• Journal of Wetlands Research
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• v.23 no.1
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• pp.7-13
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• 2021

Due to rapid industrial development, population growth, and improvement of living standards, the amount of sewage and wastewater, including nutrients, is increasing every year. In addition to the increasing amount of sewage and wastewater generation, untreated linked treated water (manure, livestock manure, industrial wastewater, leachate, food waste) is also increasing, and many of the linked treated water flows directly into nearby sewage treatment plants. The associated treated water causes many problems because of its own characteristics, low flow rate with high concentration compared to existing inflow sewage. In order to solve this problem, it is necessary to investigate the quantity and quality of the connected treated water whichh is flowed into the sewage treatment plant, and a study the effect on sewage treatment. Therefore, in this paper, we would like to examine the effect of the linked treated water. Seasonal effect associated with water pollution conditions was considered. In addition, a scenario was created through the distribution and inflow of connected treated water along with the water temperature conditions. Through scenario analysis, we intend to optimize the operating conditions of linked processing.

• Journal of the Korea Organic Resources Recycling Association
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• v.20 no.3
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• pp.52-59
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• 2012

As the result of reviewing the linked treatment of water quality for treating process at public livestock wastewater treatment facilities for fair selection of the proper linked process in case of linking sewage treatment plant for livestock wastewater, in case of wastewater processed by bio-reactor that is only biologically-treated, the load factor showed relatively high as 1.67%(base on design quality), 2.59%(base on operation quality) regarding COD and 3.69%(base on design quality), 7.67%(base on operation quality) regarding $COD_{Mn}$ but it is judged that there is nearly no influence on the operation of sewage treatment plan. And, in case of oxidized flotation-treated water & biofiltlation-treated water that are the advanced wastewater treatment, the load factor is approximately 1% and there is concern about the installation of excessive facilities in case of installing the advanced wastewater treatment. So, in case of considering the economic efficiency & stable operation of sewage treatment plant S, it is judged to be desirable to link with wastewater processed by bio-reactor that is biologically-treated.

• Journal of Wetlands Research
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• v.22 no.4
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• pp.321-327
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• 2020

Recently The amount of wastewater and linked wastewater is being increased every year due to industrial development, population growth, and improvement in living standards. Linked wastewater shows the feature-low flow rate and high concentration. Therefore, it has been shown that it has a great impact on the operation of the sewage treatment plant and costs a lot for treating linked wastewater. In this study, a scenario with low increase of water quality when the total amount of the inflow of linked wastewater was entered into individual reactors is obtained. According to the result of modeling, The effluent water quality get the least increment once the water was introduced into the influent and anoxic tank. We generated the various scenarios Based on these results. scenarios are varying according to inflow from linked waste water's distribution ration. As a result of modeling through various scenarios, it was found that the increment of TN and TP were at the least when the inflow of linked water was distributed with ratio between sewage (80%) and oxygen-free tank (20%).

• Journal of Wetlands Research
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• v.22 no.2
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• pp.139-144
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• 2020

Recently, high-concentration linked wastewater has been introduced into a nearby municipal wastewater treatment plants(MWTPs), but it is difficult to MWTP in local governments due to an unreasonable linked treatment charge system, and there is insufficient evidence or data to prove this. However, the MWTP, which is a national essential infrastructure, is generally exempt from the preliminary feasibility study, so there have been no cases where economic evaluation was conducted. Therefore, we proposed an improvement plan that can compensate for the disadvantages of the existing linked processing charges through previous studies. In this study, a comparative evaluation of how much economic feasibility can be improved compared to the existing ones when applying the improvement plan by conducting an economic analysis. For this, reference was made to the preliminary feasibility assessment data of the existing environmental facilities and the cost factors and benefit factors established during the modernization of the old sewage treatment facilities. As a result of the study, the B/C(Benefit/cost) value was quite low in the past, but when the improvement proposal proposed by the researchers was applied, it was confirmed that the B/C value increased close to 1. Therefore, it is considered to be very reasonable to calculate the linkage processing charge according to the linked wastewater load proposed by the researchers.

• Journal of Wetlands Research
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• v.21 no.3
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• pp.244-250
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• 2019

Due to the industrial development and population growth, it has recently been shown that there are many problems caused by the rinked treatment water in local goverments and sewage treatment plants. The rinked treatment water has a characteristic of low flow rate and high concentration unlike general sewage. These characteristics increase sewage treatment difficulty and sewage treatment fee of sewage treatment facilities. Among the many influencing factors that increase sewage treatment unit cost, 'linked treatment load/design inflow load (%)' was derived as the most correlated factor. Through the selection and modeling of sewage treatment plants, the excess scope of design discharge water quality was investigated under the conditions of temperature and the conditions of 'linked treatment load/design inflow load (%)' taking into account the effects of the four seasons. The study found that for TN, 'linked treatment load/design inflow load (%)' was 19.7%, 22.6%, 25.1%and 27.7%, respectively, under conditions of $5^{\circ}C$, $10^{\circ}C$, $20^{\circ}C$ and $25^{\circ}C$. In case of TP, 'rinked treatment load/design inflow load (%)' was 10.7%, 12.2%, 15.6% and 17.5% at $5^{\circ}C$, $10^{\circ}C$, $20^{\circ}C$, and $25^{\circ}C$, respectively, under conditions of $5^{\circ}C$, $10^{\circ}C$, $20^{\circ}C$ and $25^{\circ}C$.

• Journal of the Korea Organic Resources Recycling Association
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• v.27 no.1
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• pp.57-64
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• 2019

We investigated influence of connected influent on the treatability of a wastewater treatment plant (WWTP), recently accepting effluent from a sludge carbonization facility. Based upon the pollutant loading rates (kg/d) of each connected influent, food waste leachate and livestock wastewater contributed to high BOD and COD loadings, while sludge carbonization facility effluent certainly contributed to T-N and $NH_3-N$ loadings. The nitrification rate in aerobic tank decreased to 55% with the carbonization facility effluent entering to the WWTP, while it was 89% with no carbonization facility effluent entering. The sludge carbonization facility effluent may need to be pretreated to reduce T-N and $NH_3-N$ loadings before entering to the WWTP for further treatment.

• Journal of Wetlands Research
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• v.22 no.2
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• pp.92-99
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• 2020

Linked treatment refers to a system that relieves the burden of the business by linking high concentrations of wastewater such as human waste, manure, leachate, and other industrial wastewater to nearby municipal wastewater treatment plants(MWTPs). In 2018, 187 MWTPs, which are about 4.5% of the total domestic MWTPs, have implemented a linked treatment system, but local governments are having difficulties in operating sewage treatment due to lack of reasonable cost estimation standards. Therefore, we proposed an improvement plan to solve the problem in the calculation method that currently imposes linked wastewater. To this end, the effects and correlations of the linkage treatment system on the sewage treatment unit were analyzed, and among them, the main factors with the highest correlation were applied to the improvement plan. As a result, an improvement plan that improved three parts of the existing calculation method was presented, and the calculation method and the calculation case using the existing literature values were also presented. This can be used as a basis for future reference by local governments to implement linkage treatment, and to revise local sewerage ordinance and is believed to be helpful in operating a rational linkage system.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2004.05a
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• pp.320-323
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• 2004

두가지 처리방법을 연계처리하여 실험한 결과 펜톤산화를 전처리로 적용하여 실험한 경우가 COD와 Color의 제거면에서 더 높은 처리효율을 보이고 있으며 본 연구의 실험 목적인 RFP상의 수질기준을 만족하였다. 배출수 수질 기준이 강화된 RFP상의 수질기준을 만족하기 위한 고도산화방법의 연계처리방법 중 오존산화와 펜톤산화를 조합한 결과 유기물과 색도를 고루 제거하는 펜톤산화를 전처리 공정으로 적용하고 유기물의 제거보다는 색도제거에 더 효율적인 오존처리 공정을 후처리로 둔 조합공정이 더 적합한 것으로 판단된다.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2003.06a
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• pp.70-73
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• 2003

기존의 영상검지기는 한정된 구간에서 차량을 추출, 추적하는데 본 논문에서 제안한 카메라간 연계 추적 방법은 두 대의 카메라를 서로 연계하여 차량을 추적함으로써 넓은 구간에서도 효과적으로 차량을 추적할 수 있다. 한 대의 카메라는 전방을 검지하고 다른 카메라는 후방을 검지하여 전방 검지영역에서 추적한 차량을 후방 검지영역에서도 연계하여 추적하게 된다. 연계 추적을 위해 전방 카메라에서 취득한 차량의 차선정보와 차량의 대표 gray level 정보를 후방 카메라로부터의 영상 분석시 이용하여 차량 연계 추적을 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.109-112
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• 2004

지식정보화 사회에서는 정부기관 간 정보연계가 정보의 원활한 운영을 위해서는 필수적인 요소가 되었다. 하지만, 효율적이고 체계적인 정보연계를 위해서는 서비스 제공 측면뿐만이 아니라 DB관리, 연계대상, 확장성 등을 종합적으로 고려한 정보 레파지터리가 필요하고, 이를 위해서는 보다 효과적인 정보연계 모델이 필요하다. 특히 산재되어 있는 장애인 정보는 기관간의 독립적인 정보시스템에 의해 정보연계가 물리적인 기법과 서비스적 측면에 한정되어 있다. 이에 따라 본 논문에서는 연계의 용이성 및 효율성을 고려한 EAI 기반의 장애인정보 레파지터리 정보연계 모델을 제시한다. EAI 구조는 데이터 라우팅 등으로 이기종간의 정보연계를 용이하게 해주며, 장애인정보 레파지터리는 기존 서비스측면의 정보연계의 한계점을 극복할 수 있는 형태이다. 이로써 본 논문에서 제시한 연계모델을 이용하여 저비용고효율의 정보연계가 가능하게 되어 정부/공공기관 간 정보교류가 활발히 이루어질 수 있을 것이다.