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MBR+NF+RO工艺在垃圾渗滤液处理中的应用 总被引:1,自引:0,他引:1
垃圾渗滤液属高浓度废水、成分复杂,对处理工艺要求较高,传统生化处理难以满足要求。文中介绍了MBR+NF+RO组合工艺在垃圾渗滤液处理中的应用,其处理效果较好。 相似文献
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《Planning》2014,(5)
简述了生活垃圾卫生填埋场渗滤液的来源、特点及选择垃圾渗滤液处理工艺的原则,着重介绍了MBR+NF+RO法组合工艺在柳州市垃圾渗滤液处理的具体应用,运行结果表明,处理后出水满足《生活垃圾填埋场污染控制标准》(GB16889-2008)表二的排放要求。 相似文献
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垃圾转运站产生的渗滤液具有污染物浓度高、水质水量波动大和处理难度大的特点,以某超大型垃圾转运站渗滤液处理工程为例,详细阐述渗滤液水质特点和处理工艺选择原则。渗滤液设计规模450 m3/d,采用“预处理+厌氧系统+两级A/O+内置式超滤+芬顿高级氧化+BAF”组合工艺,工程投资5 850万元,运行费用50.53元/m3,实际运行出水水质稳定达到《生活垃圾填埋场污染控制标准》(GB 16889—2008)表2标准,主要污染物指标COD、BOD5、NH3-N、TN、TP、SS平均去除率分别为99.8%、99.9%、99.2%、98.1%、98.9%、99.8%。该组合工艺具有出水水质稳定、耐冲击负荷能力强、运行成本低等优点,并且没有传统膜法产生浓缩液的问题,实现了渗滤液的全量化处理。 相似文献
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为探索有效的垃圾渗滤液处理工艺,本文对采用生化一物化组合工艺、中试试验采用膜生物反应器一纳滤组合工艺进行对比研究,主要研究成果如下:经生化一物化组合工艺处理后出水能达到生活垃圾渗滤液排放限值的三级标准;膜生物反应器-纳滤组合工艺处理出水稳定,达到生活垃圾渗滤液排放限值的一级标准.膜生物反应器-纳滤组合工艺可用于垃圾填埋场渗滤液的处理,具有一定的指导作用和工程实用价值. 相似文献
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Leachates produced at the La Zoreda landfill in Asturias, Spain, were recirculated through a simulated landfill pilot plant. Prior to recirculation, three loads of different amounts of Municipal Solid Waste (MSW) were added to the plant, forming in this way consecutive layers. When anaerobic digestion was almost completed, the leachates from the landfill were recirculated. After recirculation, a new load of MSW was added and two new recirculations were carried out. The organic load of the three landfill leachates recirculated through the anaerobic pilot plant decreased from initial values of 5108, 3782 and 2560 mg/l to values of between 1500 and 1600 mg/l. Despite achieving reductions in the organic load of the leachate, a residual organic load still remained that was composed of non-biodegradable organic constituents such as humic substances. Similar values of the chemical oxygen demand (COD) were obtained when the landfill leachate was treated by a pressurised anoxic-aerobic process followed by ultrafiltration. After recirculation through the pilot plant, physico-chemical treatment was carried out to reduce the COD of the leachate. The pH of the leachate was decreased to a value of 1.5 to precipitate the humic fraction, obtaining a reduction in COD of about 13.5%. The supernatant liquid was treated with activated carbon and different resins, XAD-8, XAD-4 and IR-120. Activated carbon presented the highest adsorption capacities, obtaining COD values for the treated leachate in the order of 200mg/l. Similar results were obtained when treating with activated carbon, the leachate from the biological treatment plant at the La Zoreda landfill; in this case without decreasing the pH. 相似文献
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Characterization and treatment of recirculation-stabilized leachate 总被引:21,自引:0,他引:21
Evan Diamadopoulos 《Water research》1994,28(12):2439-2445
This work investigated the characterization and treatment of recirculation-stabilized sanitary landfill leachate. Leachate from recently deposited solid wastes was treated by recirculation through areas of the landfill with old wastes. The stabilized effluent forms a pond at the lowest point of the landfill. This stabilized leachate was characterized by an average COD value of 1141 mg/l, an average BOD value of 85 mg/l and a BOD:N:P ratio equal to 100:312:0.30. Heavy metals concentrations were lower than those of fresh leachate. The BOD/COD ratio of this leachate was below 0.1, which excluded the possibility of biological treatment. Physico-chemical methods of treatment employed were coagulation, powdered activated carbon adsorption and air stripping of ammonia. The results showed that even after the combined treatment the COD remaining in water hardly dropped below 300 mg/l. Ammonia stripping was efficient at pH 11.5, yet the kinetics were slow. 相似文献
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针对垃圾渗滤液中成分复杂的污染物,在自然光照条件下,使用TiO2/氧化石墨烯、Cu2O/氧化石墨烯和TiO2/Cu2O三种复合催化剂分别对垃圾渗滤液原液进行催化氧化。结果表明,3种复合催化剂中,TiO2/氧化石墨烯复合催化剂对有机物的去除效果最好,当催化剂与渗滤液COD的质量比为0.7时为该催化剂的最佳投加量,最佳反应时间为2 h。在最佳试验条件下,对垃圾渗滤液原液进行催化氧化后,对COD的去除率达到92.57%,此时渗滤液出水COD为964.79mg/L,出水NH4+-N为2015.84 mg/L,BOD5/COD值达到0.83。 相似文献