폐기물 성상과 매립방식에 따른 침출수 특성

성낙창,김은호,문추연,김정권,장성호,김수생,박출재 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

In this study, we can be obtained the following conclusions about the characteristics of leachate with waste compositions and landfill methods. pH shows a tendency to increase in E. landfill, because NH₃ is created by anaerobic degradation and dissolved in leachate. The concentrations of BOD and COD become different, In case of E. landfill, food of combustible is H. & S. landfill and then SS is high in concentration. According to passed time, T-N is high in concentration, but T-P shows a similar tendency. Heavy metals of leachate is lower than threshold concentrations. If leachate is treated biologically, microbes are not inibitory.

정수처리공정상 염소소독부산물형성에 미치는 오존의 영향

성낙창,박현석,이성식,이용희,이종팔,윤태경 한국환경과학회 2004 한국환경과학회지 Vol.13 No.1

The effect of ozone on the formation and the removal of disinfection byproducts(DBPs) of chlorination process was studied to elucidate the performance of water treatment process. The samples of raw water, prechlorination process, and preozonation process were analyzed quantitatively according to the Standard Methods for the Examination of drinking water. As a result, most of total trihalomethanes(THMs) which were formed in prechlorine treatment process was not removed in the preozonation process. Most of haloacetic acids(HAAs), haloacetonitriles(HANs), and chloral hydrate(CH) was removed in sedimentation and biological activated carbon(BAC) filtration processes. However, DBPs were increased more or less by postchlorine step. In particular, the formation of THMs and HAAs depends on ozone more than chlorine, but, the formation of HANs and CH depends on chlorine more than ozone. The seasonal variation of DBPs concentration for the year needs to be investigated to study the temperature effect because DBPs strongly depend on temperature among various efficient factors.

침지형 부직포여과 간헐폭기 활성슬러지법에 의한 침출수 처리에 관한 기초연구

성낙창,전기일,박동원 한국폐기물자원순환학회 2002 한국폐기물자원순환학회지 Vol.19 No.2

축산폐수 혐기성 소화시 음식물쓰레기 혼합에 따른 처리효율과 메탄가스의 회수 가능성

성낙창,박경철,최성문 한국폐기물자원순환학회 2001 한국폐기물자원순환학회지 Vol.18 No.3

고농도 질소제거를 위한 축산폐수 처리시설 적정관리 방안

성낙창,신남철,정유진 한국환경농학회 2000 한국환경농학회지 Vol.19 No.3

고농도의 질소를 함유하는 축산폐수에 대한 문헌고찰 및 실제 운전사례를 통해 다음과 같은 결론을 얻었다. 1. 전국의 축산농가에서 하루 발생하는 축산폐수발생량은 약 197천㎥로서 이중 법적규제대상 미만 축산폐수가 50%를 차지하고 인근하천으로 직방류시 부영양화의 원인이 되고 있다. 2. 축산폐수의 특성중 가축의 분과 뇨에 따라 유기물 및 질소·인의 농도차가 크기 때문에 축산폐수처리시는 반드시 분과 뇨의 분리가 이루어져야하고 또한 축산폐수공공처리시설의 계획에 있어서 처리대상 축산폐수의 정확한 오염농도의 산정이 필요하다. 3. 기존 처리장에 화학적처리공정인 응집반응조와 질소제거를 위한 혐기 호기조를 설치하여 운영한 K시의 실제 운전사례 결과 유입수의 총질소 농도가 1,500∼3,000㎎/ℓ인 것을 120㎎/ℓ 이하로 방류하므로써 92∼96%의 제거효율을 나타내었고 유입수의 총인농도가 131∼156㎎/ℓ인 것을 0.15∼1.00㎎/ℓ로 처리하므로써 99%이상의 제거효율을 나타내었다. 4. 혐기조에서 탈질 미생물의 원활한 대사활동을 위해서는 지속적인 유기탄소원 공급과 pH의 영향이 중요하데 조사기간동안 혐기조의 pH는 평균 9.0정도를 유지하였다. 5. 질소·인제거 공법들의 현장적용을 위해서는 적절한 적응성 및 처리성 실험 그리고 각 공정의 올바른 운전과 유지관리의 기술이 확립되어야 한다. 6. 정부에서는 축산폐수의 적정처리 및 관리대책 방안으로 법규 및 수질기준강화, 개별 축산농가에 대한 지원, 지도·점검 및 홍보강화와 기술지원 등 장차의 엄격한 방류수수질기준을 안정적으로 유지할 수 있는 기술보급과 이의 적정 관리방안에 대한 적극적 검토가 요구된다. The amount of swine wastewater reaches about 197,000㎥ per day at live-stock houses in the whole country. A half of the swine wastewater resources are too small to be restricted legally. This untreated wastewater causes the eutrophication in the water bodies. In case of swine wastewater treatment, the solid-liquid separation must be performed because feces(solid phase) and urine(liquid phase) have large differences in nitrogen and phosphorus concentration. It is necessary to assess exactly the concentration of the pollutants in swine wastewater for planning the wastewater treatment facilities. A full-scale operation was carried out in K city and the plant is consists of conventional plant, the supplementary flocculation basin of chemical treatment process and anaerobic·aerobic basin for nitrogen removal. The improved full-scale swine wastewater treatment plant removed the 1,500∼3,000㎎/ℓ of total-nitrogen(T-N) to 120㎎/ℓ of T-N and 131∼156㎎/ℓ of total-phosphorus(T-P) to 0.15∼1.00㎎/ℓ of T-N. Accordingly, as a results of operational improvement, the removal efficiencies of T-N and T-P were over 92∼96%, 99%, respectively. The continuous supply of organic carbon sources and the state of pH played important roles for the harmonious metabolism in anaerobic basin and the pH value of anaerobic basin maintained at about 9.0 for the period of the study.

굴껍질을 이용한 도금폐수의 중화 및 중금속 이온 제거

성낙창,김은호,김정권,김형석 한국환경보건학회 1996 한국환경보건학회지 Vol.22 No.3

The purpose of this research is to examine the utilization of oyster shells for neutralization and removal of heavy metal ions in plating wastewater, because oyster shells have been known to be very porous, to have high specific surface area and to have alkaline minerals such as calcium and magnesium. The results obtianed from this research showed that oyster shells had a buffer capacity to neutralize an acidic.alkali system in plating wastewater. Generally, it could be showed that the removal efficiencies of heavy metal ions were very influenced by reaction times and oyster shell dosages. In point of ocean waste, if oyster shells substituted for a valuable adsorbent such as actviated carbon, they could look forward to an expected economical effect.

축산폐수 처리수 및 농가 생활잡배수의 합병정화조와 Soil Filter 에 의한 연계처리

성낙창,박현건,김은호 한국환경농학회 1998 한국환경농학회지 Vol.17 No.4

본 연구에서는 축산농가에서 환경오염의 저감방안을 강구하기 위하여 축산폐수의 혐기성 처리수와 생활잡배수를 혼합하여 합병정화조와 3단 soil filter를 연계하여 처리한 결과, 다음과 같은 결론을 얻었다. 합병정화조에서 처리함에 있어서 합병정화조내 충전된 여상과 체류시간의 증가로 인한 미생물의 축적에 의하여 NRT 4∼12일에서 CODcr 제거효율은 63.4∼84.0%이며 NH4+-N와 PO43--P는 각각 3.9∼5.4%와 18.3∼29.0%로써 HRT가 증가함에 따라 높은 효율을 나타내었다. 3단 soil filter에 의하여 재처리함에 있어서 표면적 부하율의 점진적인 증가에도 불구하고 여과, 흡착, 이온교환 및 토양 미생물의 작용으로 인하여 표면적 부하율이 증가함에 따라 CODcr, NH4+-N 및 PO43--P의 제거효율은 90% 이상을 나타내었다. 이상의 결과를 미루어볼 때, 오염부하량 감소 및 농업용수로의 재이용 측면에서 축산폐수의 합병정화조와 Soil filter에 의한 연계처리를 할 경우에 '96년부터 적용된 축산폐수의 방류수 수질기준에 적합한 것으로 나타났다. This study was conducted in order to investigate removal rate of organic matter, nitrogen and phosphorus to reduce environmental polluation with treatment to attach combined septic tank to 3 stage soil filter after mixing anaerobic treated water of livestock wastewater and low concentrated wastewater generated in farm house. Because anaerobic filter bed was packed in combined septic tank and a microorganism was accumulated in combined septic tank with increasing hydraulic retention time(HRT), if HRT 4∼12day, CODcr was removed 63.4∼84.0%. Also, NH₄^+-N and PO₄^(3-)-P were removed 3.9∼5.4% and 18.3∼29.0%, respectively. In being re-treated by 3 stage soil filter, although hydraulic loading rate was gradually increased, CODcr, NH₄^+-N and PO₄^(3-)-P were removed above 90% due to filtration, adsorption, ion exchange, and action of soil microorganism. Generally, the attached treatment of combined septic tank and 3 stage soil filter did suitably treat livestock wastewater to water standard of discharge applied from '96 year, in view of decreasing pollution loading amount and recycling of agricultural water.

굴껍질을 이용한 고농도 중금속 폐수처리에 미치는 pH의 영향

성낙창,신남철,최장승 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.2

The purpose of this research is to examine the utilization of oyster shells for the removal of high concentrated heavy metals in an acidic·alkali system wastewater. because oyster shells have been known to be very porous, to have high specific surface area and to have alkaline minerals such as calcium and mangnesium. It could be showed that most of heavy metals intended to increase removal rate with pH increase, but maintained equilibrium and heavy metals were removed high. In 7g and 9g, desorptions were caused by the weak physical coherence of heavy metals. Solubilites of heavy metals increased with Fe>Cu>Cr and Fe removal rate was higher than other heavy metals, because removal rate was influenced by- competitive reaction in same pH rather than solubility. In point of Ocean waste recyling, if oyster shells will use wastewater treatment of acidic and high concentrated heavy metals, they could look forward to an expected economical effect.

조류 부산물중 2-MIB의 제거에 관한 기초연구

성낙창,최용락,김은호 東亞大學校附設 農業生命科學硏究所 1999 農業生命資援硏究 Vol.8 No.1

This experiments were performed using O₃, ClO₂and Granular activated carbon in order to remove 2-MIB(2-Methylisobornelo) causig odor in water. In Freundlich equilibrium experiments, 2-MIB was well adsorbed in PAC comparatively and raw water containing TOC was less adsorbed than distilled water by effect of TOC. Jar tests with coconut-based PAC were showed high removal efficiency of 2-MIB in proportion to contact time and concentration of PAC. Oxidation capacity of O₃was demonstrated to be superior to that of ClO₂. Prepared comparatively highly initial concentration as 1991ppt of raw water was treated with post-O₃in condition of 1ppm and 12min. of contact time and then its residual concentration was approximately 569ppt(70% removal efficiency), and the 2-MIB removal efficiencies of the Post-O₃water through coal, coconut shell, wood and zeocarbon based GAC(granular activated carbon) column were 95.8%, 89.5%, 88.4% and 93.7%, respectively. Coal based carbon have most effective adsorption capacity but wood based carbon have a little lower adsorption capacity than others. In GAC column experiment, TOC, UV-254, 2-MIB and so on ewere removed most effectively in case of A(coal) and for this experiment intervals, the change of water quality(UV-254, TOC) was not happened by input of odor substance(2-MIB).

혐기성 소화에서의 가축분뇨와 음식물류 폐수의 혼합 비율에 따른 유기산 발생량에 관한 연구

성낙창 ( Nak-chang Sung ),권민지 ( Min-ji Kwon ),정진희 ( Jin-hee Jung ),최영익 ( Young-ik Choi ) 한국수처리학회(구 한국수처리기술연구회) 2018 한국수처리학회지 Vol.26 No.2

The overall food consumption in South Korea has increased along with economic growth. Especially, meat consumption has increased significantly, and the size of the animal production industry has also grown greatly. As a result, substantial amounts of livestock wastewater and food waste are being produced. Among them, anaerobic digestion is known as a method of acquiring energy by treating wastes and producing biogas at the same time. This anaerobic digestion process generates organic acids by acid-producing bacteria. When the amount of generated organic acids increases, the pH drops which might be toxic. The purpose of this study is to maintain the optimum pH during anaerobic digestion to control the decrease in digestion efficiency due to a drop in pH by simultaneously treating livestock waste, which have a relatively high pH, without using pH regulators. Three reactors, R1, R2, and R3, were used in this experiment, and each reactor contained a mixture of food waste and livestock wastewater at the ratio of 5:5, 7:3, and 3:7, respectively. After 25 days, R3, the reactor in which the food waste and livestock wastewater were mixed at the ratio of 3:7, showed the optimum or near-optimum organic acid concentration and pH values.