将采用一级反应器系统的概念,用于对高负载铵侧流的亚硝酸盐进行生物脱氮,以从厌氧消化的污水污泥中去除氮并实现其完全稳定。处理污泥,反硝化所需的有机物质作为颗粒基质存在于流入物中,这需要水解步骤。后者意味着高缺氧水力停留时间(HRT)。在有氧和缺氧阶段,铵被释放,这意味着需要扩大需氧HRT。两种效应都导致总HRT高于具有可溶性底物的废水的硝化-反硝化。本文的目的是定义,通过计算机模拟,一套理论标准,稍后将应用于位于西班牙污水处理厂的中试规模后曝气反应器的运行。这些标准将通过模拟不同操作条件下的反应器性能来定义。作为结论,在有氧和缺氧保留时间方面,已经为上述情况建立了一些操作指南,溶解氧浓度和流出物要求(NH(4)(+),NO(2)(-)和NO(3)(-))。
The concept of one-stage reactor system for biological nitrogen removal over nitrite of ammonium high loaded sidestreams is going to be applied to remove nitrogen from anaerobically digested sewage sludge and to achieve its complete stabilisation. Dealing with sludge, the organic matter needed to denitrify is present in the inflow as particulate substrate, which requires a hydrolysis step. The latter implies high anoxic hydraulic retention time (HRT). During both aerobic and anoxic phases, ammonium is released which implies the need to enlarge aerobic HRT. Both effects lead to a total HRT higher than those for nitrification-
denitrification of wastewater with soluble substrate. The purpose of this paper is to define, by computer simulation, a set of theoretical criteria, which will be applied later to the operation of a pilot-scale post-aeration reactor to be located in a Spanish WWTP. These criteria will be defined by simulating the reactor performance under different operating conditions. As a conclusion, some operation
guidelines have been established for the above-mentioned scenario in terms of aerobic and anoxic retention time, dissolved oxygen concentration and effluent requirements (NH(4)(+), NO(2)(-) and NO(3)(-)).