黄羊镇位于河西走廊东端,地处武威市城区东南,距武威市政府所在 地凉州城区 35 公里、距兰州 240 公里处。是武威市的主要粮食产区之一。 估测现有排水量已达近2 万吨/日,没有污水处理厂,污水仅能靠道路边沟 向河体直接排放,街区污水横溢,大大影响市容环境,已经严重干扰到城 区人民正常的工作生活,制约了镇区经济的发展
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一、 生态学与环境学和保护生物学之间的区别 二、生态学思想的历史溯源 三、科学地定义生态学 四、学习科学的方法 五、生态学的结构 六、掌握重点
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第一章 terminology 术语学,术语 ventilation 通风 ammonia 氨 corrosion 腐蚀 colloidal 胶质的,胶体的 modify 修改 biodegradable 生物可降解的 innovative 创新 pathogenic 致病的,病原的 partnership 合伙,伙伴
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(一) 填空题 (请将正确的答案填在横线空白处) 1.废水处理的最终目标同该厂所在地区整体的环境目标紧密相关。 2.按作用原理,废水处理方法分为物理法、化学法和生物法三种基本类型。 3. 格栅按清渣方式分为人工格栅和机械格栅两种
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ENGINEERING DEPARTMENT OF ENVIRONMENT SCIENCES SCHOOL OF RESOURCES AND ENVIRONMENT SCIENCES EAST CHINA NORMAL UNIVERSITY 2004
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Part I Wastewater Engineering 1 Wastewater Engineering: An Overview 2 Constituents in Wastewater 3 Analysis and Selection of Wastewater Flowrates and Constituent Loadings 4 Introduction to Process Analysis and Selection 5 Physical Unit Operation
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The first three types of control devices we consider--gravity settlers, cyclone separators, and electrostatic precipitators--all function by driving the particles to a solid wall, where they adhere to each other to form agglomerates that can be removed from the collection device and disposed of
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Attached growth processes can be grouped into three general classes: (1) nonsubmerged attached growth processes, (2) suspended growth processes with fixed-film packing, and (3) submerged attached growth aerobic processes. Nonsubmerged Attached Growth Processes. Trickling filters with rock packing have been a common
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The activated-sludge process is now used routinely for biological treatment of municipal and industrial wastewaters. The antecedents of the activated-sludge process date back to the early 1880s to the work of Dr. Angus Smith, who investigated the aeration of wastewater in tanks and the hastening of the oxidation of the organic matter
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