复合碳源对焦化废水反硝化脱氮性能的影响探究

Composite Carbon Source for Exploring the Impact on Denitrification Performance in Coking Wastewater Treatment

摘要: 焦化废水成分复杂，含有大量的酚类、氨氮、苯等有毒有害物质，难以处理，又因为其中BOD含量较低，难以维持生化污泥法中微生物生长繁殖，更加容易造成反硝化过程中容易碳源不足，影响后续反硝化脱氮，因此在生化反硝化脱氮一直是整个行业的难点，备受焦化行业关注。本文分析研究在焦化废水处理工艺中使用后置反硝化池分别加入乙酸钠与复合碳源，对比出水中的COD、总氮、吨水处理成本、处理总氮成本，复合碳源均有较大优势，达到了降本增效的目的。

Abstract: Coking wastewater has a complex composition and contains a large amount of toxic and harmful substances such as phenols, ammonia nitrogen, and benzene, which are difficult to treat. Moreover, due to its low BOD content, it is difficult to maintain the growth and reproduction of microorganisms in the biochemical sludge process, making it more prone to carbon source shortage during denitrification, which affects subsequent denitrification. Therefore, biochemical denitrification has always been a difficult point in the entire industry and has attracted much attention from the coking industry. This article analyzes and studies the use of post denitrification tanks to add sodium acetate and composite carbon sources in coking wastewater treatment processes. By comparing the COD, total nitrogen, ton water treatment cost, and total nitrogen treatment cost in the effluent, the composite carbon source has significant advantages, achieving the goal of cost reduction and efficiency improvement.