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NTIS 바로가기대한환경공학회지 = Journal of Korean Society of Environmental Engineers, v.38 no.8, 2016년, pp.428 - 434
신소연 (강원대학교 환경공학과) , 김종호 (전남대학교 응용화학공학부) , 안종화 (강원대학교 환경공학과)
This study evaluated the efficacy of Ti-based coagulants on phosphorus (P) removal from municipal wastewater and compared them with Al-based coagulants. Jar test experiments were performed at various chemical doses and OH/Ti molar ratio (B value). The higher the intial phosphate (
핵심어 | 질문 | 논문에서 추출한 답변 |
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폴리머 응집제의 장점은 무엇인가? | 기존 알루미늄계열, 철염계열 응집제들은 poly aluminium chloride (PAC), poly ferric chloride (PFC) 등과 같은 폴리머 응집제가 개발되어져왔다. 폴리머 응집제는 단위체 응집제에 비해 제거효율이 좋으며 응집 후 잔류 이온농도가 낮고 응집 후 pH가 적게 감소하는 장점이 있다.15) 티타늄계열 응집제 역시 폴리머 응집제에 대한 연구가 이루어지고 있지만 유기물, 탁도 등의 제거에 초점을 맞춰 왔으며,16,17) 인 제거에 대한 연구는 본 연구진을 제외하고 국내외에서 찾아볼 수 없다. | |
응집제와 인의 몰 비는 어떻게 표현하였는가? | 19)흡광도를 측정하기 위하여 UV-Vis spectrophotometer (Libra S60, Biochrom, UK)를 사용하였고, DOC는 total organic carbon (TOC) 분석장치(TOC-VCPH, Shimadzu, Japan)를 사용하여 측정하였다. 응집제와 인의 몰 비는 주입된 응집제의 몰농도를 하수 내 인의 몰농도로 나눈 값으로 표현하였다. | |
알루미늄계열, 철염계열 응집제는 환경에 어떤 영향을 끼치는가? | 금속염 응집제는 응집 후 잔류 이온이 수중에 존재하게 된다.3) 알루미늄의 경우 생체 내 축적될 경우 신경계질환을 일으킬 수 있는 가능성이 있는 것으로 알려져 있으며,4) 철염의 경우에는 어류 등에 영향을 미치는 등 환경에 2차 오염을 일으킬 수 있는 것으로 알려져 있다.5) 또한 기존 응집제들은 많은 하수슬러지를 발생시키는 문제점을 가지고 있다. |
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