应用有效微生物(EM)技术处理垃圾渗滤液的研究

针对垃圾渗滤液常规生化处理无法解决的问题，通过应用有效微生物（EM）技术净化垃圾渗滤液的静态小试和稳定塘中试，研究了EM技术对垃圾渗滤液主要污染指标的降解效果。试验结果表明，EM菌液对毒性大的高浓度垃圾渗滤液处理效果明显，主要指标的去除率达到46%～51%，EM菌液对难生化降解垃圾渗滤液的处理效果显著，主要指标的去除率达到67%～89%，是垃圾渗滤液生化处理的一种新技术、新方法。     

垃圾渗滤液处理技术进展

从垃圾渗滤液的产生及其特点出发,介绍了国内外正在开发和研究的垃圾渗滤液处理技术.针对国内渗滤液处理技术的现状,提出了渗滤液处理技术的发展方向.     

南宁市垃圾渗滤液对地表水的影响分析

为了解垃圾转运站垃圾渗滤液对南宁市地表水质的影响,对南宁市垃圾转运站中垃圾渗滤液进行检测分析。结果显示:垃圾转运站渗滤液中COD、BOD_5、金属含量、粪大肠菌群等各项指标严重超出国家标准。如不经处理即排放,将对南宁市水质造成影响,因此,建议垃圾转运站渗滤液应集中运到填埋场进行处理达标后排放。     

垃圾填埋场渗滤液特性及处理方法

在总结垃圾渗滤液特性以及渗滤液产生量的估算后,较为详细地介绍了垃圾渗滤液最近在国内外常用的一些处理工艺方法,并且针对实际情况,提出了我国垃圾渗滤液处理的建议。     

南宁市垃圾渗滤液对地表水的影响

目的了解垃圾转运站垃圾渗滤液对南宁市地表水质的影响。方法对南宁市2座垃圾转运站中垃圾渗滤液进行检测分析。结果该市垃圾转运站渗滤液中化学需氧量(COD)、生物需氧量(BOD5)、金属含量、粪大肠菌群等各项指标严重超出国家标准。结论不经处理即排放垃圾渗透液,将对南宁市水质造成影响,因此,建议垃圾转运站渗滤液应集中运到填埋场进行处理达标后排放。     

垃圾渗滤液的土壤处理效果研究——农业利用前景的试验研究

土壤处理法是利用土壤——植物系来降解、净化垃圾渗滤液中某些污染物质,但它往往还包含一些有害因素。本文通过盆栽模拟试验,了解不同土壤对垃圾渗滤液的处理效果,分析并讨论了垃圾渗滤液用于农业生产的利与弊。     

管道絮凝法处理垃圾渗滤液研究

本文通过在现场处理的基础上，对武汉市流芳垃圾场渗滤液处理工艺改造中增设的管道絮凝处理设施进行了分析研究，得出管道絮凝法处理垃圾渗滤液的最佳控制指标；并得出利用管道絮凝法处理垃圾渗滤液是切实可行的，该方法对渗滤液的色度、COD、总磷去除率达90％。     

Fenton试剂处理垃圾渗滤液技术进展的研究

介绍了垃圾渗滤液的危害及毒性,比较了用活性碳吸附、FeCl、絮凝、Fenton试剂中H2O2和FeSO4的不同比例处理垃圾渗滤液的工艺流程以及对COD处理效果的影响讨论了pH、温度、反应时间、Fenton试剂不同配比对处理效果的影响,得出用Fenton试剂处理垃圾渗滤液时,可把大分子的有机物氧化为小分子,从而降低了垃圾渗滤液的COD值,对分子量较小的有机物的去除率不高。     

我国城市垃圾渗滤液处理现状与展望

在介绍国内外现有的新型脱氮及深度处理技术的基础上,重点对垃圾渗滤液的脱氮及深度处理技术的应用进行了探讨,并展望了渗滤液脱氮及深度处理的发展方向,指出垃圾渗滤液的处理工艺应注重可持续发展,经济效益,环境效益,社会效益并重。     

一种适合国情的垃圾渗滤液处理新技术

阐述了以矿化垃圾为填料的生物反应床处理垃圾渗滤液的处理效果，同时与其它典型工艺进行了比较．得出矿化垃圾处理渗滤液是一种适合国情的新技术。     

用SBR法处理寒冷地区垃圾场渗滤液

牡丹江市郭家沟垃圾场，垃圾渗滤液通过贮存池、SBR（Sequence Batch Reactor，序批式活性污泥法）反应池、混凝沉淀池等处理工艺，使渗滤液达到国家排放标准，说明SBR法适用于寒冷地区垃圾填埋场的渗滤液处理。     

固废处置过程中的生态屏障系统应用技术研究

在提出"固废处置生态屏障系统"概念、性质和功能的基础上,结合固体废物处理处置工程的具体结构特征,对该系统中固废填埋工程屏障、固废封场屏障及生态恢复、渗沥液厌氧处理屏障等子系统在应用过程中所涉及的技术内容和关键因素进行了分析和探讨。     

城市垃圾填埋场渗滤液循环回灌处理技术

城市垃圾填埋场渗滤液经循环回灌处理后,污染物浓度大大降低,填埋场填埋垃圾的湿度增加,稳定速度加快。适量的表面回灌可有效减少渗滤液水量,降低处理规范。与传统渗滤液处理方法相比,此技术投资省,效果好,操作、管理简单,很有应用价值。     

Field survey of enteric viruses in solid waste landfill leachates.

Because municipal solid waste may contain fecal material from a variety of sources, there is concern that the leachate discharged from some solid waste landfills may contain enteric pathogens, including enteric viruses. In this study, 22 leachate samples from 21 different landfills in the United States and Canada were examined for enteric viruses. The sites represented a broad range of conditions for solid waste landfills and the leachate samples ranged from 10.3 to 18 liters in volume. Enteric viruses were found in only one of the 22 leachate samples examined. Two viruses, identified as poliovirus types 1 and 3, were found in an 11.8 liter sample obtained from a site where solid waste landfill practice was deficient. The low levels of enteric viruses detected in field samples of raw leachate and the opportunities for further reductions in the virus concentration of leachates by such processes as thermal inactivation, removal by soil and dilution in ground and surface waters, suggest that leachates from properly operated solid waste landfills do not constitute an environmental or public health hazard due to enteric viruses.     

固体垃圾和渗沥液中总DNA提取及微生物多样性分析

基于对生活垃圾及其渗沥液提取总DNA方法的评价,采用ARDRA和RISA分析固体垃圾和渗沥液的生物多样性.通过总DNA浓度、纯度、片段分布情况、PCR扩增等指标评价,找出效果较好的提取方法,该法从固体垃圾和渗沥液中均获得了高质量的总DNA,DNA分子片段在23 kb左右,且样品不需经过纯化可以直接进行PCR扩增;ARDRA和RISA分析显示固体垃圾比渗沥液具有更丰富的微生物多样性.     

SBR法处理垃圾渗滤波试验研究

利用ＳＢＲ法对城市生活垃圾卫生填埋场垃圾渗滤液进行处理,渗滤液在ＳＢＲ法处理前进行吹脱处理,以污染物主要指标ＣＯＤ、氨氮作为处理程度指示。经过试验处理后,渗滤液ＣＯＤ值大大降低,其去除率可达 ９０％以上,氨氮的出水值低于国家废水综合排放二级标准。     

利用微生态工程技术处理城市生活垃圾的研究

利用生物菌对垃圾进行处理,是一项生态无害化处理技术。在北京海淀区的垃圾场内,引起日本生产的微生态制剂进行实验,说明这种方法能较好地去除恶臭,减少蚊绳,并净化垃圾场的渗滤液。     

常州市餐厨垃圾应急预处理工程实例分析

常州餐厨垃圾应急处理工程采用自动分选、固液分离、油水分离等工艺处理餐厨垃圾,将固相榨渣填埋、废油脂回收、废水与垃圾渗沥液合并处理,操作简便,管理方便;该工程建设周期短、投资小、运行费用低。     

北京安定垃圾填埋场渗滤液治理工艺改进研究

针对北京市安定垃圾填埋场渗滤液采用回喷法处理的技术缺陷,提出了有效的物理化学处理工艺流程：混凝-氧化-吸附剂吸附作为回喷法的预处理。实验结果表明：COD去除率可达80%以上,色度去除率达90%以上,臭味消失。经过该流程处理后的渗滤液可以回喷处理或用做灌溉、绿化,进一步探索了垃圾填埋场渗滤液回用的可能性。     

Assessment of sanitary landfill leachate characterizations and its impacts on groundwater at Alexandria

The total amount of solid waste generated in Alexandria is 2820 tons/d which increases to 3425 tons/day during summer. In the past, 77% of the collected solid wastes was open dumped. The open dumping sites did not have the minimum requirements for pollution control. Following the exacerbation of the problem, the Alexandria Governorate contracted a company to carry out the solid waste management. The contracted company transferred 75% of the daily generated solid wastes to a new constructed sanitary lanfill. The site receives a daily average of 1910 tons. The landfilling is performed by trench method in the form of cells. The produced leachate is discharged into two lined aerated lagoons. The biogas formed from biodegradation of landfilled solid wastes is burned and the produced heat is used for drying the lagoons leachate. The remaining residues are relandfilled. The study aims at assessment of the solid waste sanitary landfill leachate characterization and its impacts on the groundwater. The analysis of the collected data confirms that leachates from the landfill are severely contaminated with organics, salts, and heavy metals. The fluctuations in concentration levels of the different parameters were attributed to aging and thickness of waste layers, stage of decomposition, and re-landfilling of the concentrated residues from the drying lagoons. The concentrations of NH4-N (600 mg/l) indicated that the process of stabilization was still in the initial stages and attributed to the compaction process. The high BOD5 results (28,833 mg/l) indicated that the process of stabilization was in the initial stages which were very slow. The high COD results (45,240 mg/l) can be attributed to the compaction of the wastes which also retards the degradation of the solid wastes. The BOD and COD values indicated clearly severe contamination. The BOD5/COD ratio measured in the current study (0.64) indicated that the leachate of the present study was biodegradable and unstabilized, and required time and favourable conditions for anaerobic biodegradation. Heavy metals were lower compared with what have been observed in other countries. Re-landfilling of the residue after drying the leachate in lagoons and the short time of biodegradation in the landfill site were factors which effected the high strength of most of the parameters concentrations of the leachate. Assessment of groundwater contamination through piezometer wells around the active cells indicated that there was no contamination from the leachate to the groundwater surrounding the site. The study recommended emphasizing the importance of adjusting the biodegradation factors, the monitoring program, the prohibition of disposing heavy metals, determination of the leachate generation rate, and treatment of leachate.