新兴污染物去除的吸附-生物耦合工艺研究进展：去除效率、物理化学分析和经济评价。
A review of the adsorption-biological hybrid processes for the abatement of emerging pollutants: Removal efficiencies, physicochemical analysis, and economic evaluation.
机构信息
Catalysis, Reactors, and Control Research Group (CRC), Department of Chemical and Environmental Engineering, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain.
Catalysis, Reactors, and Control Research Group (CRC), Department of Chemical and Environmental Engineering, University of Oviedo, Julián Clavería s/n, 33006 Oviedo, Spain.
出版信息
Sci Total Environ. 2021 Aug 1;780:146554. doi: 10.1016/j.scitotenv.2021.146554. Epub 2021 Mar 18.
The limited efficiency of conventional wastewater treatment plants (WWTPs) in emerging pollutants (EPs) removal encourages the development of alternative technologies for the adequate treatment of wastewater, due to its adverse effects on human health and ecosystems. The biological, physical or chemical hybrid technologies to treat EPs results interesting since they can enhance the performance of WWTPs. Among them, hybrid adsorption/biological technology could offer different possibilities that are explored in this work (PAC-MBR, PACT/GAC-CAS, BAC configurations). In this way, different variations in the adsorption process have been considered: the form of the adsorbent, the feed to the system, and the type of biological process, either conventional activated sludge (CAS), membrane bioreactor (MBR) or biofilm systems. For each combination, the removal efficiency of micropollutants, classified according to their use into pharmaceuticals, personal care products (PCPs) and other micropollutants (mainly benzotriazoles) was analysed. From reported data, it was observed a beneficial synergistic effect of dipole moment and octanol-water partition coefficient on the removal efficiency of micropollutants by adsorption/biological hybrid technology. Finally, a preliminary economic evaluation of the powdered activated carbon in a conventional activated sludge reactor (PACT), powdered activated carbon-membrane bioreactor (PAC-MBR) and biological activated carbon (BAC) hybrid systems was carried out by analysing the capital expenditure (CAPEX) of plants for capacities up to 75,000 md. Likewise, estimations of adsorbent concentration for a hypothetical plant with a capacity of 10,000 md is presented. Among these hybrid configurations, PAC-MBR achieved the highest micropollutant elimination percentages; however, it presents the highest CAPEX and activated carbon requirements.
传统污水处理厂（WWTP）对新兴污染物（EPs）去除效率有限，这促使人们开发替代技术来对废水进行充分处理，因为这些污染物对人类健康和生态系统有不良影响。生物、物理或化学混合技术用于处理 EPs 具有很大的意义，因为它们可以提高 WWTP 的性能。在这些技术中，混合吸附/生物技术可以提供不同的可能性，这是本文所探索的（PAC-MBR、PACT/GAC-CAS、BAC 配置）。在这种方式下，对吸附过程进行了不同的变化考虑：吸附剂的形式、进入系统的进料和生物过程的类型，无论是传统的活性污泥（CAS）、膜生物反应器（MBR）还是生物膜系统。对于每种组合，都分析了根据用途分类的药品、个人护理产品（PCPs）和其他微污染物（主要是苯并三唑）的去除效率。从报告的数据中，观察到吸附/生物混合技术对微污染物去除效率具有偶极矩和辛醇-水分配系数的有益协同效应。最后，通过分析 CAPEX（资本支出），对传统活性污泥反应器（PACT）、粉末活性炭-膜生物反应器（PAC-MBR）和生物活性炭（BAC）混合系统中的粉末活性炭进行了初步的经济评估，容量高达 75,000md。同样，还提出了针对容量为 10,000md 的假想工厂的吸附剂浓度估算。在这些混合配置中，PAC-MBR 实现了最高的微污染物去除率；然而，它的 CAPEX 和活性炭需求最高。
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