英语翻译Rotating biological contactor treatment system (Lab Unit

英语翻译
Rotating biological contactor treatment system (Lab Unit)
The rotating disc experimental unit (RBC),which is shown in Fig.3,consists of 5.19 L basin,divided into four compartments of equal volume,32 PVC discs were mounted on horizontally shaft rotated by a variable speed electric motor.Each compartment accommodated 8 discs of 14 cm diameter.The (PVC) discs provide 0.95 m2 of total surface area for microbial growth and were submerged in the
tank to about 50% of the disc diameter.The discs were rotated at 4 rpm.The RBC is followed by afive liters sedimentation unit.The RBC system wasfed continuously by pretreated wastewater.The biological unit was operated at hydraulic load around 0.03 m3 /m2 d.The average organic load was 0.63g BOD/m3 /d.
Anaerobic treatment system
The experiment was performed in 1.7-liter volume prespyx laboratory-scale UASB reactor with effective volume 1.5 liter (Fig.4).The reactor was inoculated with 11.5 g VSS/l flocculent sludge from a nearby anaerobic sludge treatment plant.The reactor was equipped with solid-gas separators.The reactor was fed continuously with the pretreated wastewater at two different hydraulic retention times of 8 and
6 hrs.
Results and discussion
Production process
Figure 5 illustrates the main processes for flavors manufacturing.Diverse types of raw materials in powder or liquid forms are included in the flavors manufacturing,
for example tomato,onion,pepper,garlic lemon oil,orange oil,sugar and salt etc.The powder flavors are produced after being passed through four processes.Grinding of crystal size raw materials is carried out then steam treatment is performed to melt fatty ingredients,followed by blending the different components according to a set proportion and the product is then packed before it is ready for distribution.The liquid flavours production comprises only two steps,the mixing process whereby ingredients are mixed according to specification then the product is packed and distributed.The production processes clearly require cleaning of the vessels used in each process.Water is used for such cleaning and it carries pollutants before being discharged into the sewerage system.General cleaning of the processing area constitutes another source of wastewater.Therefore,the treatment has to be carried out on the end of pipe.

生物转盘处理系统(小试试验装置)
生物转盘装置图如图3所示.反应池容积为5.19L,等分为四个区域,32个聚乙烯转盘安装在水平轴上由变速电动机带动旋转.每个区域安装8个直径为14厘米的转盘,每个聚乙烯转盘提供的微生物生长面积为0.95m2,转盘一半浸没在水下.转盘转速为4rmp.生物转盘系统之后是一个5L的沉淀池.预处理水不断进入生物转盘系统,其生物单元的水力负荷为0.03m3/m2d.平均有机负荷为0,63gBOD/m2d.
厌氧处理系统
试验在1.7L有机玻璃制成的实验室规模的UASB反应器中进行,其有效反应容积为1.5L,如图4所示.反应器污泥为11.5gVSS/L,接种自邻近的厌氧污泥处理厂.反应器中设置固气分离器.该反应器以8小时和6小时两种水力停留时间连续处理经预处理的污水.
结果与讨论
生产工艺
图5介绍了香料生产的主要流程.香料制作包括各种粉末或液体原料,如番茄,洋葱,辣椒,大蒜柠檬油,橙油,糖和盐等.香料制作有四个过程,磨成晶粒的原料经蒸汽处理形成熔融脂肪材料,然后根据一定的比例与气体成分混合并在配送前进行产品包装.液态香料仅包括两个步骤,根据规定将原料混合,然后包装配送.生产过程中,明确规定清洁各个生产过程的容器.水用于清洁容器并将污染物排入污水系统.一般工艺过程的清洗是污水的又一来源.因此,处理需要在排水管末端进行.
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