碳源和碳氮比对焦化废水反硝化工艺的影响

Influence of Carbon Source Type and Carbon -nitrogen Ratio on Denitrification Process of Coking Wastewater

以上海焦化厂焦化废水为原水，采用软性纤维填料床缺氧反应工艺研究了碳源和碳氢比对焦化废水反硝化工艺的影响．结果表明，投加甲醇这一类易于生物降解的物质对焦化废水进行反硝化时，不仅较大地提高了焦化废水的反硝化速率，而且可使出水ＣＯＤ进一步降低．

Coking wastewater of Shanghai Coke Plant was used as the raw sewage for investigating the influence of carbon source type and carbon-nitrogen ratio in denitrification process in attached-growth anoxic reactor packed with soft fibre medium. The experimental rosults indicated that, feeding easy biodegradation substance such as methanol during denitrification, not only did it enhanced the denitrification rate greatly, but also reduced the effluent COD value less than that of not feeding methanol condition.