芬顿法应用于染料工业园区废水深度处理的技术研究与评价

发布时间：2018-01-05 13:28

本文关键词：芬顿法应用于染料工业园区废水深度处理的技术研究与评价　出处：《北京化工大学》2015年硕士论文　论文类型：学位论文

【摘要】：染料废水是典型的“三高一低”废水,即“高COD、高色度,高盐度、低B/C比”。染料工业园区的废水经过物化和生化等多种方法进行处理后仍不能达标排放。近年来,高级氧化法用于废水深度处理受到人们的普遍关注,其中,芬顿法作为高级氧化法的典型代表,更是引起行业内的广泛研究。它的优势体现在氧化能力超强,反应时间非常短,三价铁离子的絮凝沉淀作用等,是深度处理难降解废水的不二选择。本论文针对四个染料工业园区污水处理厂的难降解废水,利用芬顿试剂进行深度处理研究,取得下列研究成果：针对来自河北、浙江、江苏、杭州的染料工业园区污水处理厂的二沉池出水,芬顿实验的结果差别较大。结合单因素实验和正交实验结果来看,河北某染料工业园区的废水COD从94 mg·L-1降至15.6 mg·L-1,去除率达83.46%,符合国家城镇污水排放一级A标准。具体处理条件是初始pH为5,30%过氧化氢为1.41g·L-1,七水合硫酸亚铁为3.46 g·L-1：江苏某园区废水可由原水370 mg·L-1降低到176mg·L-1,去除率52.43%;浙江某园区废水可由原水的321 mg·L-1降低到117 mg·L-1,去除率63.55%；杭州某园区废水经过芬顿法深度处理可由原水的480 mg·L-1降低到101 mg·L-1,去除率78.96%。实验效果存在差异的原因在于废水来源、水质、组分有较大的差别,造成芬顿法处理的废水不能达标。以实验结果、药剂费用、污泥处理费用为指导因子,使用多因子加权评价法对芬顿法进行技术及经济评价,得出结论：河北某园区废水最适合使用芬顿法进行深度处理,浙江某园区次之,而江苏某园区和杭州某园区的废水基本不适合使用芬顿法深度处理。针对污泥的产量问题,实验中选取了河北某染料工业园区废水的芬顿产泥量进行了计算,结果得出实际的产泥量在理论产泥量的大约2-9倍之间。处理效果最佳的情况下实际产泥量约为理论产泥的3倍。综合实验结果、经济性和污泥产量考虑,芬顿法用于染料工业园区废水的深度处理效果是明显的,充分利用了芬顿试剂的强氧化性和铁离子的絮凝沉淀作用,然而还是不能全部达标排放,且污泥产量较高,总费用较高。突破该方法的经济性瓶颈,需从其反应机理入手,进行深入研究。
[Abstract]:Dye wastewater is a typical "three high and one low" wastewater, namely "high COD, high chroma, high salinity, low B/C ratio wastewater. Dye industrial park by physicochemical and biochemical methods after treatment can not discharge. In recent years, advanced oxidation process for wastewater treatment has received widespread attention, people among them, Fenton as a typical representative of advanced oxidation process, is widely studied in the industry. Its advantage is reflected in the oxidation of super capacity, the reaction time is very short, ferric ion flocculation, is non degradable wastewater deep treatment of choice. This thesis focuses on the four dye industrial park sewage treatment plant wastewater, the depth of processing using the Fenton reagent, made the following research results: according to Zhejiang, from Hebei, Jiangsu, Hangzhou dye industrial park sewage treatment plant effluent two, Fenton's results are quite different. Combined with single factor experiment and the orthogonal experiment results, a dye waste water COD Hebei Industrial Park from 94 mg L-1 to 15.6 Mg - L-1, the removal rate reached 83.46%, with a grade A emission standard for urban sewage treatment is the initial condition specific countries. PH 5,30% 1.41g L-1 for hydrogen peroxide seven, vitriol is 3.46 G - L-1: a Jiangsu park wastewater can be decreased from 370 mg to 176mg L-1 water L-1, the removal rate of 52.43%; a Zhejiang park wastewater by water 321 mg L-1 reduced to 117 Mg - L-1, the removal rate of 63.55%; a Hangzhou water park after Fenton depth treatment by raw water of 480 mg - L-1 reduced to 101 Mg - L-1, the removal rate of 78.96%. water quality experimental effect differences is the source of wastewater, and components are different, resulting in Fenton treatment of wastewater can not be reached. With the experimental results, agent fees With the cost of sludge treatment, as the guiding factor, using multi factor weighted evaluation method of Fenton method for technical and economic evaluation, draw the conclusion: Hebei park wastewater is most suitable for use Fenton method for depth processing, a Zhejiang times Park, and the wastewater in a Jiangsu Park and Hangzhou park is not suitable for a basic depth processing using Fenton method aiming at the problem of sludge yield. In the experiment, selected Fenton sludge production of dye wastewater in a Hebei Industrial Park was calculated, sludge production results in about 2-9 times between the actual theory of sludge production. The good treatment effect under the condition of the actual amount of sludge production is about 3 times the theory of sludge production. According to the experimental results, the economy and sludge yield, Fenton method for advanced treatment of wastewater from Dyestuff Industry Park effect is obvious, make full use of the strong oxidation flocculation of Fenton reagent and iron ion precipitation However, it is still not able to meet all the standard emissions, and the output of sludge is higher and the total cost is higher. Breaking through the economic bottleneck of this method, we need to start with its reaction mechanism and make further research.

【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X788

【参考文献】