厌氧生物处理工艺的运行管理
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在消化池进行正式投产运行之前,需要进行清水试验,用以检查消化池本身是否存在漏水、漏气的问题;
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随后就可以向消化池中投放接种污泥,接种污泥通常来自于已经成功运行的消化池中的污泥,投放之前要采用滤网(2*2或5*5mm)进行过滤。
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接种污泥投放之后,就可以少量的投加浓缩后的生污泥;
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对产气量、沼气的成分、pH、上清液的VFA(挥发性脂肪酸)等指标进行检测;
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消化池正常运行后,就可以逐步增加投泥量,经过50~60天就可以达到设计时的负荷。
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使用污泥启动,培养出颗粒污泥,通常需要1~3个月的时间一般分为启动期、颗粒污泥形成期和颗粒污泥成熟期;
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对于接种污泥,通常采用厌氧污泥消化池中的厌氧污泥;
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培养过程中要求水温,pH等环境条件要稳定;
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反应器中的污泥负荷需要控制在0.05~0.1kgCOD/(kgSS·d),容积负荷则要小于0.5kgCOD/(m³·d);
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VFA浓度需要保持在一个较低的浓度;
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为了淘汰部分絮状污泥,表面水力负荷要大于0.3m³/(㎡·d);
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进水中可以适当的提供无机颗粒(钙、铁等),必要时适当补充微量金属元素(镍、钴、钼等),促进产甲烷菌的生长;

颗粒污泥的形状多种多样,呈现出球形、卵形、丝状等;
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平均粒径1mm,粒径通常在0.1~2mm之间,最大的也能达到3~5mm;
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颜色多为黑色、灰色和灰白色,也会出现黄色或铁红色。
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