간행물

한국수처리학회지 update

Journal of Korea Society of Water Science and Technology

  • : 한국수처리학회(구 한국수처리기술연구회)
  • : 공학분야  >  환경공학
  • : KCI등재
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  • : 연속간행물
  • : 격월
  • : 1225-7192
  • : 2289-0076
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수록정보
수록범위 : 1권1호(1993)~28권4호(2020) |수록논문 수 : 1,332
한국수처리학회지
28권4호(2020년 08월) 수록논문
최근 권호 논문
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KCI등재

1슬러지에서 제조한 TiO2와 시멘트가 혼합된 시편의 유기염료 제거효율 평가

저자 : 여우석 ( Wooseok Yeo ) , 김종규 ( Jong Kyu Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 3-14 (12 pages)

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This study investigates the photocatalytic decomposition of Methylene Blue (MB) under sunlight (ultraviolet light) by titanium dioxide produced from sludge called (TFS) compared to the widely used titanium dioxide (P-25). For the experiment, three types of specimen were prepared: 1) cement, 2) cement mixed with TiO2 (P-25) and 3) cement mixed with TFS; and two types of cement were tested for the cement materials: Type 1 normal Portland cement and Ultra rapid hardening cement. The removal rate of MB was identical as 99.2% for TFS and P-25 when Type 1 normal Portland cement was used. However, the removal rates differed as 92% for TFS and 98% for P-25 when Ultra rapid hardening cement was applied. This result shows that TFS possess the photocatalytic efficiency similar to that of P-25. When TFS was mixed as a catalyst, the MB removal rate was increased when Type 1 normal Portland cement was used as a binder compared to when Ultra raid hardening cement was applied. The optimal condition for the synthesis of TFS with Type1 normal Portland cement was determined as mixing ratio of 27.079% with the reaction time of 118.186 minutes. Therefore, it can be concluded that TFS could potentially be applied as a photocatalyst in the field as it shows similar photocatalytic activities of P-25 under ambient sunlight (ultraviolet).

KCI등재

2자외선/H2O2 처리시 남조류 기인 유기물 특성이 수산화 라디칼 반응성 및 운전조건에 미치는 영향

저자 : 남숙현 ( Sookhyun Nam ) , 이주원 ( Juwon Lee ) , 김은주 ( Eunju Kim ) , 황태문 ( Tae-mun Hwang )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 15-23 (9 pages)

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This study interrogates the influence of algal organic matter on hydroxyl radial (ㆍOH) scavenging factors. The ㆍOH scavenging factor represents the rate at which ㆍOH is scavenged by background substances in aqueous solutions, which is key to the design and operation of UV/H2O2 processes for water treatment. Extracellular organic matter (EOM) and intracellular organic matter (IOM) were extracted from cyanobacteria acquired from lake water. Synthetic water was manufactured by using either EOM or IOM, and the resulting hydroxyl radical scavenging factors were measured and compared. The organic properties of the EOM and IOM were analyzed by using liquid chromatography organic carbon detection (LC-OCD) and fluorescence excitation-emission matrices (F-FEM). Analyses revealed that EOM samples exhibited strong peaks associated with tryptophan-like, fulvic-like, and humic-like (excitation/emission 250-260/380-480) substances. By comparison, the tryptophan-like peak was dominant in IOM samples. Six components were observed in LC-OCD chromatograms, with neutrals being the highest component of both of EOM and IOM, yet EOM also had high humics and LMW acids. This study proposes a predictive model that estimates the optimal UV and H2O2 doses necessary to maximize the removal of target compounds. Removal of 90% of the target compound (D90) required 6.8 mg/L of hydrogen peroxide at 1200 mJ/㎠. When comparing theoretical prediction with experimental values, the difference in the elimination rate was less than 10%.

KCI등재

3STS316 전극을 이용한 염색폐수의 COD 제거 특성

저자 : 장성호 ( Seong-ho Jang ) , 김고은 ( Go-eun Kim ) , 강정희 ( Jeong-hee Kang ) , 송영채 ( Young-chae Song ) , 이원기 ( Won-ki Lee ) , 정병길 ( Byung-gil Jung ) , 이재용 ( Jae-yong Lee )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 25-31 (7 pages)

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Wastewater contaminated with dyes accounts for 8% of industrial wastewater emissions in South Korea and moreover contains substances that are only mildly decomposable, necessitating advanced treatment processes. Dyeing wastewater is typically treated by using chemical coagulation, advanced oxidation, or .biological methods, yet this waste includes organic matter (biochemical oxygen demand(BOD), chemical oxygen demand(COD), suspended solids (SS), and color that can not only be reduced by the activated sludge method. Advanced oxidation technologies for treating dye-contaminated wastewater are being developed worldwide. For example, electrochemical techniques have been adapted to treat industrial wastewater, including dyeing wastewater, and exhibit high removal efficiencies and short treatment times irrespective of the biodegradability of the contaminant. This study further investigates the electrochemical treatment of dyeing wastewater, specifically the effects of current density and electrolyte conditions on COD removal efficiency when using stainless steel electrodes. Without electrolyte, current densities of 20 A/m2, 40 A/m2 and 60 A/m2 corresponded to COD removal efficiencies of 49.3%, 71.2%, and 85.8%, respectively, after 60 minutes of operation. By comparison, the addition of NaCl as an electrolyte enhanced the removal efficiency by 11.1% on average across all current densities, compared to when NaCl was not added. Similar effects were observed when using Na2SO4 as an electrolyte, which produced 6.5% higher removal efficiencies on average at all current densities versus the case in which Na2SO4 was not added.

KCI등재

4인 고도처리를 위한 일체형 침전부상공정(SeDAF)의 최적 응집제 주입조건 결정

저자 : 장여주 ( Yeoju Jang ) , 정진홍 ( Jinhong Jung ) , 장향연 ( Hyangyoun Chang ) , 박나리 ( Nari Park ) , 임현만 ( Hyunman Lim ) , 김원재 ( Weonjae Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 33-42 (10 pages)

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Algal blooms are caused by eutrophication, increased water temperature, and reduced water flow rate, and produce taste·odor compounds and health problems associated with cyanobacterial toxins. To prevent eutrophication and algal blooms, the Ministry of Environment (MOE) in Korea reinforced effluent standards for wastewater treatment facilities and, as a result, spurred the implementation of various advanced wastewater treatment processes to achieve compliance. Current tertiary wastewater treatment techniques are conventionally single processes, such as sedimentation or flotation, and have high operational costs and produce undesirable sludge problems due to excessive coagulant injection. Here, we develop a sedimentation and dissolved air flotation (SeDAF) process that integrates sedimentation and flotation for applications in advanced wastewater treatment. Jar-tests were used to evaluate water quality and treatment efficiency for sedimentation and sedimentation·flotation processes, respectively. Equations that estimate the optimal coagulant dosage are proposed to enhance the field applicability of the SeDAF process. Two types of jar-tests, both sedimentation and sedimentation·flotation, and multiple regression analyses are comprehensively examined to identify appropriate operation conditions for the SeDAF process considering fluctuations in field conditions such as T-P concentration, PO4-P / T-P ratio, turbidity, and flow rate etc.

KCI등재

5G시 하수처리장의 미세플라스틱 함유량 특성과 배출량 추정

저자 : 강희준 ( Heejun Kang ) , 박새롬 ( Saerom Park ) , 이복진 ( Bokjin Lee ) , 윤상린 ( Sanglyn Yoon ) , 오혜철 ( Hyecheol Oh ) , 안재환 ( Jaehwan Ahn ) , 김석구 ( Seog-ku Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 43-49 (7 pages)

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Microplastics (MP) are small plastic particles in the environment. MP are plastics smaller than 5 mm and main sources are from cosmetic products, laundry, industrial processes and sewage treatment plant. MP that generated from use of people mainly enter sewage treatment plants. Although MP were removed from the final effluent more than 90%, large amount of MP are flow into the sewage treatment plant, lots of untreated MP is being discharged into the water environment. MP entering the water environment adversely affect the ecosystem due to adsorbed persistent organic pollutants (POPs) substances in MP and chemical susbstance added during plastic production. In order to confirm sewage treatment recudtion rate in G city, each sewage treatment process and sludge were analyzed quantitatively and qualitatively and estimate the amount of microplastics flow out into the environment. As a result of the analysis, 595.4 MP/L in sewage influent and 13.1 MP/L in the final effluent and the reduction efficiency was 97.8%. Microplastics contained in the final sludge were 70,571 MP/kg. Untreated microplastics from sewage treatment plant flowing into the river is 2,371 million per day, and it is possible to 811,566,500 microplastics were recycled to fertilizer, it can be leaked into the soil.

KCI등재

6MBR공정의 질소.인저감 효과 개선을 위한 영향인자분석

저자 : 정훈섭 ( Hoon-sup Jung ) , 현길수 ( Kil-soo Hyun )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 51-60 (10 pages)

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This study aims to investigate the effects of carbon/nitrogen/phosphorus (C/N/P) ratio and recirculation on nutrient removal in a membrane bioreactor (MBR) and anaerobic/aerobic(AN/O) processes coupled with MBR by using real facilities. Treatment capacities of a MBR and an AN/O-MBR are 5,000 m3/d and 15,000 m3/d, respectively. Influent characteristics of real wastewater used for this study are BOD <200 mg/L, COD <220 mg/L, T-N <65 mg/L, T-P <8 mg/L, and E-coli.< 100,000 No/mL. In reducing organics and nutrients, AN/O-MBR performance achieved higher efficiencies (5-40% higher) than those of MBR. In particular, the removal efficiencies of N and P by AN/O-MBR were about 0.2-0.4 times higher than those by MBR while both MBR and AN/O-MBR achieved high efficiencies ( >95%) in reducing chemical oxygen demand (COD). For AN/O-MBR in reducing total nitrogen (T-N), internal recirculation (IR) of 1.5-2.0Q achieved higher efficiencies (10-30% higher) than those of IR. In particular, the addition of methanol as carbon source into MBR process achieved higher efficiencies (20-25% higher) than that without methanol. For total phosphorus (T-P) removal, the addition of polyaluminum chloride (PAC) as coagulant into the MBR process achieved higher efficiencies (30-80%) than that without PAC. For transmembrane pressure (TMP) build-up, the results reveal that the additions of methanol and PAC have effects in mitigating TMP build-up compared to MBR process without them.

KCI등재

7가중응집제 재이용을 위한 단일 및 다단 하이드로사이클론의 회수효율 평가

저자 : 서희승 ( Heeseung Seo ) , 김연권 ( Younkwon Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 4호 발행 연도 : 2020 페이지 : pp. 61-68 (8 pages)

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Settleability improvement additives (SIAs) have been suggested as an alternative to the chemical dose technology as a technique to increase microbial settleability. In this study, the following experiments were conducted to evaluate the recovery efficiency of SIAs using hydrocyclone. The experiment consisted of two steps. The first step is the flow rate change, and the second is the recovery rate experiment of SIAs using SIAs multistage hydrocyclone. Each experiment was performed based on the optimum recovery rate conditions, and the results were as follows. Results of hydrocyclon inflow experiment, solid-liquid seperation is performed at 8 to 16.7 L/min and activated carbon was the highest recovery rate at 16.7 L/min at 98.74 in lower of the device. The result of the recovery rate evaluation according to the change in the lower flow rate, it was about 70% at 1.08 to 1.2 L/min. SIAs was divided into M1(125 ~ 250 μm) and M2(250 ~ 425 μm) according to the particle size and sedimentation of the sludge was more effective when M1 is low MLSS and M2 was high. In addition, M1 had a lower recovery rate of about 40 to 50 percent compared to M2, which is considered difficult for solid-liquid seperation due to its particle size. The recovery rate of activated carbon was found to be different for each sewage treatment plant, which is considerd to be due to different shape and properties of the sludge floc in each plant. The sewage treatment plant adopted the general activated sludge process showed a recovery rate of 99% or more through multiple stage at MLSS 4300 mg/L. However, other sewage treatment plants in the same MLSS showed recovery rates of 85 to 90%, which is considered to be affected by microbial species and EPS.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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(2006)홍길동41회 피인용

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충북대학교 국회도서관 부경대학교 한국외국어대학교 강원대학교
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 16
  • 1 충북대학교 (30건)
  • 2 국회도서관 (21건)
  • 3 부경대학교 (17건)
  • 4 한국외국어대학교 (17건)
  • 5 강원대학교 (16건)
  • 6 서울과학기술대학교 (16건)
  • 7 환경부 (11건)
  • 8 세종대학교 (11건)
  • 9 한국과학기술연구원 (10건)
  • 10 서울시립대학교 (9건)

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