• Environmental engineer
• /
• s.40
• /
• pp.50-53
• /
• 1989

본 회사는 제비표 페인트 제조회사인 건설화학과 대일본 잉크화학공업(주)와 합작회사로서 1971년에 설립되어 공업용 접착제인 페놀수지를 국내 최초로 생산하여 자동차, 도료, 전자산업 발전에 이바지하였고, 각종 도로 경기장을 우레탄 수지를 생산하므로서 88올림픽 경기를 통하여 국제적으로 품질의 우수성을 인정받은 바 있습니다. 현재 반월공장은 대지가 12,523평, 건평 4,694평, 종업원 280명으로서 안양에서 '88. 10.12 이전하여 본사와 공장기능

• Applied Chemistry for Engineering
• /
• v.8 no.3
• /
• pp.482-488
• /
• 1997

Copper recovery from waste water of electronic industry has been conducted effectively in a fluidized bed reactor. Initial concentration of copper in the waste water, liquid flow rate in the reactor, reaction temperature and time and current density between the cathode and anode in the reactor have been selected as operating variables. The effects of operating variables on the recovery of copper have been studied. It has found that the copper resolved in the waste water can be recovered continuously by means of a fluidized bed reactor The recovery of copper decreased with an increase in the initial concentration of copper in the waste water, while it increased with increasing reaction time and current density, however, it exhibited its maximum value with the variations of liquid flow rate and reaction temperature. The optimum reaction condition to maintain the copper recovery around 85% is as follows ; $X_o=3wt%$, $U_L=0.5cm/s$, $T=25^{\circ}C$, $I=7A/dm^2$ and t=2hrs within this experimental condition.

• Korean Journal of Microbiology
• /
• v.25 no.4
• /
• pp.328-332
• /
• 1987

As a research for treatment of waste water from acetaldehyde plant by biological method, we investigated general characteristics of the waste water, and isolated and identified some useful bacteria which effectively treated its waste water. Among the total number of 53 strains which were grown in waste water from an acetaldehyde plant, the strains AW-6, AW-22, AW-38 and AW-41 were found to be useful for COD removal of waste water. $COD_{Mn}$ and $BOD_{5}$ of the waste water were 5260 ppm and 6452 ppm, respectively, and pH was 1.85. And the main organic component in waste water was acetic acid which was contained 6.76%. By the taxonomical characteristics, the strains AW-6, AW-22, AW-38 and AW-41 were identified as Micrococcus roseus, Micrococcus luteus, Microbacterium lacticum and Microbacterium laevanifromans or similar strain, respectively.

• Journal of Wetlands Research
• /
• v.18 no.3
• /
• pp.286-291
• /
• 2016

This study was carried out to evaluate the feasibility of air-stripping by DIWS(Dip Injection Wet Scrubber) system on high concentration of ammonia wastewater more than 10,000 mg/L. In the case of changing temperature from $30^{\circ}C$ to $70^{\circ}C$ maintaining pH 12.5 within the 72 hours, the removal efficiency of T-N by the present treatment plant was increased to 90.5% which was initially kept 70.3%. Although the high concentration of T-N with 9,120~12,955 mg/L was treated by micro-bubble through DIWS system maintaining the temperature of $30^{\circ}C$ within the 20 hours, the removal efficiency of T-N reached 91.9%, which indicated the possibility of air-stripping.

• 한국수산학회:학술대회논문집
• /
• 2005.05a
• /
• pp.61-62
• /
• 2005

• Bulletin of Korea Environmental Preservation Association
• /
• v.8 no.19
• /
• pp.22-26
• /
• 1986

• Journal of the Korean institute of surface engineering
• /
• v.8 no.2
• /
• pp.7-13
• /
• 1975

• Environmental engineer
• /
• s.88
• /
• pp.31-42
• /
• 1993

• Journal of the Korean institute of surface engineering
• /
• v.16 no.1
• /
• pp.10-27
• /
• 1983

• 레미콘
• /
• no.9 s.21
• /
• pp.4-12
• /
• 1989