Removal of endocrine disrupter compounds from municipal wastewater using an aerobic granular biomass reactor

Aerobic granules formation and nutrients removal characteristics in sequencing batch airlift reactor (SBAR) at low temperature

“…During stage D, COD was lowered from 1120 to 560 mg L −1 and the concentration of PO 4 3− -P increased from 12 to 24 mg L −1 , leading to a decrease in the COD/N/P ratio from 100:5:1 to 100:10:4. Based on the granular characteristics and the reactor performance, the start-up stage in this study was considered to be the period from day 1 to 76, while the stable stage was considered as the period from day 78 to end of the experiment.…”

“…The components and their concentrations in the synthetic wastewater were listed as follows: glucose, 520 mg L −1 , sodium acetate 830 mg L −1 , NH 4 Cl 240 mg L −1 , K 2 HPO 4 58 mg L −1 , KH 2 PO 4 24 mg L −1 , CaCl 2 ·2H 2 O 65 mg L −1 , MgSO 4 ·7H 2 O 40 mg L −1 , EDTA 40 mg L −1 , NaHCO 3 80 mg L −1 , and trace element solution 1 mL L −1 , which gave a total COD concentration of 1.2 g L −1 , an NH 4 + -N concentration of 56 mg L −1 , and a PO 4 3− -P concentration of 12 mg L −1 . The trace element solution contained the following components: 4 3− -P, and mixed liquor suspended solids (MLSS) were analyzed according to the Standard Methods [19].…”

“…The trace element solution contained the following components: 4 3− -P, and mixed liquor suspended solids (MLSS) were analyzed according to the Standard Methods [19]. DO and pH were measured by the electrometer (pH/oxi 340i, WTW, Germany) with respective probes (Cellox ® 325; SenTix 41).…”

“…Aerobic granulation technology was developed to treat different kinds of wastewater, such as high strength wastewater and toxic wastewater containing xenobiotics, 2,4-dichlorophenol, phenol, and endocrine disrupters [2][3][4][5]. Mature aerobic granules obtained from self-immobilization of bacteria under aerobic condition are characterized by a regular round shape, a clear outline and a compact microbial structure.…”

Toxicidade ambiental de efluentes advindo de diferentes laboratórios de uma farmácia magistral

“…(Proia et al, 2013). Como exemplo, podemos citar estudos que avaliaram a remoção de estrógeno a partir da utilização de um sistema de filtro biológico em conjunto com o óxido de manganês (MnO2) e que obtiveram remoção de 81,7% de atividade, ou a partir de uma nova tecnologia, com recirculação e maior oxigenação (Balest et al, 2008;Rudder et al, 2004). Nos processos biológicos, por exemplo, a eficiência de degradação é fortemente influenciada pela presença de outros macroconstituintes, o que faz com que a degradação dos fármacos, além de ocasional, seja apenas parcial.…”