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.

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.

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.

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.

마이크로파-열풍 융합 건조공정을 통한 유기성 폐기물의 고형연료(RDFs) 특성에 관한 연구

성낙창 ( Nak-chang Sung ),정병길 ( Byung-gil Jung ),최영익 ( Young-ik Choi ) 한국환경기술학회 2013 한국환경기술학회지 Vol.14 No.2

본 연구는 마이크로파-열풍 융합건조장치를 이용하여 유기성 자원의 활용하기 위해 음식물류 폐기물, 무연탄, 폐플라스틱 및 톱밥의 혼합비율에 따른 RDF(refuse derived fuel)의 품질 및 특성을 평가하고자 하며, 또한 건조물질의 삼성분(수분, 가연분, 회분), 발열량(고위발열량, 저위발열량), 금속 함량(Hg, Cd, Pb, As), 황분 함유량, 염소함유량 등 고형연료로서의 품질특성을 평가하였다. 본 연구에 사용된 음식물 쓰레기는 가연성 물질의 균질 혼합 및 건조효율 향상을 위하여 전처리를 실시하였고. 음식물 쓰레기의 건조효율 향상 및 발열량을 향상시키기 위해 2 mm 이하로 분쇄된 분말 형태의 저품질 무연탄 (Ac ; Anthracite coal), 폐플라스틱 (Wp ; Waste plastics) 및 분말 톱밥 (Sd ; Sawdust)을 혼합하여 건조실험을 실시하였고, 완전건조(함수율 10%)를 기준으로 운전하였다. 마이크로파-열풍 융합건조공정을 이용한 실험결과 최적 혼합비율은 음식물 쓰레기 70%와 톱밥30%를 혼합하였을 경우이며, 고형연료 품질기준을 분석한 결과 저위발열량은 5,663 kcal/kg(RDF 등급기준 2등급), 염소 함유량은 0.39% (RDF 등급기준 1등급), 수분 2.5% (RDF 등급기준 10% 미만), 회분 2.2% (RDF 등급기준 20% 미만), 황분 0.22% (RDF 등급기준 0.6% 미만)으로 나타났다. 중금속 함유량은 검출되지 않거나 허용한계에 비해 현격하게 낮은 수준으로 함유되어 있었으며, 고형연료 품질기준이 가장 우수한 것으로 나타났다. The objectives of this study are to develope a method for recycling organic matter by using the microwave-thermal air hybrid drying process and to assess the quality and characteristics of RDF(refuse derived fuel) in terms of its 3-component analysis (water content, ash content and combustible content), heating values(high and low heating values), metallic ingredient contents (Hg, Cd, Pb and As), sulfur content and chlorine content based on operating parameters such as mixture ratios with food waste, anthracite coal, waste plastics and sawdust.The experiment using the microwave-thermal air hybrid drying process proved that an optimal mixture ratio was 70% of food waste and 30% of sawdust. The food waste used in this research was pre-treated for better drying efficiency. Also, to improve drying efficiency and heating values of food waste, an experiment was carried out to dry a mixture of powder-type low-quality Ac (Anthracite coal), Wp (Waste plastics) and Sd (Sawdust), all of which were ground to less than 2 mm. This experiment was also carried out in order to achieve less than 10% moisture content. The analysis of the RDF quality as the quality standard was observed the low heating value of 5,663 kcal/kg (2nd-class RDF); the chlorine content of 0.39% (1st-class RDF); the water content of 2.5% (less than RDF class standard of 10%); the combustible content of 2.2% (less than RDF class standard of 20%); and the sulfur content of 0.22% (less than RDF class standard 0.6%). Heavy metals were not detected or found significantly lower than permissible limits.

정수처리공정의 침전지에서 부착조류의 특성과 이취발생에 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

The purposes of this study were to investigate species of attached algae, and determine these characteristics and relations of odor origin for estimating its source in tap water. Oscillatoria sp. and Mougeotia sp. were colonized at the upper and lower of sedimentation basin in water treatment plant, respectively. In the results that they were analysed to collect colonies of Oscillatoria sp. and Mougeotia sp, they did not detected inodorous Mougeotia sp. but Oscillatoria sp. of some decayed odor did geosmin 3.7ppt and Dimethyl-disulfide with trace. 20species compounds were found in each of sample that were incubated in room temperature for 5days, 4species of these were THMs originated tap water and concentration was 35㎍/ℓ, and 16species compounds were by algac. Especially, sulfur compounds of 10species such as Dimethyl-sulfide were initially not detected but did very much. Also, Indole and Naphthalene were small detected. Considering characteristics of decayed decomposed sampling, generated byproduct for decayed algae of 2species turned out to be nearly identical. If estimating course of odor generation in tap water, chlorine tolerative algae formed big colony to be attached in sedimentation basin and decay was advanced with varying anaerobic condition inside colony's algae. Therfore, a lump of algae detached in suspended state flowed in filter bed, and owing to decayed colony's algae, generated inodororus material could inflowed tap water.