Ekama G A, Sötemann S W, Wentzel M C
Water Research Group, Department of Civil Engineering, University of Cape Town, Rondebosch, 7701, Cape, South Africa.
Water Res. 2007 Jan;41(1):244-52. doi: 10.1016/j.watres.2006.08.014. Epub 2006 Oct 11.
From an experimental and theoretical investigation of the continuity of activated sludge organic (COD) compounds along the link between the fully aerobic or N removal activated sludge and anaerobic digestion unit operations, it was found that the unbiodegradable particulate organics (i) originating from the influent wastewater and (ii) generated by the activated sludge endogenous process, as determined from response of the activated sludge system, are also unbiodegradable under anaerobic digestion conditions. This means that the activated sludge biodegradable organics that can be anaerobically digested can be calculated from the active fraction of the waste activated sludge based on the widely accepted ordinary heterotrophic organism (OHO) endogenous respiration/death regeneration rates and unbiodegradable fraction. This research shows that the mass balances based steady state and dynamic simulation activated sludge, aerobic digestion and anaerobic digestion models provide internally consistent and externally compatible elements that can be coupled to produce plant wide steady state and dynamic simulation WWTP models.
通过对活性污泥中有机（化学需氧量）化合物在完全好氧或脱氮活性污泥与厌氧消化单元操作之间联系的连续性进行实验和理论研究，发现源自进水废水以及由活性污泥内源过程产生的不可生物降解的颗粒有机物（i）和（ii）（根据活性污泥系统的响应确定）在厌氧消化条件下也是不可生物降解的。这意味着，可以基于广泛接受的普通异养生物（OHO）内源呼吸/死亡再生速率和不可生物降解部分，从废弃活性污泥的活性部分计算出可进行厌氧消化的活性污泥可生物降解有机物。这项研究表明，基于质量平衡的稳态和动态模拟活性污泥、好氧消化和厌氧消化模型提供了内部一致且外部兼容的元素，这些元素可以耦合以生成全厂范围的稳态和动态模拟污水处理厂模型。
