최욱진 이병하 박준홍 차호영 이병찬 송경근 2024-01-19T23:31:43Z 2024-01-19T23:31:43Z 2021-09-06 2018-02 1225-7672 https://pubs.kist.re.kr/handle/201004/121731 This study investigated phosphorus removal from secondary treated effluent using coagulation-membrane separation hybrid treatment to satisfy strict regulation in wastewater treatment. The membrane separation process was used to remove suspended phosphorus particles after coagulation/settlement. Membrane separation with 0.2 μm pore size of micro filtration membrane could reduce phosphorus concentration to 0.02 mg P/L after coagulation with 1 mg Al/L dose of polyaluminum chloride (PACl). Regardless of coagulant, the residual concentration of phosphorus decreased as the dose increased from 1.5 to 3.5 mg Al/L, while the target concentration of 0.05 mg P/L or less was achieved at 2.5 mg Al/L for the aluminum sulfate (Alum) and 3.5 mg Al/L for PACl. Moreover, alum showed better membrane flux as make bigger particles than PACl. Alum showed a 40% of flux decrease at 2.5 mg Al/L dose, while PACl indicated a 50% decrease of membrane flux even with a higher dose of 3.5 mg Al/L. Thus, alum was more effective coagulant than PACl considering phosphorus removal and membrane flux as well as its dose. Consequently, the coagulation-membrane separation hybrid treatment could be mitigate regulation on phosphorus removal as unsettleable phosphorus particles were effectively removed by membrane after coagulation. Korean 대한상하수도학회 하수 2차처리 방류수의 총인 고효율 처리를 위한 응집·막분리 혼성처리 Coagulation-membrane separation hybrid treatment of secondary treated effluent for high efficiency phosphorus removal Article 10.11001/jksww.2018.32.1.047 2 상하수도학회지, v.32, no.1, pp.47 - 53 상하수도학회지 32 1 47 53 kci ART002314740 응집 고효율제거 막분리 인제거 하수처리 Coagulation High efficiency removal Membrane separation Phosphorus removal Wastewater treatment