Majumder Partha Sarathi, Gupta S K
Centre for Environmental Science and Engineering, Indian Institute of Technology, Powai, Mumbai, India.
Bioresour Technol. 2009 Mar;100(5):1881-3. doi: 10.1016/j.biortech.2008.10.002. Epub 2008 Nov 18.
This study was carried out to determine the effect of influent pH and alkalinity on the performance of sequential UASB and RBC reactors for the removal of 2-CP and 2,4-DCP from two different simulated wastewaters. The performance of methanogens at low (<6.0) to high (>8.0) pH values and at sufficiently high alkalinity (1500-3500 mg/l as CaCO(3)) is described in this paper. Sequential reactors were capable of handling wastewaters with influent pH, 5.5-8.5. However, with influent pH 7.0+/-0.1 UASB reactor showed best performance for 2-CP (99%) and 2,4-DCP (88%) removals. Increase in alkalinity/COD ratio in the influent (>1.1) caused gradual decrease in the chlorophenol removal in UASB reactors. The UASB reactors could not tolerate wastewater with higher alkalinity/COD ratio (2.6) and showed significant deterioration of its performance in terms of chlorophenols removal achieving only 74.7% 2-CP and 60% 2,4-DCP removals, respectively.
本研究旨在确定进水pH值和碱度对串联式上流式厌氧污泥床（UASB）和生物转盘（RBC）反应器从两种不同模拟废水中去除2-氯酚（2-CP）和2,4-二氯酚（2,4-DCP）性能的影响。本文描述了产甲烷菌在低（<6.0）至高（>8.0）pH值以及足够高的碱度（1500 - 3500 mg/l以碳酸钙计）条件下的性能。串联式反应器能够处理进水pH值为5.5 - 8.5的废水。然而，进水pH值为7.0±0.1时，UASB反应器对2-CP（99%）和2,4-DCP（88%）的去除表现最佳。进水碱度/化学需氧量（COD）比增加（>1.1）会导致UASB反应器中氯酚去除率逐渐降低。UASB反应器无法耐受较高碱度/COD比（2.6）的废水，并且在氯酚去除方面其性能显著恶化，2-CP和2,4-DCP的去除率分别仅达到74.7%和60%。
