生物活性碳反应器强化生活污水同步硝化反硝化:C/N影响研究

Biological Activated Carbon Reactor Enhanced Domestic Sewage Simultaneous Nitrification and Denitrification: Effect of C/N

在生物活性碳(BAC)反应器中探究了C/N对实际生活污水同步硝化反硝化的影响。结果表明C/N对化学需氧量(COD)的去除影响不明显,然而对NH+4-N和总氮(TN)的去除影响较显著。随C/N由3.2升高至7.2,NH+4-N的去除效率由81%升高至91%,TN的去除效率也由35%升高至68%。然而继续升高C/N至9.1,NH+4-N和TN的去除效率却分别下降至87%和51%。生物活性碳反应器处置实际污水的最佳C/N为7.2。较传统SBR活性污泥反应器,BAC反应器能够依赖活性碳实现溶解氧区域化,从而有助于反硝化过程。

The effect of C/N on simultaneous nitrification and denitrification（ SND） of domestic sewage was investigated in a biological activated carbon（ BAC） reactor. The results showed that C/N had no significant effect on COD removal,but had significant effects on the removal of NH＋4-N and total nitrogen（ TN）. With the increase of C/N from 3. 2 to 7. 2,the removal efficiency of NH＋4-N increased from 81% to 91%,and the removal efficiency of TN increased from 35% to 68%. However,with increasing C/N to 9. 1,the removal efficiencies of NH＋4-N and TN decreased to 87% and 51%,respectively. The optimum C/N for the bioreactor reactor to dispose of the actual wastewater was 7. 2. Compared with the traditional SBR activated sludge reactor,the BAC reactor can rely on activated carbon to achieve dissolved oxygen regionalization,which can contribute to the denitrification process.