导　　师： 李泽琴

学科专业： H3001

授予学位： 硕士

作　　者： ;

机构地区： 成都理工大学

摘　　要： 苯胺基乙腈化工废水含有多种难降解，水溶性强的物质，如氰化物，苯胺等。本文主要对此类废水中的氰化物以及其他一些物质的处理工艺做了一些试验性研究,旨在寻求一种合理的处理工艺，能够有效的降低其中氰化物以及相关物质的浓度。减轻其中的污染物所带来的环境负担，以期为同类或者类似废水的处理提供可借鉴性的帮助。并针对其有机物浓度高，污染物难降解的特点采取了物化处理法和生物处理法相结合的方法对废水进行处理。
　　 首先在预处理试验中，采用了混凝沉淀法对废水中的SS和CODCR进行处理，筛选了最佳混凝剂，确定了最佳混凝条件(PH值，投加量等)。在最佳混凝条件下，废水中的CODCR下降了15.2％，SS下降了71.1％，为后续的微生物处理大大减轻了负担。
　　 其次，在降低氨氮的试验部分中，通过碱解法和化学沉淀法降低氨氮的浓度，达到了较为理想的去除效果。首先在碱解法中，找到了最佳反应条件，即将水温控制在30℃到35℃之间，且调节反应体系的PH值在11到12左右，反应进行两天左右，氨氮即可达到最佳去除效果，氨氮的去除率达到61％，而在化学沉淀法去除氨氮的过程当中，笔者发现将反应时间控制在一个小时之内，在常温下进行反应，反应体系的PH值为控制在9到9.5之间，且MGO和H3PO4
　　 预处理试验阶段完成后，在进行氰化物处理试验研究中，选取二氧化氯作为最佳氧化剂，通过氧化反应，控制体系反应温度在65-70C°，且把PH值调节至11左右，氰化物的浓度由原废水的1000MG/L降低到了100.4MG/L。去除率达到了89.8％。的投加量比控制在1:2.6时为最佳反应条件,氨氮去除率达到90.2％，氨氮浓度水平大大降低，达到了可进行微生物处理的范围内。
　　 最后，在微生物处理过程中，通过采用活性� N-phenylacetonitrile chemical wastewater containing a variety of unbiodegradable, and water-soluble material,Such as Cyanide, aniline. In this article, the author did some pilot study of treating cyanide and other materials in this wastewater,and seek a reasonable treatment process, in order to provide some help which can be used to treating similar wastewater. For its characteristics of high concentration of organic and unbiodegradable, the physico-chemical treatment and biological treatment method are combined using by the author for wastewater treatment. First of all,in the experiments of pretreatment,several coagulating agents are compared and then the best one was selected.At the same time,the coagulating conditions in the lab were optimized as well.under the best conditions,the content of COD of the wastewater decreased about 15.2/%,SS decreased about 71.1/%, reduced the burden of follow-up treatment.Secondly,using Alkaline hydrolysis solution and chemical precipitation to decrease NH3-N to achieve better results.We find the best reaction conditions by using Alkaline hydrolysis solution. Control the temperature between 30℃to 35℃, and adjust pH value between 11 to 12, react two days or so, NH3-N removal rate reached 61/%. Using the chemical precipitation method, we found that when control the reaction time within an hour and adjust pH value between 9 to 9.5,and the amount of MgO is 2.6 times to H3PO4, we can achieve the optimal reaction conditions,and NH3-N removal rate reached 90.2/%,then NH3-N can be disposed by microorganism.In the experimental studies of cyanide treatment, selecting the chlorine dioxide as oxidant and then by oxidation reactions, control the reaction temperature between 65-70C°and adjust pH value to11, cyanide concentration in the wastewater can be reduced from 990mg // L to 100.4mg // L. Finally, in the biological treatment process, using activated sludge dispose those residual cyanide and NH3-N, and add to the dominant bacteria into the activated sludge/(1008# bacteria/),and

关 键 词： 印染废水处理 氰化物 物化处理法 生物处理法 混凝沉淀法 活性污泥法

领　　域： [环境科学与工程] [环境科学与工程]