污泥制备吸附剂处理采油污水实验研究

发布时间：2018-01-06 09:11

本文关键词：污泥制备吸附剂处理采油污水实验研究　出处：《辽宁工程技术大学》2015年硕士论文　论文类型：学位论文

【摘要】：污泥是污水处理过程中不可避免的产物。生产废水处理过程中产生大量污泥,成分复杂、处理困难,简单的填埋和焚烧不仅处理成本高,容易造成二次污染,且浪费了巨大的资源。利用污泥制备吸附剂,在资源合理利用的基础上实现污泥有效处理,且有效降低处理成本。实验采用辽河油田某采油厂污水处理厂除油罐沉降的初沉污泥为原料制备对水中油类污染物质具有吸附性能的污泥吸附剂,并应用于该污水厂的采油污水处理。实验采用化学活化法,通过实验确定效果最好的活化剂为ZnCl_2。正交试验确定了ZnCl_2溶液为活化剂时,各制备条件对吸附剂吸附油类污染物质的效果影响的顺序为：活化剂溶液浓度固液比活化时间活化温度,又通过单因素实验探讨了各项制备条件对吸附剂处理效果的影响。考虑制备成本以及制备条件变化对水中油类污染物吸附去除效果的影响程度,最终确定了ZnCl_2为活化剂制备污泥吸附剂的最优条件为活化剂溶液浓度5.Omol/L,固液比1：1.5,活化温度450℃,活化时间2.0h,对水中油类物质去除率达94.61%。实验采用ASAP2020物理吸附仪对制得的污泥吸附剂进行比表面积和孔隙分析,最优条件制得的吸附剂的BET比表面积为316.0882m~2/g,。且通过对比表面积及孔隙分布情况的分析,发现该样品的比表面积分布在孔径在10-50A的比表面积相对较大,其吸附滞后曲线的线型接近B型,分析可知该吸附剂的孔隙结构近似为具有平板结构的夹缝孔,可见该孔隙结构对水中油类污染物质有较好的去除效果。
[Abstract]:Sludge is the inevitable product of the sewage treatment process. Produce large amounts of sludge, wastewater treatment process of complex components, processing difficulties, simple landfill and incineration treatment not only high cost, easy to cause two pollution, and a huge waste of resources. The prepared sorbent utilization of sludge, realize effective sludge treatment based on rational utilization resources, and reduce the processing cost. The sewage treatment plant of Liaohe oilfield oil production plant in addition to tank settlement of primary sludge was prepared on adsorption performance of oil in water pollution of sludge adsorbent and its application in oil production sewage treatment sewage treatment plant. The experiment using chemical activation method, to determine the best effect the activator is ZnCl_2. orthogonal test to determine the ZnCl_2 solution as the activating agent through the experiment, the effect of preparation conditions on the adsorption effect of the order of the oil pollutants As the activator concentration solid-liquid ratio, activation temperature and activation time, were studied through single factor experiment of the preparation conditions on the treatment effect of adsorbent. Considering the cost of preparation and preparation conditions on the adsorption of contaminants in water influence removal efficiency, and ultimately determine the optimal condition for preparation of ZnCl_2 sludge adsorbent agent for the activation of activator concentration 5.Omol/L, solid-liquid ratio 1:1.5, activation temperature of 450 DEG C, the activation time of 2.0h, the oil removal rate of 94.61%. substances in water using ASAP2020 physisorption apparatus to prepared sludge adsorbent for specific surface area and pore analysis, the optimal conditions of the prepared adsorbent than BET the surface area is 316.0882m~2/g. And through comparative analysis of surface area and pore size distribution, the specific surface area of the sample distribution in the aperture in the specific surface area of 10-50A is relatively large, the adsorption The linear form of the hysteresis curve is close to the B type. The pore structure of the adsorbent is similar to the slit hole with a flat structure, which shows that the pore structure has a good removal effect on the oil pollutants in the water.

【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X741

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