新型反硝化滤池设备脱氮效果中试

Pilot Test of Denitrification Effect of New Type Denitrification Filter Equipment

为了应对日益严格的总氮出水要求,增强市政污水厂应对总氮负荷冲击能力,同时进一步减少污水处理成本,在某市政污水处理厂进行了新型自养-异养协同反硝化滤池设备的脱氮效果中试试验。通过在厂区内新建“自养-异养协同反硝化滤池”中试装置,检验了在不投加碳源条件下该装置的工程应用脱氮效果。结果表明:通过该反硝化滤池的作用,无需外加有机碳源,其中总氮和硝态氮平均出水浓度分别低于5 mg/L和3 mg/L,平均去除率分别为70.3%和72.6%,保证了稳定高效的脱氮效果。

In order to meet the increasingly stringent requirements of total nitrogen discharge,and enhance the capacity of municipal wastewater treatment plants to cope with the impact of total nitrogen load,and further reduce the cost of sewage treatment,this study conducted a pilot study of the denitrification effect of a new type of heterotrophic-autotrophic denitrification filter in a municipal wastewater treatment plant.A pilot plant of“heterotrophic-autotrophic synergistic denitrification filter”was built in the plant,and the denitrification effect of the plant without adding carbon source was tested.The results showed that the average total nitrogen and nitrate can be realized to less than 5 mg/L and 3 mg/L and the average removal rate is 70.3%,72.6% in the filter,which ensures stable and efficient denitrification effect.