This study was conducted to investigate the treatment of wastewater from acetaldehyde manufacturing plant by activated sludge process with Micrococcus roseus AW-6, Micrococcus luteus AW-22, Microbacterium lacticum AW-38 and Microbacterium laevaniformans AW-41. The COD_Mn and BOD_5 of the wastewater were 5,260㎎/L and 6,452㎎/L, respectively. pH was 1.85. The main organic component in the wastewater was acetic acid which was contained 67,600㎎/L. Optimum dilution time for activated sludge process was shown 10 times. The specific substrate removal rate(K_e) was 1.95day^-1 and the nonbiodegradable matters(S_n) were 23.2㎎/L. Saturation constant (K_e) and maximum specific growth rate(q_max) were 1,640㎎/L and 2.33day^-1, respectively. Sludge yield coefficient(Y) and endogenous respiration coefficient(K_d) were 0.28㎎ MLVSS/㎎COD and 0.02day^-1, respectively. COD_cr removal efficiency was 91% for 1.95day of hydraulic retention time.

The purpose of this study was to evaluate the partial oxidation of the biological treatment plant effluents using Fenton`s reagent as a pretreatment step prior to a tertiary biological oxidation of these effluents. Fenton`s reagent was evaluated as a pretreatment process for inhibitory or refractory organics. Based on the Fenton oxidation system, the petrochemical wastewater treatment plant effluent was shown to have significant improvement in toxicity after oxidation with hydrogen peroxide. For example, at range of 42∼184 ㎎/L COD of petrochemical plant effluents, the COD removal efficiencies were from 38.2% to 60.1% after reaction with hydrogen peroxide 200 ㎎/L and Fe^2+ 100 ㎎/L and reaction time was 30 minutes. The total TOC reduction were about 15.8∼22.4% with same test condition and difference between the overall removal rate and BOD/COD ratio after Fenton`s oxidation estabilished in the biodegradation and otherwise meets the discharge standard or reuse for cooling tower make-up water.

우리 나라에서 한양재료로 사용되고 있는 약초의 어린잎과 전초(全草)를 산채류로 이용하기 위한 기초자료를 얻기 위하여 식용이 가능한 7종의 약초 어린잎 및 전초(全草)의 일반성분, 무기성분 및 아미노산등을 분석하였다. 독활을 포함해서 7종의 약초 어린잎 및 전초(全草)의 수분함량은 79.74~85.97%의 범위로 다른 야채류에 비해 낮게 나타났으며, 조단백질의 함량은 당귀(1.12%)와 방풍(1.27%)을 제외하고는 대부분 2%정도로 야채류와 비슷한 경향을 보였다. 그리고 조지방은 0.69~1.36%, 조섬유는 1.8~3.9%, 조회분은 1.58~2.79%의 범위로로 각각 나타나 종류 별로는 다소의 차이를 보이고 있으나 일반 야채류와 대체적으로 비슷하였다. 무기성분에서는 모든 시료에서 K함량이 202~504mg%로 가장 높았고 Ca, Mg 및 Natns으로 나타났다. 총 아미노산의 함량은 두릅 965mg%, 황금 930mg%, 독활 879mg%, 일당귀 851mg%, 배초향가 747mg% 및 방풍 615mg%의 함량을 보였다. 아미노산의 조성을 보면 약초의 종류에 따라 아미노산의 종류별 함량 차이가 있으나 전반적으로 aspartic acid와 glutamic acid가 공통적으로 많았으며, methionine과 cystine은 모든 시료에서 가장 적게 나타났다.

A lot of sludges occur during an activated sludge treatment process of the washing wastewater and by-product waste in the cuttlefish processing manufacture. The sludges give also out a bad smell, and their amicable reclamation is very difficult because of the limited area of the filling-up. To reduce the heavy weight and large volume of the sludges, they was burning up. After the burning up at 350℃ for 2hrs the weight(volume) of the sludges were reduced to 5% level of the initial value. In contents of the bad heavy metals for human after the burning up, cadmium and lead metal were slightly detected, while mercury and the bad others not detected.

주요(主要) 한약재(韓藥材)로 이용(利用)되고 있는 약용식물(藥用植物)인 황금(黃芩), 독활(獨活), 곽향(藿香)을 채소화(菜蔬化)하기 위하여 파종기(播種期) 및 재식밀도시험(栽植密度試驗)과 양액재배(養液栽培)를 실시(實施)하여 대량생산(大量生産) 가능성(可能性)을 검토(檢討)한 결과(結果)는 다음과 같다. 1 채소화(菜蔬化) 가능(可能) 약용식물중(藥用植物中) 황금(黃芩)과 곽향(藿香)은 도장(圖場)의 출현율(出現率)이 높아 초밀식재배(超密植栽培)가 가능(可能)하여 대량(大量) 생산(生産) 할 수 있을 것으로 본다. 2. 채소용(菜蔬用) (가공용(加工用)) 유식물체(幼植物體)의 생산(生産)을 위한 밀식재배시(密植栽培時) 황금(黃芩)과 곽향(藿香)은 4월(月) 초순(初旬) 파종(播種)이 가장 유리(有利)하였으며, 재식밀도(栽植密度)는 초밀식재배(超密植栽培) 10×5cm(200주(株)/m2)가 유식물체(幼植物體) 생산(生産)이 증수(增收)되는 경향(傾向)이었다. 3. 식물공장(植物工場)시스템을 이용(利用)하기 위한 양액재배시(養液栽培時) 곽향(藿香)은 여액수경(濾液水耕) 방식(方式)에서 일본야채(日本野菜) 표준액(標準液)에서 재배(栽培)가 가능(可能)하였다.

In order to establish utilijzation of medicinal herb as vegetable by Hydroponics, the present studies were conducted to investigate the effect of temperature and light on the seed germination ofmedicinal herb. The results obtained are summaried as follows. The lower and upper temperaturelimit for herb germination was 10'c and 30'c within which the optimum was 20'C. Germinationof medicinal herb was similar in light and dark condition.