垃圾填埋场渗滤液的蒸发处理工艺

垃圾填埋场渗滤液是一种难于处理的废水。本文首先对垃圾渗滤液处理工艺所存在的问题进行分析，指出蒸发处理垃圾渗滤液是一类有发展前景的工艺，然后综述了垃圾填埋场渗滤液的蒸发处理工艺。     

垃圾填埋场渗滤液的蒸发处理工艺

垃圾填埋场渗滤液是一种难于处理的废水。本文首先对垃圾渗滤液处理工艺所存在的问题进行分析 ,指出蒸发处理垃圾渗滤液是一类有发展前景的工艺 ,然后综述了垃圾填埋场渗滤液的蒸发处理工艺     

生活垃圾填埋场渗滤液处理技术研究

根据处理工艺原理的不同，分别介绍生化和物化处理技术、膜处理技术、土地处理技术和蒸发处理技术等处理工艺研究与应用的进展情况，同时根据我国填埋场渗滤液的产生特点和处理处置现状，展望了我国渗滤液处理工艺的发展趋势。     

实际生活垃圾填埋场渗滤液中多环芳烃的污染特征

分析了某生活垃圾填埋场渗滤液中16种优先控制多环芳烃(PAHs)的浓度水平和季节分布特征,考察了基于膜生物反应器联合纳滤(MBR/NF)的渗滤液处理工艺对PAHs的去除效果,同时探讨了该填埋场对周围水体环境的影响.结果表明,PAHs在填埋场渗滤液中的总质量浓度为13.0～45.8μg/L;MBR/NF处理工艺对渗滤液中...     

城市垃圾填埋场渗滤液特性及其处理

垃圾填埋场渗滤液处理工艺为四类。简述了四类处理工艺的机理、处理效果、优缺点及其应用，展望发展趋势。     

生活垃圾填埋场渗滤液处理技术研究

根据处理工艺原理的不同 ,分别介绍生化和物化处理技术、膜处理技术、土地处理技术和蒸发处理技术等处理工艺研究与应用的进展情况 ,同时根据我国填埋场渗滤液的产生特点和处理处置现状 ,展望了我国渗滤液处理工艺的发展趋势。     

生活垃圾渗滤液处理工艺探讨

分析了国内生活垃圾（以下简称垃圾）渗滤液的特点,探讨了一种比较科学的垃圾渗滤液处理工艺：沉淀-厌氧处理-MBR-纳滤处理,并且分析了各段工艺的原理、特点以及其作用。     

渗滤液中污染物的粒度分布及其应用

渗滤液是一种难于处理的废水.论述了渗滤液中污染物的粒度分布.指出了不同粒度污染物中胶体态组分富含难降解有机物和重金属,其性质稳定,含量较高,对渗滤液的处理工艺选择和去除效果影响重大.最后对渗滤液的资源化进行了初步探讨.     

渗滤液中污染物的粒度分布及其应用

渗滤液是一种难于处理的废水.论述了渗滤液中污染物的粒度分布.指出了不同粒度污染物中胶体态组分富含难降解有机物和重金属,其性质稳定,含量较高,对渗滤液的处理工艺选择和去除效果影响重大.最后对渗滤液的资源化进行了初步探讨.     

垃圾渗滤液处理工艺中有机污染物的三维荧光光谱

利用荧光发射和三维荧光光谱研究了三峡库区某垃圾堆场的渗滤液及其处理工艺出水溶解性有机质(DOM)的荧光光谱特性。堆场渗滤液的DOM含有类酪氨酸、色氨酸及紫外区类富里酸，特征荧光峰中心位于E_x/E_m=275 nm/305 nm，为高激发波长类酪氨酸，与前人的研究结果并不一致，这可能与垃圾的堆放期有关。渗滤液和各处理工艺出水的荧光指数f_450/500均大于1.9，表明腐殖质主要为微生物源。渗滤液在处理前后荧光峰特征和强度均发生明显改变，类蛋白荧光强度与DOC值变化趋势基本一致。生化处理工艺中，类蛋白荧光强度降低了66.4%～95.5%，紫外区类富里酸荧光强度只降低了28.8%，显示类蛋白质具有良好的可生化性，而类富里酸相对较难生化降解。三维荧光光谱能反映渗滤液处理过程中污染物的种类、性质和数量等变化信息，能快速地进行定性分析、定量评价。     

Comparison of aerobic and anaerobic biotreatment of municipal solid waste

To increase the operating lifetime of landfills and to lower leachate treatment costs, an increasing number of municipal solid waste (MSW) landfills are being managed as either aerobic or anaerobic bioreactors. Landfill gas composition, respiration rates, and subsidence were measured for 400 days in 200-L tanks filled with fresh waste materials to compare the relative effectiveness of the two treatments. Tanks were prepared to provide the following conditions: (1) air injection and leachate recirculation (aerobic), (2) leachate recirculation (anaerobic), and (3) no treatment (anaerobic). Respiration tests on the aerobic wet tank showed a steady decrease in oxygen consumption rates from 1.3 mol/day at 20 days to 0.1 mol/day at 400 days. Aerobic wet tanks produced, on average, 6 mol of carbon dioxide (CO2)/kg of MSW as compared with anaerobic wet tanks, which produced 2.2 mol methane/kg of MSW and 2.0 mol CO2/kg methane. Over the test period, the aerobic tanks settled on average 35%, anaerobic tanks settled 21.7%, and the no-treatment tank settled 7.5%, equivalent to overall mass loss in the corresponding reactors. Aerobic tanks reduced stabilization time and produced negligible odor compared with anaerobic tanks, possibly because of the 2 orders of magnitude lower leachate ammonia levels in the aerobic tank. Both treatment regimes provide the opportunity for disposal and remediation of liquid waste.     

Comparison of Aerobic and Anaerobic Biotreatment of Municipal Solid Waste

Abstract

To increase the operating lifetime of landfills and to lower leachate treatment costs, an increasing number of municipal solid waste (MSW) landfills are being managed as either aerobic or anaerobic bioreactors. Landfill gas composition, respiration rates, and subsidence were measured for 400 days in 200-L tanks filled with fresh waste materials to compare the relative effectiveness of the two treatments. Tanks were prepared to provide the following conditions: (1) air injection and leachate recirculation (aerobic), (2) leachate recirculation (anaerobic), and (3) no treatment (anaerobic). Respiration tests on the aerobic wet tank showed a steady decrease in oxygen consumption rates from 1.3 mol/day at 20 days to 0.1 mol/day at 400 days. Aerobic wet tanks produced, on average, 6 mol of carbon dioxide (CO₂)/kg of MSW as compared with anaerobic wet tanks, which produced 2.2 mol methane/kg of MSW and 2.0 mol CO₂/kg methane. Over the test period, the aerobic tanks settled on average 35%, anaerobic tanks settled 21.7%, and the no-treatment tank settled 7.5%, equivalent to overall mass loss in the corresponding reactors. Aerobic tanks reduced stabilization time and produced negligible odor compared with anaerobic tanks, possibly because of the 2 orders of magnitude lower leachate ammonia levels in the aerobic tank. Both treatment regimes provide the opportunity for disposal and remediation of liquid waste.     

生物流化床厌氧氨氧化脱氮处理垃圾渗滤液的研究

采用厌氧流化床反应器 (AFB)作为厌氧氨氧化反应器 ,对垃圾渗滤液脱氮进行了研究。以模拟废水完成了反应器的启动 ,然后加入一定比例的垃圾渗滤液 ,对垃圾渗滤液厌氧氨氧化脱氮的影响因素进行了研究 ,取得了较好的脱氮效果。实验表明 ,厌氧氨氧化脱氮对高氨氮浓度的垃圾渗滤液的处理具有较大的潜力。     

渗滤液回流对不同填埋结构甲烷变化规律的影响研究

建立了大型模拟填埋试验装置,研究了渗滤液回流对不同填埋结构甲烷变化规律的影响.每周对填埋气体中甲烷浓度进行监测.结果表明:厌氧填埋中回流操作使甲烷浓度峰值提前了147 d,峰值为59.6%(体积分数,下同);准好氧填埋中回流操作使甲烷浓度峰值提前259 d,峰值为44.7%.回流操作使甲烷产气高峰提前,增加产气量,加快填埋垃圾稳定,减轻渗滤液污染.厌氧填埋中进行回流操作有利于甲烷的回收利用;准好氧填埋结构可有效减少甲烷的排放,减小对环境的危害.稳定期的垃圾填埋体进行回流产生一定的甲烷,但浓度较低,最高仅26.0%,没有利用价值.     

高氨氮对厌氧生物法处理城市垃圾渗沥液的影响

研究了高浓度氨氮对厌氧膜生物法处理城市垃圾渗沥液的影响。结果表明,COD去除率、沼气产量、沼气产率、辅酶F420和最大比产甲烷活性均随氨氮浓度的增加而减小;当氨氮浓度<3600mg/L时,不会对厌氧膜生物反应器的运行产生明显的影响;氨氮对厌氧污泥产甲烷活性的50%抑制浓度为4350mg/L;高浓度氨氮会造成系统VFA浓度增加;当氨氮浓度由4800mg/L降低到2000mg/L后,受重度抑制的厌氧微生物的活性可以在20d里恢复到未受抑制时的活性水平。     

高氨氮对厌氧生物法处理城市垃圾渗沥液的影响

研究了高浓度氨氮对厌氧膜生物法处理城市垃圾渗沥液的影响。结果表明，COD去除率、沼气产量、沼气产率、辅酶F420和最大比产甲烷活性均随氨氮浓度的增加而减小；当氨氮浓度〈3600mg/L时，不会对厌氧膜生物反应器的运行产生明显的影响；氨氮对厌氧污泥产甲烷活性的50％抑制浓度为4350mg／L；高浓度氨氮会造成系统VFA浓度增加；当氨氮浓度由4800mg／L降低到2000mg/L后，受重度抑制的厌氧微生物的活性可以在20d里恢复到未受抑制时的活性水平。     

垃圾填埋场渗滤水的处理技术

综述了垃圾填埋场渗滤水的生物处理、物化处理、土地处理等技术。特别对渗滤水的生物处理进行了较详细的讨论。     

垃圾填埋场渗滤液生物处理技术改造实例分析

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。     

城市生活垃圾填埋场渗滤液生化处理过程中重金属离子问题

我国对城市生活填埋场渗滤液处理技术的研究主要集中在COD与NH4 -N的去除上,对渗滤液中重金属离子的专项研究几乎未见报道.本文首先总结了国内外城市生活垃圾渗滤液中重金属的种类及浓度,在渗滤液中的存在状态,渗滤液中重金属与其他成分(有机物、氨氮)的相互作用关系,辨证分析了重金属在渗滤液生化处理过程中的有益作用和毒性,归纳了重金属在渗滤液生化处理过程中的变化规律,同时总结分析了重金属的去除技术.     

Electrodegradation of landfill leachate in a flow electrochemical reactor

Sanitary landfills are the major method used today for the disposal and management of municipal solid waste. Decomposition of waste and rainfall generate leachate at the bottom of landfills, causing groundwater contamination. In this study, leachate from a municipal landfill site was treated by electrochemical oxidation in a pilot scale flow reactor, using oxide-coated titanium anode. The experiments were conducted under a constant flow rate of 2000 lh(-1) and the effect of current density on chemical oxygen demand, total organic carbon, color and ammonium removal was investigated. At a current density of 116.0 mA cm(-2) and 180 min of processing, the removal rates achieved were 73% for COD, 57% for TOC, 86% for color and 49% for ammonium. The process proved effective in degrading leachate, despite this effluent's usual refractoriness to treatment.