提供全套毕业论文，欢迎咨询 本科毕业设计(论文)题 目: 2000 吨 / 天食品废水处理厂的设计 学 院: 化学工程学院 专 业: 环境工程 班 级: 1002051 学 号: 100205117 学 生 姓名： 指导老师: 职称: 讲师 二○一四 年 5 月 23 日摘 要 UASB-CASS 工艺全称为厌养好氧二级处理活性污泥法， 即污水通过调节池、沉砂池进入 UASB 反应池，在厌氧状态下产生的沼气，与污泥碰撞引起附着气泡的污泥絮脱气，污泥颗粒将沉淀到污泥床的表面。出水进入 CASS 池实行连续进水、静态沉淀和间歇排水，对污染物质降解经历着“好氧—缺氧—厌氧”交替运行的过程，加之采纳延时曝气与生物选择，有效地促进了难降解有机物的好氧生化。在本次工艺中 COD、BOD、SS 的去除率达到：99%、99%、97%，出水达到国家二级标准。工艺由于投资和运行费用低、处理性能高，尤其是优异的脱磷除氮功能而越来越受到重视。该工艺已在酒厂含油废水、食品废水、屠宰废水中得到广泛应用，尤其适用于工业污水和生活污水的处理。 关键词 工业污水，UASB-CASS 工艺，工艺设计Abstract UASB-CASS Technology called the Aerobic disgust Custody of 2 handle Activated Sludge Process , That By regulating sewage into a precipitation tank and two UASB reactor pool , Anaerobic conditions in the gas , Sludge caused by collision with bubbles attached sludge floc degassing , Sludge particles of sludge bed sediments to the surface. CASS pool water entered the introduction of the continuous inflow, Static precipitators and intermittent drainage, Degradation of pollutants experiencing "aerobic - anoxic - anaerobic" alternative process, Moreover, using aeration and biological delay choice Effectively promoting the refractory organics aerobic biochemical. In this process of COD, BOD, SS removal rate : 99%,99%,97%. The water reach the state standards of two. Technology investment and operating costs low, Performance superb handling, Particularly outstanding Phosphorus and nitrogen functional and more importance. The process has been in...
