弹性填料微孔曝气生物膜法修复污染水源除NH_4^+ -N

Removal of NH_4^+-N from Polluted Water Resources by Bioremediation of Biofilm Process with Elastic Packing & Micropore Aerator

采用弹性填料微孔曝气生物接触氧化法对受污染的水源进行修复除NH4+ N效果研究 .结果表明 ,在正常水温 2 0℃～ 2 7℃条件下 ,当污染水源CODMn7～ 1 4mg L ,NH4 + N 0 7～ 2 0mg L和生物修复工艺运行参数HRT为1 4h ,气∶水 =0 5∶1 ,DO为 7～ 9mg L时 ,生物修复工艺可去除水源中的NH4 + N为 64%～ 95% ;在较低水温 7℃～ 1 2℃条件下 ,当污染水源CODMn6～ 1 1mg L ,NH4 + N 1 2～ 8 0mg L和生物修复工艺运行参数HRT为 1 4h ,气∶水 =0 5∶1 ,DO为 8～ 1 0mg L时 ,生物修复工艺可去除水源中的NH4+ N为 4 0 %～ 63% .

The effect of NH + 4-N removal in the polluted raw water of water sources by the bioremediation action of the biocontact oxidation process with the elastic packing and micropore aerator was studied in this paper. The research results showed the bioremediation process can reach a removal ratio of 64%～95% for NH 4 +-N of water sources under the condition of ordinary temperature 20℃～27℃ , COD Mn 7～14mg/L , NH 4 +-N 0.7～2.0mg/L in the water sources and the running parameters HRT 1.4h , gas and water ratio 0.5∶1 , and DO 7～9 mg/L for the bioremediation process and a removal ratio of 40%～63% for NH 4 +-N of water sources under the condition of low temperature 7℃～12℃ , COD Mn 6～11mg/L , NH 4 +-N 1.2～8.0mg/L in the water sources and the running parameters HRT 1.4h , gas and water ratio 0.5∶1, and DO 8～10mg/L for the bioremediation process.