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根据焦化废水的水质特点,选择采用A^2/O法和催化湿式氧化法处理焦化废水。通过两种不同工艺处理同源焦化废水的技术比较和经济分析,得出催化湿式氧化法是一种可行的焦化废水处理技术。 相似文献
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《煤炭加工与综合利用》2016,(2)
叙述了臭氧氧化技术在焦化废水深度处理中的应用和进展,介绍了臭氧氧化技术处理污染物的反应机理,比较了不同焦化废水深度处理技术优缺点,阐述了臭氧氧化技术在焦化废水深度处理中具有COD去除率高、脱色效果明显、操作简单和运行成本低的优势,并提出臭氧氧化技术联合其他废水处理技术对提高焦化废水处理效率的研究成果和工程实际应用状况,展望了臭氧氧化技术在焦化废水深度处理中的发展方向。 相似文献
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缺氧-好氧-接触氧化法处理焦化废水 总被引:3,自引:0,他引:3
介绍了缺氧-好氧-接触氧化法处理难降解焦化废水的工艺原理、污泥的培养驯化及试运行效果。实践证明,该方法是处理高浓度焦化废水的新工艺、新方法,经处理的污水排放基本达到国家规定的标准。 相似文献
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二氧化氯催化氧化-混凝-好氧曝气处理含酚焦化废水 总被引:3,自引:0,他引:3
根据焦化废水的水质特点,采用二氧化氯催化氧化-混凝-好氧曝气工艺对焦化废水进行中试处理,得到了一些基本的运行参数.实验结果表明,二氧化氯催化氧化将焦化废水COD值从5000 mg·L-1降至3000 mg·L-1,加入聚丙烯酰胺(PAM)混凝处理后的出水COD值为1200 mg·L-1,后期采用生化法处理,停留时间控制在48 h,最终使出水达到120 mg·L-1.采用上述联合工艺对焦化废水进行处理完全可以达到GB 13456-92 国家排放标准中COD值150 mg·L-1的二级排放标准. 相似文献
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焦化废水处理技术研究开发最新进展 总被引:9,自引:0,他引:9
分析了活性污泥法、吸附法、混凝沉淀法、生物脱氮等焦化废水处理技术的发展历程,介绍了催化湿式氧化法、光催化氧化法、臭氧深度氧化等焦化废水处理新工艺、新技术研发的最新动态。PAC-MBR组合工艺、UBF—BAF组合工艺等的开发及实践应用表明,不同工艺的合理组合是处理焦化废水的发展方向之一。 相似文献
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采用次氯酸钠、臭氧及芬顿试剂化学氧化法对焦化废水进行预处理,考察了3种药剂对焦化废水CODCr、氨氮的去除效果及废水可生化性的提高。结果表明,次氯酸钠氧化处理对焦化废水中氨氮的去除率较高,但对废水可生化性的提高不大;臭氧氧化处理对焦化废水中CODCr和氨氮的去除率均较低,但对废水的可生化性提高迅速,反应3 min后废水的可生化性即可由0.068提升到0.281;采用芬顿试剂氧化处理,在较佳条件下,废水的可生化性可达到0.445,但运行成本高。综合考虑,采用臭氧氧化预处理焦化废水更具优势。 相似文献
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Chamaiporn Pinchai Mathias Monnot Sébastien Lefèvre Olivier Boutin Philippe Moulin 《加拿大化工杂志》2020,98(4):969-978
Bio-refractory wastewater treatment is compulsory for a safe discharge into the environment. This paper aims to study the use of membrane processes to concentrate wastewater to be then treated by a hydrothermal process such as wet air oxidation for advanced and intensified wastewater treatment. The work focused on three different synthetic wastewaters of public or industrial interest: pharmaceutical wastewater, grey wastewater, and bilge wastewater. Membrane processes operated at the pilot scale enabled retentions as high as 100% of total organic carbon, more than 99% of turbidity, and 70% of hydrocarbon, respectively. High concentration factors were obtained. Membrane foulings were chemically reversible whatever the type of wastewater or the membrane process. Thanks to membrane filtrations, the volumes to be treated by wet air oxidation were drastically reduced, leading to high energy savings. Membrane retentates were then treated by wet air oxidation (300°C, 15 MPa) and resulted in more than an 83% mineralization rate, regardless of the effluent. The hybrid intensified process presented in this work strongly increased the possibility of discharging into the environment by mixing the process outputs or greatly reducing the discharge volume and ultimately the waste load. 相似文献
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吸附-混凝-高级化学氧化法处理庆大霉素废水的研究 总被引:7,自引:2,他引:5
采用吸附-混凝-高级化学氧化法,对庆大霉素废水进行处理,筛选出最佳的混凝条件及氧化条件。实验发现,采用聚合氯化铝(PAC)和阳离子聚丙烯酰胺(CPAM)复合混凝该废水,在pH为8,PAC与CPAM的用量分别为400mg/L和10mg/L时混凝效果较好。混凝后的废水再用H2O+Fe^2 UV氧化,当pH为3时,采取三次投加方式加入2.4g/LH2O2,紫外灯照射6h,取得了满意的结果,实验结果表明:采用吸附-混凝-高级化学氧化处理庆大霉素废水是一种行之有效的途径。经该方法处理后的庆大霉素废水,其CODCR去除率为99.1%,脱色率达100%,达到了医药行业废水排放标准。且该方法设备简单,易于下一步实现工业放大,是一种有较好开发前景的处理庆大霉素废水工艺。 相似文献
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TiO_2/PbO_2复合膜光催化氧化降解染料废水 总被引:2,自引:0,他引:2
提出了一种TiO2/PbO2复合膜圆形光催化氧化反应器,研究了该反应器对经生化处理后的染料废水进行降解的过程.研究表明:光催化氧化的最佳条件是锌片镀TiO2/PbO2复合膜、pH=8.0、H2O2质量浓度为400 mg/L.并对其他氧化剂对该过程的影响进行了探讨.有机废水通过该反应器进行处理后,其COD降为48.4 mg/L.能使有机污染物全部降解为小分子无机物,废水达到国家一级排放标准. 相似文献
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制浆综合废水是成分复杂、COD含量高、难处理的高浓度废水.AB-卡鲁塞尔氧化沟具有耐冲击负荷能力强、去除率高、电耗低等特点.通过选择适宜的工艺流程和参数,利用AB-卡鲁塞尔氧化沟可以经济有效地处理制浆综合废水. 相似文献
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Treatment of organic-containing wastewater from a semiconductor plant treated by chemical oxidation was experimentally investigated. The wastewater was characterized by strong color, high chemical oxygen demand (COD) and low biodegradability. Treatment of this wastewater by traditional activated sludge method was essentially impossible. In the present work, advanced chemical oxidations by Fenton’s reagent and ozonation were utilized to tackle the problems of wastewater color and low biodegradability. To facilitate the particulate removal after Fenton oxidation, chemical coagulation using polyaluminum chloride and polymer was adopted as an integral part of the Fenton process. Experimental tests were conducted to determine the effectiveness and the optimum operating conditions of the chemical oxidation methods. Test results demonstrate that the two advanced oxidations were able to lower the wastewater COD concentration from as high as 15,000 mg/L to below 150 mg/L and completely eliminating the wastewater color, resulting in very good quality of the treated wastewater. A generalized kinetic model was employed to describe and elucidate the oxidation mechanisms of oxidation processes and the kinetic parameters of the models were appropriately identified using the test data. 相似文献
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李振华 《化学工业与工程技术》2010,31(3):14-16
介绍了山梨酸生产废水的水质。采用混凝-汽提-臭氧氧化方法对山梨酸生产废水进行预处理。实验结果表明:经该工艺处理后,山梨酸废水中化学需氧量(COD)的去除率达到了99.3%。该预处理工艺在有效治理废水的同时,实现了资源回收,具有很好的工业应用前景。 相似文献