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수록정보
수록범위 : 1권1호(2000)~20권6호(2019) |수록논문 수 : 1,031
한국환경기술학회지
20권6호(2019년 12월) 수록논문
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KCI등재

1경상북도 환경산업 육성을 위한 분야별 조사연구

저자 : 이동섭 ( Dong Sub Lee ) , 박진식 ( Jin Sik Park ) , 최두선 ( Doo Sun Choi )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 385-392 (8 pages)

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The importance of the environmental industry was recognized as a major issue for the environmental problems (the climate change, the exhaustion of fossil fuels )of the 21st century. Many country and korea as well are exerting an effort to make plans to develop the environmental industry, expand the domestic market, and make it a global industry. According to this trend, the gyeongsangbuk-do has also designated the environmental industry as a strategic industry with high potential for development when recognizing new growth industries. Gyeongsangbuk-do is faced with a number of unsolved tasks and has not quite grasped current situations of the environmental industry.
This study integrated the results of the conducted studies and divided the eight detailed environmental industry into three groups(priority group, strategic group, and which need to establish their basis. The priority group include the environmental industries for water management and environmental safety and health. The strategic group include those for climate change response and air quality management. The group which need to establish their basis include those for resource circulation management and restoring the environment.
Based on the policy tasks, the detailed plans for the environmental industry I the gyeongsangbuk-do include : establishing a new organization which will be in charge of various works or strengthening the current organization to expend the supporting developing organization for developing the environmental industry and fulfill the efficiency guidelines.

KCI등재

2하수슬러지의 열가수분해액의 고효율 혐기성소화 평가

저자 : 박세용 ( Seyong Park ) , 이은실 ( Eunsil Lee ) , 한성국 ( Sungkuk Han ) , 김호 ( Ho Kim )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 393-399 (7 pages)

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In this study investigated an effective method for anaerobic treatment of thermal-hydrolyzed liquid containing high concentration of NH4+. First, treatment efficiency of anaerobic treatment was estimated on thermally hydrolyzed liquid applying ammonia stripping process. Ammonia stripping was estimated at temperatures 35 ℃ in the anaerobic batch feeding reactor (ABFR). The reactor showed 10~35 % biogas of theoretical biogas production. That such a low gas production caused by the Na+ from NaOH added for pH controlling during ammonia stripping (inhibiting concentration Na+ 1,000 mg/L). In another experiment the efficiency of anaerobic digestion according to the reactor types was evaluated. Four types of reactor were used; ABFR, CSTR, UASB, FBR. The results of organic removal efficiency(%) and CH4 production (L CH4/g CODremoved) by FBR was the highest, while those of ABFR was the lowest. FBR reactor presented most appropriate for anaerobic digestion because of longer SRT by sand media.

KCI등재

3합성 폐수에서 전처리 패각의 인 제거 효율 및 산 재생

저자 : 김우항 ( Woo-hang Kim ) , Annaliza P. Cainglet

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 400-408 (9 pages)

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This study assessed the effects of differing pre-treated oyster shell powder (OSP) concentration (OSP g/L) along with varying pH in the formation of calcium phosphate [Ca3(PO4)2] for the removal of phosphate in the water. The effect of acid on the regeneration of pre-treated OSP was evaluated as well. Each method includes a mixture of the PO43- solution and the pre-treated OSP which were; (1) raw OSP (ROSP) prepared using sun dried oysters hell, (2) heated OSP (HOSP) prepared by heating the shells to 750 ℃ and lastly, (3) NaOH-treated OSP (TOSP) by soaking the oyster shells to 2.5M NaOH solution. Batch and continuous mode tests were done for HOSP and the PO43-removal efficiency after regeneration by 1.2N HCl was investigated. HOSP showed higher removal compared to ROSP of up to 99 % as the pH of the solution increases to pH 10 which signifies that precipitation of Ca3(PO4)2in the form of hydroxyapatite (HAP) took place. Additionally, TOSP showed a high removal efficiency (97.5 % of PO43-removal) as the concentration increases regardless of the increase in pH. The gradual addition of NaOH in the filter column for the continuous test maintained PO43-removal. Regeneration was achieved using 1.2N of HCl solution regardless of the method of addition. Removal efficiency of PO43- was observed to reach 98 % of removal after regeneration.

KCI등재

4EM 담체를 충전한 침지여상의 수처리 효율 산정

저자 : 배수현 ( Su-hyun Bae ) , 유찬서 ( Chan-seo You ) , 라덕관 ( Deog-gwan Ra )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 409-417 (9 pages)

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Experiments were carried out to evaluate the water treatment efficiency about submerged biofilter with EM media parking. The results obtained are as follows.
The packing porosities for EM media and crushed stone were measured as 68.5 %, 53.5 %, respectively. And the attached biomass concentration on EM media was to be shown 1,120 mg/L. The water temperature was 26.9±2 ℃, pH was 6.3~7.5, DO was 6.3~7.8 mg/L, EC was 1.08~1.45 μs/cm, ORP was 175~221 mV and turbidity was 0.8~3.03 NTU. On the condition of 100 % media packing and 100 % internal recycle, COD removal efficiencies of EM media and crushed stone were showed as 77.7 % and 70.7 %, respectively. COD reaction coefficient(day-1) was increased with increasing internal recycle ratio, and the value was measured larger on EM media than crushed stone.

KCI등재

5회전반응로형 가축분뇨 퇴비화 공정을 통한 암모니아 발생가스 저감 특성 연구

저자 : 장지훈 ( Ji-hun Jang ) , 옥용호 ( Yong-ho Ok ) , 양고수 ( Go-su Yang )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 418-424 (7 pages)

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A Rotary Kiln furnace with a 1-ton scale production capacity, which is about 50 batches based on 20 kg weight per 1 composting batch, was constructed to analyze odor (ammonia) generation characteristics and mitigation strategies.
The amount of compost fed into the reactor was 450 ~ 500 kg/batch. Hot air at 200~100 was injected into the reactor at a 3~5 m3/hr airflow rates early composting fermentation conditions. The temperature and moisture content in the furnace were measured to adjust the temperature and flow rate of the blowing air to maintain the conditions. The temperature of the compost in the reactor began to rise one day after injecting hot air and reached a maximum temperature of 80 ℃ after 48 hours. It gradually dropped after about four days and reached 63 ℃. Then, the temperature was maintained at about 58 ℃ after eight days. The moisture content was maintained at 42.6 ~ 51.2 % during the fermentation period and the ammonia concentration rapidly increased to 700~100 ppm after hot air was injected. It decreased after reaching the highest temperature and an air temperature of 63 ℃, at which time the ammonia concentration was 200~50 ppm, which was 1/10 of the highest value. Ninety-eight percent or more of the odor (ammonia gas) was efficiently removed by using citric acid and 0.3 M potassium permanganate as the absorbing solution, which was higher than when an aqueous solution was used as the absorbing solution. The odor removal (ammonia gas) efficiency using 0.3 M citric acid absorbent was relatively high (> 98 %) and particulate ammonium citrate was formed as a byproduct, indicating the potential for recycling as fertilizer.

KCI등재

6파일럿 규모의 석탄계 입상활성탄 공정을 이용한 하수처리수 내 유기물질의 제거특성

저자 : 김효원 ( Hyo-won Kim ) , 권민지 ( Min-ji Keon ) , 최영익 ( Young-ik Choi ) , 최성문 ( Sung-moon Choi ) , 이대선 ( Dae-seon Lee ) , 김인규 ( In-kyu Kim ) , 김형호 ( Hyong-ho Kim ) , 송미경 ( Mi-kyung Song ) , 정병길 ( Byung-gil Jung )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 425-431 (7 pages)

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The purposes of this research were to evaluate the iodine adsorption capacities for four types of granular activated carbon(GAC) and to investigate the removal characteristics of organic matters(TOC, DOC, CODMn), SS and nutrients(T-N, T-P) in secondary effluent of sewage treatment plant located in industrial area by using the pilot-scale coal-based granular activated carbon(C-GAC). The average removal efficiencies of TOC, DOC, CODMn, SS, T-N and T-P were 63.1 %(27.6~84.4 %), 61.0(30.1~82.7) %, 60.0 %(29.1~81.6 %), 74.5 %(10.0~94.1 %), 8.2 %(0.3~23.3 %) and 11.4 %(0.0~20.2 %), respectively. During the pilot plant operation periods, the maximum removal efficiency of TOC was 84.4 %, and the adsorption efficiency gradually decreased to the lowest level of 27.6 %. This research estimates that the proper replacement cycle of the activated carbon considering the target water quality is about 3 months.

KCI등재

7유기성 슬러지 발효감량장치 성능개선 연구

저자 : 손영득 ( Young-deuk Son ) , 최경식 ( Kyoung-sik Choi )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 432-436 (5 pages)

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This study aims to maximize the performance of sludge fermentation tank by improving the agitation system under aerobic condition. Sewage sluge of company B in G city was used for test of pilot scale as 1 ton/day. For the analysis of sludge properties, 10 toxic substances such as arsenic and cadmium were analyzed as the results of non detection concentrations. Oil content, water content and organic content were reported as 0.33 %, 70.8 % and 92.8 %, respectively. The sludge was added at 29.0 tons / month for 6 months, resulting in an average of about 27.7 tons of sludge being lost by the fermentation. Thus, 1.31 ton of sludge was discharged from the tank, resulting in an average sludge reduction efficiency of 95.5 %. To investigate organic matters during fermentation, TOC concentrations were compared three times before and after fermentation. First sludge sample sampled within one month of operation reduced TOC by approximately 1.0 % from 41.0 % to 40.5 %.
This resulted from the abnormal conditions due to the stabilization of the tank. After 45 days and 60 days of the operation, the TOC for the 2nd and 3rd tests were reduced to 57.0 % and 49.2 %. By using the applied factors in this study, the air flow was calculated as 1,400㎥/day for 1ton/day pilot scale.

KCI등재

8하수처리시설 측정자료의 정확도 검증 및 문제점 분석

저자 : 고광용 ( Kwang-yong Ko )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 437-444 (8 pages)

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Currently, the monitoring data of sewage treatment equipment will be implemented in three types including tele-monitoring system, national pollution source survey data, emission reduction monitoring, various inspections. However, monitoring results are investigated differently depending on the monitoring method, point, investigator, analyst, etc. The degree of difference in monitoring data is analyzed by statistical method. Statistical analysis was performed to bias, mean absolute error, reduction of variance, accuracy, critical success index. As a result, the comparison with the water quality TMS(Tele-monitoring system) data showed the greatest difference, with the remaining monitoring data being almost identical. In addition, the monitoring data confirmed that there were various problems. Therefore, it is necessary to establish a continuous and long-term monitoring plan, establish criteria for measurement points, measurement methods, measurement times, measurement cycle, etc., and perform monitoring to meet the criteria.

KCI등재

9폐기물처리시설 주변영향지역의 대기환경평가

저자 : 김도용 ( Do-yong Kim )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 445-450 (6 pages)

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In this study, the assessment of atmospheric environment was performed for the neighboring areas of waste disposal facility in Mokpo city. The air pollutants(SO2, CO, NO2, PM-10, O3, Pb, Benzene) and the odor causing substances(NH3, H2S) were measured and analyzed. The concentrations of SO2 and CO represented below 10 % and 5 % of atmospheric environmental standards, respectively. NO2 concentration was evaluated about 15 % of the environmental standard. PM-10 was evaluated below 50 % of the environmental standard. O3 concentration represented about 55~82 % of the environmental standard. Pb and Benzene were not detected for all target points. The results indicate that the neighboring areas of waste disposal facility in Mokpo city are generally in the good atmospheric environmental condition. It was also suggested that the management improvement of odor should be necessary for the reduction of environmental civil appeals, although NH3 concentration was evaluated below 13 % of the permissible emission standard for odor.

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10입자성 고형물을 제거하기 위한 침전조 일체형 무 환수 수조 시스템에서 수질 특성

저자 : 김광석 ( Kwang Seog Kim ) , 김우항 ( Woo-hang Kim ) , 정정조 ( Cheong-jo Cheong ) , 이영식 ( Young Sik Lee )

발행기관 : 한국환경기술학회 간행물 : 한국환경기술학회지 20권 6호 발행 연도 : 2019 페이지 : pp. 451-456 (6 pages)

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In order to remove particulate from tank of fish farms, an all-in-one breeding and sedimentation tank was designed and its effects were investigated. Space of the water tank were partitioned into an eel breeding part on the left and a sedimentation tank on the right, and water on breeding part was moved from the breeding part to a sedimentation tank by airlift pump located on the right side of breeding part. In the sedimentation tank, the particulate in water was naturally precipitated and the water that the particulate was removed moved into an eel breeding part through hole of partition which is located top layer and then removed from bottom of sedimentation tank naturally. Concentration of particulate was decreased from 10.0 mL/L to 5 mL/L (removal efficiency: 50 %) in 1.5 hours and to 0.1 mL/L (removal efficiency: 99 %) in 6 hours. An all-in-one tank in this study is expected to be able to replace the drum screen function used in the existing eel fish farms. In existing eel fish farms, water in several fish tanks are sent to one drum screen to remove particulate, so disease in one tank can easily spread to other tank. On the other hand in this study, disease can not easily spread from tank to tank because of no water flow. Therefore, it is expected to have easier control of the disease than the drum screen method.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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(2006)홍길동심리학41회 피인용

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2미국의 비트코인 규제

(2006)홍길동41회 피인용

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