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수도권매립지 내 슬러지자원화 2단계 시설로 반입되는 각 지자체별하수슬러지의 계절에 따른 특성 조사
변수한,문남구,황규완,김학이,박현서 한국냄새환경학회 2015 실내환경 및 냄새 학회지 Vol.14 No.3
This research studies physicochemical characteristics which can influence process in order to treat sewage sludgeof stage 2 of resource recovery plant. In addition, it seeks also to reduce the variability which can be caused bytreatment processes and develop a plan for an unexpected situation. In 2014, we examined the factors which canhave an effect on plant stage 2 such as hydrogen ion concentration, moisture content, chloride ion concentration,viscosity, organic compound content, odor, etc. Moreover this research targeted sludge from twelve local areasthat is delivered to stage 2 of a resource recovery plant. Consequentially, the study has good results in hydrogenion concentration and moisture content. On the other hand, chloride ion concentration and viscosity cause increaseddrying time or corrode the facility, except for a part of the sludge. In addition, the study demonstrates that sludgeof a sewage treatment plant with a high organic content generates much odor when we researched odor and organiccontent. Moreover, organic compound content contributes to superiority in quality but could also be a weakness. According to the above seasonal data, the operation conditions of stage 2 facilities can be optimized if the sludgecarry-in of each local area is controlled or carried into other facilities.
발전소 보조연료 용도 건조하수슬러지의 악취저감을 위한 첨가제 연구
황규완,김학이,백강수,유윤호,김영철,문남구 한국냄새환경학회 2016 실내환경 및 냄새 학회지 Vol.15 No.3
The purpose of this study is to produce the auxiliary fuel additives that will improve the heat value and reduce the odor of dried sewage sludge, an auxiliary fuel for power plants using process by-products. Through an odor analysis prior to the production of auxiliary fuel additives, it was confirmed that the main odor materials are Methylmercaptan, Acetaldehyde and Trimethylamine. Based on this, we measured the heating value on various processes by-products such as by-products of thermal power generation and by-products of refinery. In addition, the adsorption performance in the major odor material was evaluated. However, for Trimethylamine, it is very difficult to secure the reproducibility of the concentration of the standard materials as the standard material is liquid. Therefore, it was used Ammonia, which has basic property, to replace Trimethyamine. In the evaluation of various process by-products, the highest heating value in heavy oil fly ash was 5,575 kcal/kg, while in the adsorption performance evaluation, FCC was shown as having the best performance in adsorption, as it could adsorb 100% of Methylmercaptan, 47% of Acetaldehyde and 76% of Ammonia. We conducted an adsorption experiment after supporting a transition metal on the FCC in order to improve the adsorption capacity. As a result, it was confirmed the best efficiency when supporting the copper nitrate 0.5% on the FCC. Based on this result, the experiment was conducted to determine the optimal mixing ratio with a high heating value and odor reducing function using Heavy oil fly ash and FCC. The optimal mixing ratio was 90% of Heavy oil fly ash and 10% of FCC. Furthermore, it was found that the most economical performance and highest odor reducing efficiency was achieved when the mixing ratio was 90% of dried sewage sludge and 10% of auxiliary fuel additives.