. The process is a compact, high‐rate ammonia treatment system, which has a relatively small footprint compared to conventional activated sludge treatment processes. Originally designed to fully nitrify dewatering ammonia liquors by controlling the environmental conditions of the treatment reactor, the process has evolved first to include alkalinity recovery and subsequently to offer total nitrogen removal. This paper discusses the development of the AMTREAT® process from its initial development in 1992, to the modern day third generation plants which achieve typical achieve ammonia removal exceeding 99% and total nitrogen removal in excess of 80%.

中文翻译：

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25年的AMTREAT®工艺处理高强度氨液

在过去的30年中，出现了许多生物处理工艺来处理厌氧消化液脱水产生的高强度氨液。AMTREAT®工艺是第一个被确立并被认为是处理这些高强度氨液的可行且可靠的工艺的工艺。该过程是ACWA Services Ltd提供的高速率活性污泥处理厂。1995年安装了第一座大型污泥处理厂，用于处理厌氧消化的污泥脱水时产生的离心液。该工艺是紧凑的高速率氨处理系统，与传统的活性污泥处理工艺相比，占地面积较小。最初旨在通过控制处理反应器的环境条件将硝化的氨液完全硝化，该方法首先发展为包括碱度回收，然后提供总氮去除。本文讨论了AMTREAT®工艺的发展，从1992年的最初开发到现代的第三代工厂，这些工厂典型地实现了氨去除率超过99％，总氮去除率超过80％。