利用固相反硝化同时去除水中硝酸盐和4-氯酚

研究了固相反硝化技术同时去除水中硝酸盐和4-氯酚的可行性.结果表明，以可降解餐盒为碳源和微生物附着载体进行异养反硝化，能有效去除水中的硝酸盐.在批式实验条件下，当NO^-₃-N初始浓度为50 mg/L时，平均反硝化速率为24.0 mg/(L·h).当4-氯酚浓度低于30 mg/L时，对反硝化脱氮有促进作用；大于40 mg/L时，对反硝化有抑制作用.在反硝化条件下，当4-氯酚的初始浓度分别为5 mg/L和30 mg/L时，8　h后其去除率分别为90%和71%，4-氯酚的去除是由于可降解餐盒的吸附作用及附着微生物的降解作用.

Simultaneous Removal of Nitrate and 4-chlorophenol from Contaminated Water Using Solid-Phase Denitrification Process

A novel biodenitrification process,termed as "solid-phase denitrification",was used to remove nitrate and 4-chlorophenol (4-CP) from water. The experimental results indicate that nitrate can be effectively removed using biodegradable meal box (BMB) as carbon source and biofilm carrier of denitrifying microorganisms. Volumetric denitrification rate was 24.0 mg/(L·h) with the 50 mg/L of initial NO-3-N concentration under the batch experiments. Denitrification was facilitated with 4-CP concentration which was less than 30 mg/L,and was repressed with over 40 mg/L of 4-CP. When the initial concentration of 4-CP was 5 mg/L and 30 mg/L,the removal efficiency of 4-CP was 90% and 71% within 8 h under denitrifying condition,respectively. 4-CP removal was due to both the absorption onto BMB and degradation by microorganisms attached to BMB.