利用固相反硝化同时去除水中硝酸盐和4-氯酚

novel biodenitrification process, termed as “solid-phase denitrification”, was used to simultaneously remove nitrate and 4-chlorophenol (4-CP) from water. The experimental results indicate that nitrate can be effectively remove using biodegradable meal box (BMB) as carbon source and biofilm carrier of denitrifying microorganisms. Volumetric denitrification rate was 24.0mg/(L•h) with the 50mg/L of initial NO3--N concentration under the batch experiments. Denitrification was facilitated with 4-CP concentration less than 30mg/L, and was repressed with over 40mg/L of 4-CP. When the initial concentration of 4-CP was 5mg/L and 30mg/L, the removal efficiency of 4-CP was 90% and 71% within 8h under denitrifying condition, respectively. 4-CP removal was due to both the absorption onto BMB and degradation by microorganisms attached to BMB.