Department of Chemical Engineering, Dankook University, Republic of Korea.
School of Civil and Environmental Engineering, University of Technology, Broadway, Sydney, NSW 2007, Australia.
Bioresour Technol. 2014 Feb;153:116-25. doi: 10.1016/j.biortech.2013.11.048. Epub 2013 Nov 27.
This paper evaluated a novel pilot scale hybrid treatment system which combines rotating hanging media bioreactor (RHMBR), submerged membrane bioreactor (SMBR) along with electrocoagulation (EC) as post treatment to treat organic and nutrient pollutants from municipal wastewater. The results indicated that the highest removal efficiency was achieved at the internal recycling ratio as 400% of the influent flow rate which produced a superior effluent quality with 0.26mgBOD5L(-1), 11.46mgCODCrL(-1), 0.00mgNH4(+)-NL(-1), and 3.81mgT-NL(-1), 0.03mgT-PL(-1). During 16months of operation, NH4(+)-N was completely eliminated and T-P removal efficiency was also up to 100%. It was found that increasing in internal recycling ratio could improve the nitrate and nitrogen removal efficiencies. Moreover, the TSS and coliform bacteria concentration after treatment was less than 5mgL(-1) and 30MPNmL(-1), respectively, regardless of internal recycling ratios and its influent concentration.
本文评估了一种新型的中试规模混合处理系统，该系统结合了旋转悬挂式生物膜反应器（RHMBR）、浸没式膜生物反应器（SMBR）以及电絮凝（EC）作为后处理工艺，用于处理城市废水中的有机和营养污染物。结果表明，在内部回流比为进水流量的 400%时，去除效率最高，产生了优质的出水水质，BOD5 为 0.26mg/L、CODCr 为 11.46mg/L、NH4(+)-N 为 0.00mg/L、TN 为 3.81mg/L、TP 为 0.03mg/L。在 16 个月的运行期间，NH4(+)-N 被完全去除，TP 的去除效率也达到了 100%。结果发现，增加内部回流比可以提高硝酸盐和氮的去除效率。此外，处理后的 TSS 和大肠菌群浓度均小于 5mg/L 和 30MPN/mL，无论内部回流比和进水浓度如何。
