多因素对CASS反应器内反硝化除磷污泥脱氮除磷性能的影响

Effect of multiple factors on nitrogen and phosphorus removal performance of denitrifying phosphorus removal sludge in cass reactor

以CASS反应系统中的反硝化除磷污泥为研究对象,考察温度、COD、硝酸盐浓度、N/P比对污泥脱氮除磷性能的影响。结果表明,CASS系统中反硝化除磷污泥最佳反应温度为30℃,COD浓度为400 mg/L时污泥释磷效率最高。硝酸盐浓度高于15 mg/L时,释磷作用受到明显抑制。N/P为2时,可获得较好的脱氮除磷效果。

The effects of temperature,COD,nitrate concentration and N/P ratio on nitrogen and phosphorus removal of denitrifying phosphorus removal sludge in CASS reaction system were investigated.The result showed that the optimal reaction temperature of denitrifying phosphorus removal sludge was 30℃and COD concentration was 400 mg/L.The sludge had the highest phosphorus release efficiency.When nitrate concentration was higher than 15 mg/L,phosphorus release was significantly inhibited.When N/P ratio was 2,better nitrogen and phosphorus removal effect could be obtained.