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通过分析垃圾渗滤液的来源、产生量的影响因素,给出了垃圾渗滤液产生量的计算方法和渗滤液调节池容积的计算方法。并以山西省洪洞县生活垃圾综合处理厂为例,详细介绍了垃圾渗滤液产生量和渗滤液调节池容积的确定方法以及渗滤液调节池结构设计,可供类似工程参考借鉴。 相似文献
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为考察锯末对垃圾渗滤液的减量作用以及在垃圾中添加锯末对其降解速率以及渗滤液中COD和NH3-N浓度的影响,在实验室构建了三个圆柱形垃圾厌氧填埋反应器,用于模拟垃圾填埋场的运行情况,并对垃圾渗滤液的产生量、垃圾层沉降高度、渗滤液中COD和NH3-N的浓度进行了监测。结果表明:锯末具有很强的减少垃圾渗滤液产量和加速垃圾降解的作用,在垃圾层中混合添加锯末能使每升垃圾的渗滤液产生量在180d内减少1200~1300mL,垃圾层高度比不添加锯末时多沉降了5cm;添加锯末后垃圾渗滤液中的COD浓度有所降低;锯末对NH3-N有一定的吸附作用。 相似文献
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垃圾渗滤液处理技术的发展与展望 总被引:3,自引:0,他引:3
介绍了垃圾渗滤液的产生来源和特点,指出垃圾渗滤液是一种非常复杂的、难以生物化处理的污水,是国内外污水处理的一大难题;总结了近年来在垃圾渗滤液的预处理、主体工艺及深度处理技术上的研究进展,并提出了今后研究垃圾渗滤液处理技术的发展方向. 相似文献
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垃圾分类是生态环境保护工作的重要内容,垃圾分类有可能促进渗滤液的减量化。通过对垃圾渗滤液产量的构成及影响因素进行分析,对"垃圾分类""垃圾不分类"情况下,垃圾收运、转运、处理、处置各个环节过程中垃圾渗滤液的产量情况进行了采样分析。研究表明,通过垃圾分类,将厨余垃圾从垃圾收运系统分离,对于渗滤液减量具有重要意义。 相似文献
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垃圾填埋场渗滤液是一种难处理的高浓度有机废水。分析了垃圾渗滤液的来源、特点以及不同熟化阶段垃圾渗滤液中主要组分的变化,对近年来国内外垃圾填埋场的渗滤液的处理方法和处理形式进行了综述,并对其研究进展作了介绍。 相似文献
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陈岩 《建设科技(建设部)》2008,(14):82-84
垃圾填埋是一种广泛应用的垃圾处置方法,而其生产的渗滤液会导致地下水和地表水的二次污染,鞍山羊城耳峪垃圾场采用的A/O-SBR渗滤液处理法在垃圾场运行早期效果不错,经处理后的垃圾渗滤液能够达标排放,但随着国家对垃圾渗滤液出水标准的提高和垃圾场运行年限的增加,此种方法现在已经不适合羊耳峪垃圾处理场,处理后的渗滤液已经不能达标。本文介绍了羊耳峪垃圾场现行的渗滤液处理法,分析了原因,提出了几种可行的渗滤液处理改造方案。 相似文献
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垃圾渗滤液处理难点及其对策研究 总被引:2,自引:0,他引:2
对垃圾填埋场渗滤液处理现状和处理方法的难点进行了阐述和总结。在综合分析了垃圾渗滤液处理工艺优缺点的基础上,选择了渗滤液较为理想的处理方式,即预处理+生物处理+后处理组合模式。介绍了微电解、氧化沟、砂滤三种工艺的特点,提出了垃圾渗滤液处理新的组合方式——微电解+氧化沟+砂滤的组合处理工艺,并分析了该组合工艺的优势。 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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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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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
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垃圾渗滤液处理工艺的试验研究 总被引:2,自引:1,他引:2
针对现有垃圾渗滤液处理工艺存在的问题,结合我国北方城市垃圾渗滤液的特征,试验采用混凝气浮、生化、吸附处理工艺处理垃圾渗滤液,结果表明,这套工艺是合理可行的.文中确定的试验参数的运行条件下,CODcr去除率达到99.1%,氨氮去除率达到96.6%,出水达到《生活垃圾填埋场污染控制标准》中的一级排放标准. 相似文献