外文翻译 食品工业污水处理(6)

外文翻译 食品工业污水处理 FOOD INDUSTRY WASTEWATER TREATMENT 食用油生产污水 磷脂 薄层色谱法 污水净化 污水处理

sample was determined using the photometric method of analysis (turbidimetric method). 为了确定BOD-5, 制作经检测水样的中和液，然后倒入一种特别的准备好的、含饱和氧、含有机物的水；保持水样一段时间（5天）恒温20±1摄氏度，满满地放入完全隔绝空气、光照的用瓶塞塞住的瓶子；用碘量滴定的体积表示恒温培养期前后的浓度；水样的浊度用分光光度法（浊度滴定法）。

For identification of fat content of wastewaters, the thin-layer chromatography method was applied with silica gel “H” plates produced by Merk company, layer thickness = 0.3 mm. Chromatography was made in the following systems:

为辨认污水中脂肪的含量，薄层色谱法应用默克公司生产的硅胶“H”板，厚度=0.3毫米。色谱分析法在下列溶液中:

Direction 1: chloroform: methanol: 25 % aqueous solution of ammonium in the following proportions: 65-25-2.

Direction 2: chloroform: methanol: acetic acid: water; proportions: 85-15-10-3. 方法1：氯仿：甲醇：25%的硝酸铵水溶液：比例:65-25-2。

方法2：氯仿：甲醇：醋酸：水；比例:85-15-10-3。

After preliminary neutralisation and deposition of sulphates, the wastewater (qty = 50 mcL) was applied on the plate in right lower angle. After drying, the plate was inserted into the chromatographic chamber filled with a system of solvents for Direction 1. After the F1 Solvent Front was passed, the plate was removed and air-dried. Then it was turned over 90° clockwise compared to its initial placing, and again inserted into the chromatographic chamber filled with a system of solvents for Direction 2. After passing of F2 Solvent Front, the plate was removed and air-dried. Then it was developed in an exsiccator saturated with iodine steam for about 15 minutes. The phospholipids manifested themselves on the chromatogram in the form of yellow stains.

经过初步硫酸盐中和和沉淀，污水（数量=50mcl）涂抹在感光片右下角。经过干燥，感光片插入到装满方法1溶液的色谱仪内。在通过F1溶剂后，将感光片移开、风干。接着顺时针转90度和最初的进行比较，再一次插入到装满方法2溶液的色谱仪内。在通过F2溶剂后，将感光片再次移开、风干。然后放入碘蒸汽中15分钟显影。磷脂显示着各种黄色的色谱图。

It was detected that oil production-related wastewaters contain the following phospholipids (Figure 1):

这是市面上检测到的油制造行业污水所包含的磷脂(图1)：

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