【作者】 王娜；

【导师】 祁佩时；

【作者基本信息】 哈尔滨工业大学 ， 环境科学与工程， 2008， 硕士

【摘要】 抗生素制药废水一般具有高浓度、高色度、成分复杂、难降解的特点,是一种典型的难降解有机废水。即使经过了二级生物处理,出水中仍含有部分的色度和难降解有机污染物（主要以COD的形式体现）,如直接排放水体,将会对环境产生持久性危害,影响人们的正常工作生活。如何对抗生素制药废水进行有效可行的深度处理,是制药行业中亟待解决的一大难题。铁炭微电解-Fenton试剂氧化工艺和铁炭微电解-混凝剂处理工艺均具有投资少,运行成本相对较低,设备占地面积小,工艺操作简单的特点,且工艺中所用铁屑取自工厂的废铁屑或者铁刨花,活性炭可以用粉煤灰或焦炭代替,具有以废治废的意义。本文以某制药厂二级污水站出水为研究对象,研究铁炭微电解法、Fenton试剂氧化法和混凝法的原理、特点及影响因素,在一系列静态试验的基础上,运用正交试验确定各影响因素的重要程度,进一步通过单因素影响试验,确定最佳运行参数。在两种工艺均可达到排放要求的情况下,对运行成本进行初步分析,确定微电解-PAC混凝工艺更加经济可行。抗生素制药废水深度处理微电解试验表明:曝气条件下,反应温度为30℃,进水pH值保持不变（pH值为8）,铁炭质量比3:1,反应时间4h,COD去除率达到36%³7%;微电解-Fenton联合试验表明:3%的H₂O₂投加量为6.0mL/L、反应时间60min、pH值为5时,COD值可降到100mg/L以下;微电解-混凝联合试验表明:混凝剂选择FeCl₃和PAC,投加量分别为800 mg/L和600 mg/L时,出水COD值可降到100mg/L以下。通过运行成本分析可以得出,微电解-Fenton工艺,微电解-FeCl₃试剂混凝工艺和微电解-PAC混凝工艺的吨废水处理运行成本分别为1.77元,3.99元和1.32元。更多还原

【Abstract】 Pharmaceutical wastewater containing antibiotic is a typical kind of biorefractory wastewater with high concentration, high chroma, complicated component and low degradability. Even the secondary effluent contains part of chroma and hard degradable organic pollutant, which is the main composition of COD. The wastewater would hardly pollute the accepted water and have a bad influence on people’s normal life without being treated well. How to treat pharmaceutical wastewater containing antibiotic effectively is a big problem for the pharmaceutical industry.Both the process of Micro-electrolysis-Fenton reagent oxidation and the Micro-electrolysis-Coagulating process are characteristic of low investment, low running cost, small occupation of land and simple operating process. In the process the iron is scrap iron or sheet iron from machine factory and activated carbon can be replace by coke and flue powder, so the significance of this process is making use of waste circularly.In this thesis, the object is the secondary effluent from a pharmaceutical wastewater treatment plant. The principle, characteristic and effect factors of the Micro-electrolysis, Fenton reagent oxidation and Coagulating process is studied. Based on a series of static experiments, the degree of importance of influence factors is determined by orthogonal experiments and the optimal operating parameters are determined by single factor experiment. Although both of the processes can achieve the effluent standard, the process of Micro-electrolysis-PAC Coagulating is determined by comparing the running cost.The experiment result of advanced treatment of pharmaceutical wastewater indicates that the optimal operating parameters are as follows:Micro-electrolysis: In the aerated condition, temperature is 30℃,pH value is 8, mass ratio of iron versus carbon is 3, and the COD removal efficiency is 36³7%.（1） Micro-electrolysis-Fenton reagent oxidation process: pH value is 5, reaction time is 60min, the dosage of hydrogen peroxide （3%） is 6mL/L, and the COD can be lower than 100mg/L.（2） Micro-electrolysis-Coagulating process: choose FeCl₃ and PAC as coagulant, the dosage of FeCl₃ and PAC is 800 mg/L and 600 mg/L separately, and the COD can be lower than 100mg/L.（3） Analysis of running cost: The running cost of Micro-electrolysis-Fenton, Micro-electrolysis-FeCl₃ Coagulation and Micro-electrolysis-PAC Coagulation is 1.77yuan/t, 3.99yuan/t and 1.32yuan/t.更多还原