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염색폐수에 포함된 색도와 유기물의 효과적인 동시제거 방안
조병락(Byeung-Rak Cho) 한국환경관리학회 2009 環境管理學會誌 Vol.15 No.2
날염폐수 중의 색도와 유기물을 동시에 효과적으로 제거하기 위하여 새로운 복합조성물을 합성하고 그 효과를 검증하였다. 색도제거 효과는 단일 약품보다는 복합조성물이, 복합조성물에서는 성분수가 많을수록 상승효과를 가져왔으며, Fe(2)염 : Fe(1)염 : Al(1)염의 2 : 1 : 0.5 조성물이 가장 우수하였다. 유기물 제거를 위한 최적 응집조건은 응집제로는 Fe(2)염, 주입량은 2,000 ㎎/L, pH는 7.5이었으며, 새로운 복합조성물 DFC100을 사용한 pilot plant 연속실험에서 COD는 평균 63%, 색도는 평균 84.1%의 높은 제거효과를 나타내어 색도와 유기물의 동시제거에 만족할만한 결과를 얻었다. This study synthesized the new complex-coagulant and verified its effects to remove the colors and organics of printing wastewater simultaneously. For effects of the color removal, complex coagulants, rather than simple coagulant, and complex coagulants with many ingredients had a upward tendency, of which Fe(2)salt : Fe(1)salt : Al(1) salt 2 : 1 : 0.5 coagulants were the best. The optimum conditions of coagulation for removing organics are as follows; coagulant is Fe(2)salt, injection quantity is 2,000㎎/L, and pH is 7.5. The pilot plant continuant experiment, using DFC100, shows that COD is 63% in average, color is 84.1% in average, means high removal effects. So, this study provides the satisfied results for the removal of the color and organics simultaneously.
분해탈기법에 의한 염색폐수 중의 고농도 질소 제거에 관한 연구
조병락(Byeung-Rak Cho) 한국산업융합학회 2002 한국산업융합학회 논문집 Vol.5 No.3
Total nitrogen is a major pollutant which mostly causes eutrophication and red tide. Wastewater effluent from printing of cotton-viscose rayon containing high concentrations of total nitrogen can not be effectively treated with a typical biological treatment process. This paper provides a new treatment process and experimental results for the removal of high strength nitrogen from dyeing wastewater. The optimum conditions of air stripping for the removal of total nitrogen include around pH 12, temperature 60℃ with 60 minutes of stripping time. In case of a filtration-air stripping process, an initial level (500㎎/ℓ) of total nitrogen was significantly reduced to below 60㎎/ℓ. Deconite was synthesised for further decomposition of organic nitrogen. Thus, a filtration-decomposition-air stripping process was possibly achieved, by which a high level (900㎎/ℓ) of total nitrogen was effectively removed to below 60㎎/ℓ P. Finally, a continuous new process for the removal of total nitrogen is proposed and confirmed, based on batch experimental results, and its process validity is further discussed throughout.<br/> <br/>
간이상수도 자동소독 정수기의 개발 및 성능에 관한 연구
조병락(Byeung-Rak Cho),이배복(Bae-Bok Lee),최명부(Myeung-Bu Choi) 한국산업융합학회 2013 한국산업융합학회 논문집 Vol.16 No.2
On the purpose of helping the inhabitants living in farming, fishing villages, and islands for more safe and hygienic water from simple waterworks, experimental investigations were performed concerning the development of a water purifier with silver nanomaterial packed, having a function of the auto-disinfection. The results show as follows through such filteration and auto-disinfection processes. It is possible to get hygienic and safe water, for example, more than 95% of general bacteria, total coliforms, and fecal coliforms were removed. It is also possible to get good-quality water, for 49.4% of spent potassium permanganate and 85% and 63% of turbidity and conductivity were removed respectively. It is a very effective equipment, for 100% cost reduction of used chemicals was achieved by no-chemical disinfection process and THM was not generated.
조병락(Byeung-Rak Cho),서유덕(You-Duck Suh) 한국환경관리학회 2012 環境管理學會誌 Vol.18 No.4
본 연구에서는 새로운 불소처리제를 합성하고, 이를 이용하여 전자폐수에 대한 불소, COD, 칼슘제거율 및 슬러지 감소효과를 검토하였다. lime과 KE-100에 의한 불소 처리효율은 각각 90.7% 및 94.7%, COD 처리효율은 41.9% 및 69.7%로 나타나 새로운 불소처리제(KE-100)에 의한 불소 및 COD 처리효율이 각각 4% 및 27.8% 향상되어 나타났다. KE-100 및 lime으로 응집한 경우의 Ca<SUP>2+</SUP> 농도는 각각 840㎎/ℓ 및 2,280㎎/ℓ으로 나타나 KE-100으로 응집한 경우 Ca<SUP>2+</SUP> 농도가 2.7배 정도나 크게 감소되었다. KE-100 및 lime으로 응집한 경우의 슬러지 발생량은 각각 9 ㎏/㎥·폐수 및 22.5 ㎏/㎥·폐수로 나타나 새로운 불소처리제 KE-100을 사용하면 약40% 정도 슬러지 저감효과가 크게 나타났다. In this research, We synthesized a new fluorine treatment reagent and investigated treatment efficiency of fluorine, COD, Ca<SUP>2+</SUP> and sludge amount. Fluorine treatment efficiencies were 90.7% and 94.7% by lime and KE-100. In addition, COD treatment efficiencies were 41.9% and 69.7% by lime and KE-100, respectively. Fluorine treatment efficiency and COD treatment efficiency were increased by 4% and 27.8% with KE-100. Ca<SUP>2+</SUP> concentration with KE-100 was 840㎎/ℓ and it was 2.7 times smaller than Ca2+ concentration with lime. Ithe amount of Sludge with KE-100 coagulation was 9 ㎏/㎥ and it was 40% smaller than the amount of Sludge with lime
효과적인 구리 제거제 합성 및 처리 기술 개발에 관하여
조병락(Byeung-Rak Cho) 한국산업융합학회 2013 한국산업융합학회 논문집 Vol.16 No.2
This paper synthesized the new copper removal agent(PW-2001) and investigated removal efficiency of copper, COD, calcium, SS and sludge amounts. Removal efficiency of copper were 96.1% and 99.1% with the lime and PW-2001, respectively while COD removals reached up to 38% and 69.6% with the use of lime and PW-2001. The concentrations of calcium and SS with PW-2001 were decreased 2.68 and 4.95 times lower than those with lime. Amount of sludge with PW-2001 was 60% smaller than lime. Quantity of PW-2001 needed for coagulation only reached 58.7, compared to lime standard quantity(100), and total cost of copper removal with PW-2001 was saved 25% more than lime.