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污泥回流分离工艺(RSSP)除磷脱氮试验研究

Keywords: RSSP,污泥浓缩,气浮,脱氮除磷

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Abstract:

介绍了一种新型的脱氮除磷工艺——回流污泥分离工艺(returnsludgeseparateprocess),及其运行情况。该工艺在传统的厌氧缺氧好氧(A2/O)的模式下,针对硝酸盐对厌氧释磷的抑制问题进行改进,提出回流污泥的气浮浓缩分离方案,以提高系统的脱氮除磷效果。研究结果表明,在进水COD为250~400mg/L,NH+4-N为30~45mg/L,PO3-4-P为8~10mg/L左右时,该工艺对NH+4-N和PO3-4-P的去除率分别可达79.3%和95%。该系统与A2/O的平行比较数据表明,该系统能够提高氮磷综合处理效率,解决A2/O处理工艺中存在无效释磷和硝酸根抑制问题。

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