Fe^0对SBBR工艺处理腈纶废水性能影响

Effect of Fe^0 on acrylic fiber wastewater treatment in SBBR

以吉林某化纤集团公司污水处理车间腈纶废水为对象,通过平行对比试验考察了Fe0对SBBR反应器处理腈纶废水性能的影响。结果表明:(1)添加Fe0可提高SBBR反应器的启动速率;(2)在反应器进入稳定运行阶段后,添加Fe0的2#反应器与对照组1#反应器的CODCr平均去除率分别为70.7%和60.5%,NH3-N平均去除率分别为60.6%和13.5%,外加Fe0的SBBR反应器CODCr与NH3-N平均去除率分别提高了10.2%和47.1%;(3)添加Fe0的2#反应器的MLSS与MLVSS分别是对照组1#反应器的1.60倍和1.35倍。同时,添加Fe0更有利于异养型硝化菌——产碱杆菌属的生长,从而大大提高了反应器NH3-N的去除率。

In this paper,taking acrylic wastewater from the sewage treatment workshop of a chemical fiber company in Jilin as an object,the effect of Fe0 on acrylic wastewater treatment in SBBR reactor was studied via parallel comparison test.The test results showed that：（1）It could improve the start-up rate of SBBR reactor by adding Fe0.（2）While the reactor was at the stable operation stage,in 2# reactor with added Fe0 and 1# reactor without adding Fe0,the average removal rates of CODCr were 70.7% and 60.5% and the average removal rate of NH3-N were 60.6% and 13.5%,respectively.The average removal rate of CODCr and NH3-N were improved by 10.2% and 47.1% by adding Fe0.（3）The mixed liquor suspended solids（MLSS）and mixed liquor volatile suspended solids（MLVSS）in 2# reactor with added Fe0 were 1.60 and 1.35 times than those in 1# reactor,respectively.Adding Fe0 was beneficial to the growth of heterotrophic nitrification bacteria—Alcaligenes sp.,thus significantly improving NH3-N removal rate.