郑州大学 专业英语试题 10级

环境工程、市政工程专业2010级研究生专业英语试卷姓名：专业学号分数

一．将以下简称用英文拼写完整（10×1.0，共10分）

COD

SBR

UASB

MLVSS

HRT

POPs

DO

TSP

CAST

ABR

二．将下列中文词汇译成英文（40×1.0，共40分）

污染物浓度

下水道冲击负荷

有机的异养的

浓度好氧细菌

预处理机械曝气

微生物絮状物

氯化物水解作用

参数酶

可生物降解的抑制的

氧气脱氮除磷

胶体的初沉池

格栅充水比

活性污泥泥龄

曝气池氧化沟

新陈代谢人工湿地

硝酸盐颗粒活性碳

富营养化污泥处置

絮凝剂厌氧消化

吸附生物硝化

反渗透膜排放标准

三将下列段落翻译成中文（3×10.0，共30分）

1. In aerobic processes (i.e. molecular oxygen is present), heterotrophic bacteria (those obtaining carbon from organic compounds) oxidize about one-third of the colloidal and dissolved organic matter to stable end products (CO2+H2O) and convert the remaining two-thirds into new microbial cells that can be removed from the wastewater by settling. Ever since the importance of wastewater treatment became recognized, municipalities and industries have relied almost exclusively on aerobic rather than anaerobic biological processes for treating their liquid organic wastes. Aerobic treatment has predominated because of its simplicity, stability, efficient and rapid conversion of organic contaminants to microbial cells, and relatively odor-free operation.

2 Wastewaters from industries include employees’ sanitary wastes, process wastes from manufacturing, wash waters, and relatively uncontaminated water from heating and cooling operations. The wastewaters from processing are the major concern. They vary widely with the type of industry. In some cases, pretreatment to remove certain contaminants or equalization to reduce hydraulic load may be mandatory before the wastewater can be accepted into the municipal system. In contrast with the relatively consistent characteristics of domestic sewage, industrial wastewaters often have quite different characteristics, even for similar industries. For this reason, extensive studies may be necessary to assess pretreatment requirements and the effect of the wastewater on biological processes.

3. Modification to the basic oxidation ditch design can be made to achieve nitrogen and phosphorus removal. The key to obtaining nitrogen removal is the proper control of dissolved oxygen levels in different sections of the oxidation ditch, and the maintenance of adequate mass of bacteria under aerobic and anoxic conditions. To meet more stringent total nitrogen effluent limits a separate anoxic channel or basin outside the ditch channels may be added. Holding mixed liquid under anaerobic conditions is required for enhanced biological phosphorus removal. This can be accomplished in either a nonaerated channel or by adding an anaerobic basin before the aerobic oxidation ditch channel.