MBBR工艺对高含盐废水中氨氮的硝化效果研究

Nitrification of Ammonia Nitrogen in High Salinity Wastewater by MBBR Process

石油炼制催化剂生产企业排放的生产废水具有高TDS、高氨氮、低COD等特点。采用移动床生物膜反应器(MBBR)中试装置,通过调整不同进水TDS值,验证不同TDS下MBBR工艺对氨氮的硝化能力。试验表明,MBBR工艺在经过微生物的驯化后,当进水TDS值<42 g/L时,对氨氮的去除率能够达到90%左右,进水TDS超过该值则会产生较强的生物抑制性。

Wastewater discharged from petroleum refining catalyst manufacturing enterprises has characteristics such as high total dissolved solids （TDS）, high ammonia nitrogen, and low COD. This study used a MBBR pilot plant to verify impacts of TDS on ammonia nitrogen nitrification in the MBBR process, through adjusting TDS in the influent. The results showed that, after the microbial acclimation, when influent TDS was less than 42 g/L, the MBBR process was able to remove approximately 90% of ammonia nitrogen; when the influent TDS exceeded this concentration, a strong biological inhibition was observed.