Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran; Department of Environmental Health Engineering, School of Public Health, Urmia University of Medical Sciences, Urmia, Iran.
Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
J Environ Manage. 2015 Jul 1;157:262-6. doi: 10.1016/j.jenvman.2015.02.036. Epub 2015 Apr 24.
The effect of ozonation catalyzed with MgO/granular activated carbon (MgO/GAC) composite as a pretreatment process on the performance of cyclic rotating-bed biological reactor (CRBR) for the catechol removal from wastewater has been investigated. CRBR with acclimated biomasses could efficiently remove catechol and its related COD from wastewater at organic loading rate (OLR) of 7.82 kg COD/m(3).d (HRT of 9 h). Then, OLR increased to 15.64 kg COD/m(3).d (HRT of 4.5 h) and CRBR failed. Catalytic ozonation process (COP) used as a pre-treatment and could improve the performance of the failed CRBR. The overall removal efficiency of the combined process attained respective steady states of 91% and 79% for degradation and COD removal of catechol. Therefore, the combined process is more effective in degradation and COD removal of catechol; it is also a viable alternative for upgrading industrial wastewater treatment plant.
采用 MgO/颗粒活性炭（MgO/GAC）复合催化剂对臭氧化预处理工艺进行了研究，考察了其对循环旋转床生物反应器（CRBR）处理废水中儿茶酚的性能的影响。经驯化的生物量在有机负荷率（OLR）为 7.82kg COD/m(3).d（水力停留时间为 9h）的条件下，可有效去除废水中的儿茶酚及其相关 COD。然后，OLR 增加到 15.64kg COD/m(3).d（水力停留时间为 4.5h），CRBR 失效。催化臭氧化工艺（COP）作为预处理，可以提高失效 CRBR 的性能。组合工艺的整体去除效率分别达到 91%和 79%，分别为儿茶酚的降解和 COD 的去除。因此，组合工艺在儿茶酚的降解和 COD 的去除方面更有效；它也是升级工业废水处理厂的可行替代方案。
