共查询到20条相似文献,搜索用时 24 毫秒
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微电解工艺在染料废水治理中的应用 总被引:26,自引:0,他引:26
染料工业废水采用微电解工艺治理能有效地去除废水色度及降低COD,提高废水的可生化性。简要分析微电解工艺的机理,并介绍该工艺治理染料废水的工艺流程。 相似文献
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A recombinant human androgen receptor yeast assay was applied to investigate the occurrence of antiandrogens as well as the mechanism for their removal during gray wastewater and coking wastewater treatment. The membrane reactor (MBR) system for gray wastewater treatment could remove 88.0% of antiandrogenic activity exerted by weakly polar extracts and 97.3% of that by moderately strong polar extracts, but only 32.5% of that contributed by strong polar extracts. Biodegradation by microorganisms in the MBR contributed to 95.9% of the total removal. After the treatment, the concentration of antiandrogenic activity in the effluent was still 1.05 μg flutamide equivalence (FEQ)/L, 36.2% of which was due to strong polar extracts. In the anaerobic reactor, anoxic reactor, and membrane reactor system for coking wastewater treatment, the antiandrogenic activity of raw coking wastewater was 78.6 mg FEQ/L, and the effluent of the treatment system had only 0.34 mg FEQ/L. The antiandrogenic activity mainly existed in the medium strong polar and strong polar extracts. Biodegradation by microorganisms contributed to at least 89.2% of the total antiandrogenic activity removal in the system. Biodegradation was the main removal mechanism of antiandrogenic activity in both the wastewater treatment systems. 相似文献
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Micro-electrolysis technology for industrial wastewater treatment 总被引:15,自引:0,他引:15
Experiments were conducted to study the role of micro-electrolysis in removing chromaticity and COD and improving the biodegradability of wastewater from pharmaceutical.dye-printing and papermaking plants.Results showed that the use of micro-electrolysis technology could remove more than 90% of chromaticity and more than 50% of COD and greatly improved the biodegradability of pharmaceutical wastewater.Lower initial pH could be advantageous to the removal of chromaticity. A retention time of 30 minutes was recommended for the process design of micro-electrolysis.For the use of micro-electrolysis in treatment of dye-printing wastewater,the removal rates of both chromaticity and COD were increased from neutral condition to acid condition for disperse blue wastewater;more than 90% of chromaticity and more than 50% of COD could be removed in neutral condition for vital red wastewater. 相似文献
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针对现阶段高浓度有机废水处理困难的问题,提出了一种基于浸没燃烧技术的处理方法,设计制作了1台浸没燃烧装置,并开展了高浓度有机废水浸没燃烧实验研究,探究了过量空气系数、二次风量、燃烧温度等参数对燃烧尾气中CO、NOx排放的影响,以及浸没深度、燃烧温度对高浓度有机废水COD去除的影响。实验结果表明:该工艺对高浓度有机废水中的有机物去除效果明显,温度在900℃以上,浸没深度达到20 cm时,COD去除率可达90%以上。该方法可作为废水处理设备,与生物法等处理技术联用,应用前景广阔。 相似文献
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混凝法处理有机氯农药废水的研究 总被引:7,自引:1,他引:7
以有机氯农药废水为研究对象 ,研究了无机混凝剂PAC及其与有机高分子混凝剂PAM (J 3450 ,J 1 1 50 )复合使用的混凝处理特性。通过正交实验确定了混凝反应各种影响因子的最佳操作条件。在此条件下 ,水质 1、2的COD去除率分别为 38%、40 .6 % ;色度去除率分别为 98% ,2 0 %。混凝处理后 2种水质的B/C值也得到了提高。在各影响因子与COD去除率的关系曲线基础上 ,分析了废水中各影响因子的作用机理。 相似文献
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采用超临界水氧化(supercritical water oxidation,SCWO)技术对TNT-RDX混合炸药废水进行氧化处理,研究了反应温度、压力、停留时间、过氧量等因素对降解效果的影响。结果表明:采用超临界水氧化技术能够迅速将TNT-RDX废水中的有机物彻底分解为无害的CO2和N2,随反应温度的升高、压力的增大、反应时间的延长,COD去除率也随之提高。过氧量对废水有机物氧化的COD去除率的影响依赖于反应的进程。当反应温度超过550℃,反应时间>120 s时,TNT-RDX废水的COD去除率>99%,完全达到了国家火炸药水污染物排放标准的要求。 相似文献
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焦化废水生物脱氮工艺反硝化段菌相分析 总被引:5,自引:0,他引:5
对焦化废水反硝化段的试样进行了细菌数量及菌相分析研究,对反硝化细菌在反硝化段生态环境中的分布进行了探讨。试验共分离出23株菌株,分别属于7个属,其中假单胞菌和芽孢杆菌为主要优势菌,分别占总鉴定菌数的39.1%和21.7%,反硝化细菌共有11株,占总鉴定菌数47.8%。 相似文献
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本钢焦化废水处理工艺清洁生产技术研究 总被引:2,自引:0,他引:2
通过对本溪钢铁公司 (以后简称本钢 )焦化废水生物脱酚实用技术的研究 ,分析了工艺中存在的工业水浪费等问题 ,提出了运用清洁生产手段提高去除效率 ,降低运行成本的一些方法 ,并给出焦化废水处理清洁生产工艺流程。 相似文献
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采用Fenton试剂絮凝氧化法预处理皂素废水,考察了H2O2投加量、FeSO4·7H2O投加量、pH值和搅拌时间4个因素,研究其对废水中COD去除效果的影响,实验结果表明反应的最佳条件为:pH为4,H2O2投加量为18mL/L,FeSO4·7H2O投加量为7g/L,搅拌时间为45min,对COD的去除率可达到42.60%。 相似文献
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Colour and organic removal of biologically treated coffee curing wastewater by electrochemical oxidation method 总被引:3,自引:0,他引:3
IntroductionCoffeegreenbeansCleaningandwashingWashingeffluentRoastingandgrindingRoastandgroundcoffeeChicorycubesCoffee chicorymixtureExtractionScrewpressliquorCentrifugationSludgeblowdownConcentrationCondensateSpraydryingandpackingFig .1 Schematicsofco… 相似文献