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한국수처리학회지 update

Journal of Korea Society of Water Science and Technology

  • : 한국수처리학회(구 한국수처리기술연구회)
  • : 공학분야  >  환경공학
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수록정보
수록범위 : 1권1호(1993)~28권6호(2020) |수록논문 수 : 1,355
한국수처리학회지
28권6호(2020년 12월) 수록논문
최근 권호 논문
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KCI등재

1과불화옥탄술폰산 제거를 위한 과황산염 기반의 산화 기술 성능 평가

저자 : 박새롬 ( Saerom Park )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 3-11 (9 pages)

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Perfluorooctanesulfonic acid (PFOS), one of poly- and perfluoroalkyl acids has been receiving increasing attention from environmental scientists and public health communities due to its wide distribution, persistence, bioaccumulation, and potentially negative health impact. Research presented here focused on evaluating the effectiveness of four potential in-situ amenable technologies, based on persulfate (PS) oxidation approaches with the addition of another probing oxidant or catalysts for PFOS removal. These were the use of hydrogen peroxide with PS, Fenton reaction with PS, nano zero valent iron-activated PS, and alkali-activated PS. In this study, neither the use of hydrogen peroxide or PS oxidants were not able to decompose PFOS, but showed PFOS removal through volatilization. Similarly, Fenton reaction with PS also showed PFOS volatilization due to exothermic reaction. Nano zero valent iron-activated PS also showed PFOS removal, due to its adsorption onto the surface of zero valent iron, but not due to decomposition. Lastly, alkali-activated PS did not induce PFOS attack by the diverse radicals generated such as sulfate, hydroxyl and oxygen radicals. The four types of PS-based oxidation technologies assessed here failed to decompose PFOS by oxidation. However, they showed PFOS removal due to volatilization or adsorption.

KCI등재

2Deep bed로 구성된 활성탄/모래 공정에서의 입자성 물질 저감연구

저자 : 백영애 ( Baek Youngae ) , 조우현 ( Joe Woohyun ) , 이광제 ( Lee Kwangjae ) , 홍숭희 ( Hong Seounghee ) , 박현 ( Park Hyeon )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 13-20 (8 pages)

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A water purification plant does not have a filter-to-waste valve, and the lack of free space makes the installation of such a valve difficult. In this study, we tried to reduce particulate matter by laying sand under the activated carbon without installing additional facilities. As a result of laying the lower sand to reduce the leakage of granular activated carbon, it was possible to reduce the particulate matter by about 15-20 % compared to the granular activated carbon process alone. The operating head rose about 10-20 cm when sand was laid, but there was no sharp rise and it was considered to be acceptable on site. In addition, the bacterial activity in the granular activated carbon column immediately after backwashing was detected at a maximum of about 120 per 100 mL. Despite the low water temperature (below 15℃), bacteria that are uncommon in the sand-filtered water proliferate and act as biological activated carbon in the granular activated carbon process, but it was found that it decreased by about 20% when sand was laid under the activated carbon. Regarding backwashing, it was confirmed that the activated carbon and sand layers were well mixed during air washing and then well separated again during rinsing due to the difference in specific gravity between the activated carbon and sand. A result of this study is that, in order to reduce leakage particles from granular activated carbon, it is recommended to use sand with a commercially available sand size of 0.55-0.6 mm (uniformity coefficient of 1.4 or less) when laying sand under granular activated carbon with an effective size of 0.65 mm.

KCI등재

3수온 및 염분이 혐기성 암모늄 탈질균 배양에 미치는 영향

저자 : 이창주 ( Chang-ju Lee ) , 김영희 ( Younghee Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 21-30 (10 pages)

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The ANAMMOX process using anaerobic ammonium denitrifying bacteria has recently attracted much attention as a technology to remove nitrogen from sewage and wastewater, because of its effectiveness, lower energy consumption and absence of need for carbon sources. However, due to not only the slow growth rate of microorganisms but also various environmental factors that inhibit their growth, the development of such technologies in Korea is slow. In this study, the effect of temperature, COD, and salinity on the growth of microorganisms was investigated in cultivation of anaerobic ammonium denitrifying bacteria (ANAMMOX), using livestock wastewater sludge. After the separation of ANAMMOX bacteria from livestock wastewater sludge for 80 days, it was found that COD concentration higher than 100 mg/L in the medium negatively affects the growth of microorganisms. In experiments with isolated ANAMMOX bacteria, higher temperature resulted in faster growth of microorganisms. The Nitrogen Removal Rate (NRR) was greater than 1.0 kg/m3/d after 15 days, and the maximum NRR value observed during the experiment was 1.38 kg/m3/d. The effect of salinity was tested at the maximum salt concentration of 3000 mg/L. As the salt concentration increased, the NRR recovery period tended to be prolonged, but the NRR continued to increase, thus securing positive data on salt resistance. Further evaluation of salt resistance at higher salt concentrations should be considered to apply ANAMMOX for wastewater of high concentration salt like foodwaste leachate.

KCI등재

4Methylotrophs 군집과 활성슬러지에 의한 수중의 Anthracene과 Phenanthrene 제거특성 비교

저자 : 김이태 ( I-taekim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 31-38 (8 pages)

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This study compared the effect of a microbial consortium of Methylophilus and methanotrophs with that of the microbial consortium in sewage sludge on the biodegradation of polycyclic aromatic hydrocarbons (PAH) in wastewater. Anthracene and phenanthrene were used as representative types of PAHs. Two microbial consortia were investigated, Methylophilus coexisting with the methanol generated by methanotrophs, and the methane-oxidizing methanotrophs among the methylotrophs isolated and cultured from sewage sludge. Analysis of the cultured community showed that Methylobacter, a type of methanotroph, accounted for 42.3% of the total Methylophilus microbial consortium, whereas Pseudomonas accounted for the vast microbial majority in the activated sludge. Removal of anthracene and phenanthrene by the microbial consortium of Methylobacter and Methylophilus genera was 30% faster than that by activated sludge, and both hydrocarbons were degraded within 14 days. A relatively rapid biodegradation was observed from early stages, especially in the case of phenanthrene compared with that of anthracene. It was confirmed that the methylotroph community of the genera Methylobacter and Methylophilus was more effective for the removal of the two PAHs than activated sludge

KCI등재

5고농도 유기성 산업폐수 처리를 위한 복극층 전극반응기의 적정처리조건 탐색

저자 : 윤조희 ( Cho-hee Yoon )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 39-46 (8 pages)

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Electrochemical anodic oxidation was carried out to investigate the efficiency of a lab-scale bipolar packed-bed particles electrode reactor (BPER), using high-strength organic industrial wastewater with a mean COD concentration of 2500 mg/L. Operating variables considered to determine optimal running conditions for the wastewater treatment examined were the packing electrode materials, such as PbO2, MnO2, granular activated carbon and graphite, the current density, the flow rate to the reactor, the temperature and the additives. Results revealed that PbO2 as anodic electrode was more suitable among other materials examined and that the optimal input current density for this process was 2.22 A/d㎡. The total theoretical voltage obtained from the voltage-current curve was 55 V in the reactor and 5.5 V per unit layer bipolar cell. The effect of aqueous solution with added NaCl (17 mM NaCl, pH = 9.00) was more prominent than in absence of NaCl for COD removal in organic industrial wastewater. The COD removal rate increased with increasing temperature over 40℃. The value for activation energy was determined at 4.3 kJ/mol. In the continuous reactor set-up examined, the bipolar electrode was more efficient for COD removal than multi-monopolar electrode.

KCI등재

6수질이 상수관로 부식에 미치는 영향 연구

저자 : 권대영 ( Dae-young Kwon ) , 김동훈 ( Dong-hun Kim ) , 김준호 ( Jun-ho Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 47-55 (9 pages)

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In the present study, water pipe corrosion was examined according to the pipe type and under various water quality conditions, including changes of pH and alkalinity, and high concentration of iron(Fe) and manganese(Mn). Specimens of three different representative water pipe types, steel pipes, galvanized steel pipes, and stainless steel pipes, were used to investigate the corrosion characteristics, while the water quality was varied from strongly acidic (pH 1) to strongly alkaline (pH 12). Samples were collected every day and their pH, Fe, and Mn concentration, hardness, and alkalinity were analyzed through a loop test. The corrosivity was estimated from the Langelier saturation index, which can be calculated by water quality analysis results. The corrosion rate was calculated through the weight loss of the sample. The corrosion index increased for the first three days regardless of the water quality, except for the pH 1.25 condition. The corrosion rate decreased significantly, because of the film either created by the reaction of the corrosion oxides or generated on the surface of the specimen. High concentration of Fe and Mn in the water led to actively occurring corrosion.

KCI등재

7CNT 전기분해를 이용한 돈사폐수 3차 처리특성 평가

저자 : 조용현 ( Yong-hyun Cho )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 57-61 (5 pages)

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Livestock wastewater has a high concentration of organic matter and particularly a very high concentration of substances that lead to eutrophication, making it a serious point source of pollution polluting water resources such as rivers and lakes. In this study, a study was conducted on the evaluation of the third treatment characteristics of livestock wastewater through a water treatment electrolysis device using a carbon nano tube(CNT) electrode. The electrolysis method not only removes organic matter(biochemical oxygen demand, chemical oxygen demand, etc.), but also has high removal efficiency of ammonia nitrogen, is a very economical method because the device is inexpensive and the contact time is short. As a result of the study, the higher the pollution degree of wastewater was, the higher the current intensity according to the applied voltage. According to the amount of dissolved pollutants, it was found that the amount of current increased close to the second-order polynomial with increasing voltage. In addition, through lab-scale experiments, it was shown that the higher the applied voltage, the higher the efficiency of organic matter and nitrogen-based treatment. When the applied voltage was 8V and 40 minutes elapsed, the chemical oxygen demand(COD) removal rate was 62% and the total nitrogen(T-N) removal rate was 31%, showing an effect of improving water quality through electrolysis.

KCI등재

8생물입상활성탄과 분리막 시스템에 의한 호소수중의 미량오염물질 제거

저자 : 김지연 ( Ji-yeon Kim ) , 여인홍 ( In-hong Yeo ) , 현길수 ( Kil-soo Hyun )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 63-70 (8 pages)

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Biological granular activated carbon (BAC) bed has been applied to remove a micropollutant in the surface water being used as water supply source. Membrane filtration (MF) has also been introduced water treatment plant to provide better quality drinking water by removing bacteria, viruses, microorganisms as well as particulate and organic matter. This study aims to investigate the effect of BAC biofiltration as a pretreatment before MF processes and evaluate the performance of BAC/MF systems for the treatment of lake water. Applied filtration rates during this experiment were <100 m/d for BAC and 0.5 ㎥/㎡.d for MF. Influent concentration were on humic acid <10 mg/L, turbidity <100 NTU, UV254 < 0.250 cm-1, dissolved organic carbon (DOC) < 9.7 mg/L, d respectively. As a result, both BAC bed and BAC/MF system achieved more than 90% efficiency in removing turbid and organic matters corresponding to UV254 and DOC. This indicates that the biofiltration of BAC bed was considerably effective for reducing foulants. The transmembrane pressure (TMP) at increased MF rates was in proportion to the increased humic acid rates in the range of 2 to 10 mg/.L These results indicate that the addition of a BAC bed prior to the membrane filtration process is necessary for cost-effective lake water treatment due to both efficient reductions of geosmin and 2-MIB as well as micropollutants and membrane fouling mitigation due to reduction of the TMP. Silt density index(SDI) were found to be one of the most effective and convenient variables of sludge to evaluate sludge properties and membrane fouling, and an empirical relationship between SDI and membrane permeability was proposed for effectively predicting membrane fouling in an MF and combined MF with conventional treatment processes at high and different turbidity and DOC concentrations.

KCI등재

9착유세척수의 전처리를 위한 응집과 전해산화공정의 적용성 연구

저자 : 왕영준 ( Youngjun Wang ) , 정종태 ( Jongtai Jung ) , 한상윤 ( Sangyun Han )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 71-76 (6 pages)

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In this study, the characteristics of milking washing water generated in dairy farms and the treatment characteristics of the single process of electrolytic oxidation using an insoluble electrode module were investigated. The results of studying the applicability of the pretreatment process for biological post-treatment through the linkage process with chemical coagulation treatment using PAC(Poly Aluminum Chloride) 17% are as follows. As a result of analyzing the water quality behavior by measuring the reaction time of the milking washing water using an electro-oxidation process, suspended solids in the form of scum accumulated on the top of the electro-oxidation reactor and could be removed. In the case of total nitrogen, ammonia nitrogen, and color, it was found that treatment efficiency was almost proportional to the electro-oxidation time. When electro-oxidation was carried out in the state of almost no suspended matter after coagulation treatment, the removal rate of ammonia nitrogen by the insoluble electrode was found to be high. When configuring the milking washing water treatment system, combining the pre-coagulation process and the electrolytic oxidation process (as a pretreatment of the biological process) allowed reduction of the load of organic pollutants by about 60% and the load of ammonia nitrogen by about 90%.

KCI등재

10이산화티타늄 광촉매를 활용한 수중의 미세플라스틱 분해 평가

저자 : 김종규 ( Jong Kyu Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 28권 6호 발행 연도 : 2020 페이지 : pp. 77-85 (9 pages)

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Untreated effluent containing microplastics at sewage treatment plants(STPs) and wastewater treatment plants(WWTSs) have been continuously reported to have adverse effects on marine ecosystems. However, there is no suitable microplastic-targeted technology applied STPs and WWTSs. In this study, photocatalysis is evaluated as a potential technology to treat microplastic in STPs and WWTPs by degrading polyamide66 (PA66) microfibres using ultraviolet (UV) and titanium dioxide (TiO2). PA66 microfibres immersed in deionised water were exposed to different combinations of UV and TiO2. The degradation of the PA66 microfibres was monitored by changes in mass, carbony lindex and morphology using micro balance, and Scanning Electron Microscopy. The formation of by-products from the degradation of the fibres was also evaluated by measuring the chemical oxygen demand (COD) of the treated water. The degradation efficiency was optimised under UVC with 100 mg/L of TiO2. Under these conditions, the PA66 microfibres had a 97% mass loss within 48 h. Moreover, photocatalysis generated are latively low level of by-products (<10 mg/L of COD). Therefore, it could potentially be a feasible technology to treat microfibres in STPs and WWTPs. Further work is needed to translate the present optimised conditions to STPs and WWTPs.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동41회 피인용

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