Membrane bioreactor and integrated membrane bioreactor systems for micropollutant removal from wastewater: A review

Powdered Activated Carbon Exacerbates Fouling in MBR Treating Olive Mill Wastewater

“…The MLSS and effluent quality (BOD and DOC) in the PAC reactor were close to the control reactor (slightly higher in Run A and slightly lowerer in Run B (Table 2)). For the case of PAC addition, as expected and reported in previous work [11][12][13], the specific biodegradation rate of the PAC reactor was higher in both runs with respect to DOC and BOD biological removal (Table 1). Under such conditions, in which the PAC reactor performance was close to the control reactor and stabilized with lower VSS concentration (Table 1), we aimed at understanding the unexpected exacerbated fouling in MBR fed with PAC.…”

“…As a result, sessile microorganisms on AC were found to be highly resistant to disinfectants [10]. The functioning of an MBR loaded with powdered activated carbon (PAC) [11] was previously investigated for its ability to: (i) improve the stability of the microbial communities by providing a favorable surface for the creation of flocs [10], (ii) buffer the microbial response to sudden elevation in the organic matter in the feed, (iii) increase removal of micro-pollutants [12,13], and (iv) reduce the fouling propensity of the membrane, observed as an elevation in the critical flux [14]. Reduced membrane fouling was attributed to the adsorption of certain organic compounds present in the EPS of flocs, as well as in the SMP dissolved in the MBR's mixed liquor [15][16][17][18][19].…”

Food‐processing wastes

“…Gomes et al (2018) conducted experiments on the removal of pollutants from chicken processing plant (CPP) using electrocoagulation (EC) and found that a high degree of removal of many conventional pollutants such as COD, BOD, ammonia-N, oil and grease, and coliforms was achieved using EC. Goswami et al (2018) provided a consolidated review on the state of the art in MBR technology as a stand-alone treatment and in combination with other treatment technologies for removal of various micropollutants. They also assessed the sustainability and costs from a circular economy perspective.…”

Biorreatores com membranas no tratamento de efluentes de refinaria de petróleo: estudo de caso

“…O refino do petróleo acarreta a geração de uma quantidade significante de águas residuárias potencialmente poluidores. Ao serem lançados em corpos d'água sem devido tratamento, os efluentes das indústrias petrolíferas provocam desequilíbrio no ambiente, por transportarem compostos de difícil degradação e elevada ecotoxicidade (Goswami et al, 2018;Shokrollahzadeh et al, 2008). O tratamento convencional dos efluentes de águas residuárias de uma refinaria é feito em nível primário e secundário.…”

“…Como os MBRs oferecem várias vantagens sobre os processos biológicos convencionais no tratamento de águas residuárias, essa tecnologia tem sido extensivamente explorada e revisada na literatura (Goswami et al, 2018;Ma et al, 2018;Razavi & Miri, 2015;Vieiro et al, 2008). Vieiro et al 2008reportou elevadas eficiências de remoção de matéria orgânica e compostos fenólicos através do uso de MBR para tratamento de efluentes de refinaria, destacando o papel do processo de filtração por membranas em promover remoções adicionais de demanda química de oxigênio (DQO) e carbono orgânico total (COT), 17 e 20%, respectivamente.…”