给排水专业外语Unit-16--Anaerobic-BiologicalTreatment.pptVIP

Unit 16 Anaerobic Biological Treatment Important Words and Expressions oxygen-free adj. 无氧气的 undergo vt. 经受；遭受；忍受 microorganism n. 微生物 consume vt. 消耗, 消费, 耗尽 biodegradable adj. 可生物降解的 sludge n. 下水道的污泥 anaerobic digestion 厌氧消化 leftover adj. 剩下的，多余的 initial stages 初级阶段 ammonia n. 氨 hydrogen n. 氢，氢气 carbon dioxide 二氧化碳 methanogen n. 产烷生物 biogas n.. 生物气，沼气 methane n. 甲烷 greenhouse gas 温室气体 postulate vt. 假定, 假设 controversy n. 争议 fossil fuel 矿物燃料 carbohydrate 碳水化合物 fat 脂肪 protein adj. 蛋白质 fatty acid 脂肪酸 amino acid 氨基酸 carbonic acid 碳酸 acetic acid 醋酸 hydrolysis n.水解作用 acidogenesis n. 酸化 acetogenesis （乙）酸化 methanogenesis 甲烷生成 Text Anaerobic biological treatment is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen. After undergoing such a treatment, water can be safely released back into the environment. The biological agents used in the process are anaerobic microorganisms that consume or break down biodegradable materials in sludge, or the solid portion of wastewater following its filtration from polluted water. Anaerobic biological treatment is used for industrial or domestic purposes to manage waste or to release energy. Anaerobic biological treatment is also known as anaerobic digestion due to the action of the microorganisms. That is, they are essentially digesting the polluted parts of the water. An excellent way to decrease the amount of organic matter leftover in things such as sewage and leftover food, anaerobic digestion is typically a component of any biological wastewater treatment system. Usually, the anaerobic process takes place in sealed tanks, located either above or below the ground. The digestion process begins with bacterial hydrolysis of the input materials to break down insol