The mother machine makes the necessary shape by processing materials such as metal. The SCFs are applied to the processing surface when the mother machine processes the material, thereby improving the cutting conditions. SCFs contain high concentrations of organic components and nitrogen compounds, which can cause problems such as eutrophication and algae bloom. Therefore, proper treatment is required. Electrochemical treatment is expected to be an alternative to conventional processes, and to be useful in various wastewater treatments. Moreover, it is an efficient elimination technique for contaminants and has a simple equipment composition. In this study, the removal efficiency of the T-N contained in the waste SCF using electrochemical treatment is analyzed. The electrode was made of titanium and iridium, made into a perforated metal sheet to prevent an imbalance of the sample concentration in the reactor. Experiments were conducted to examine the effects of current density and the concentration of the supporting electrolyte (NaCl, Na2SO4) on removal efficiency. In the cases with 60 A/m2, 80 A/m2, and 100 A/m2 current densities, the removal efficiencies of the T-N contained in the waste SCF were 51.03%, 68.83%, and 79.58%. Comparing between the addition and non-addition of NaCl, the removal efficiency with the addition of NaCl (5 ~ 10 mM) was higher than for no addition at 60 min for all current densities. The addition of Na2SO4 increased the removal rate of the T-N, but it was less effective than NaCl addition.

The use of Soluble Cutting Fluids (SCF) is essential in the development of industrial technology. However, it is difficult to decompose biologically due to its high concentrations of organic substances and nitrogen compounds, which interfere with microbial growth. Recently, Advanced Oxidation Processes are being studied both domestically and internationally. Electrolysis is highly adaptable industrial wastewater treatment because it has high removal efficiency and short processing time, regardless of the contaminant’s biodegradable nature. Accordingly, this study shows the characteristics of total nitrogen removal in SCF on the operating time, current density, and electrolytes when using aluminum in a batch-type reactor. The results are as follows: ① Under the condition of without the electrolyte when the current density was adjusted to 40 A/m2, 60 A/m2, or 80 A/m2, the respective T-N removal efficiencies were 71.7%, 80.6%, and 87.2% at 60 min. ② In the comparison for the condition of whether NaCl was added, the removal efficiency of adding NaCl (5 ~ 10 mM) was higher than non-addition at 60 min for all current densities. ③ In the comparison for the condition of whether Na2SO4 (5 ~ 10 mM) was added, the removal efficiency when adding Na2SO4 showed no significant difference compared to non-addition at 60 min for all current densities.

생활쓰레기의 성분은 수집대상 지역의 성격, 수집목적 및 수집방식 등 여러 가지 요인에 따라 매년 변화하게 되므로, 처리시설의 운전 시에는 생활폐기물의 양과 성분을 정확히 측정한 후, 쓰레기의 연소특성을 충분히 예측하여 처리시설의 운전을 결정하여한다. 본 연구는 군단위 지역에서 배출되는 생활 쓰레기의 성상 및 특성을 분석하여 생활폐기물 소각시설 설치에 필요한 기초자료 확보하고자 실시하였다. 조사 범위는 폐기물의 겉보기 밀도와 물리 조성비(가연성 물질 및 불연성 물질 등 10분류)등을 측정하고, 삼성분(수분, 가연분 및 회분)을 실시하였으며 화학적조성 6항목(C, H, O, N, S, Cl) 및 고위 및 저위발열량을 조사하였다. 조사결과 겉보기밀도는 133.32㎏/m³, 물리적 조성비에서는 가연성물질이 91.9% 였고 불연성 물질이 8.1%를 차지하였다. 물리적조성비에서는 음식물 8.8%, 종이류 31.5%, 나무류 2.8%, 고무피혁류 2.7%, 플라스틱류 22.2%, 기타 23.9%로 조사되었다. 삼성분분석에서는 수분이 26.7%, 가연분이 58.9%, 회분이 14.14.4%를 차지하였다. 화학적 조성에서는 C 44.6%, H 9%, O 44.9%, N 0.8%, S 0.08%, Cl 0.6% 기타 11%로 측정되었다.

This study, changes in raw water quality is to indicate on the efficiency of ozone treatment of each pollutant as compared to derive the appropriate operating measures. The appropriate selection for injection rate of pre-ozone and did not inject pre-ozone assess changes in the water. When good water quality, you not injected of pre-ozone to evaluate the economic efficiency of electricity and put the most cost-effective ozone concentration were evaluated. Evaluation remove organic matter and chlorophyll-a concentration level in experiments with each factor of the water DOC> 2.5 ㎎ / L, THMFP> 70 ㎍ / L, Chl-a> 30 ㎎/ ㎥or less constant process, if you do not need to put pre-ozone showed little impact. It also does not put you in pre-ozone appropriate produce enough power rate savings was calculated as approximately 90 million won. Ability to remove organic materials and the ability to produce disinfection byproducts, and cost-effective decisions by considering the concentration of injection if pre-ozone 1 mg/L was investigated by the appropriate concentration of ozone injection.

This is made of domestic and foreign coal activated carbon of five species, physicochemical adsorption efficient about sterilize products and micro harmful substances and is a result of the economic evaluation. The most well-developed micropores bed volume 123,409 of AC-1 activate carbon appeared to be the best next AC-2, AC-3, AC-4, AC-5 followed by activated carbon was investigated. PFOA and PFOS in the BV 96,000 when evaluating foreign types of adsorption activated carbon adsorption capacity was greater when more than PFOA, PFOS showed that the adsorption well. The economic evaluation of activated carbon usage in chloroform (CUR) was most excellent as a AC-1 4.3 g/day, the next AC-2, AC-3, AC-4, AC-5 there are two types of foreign economic order appears to have appeared, but the current domestic market when applying the price AC-1, AC-3, AC-2, AC-4, AC-5 order was investigated.