共查询到18条相似文献,搜索用时 546 毫秒
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物理化学法处理垃圾填埋场渗滤液的研究进展 总被引:9,自引:0,他引:9
本文介绍了渗滤液的特性,指出物理化学法是渗滤液处理过程中不可缺少的环节。总结了物理化学法处理渗滤液的进展状况,并提出了物理化学法处理渗滤液存在的问题及未来发展趋势。 相似文献
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综述了垃圾填埋场渗滤液的物理化学、生物、土地处理等技术。对某地已投入使用的垃圾填埋场渗滤液的生物处理设施技术改造进行了较详细的分析探讨。 相似文献
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蔡芹 《环境污染治理技术与设备》2003,4(12):76-78
综述了垃圾填埋场渗滤液的物理化学、生物、土地处理等技术。对某地已投入使用的垃圾填埋场渗滤液的生物处理设施技术改造进行了较详细的分析探讨。 相似文献
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介绍了化学酸性絮凝 催化氧化 中和沉淀综合物理化学技术,改性预处理晚期垃圾渗滤液(BOD/COD≤0.18)实验研究,给出了结果。最终,晚期垃圾渗滤液经综合物理化学技术改性预处理后,BOD/COD显著提高,由难生化(BOD/COD≤0.18)变为较易生化(BOD/COD达0.31),为其进一步生化达标处理(一级标准)创造了条件。 相似文献
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垃圾填埋场渗滤液处理工艺研究进展 总被引:1,自引:0,他引:1
介绍了垃圾渗滤液的来源和特点,结合近些年的工程实际和实验研究,主要综述了垃圾渗滤液的处理方案和技术,包括回灌法、土地处理法、物化法、生物法以及其他处理方法,在比较这些方法的基础上提出了一些建议。 相似文献
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用光催化氧化法处理垃圾渗滤液的实验研究 总被引:13,自引:1,他引:13
以城市生活垃圾渗滤液作为研究对象,采用悬浮态半导体催化剂对渗滤液进行处理试验。研究了ZnO/Tio2复合半导体催化剂的催化活性,并研究了各种实验条件、影响因素及处理效果。研究表明,在一定的试验条件下,用ZnO/TiO2复合半导体催化剂处理城市垃圾渗滤液效果较好,可作为垃圾渗滤液的深度处理。同时得到光催化氧化法处理渗滤液的最佳试验参数。 相似文献
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《环境污染与防治》2015,(7)
对比研究了UV/Fenton法、UV/H2O2法和Fenton法对垃圾渗滤液的处理特性。结果表明,3种高级氧化技术最佳处理条件为:反应温度25℃、反应时间60min、初始pH 4.0、H2O2初始质量浓度为4 000mg/L,且UV/Fenton法和Fenton法的Fe(Ⅱ)用量均为25 mg/L。在该最佳处理条件下,UV/Fenton法、UV/H2O2法及Fenton法对垃圾渗滤液COD的去除率分别为49.9%、39.8%和38.0%,处理后垃圾渗滤液的可生化性大幅度提高。因此,UV/Fenton法、UV/H2O2法和Fenton法是极具应用前景的垃圾渗滤液预处理技术。 相似文献
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Vera Garaj-Vrhovac Višnja Oreščanin Goran Gajski Marko Gerić Damir Ruk Robert Kollar Sandra Radić Brkanac Petra Cvjetko 《Chemosphere》2013
In this research, toxicological safety of two newly developed methods for the treatment of landfill leachate from the Piškornica (Croatia) sanitary landfill was investigated. Chemical treatment procedure combined chemical precipitation with CaO followed by coagulation with ferric chloride and final adsorption by clinoptilolite. Electrochemical treatment approach included pretreatment with ozone followed by electrooxidation/electrocoagulation and final polishing by microwave irradiation. Cell viability of untreated/treated landfill leachate was examined using fluorescence microscopy. Cytotoxic effect of the original leachate was obtained for both exposure periods (4 and 24 h) while treated samples showed no cytotoxic effect even after prolonged exposure time. The potential DNA damage of the untreated/treated landfill leachate was evaluated by the comet assay and cytokinesis-block micronucleus (CBMN) assay using either human or plant cells. The original leachate exhibited significantly higher comet assay parameters compared to negative control after 24 h exposure. On the contrary, there was no significant difference between negative control and chemically/electrochemically treated leachate for any of the parameters tested. There was also no significant increase in either CBMN assay parameter compared to the negative control following the exposure of the lymphocytes to the chemically or electrochemically treated landfill leachate for both exposure periods while the original sample showed significantly higher number of micronuclei, nucleoplasmic bridges and nuclear buds for both exposure times. Results suggest that both methods are suitable for the treatment of such complex waste effluent due to high removal efficiency of all measured parameters and toxicological safety of the treated effluent. 相似文献
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M. El-Fadel J. Hashisho 《Journal of the Air & Waste Management Association (1995)》2014,64(9):1073-1084
The management of landfill leachate is challenging, with relatively limited work targeting high-strength leachate. In this study, the performance of the membrane bioreactor (MBR) and sequencing batch reactor (SBR) technologies are compared in treating high-strength landfill leachate. The MBR exhibited a superior performance with removal efficiencies exceeding 95% for BOD5, TN, and NH3 and an improvement on SBR efficiencies ranging between 21 and 34%. The coupled experimental results contribute in filling a gap toward improving the management of high-strength landfill leachate and providing comparative guidelines or selection criteria and limitations for MBR and SBR applications.
ImplicationsWhile the sequencing batch reactor (SBR) technology offers some flexibility in terms of cycle time and sequence, its performance is constrained when considering landfill leachate associated with significant variations in quality and quantity. Combining membrane separation and biodegradation processes or the membrane bioreactor (MBR) technology improved removal efficiencies significantly. In the context of leachate management using the MBR technology, more efforts have targeted low-strength leachate with limited attempts at moderate to high strength leachate. In this study, the SBR and MBR technologies were tested under different operating conditions to compare and evaluate their feasibility for the management of high-strength leachate from a full-scale operating landfill. Such a comparison has not been reported for high-strength leachate. 相似文献
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二氧化氯深度处理垃圾渗滤液研究 总被引:2,自引:0,他引:2
利用二氧化氯对生物处理后的垃圾渗滤液进行深度处理,根据废水中有效氯浓度、COD、氨氮及细菌数等参数的分析,初步探讨了不同浓度的二氧化氯在不同处理时间内对垃圾渗滤液的处理效果。结果表明,对于COD初始浓度为450 mg/L左右的水样,二氧化氯的投加浓度达100 mg/L(有效氯),反应时间在50 min时,处理水样可达到同类废水的国家二级排放标准;对于同样条件下的水样,当加入约25 mg/L的二氧化氯时可以杀灭水样中的大肠杆菌,加入浓度达到90 mg/L的二氧化氯时,可以杀灭水样中几乎所有的细菌。 相似文献
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粉煤灰的改性及其在垃圾渗滤液深度处理中的应用研究 总被引:3,自引:1,他引:2
实验采用物理方法和化学方法对粉煤灰进行改性,并用改性粉煤灰深度处理垃圾渗滤液。通过扫描电镜和X-射线衍射对改性前后粉煤灰的表面结构和主要晶相组成进行分析,同时考察其在垃圾渗滤液深度处理中的吸附效果。结果表明,改性后粉煤灰的比表面积和孔隙度增大,吸附能力增强。通过比较,吸附能力最强的改性粉煤灰是将引发剂A与粉煤灰以质量比为1∶9的比例混合,在800℃下恒温焙烧2 h所制得的改性粉煤灰,该改性粉煤灰对垃圾渗滤液中COD和色度的去除率可达到67.3%和87.3%,相对于改性前去除率提高了96.0%和57.8%。 相似文献