共查询到19条相似文献,搜索用时 109 毫秒
1.
2.
生活垃圾填埋场渗滤液的新型处理技术 总被引:14,自引:0,他引:14
介绍了国内外垃圾填埋场渗滤液的处理技术,在此基础上提出了使得最终出水达标排放的新型处理技术(回灌-常规处理技术-膜分离)的工艺概况和特点,并将该技术与常规处理技术进行了经济分析。 相似文献
3.
本文根据我国填埋场渗滤液产生特点,比较了新旧生活垃圾填埋场污染控制标准差异,结合新颁布的《生活垃圾填埋场污染控制标准CB16887—2008》排放要求,提出了我国填埋场渗滤液研究及发展方向,认为新标准的颁布,必将大力促进渗滤液深度处理技术的研发;而在当前经济技术条件下,渗滤液直接场内处理达标外排难度较大,而渗滤液的场内预处理后进行灌溉处理,实现渗滤液的循环利用是一种确实有效的方法;同时渗滤液中重金属的去除,也将是渗滤液处理技术发展的关键组成。 相似文献
4.
5.
为研究生活垃圾卫生填埋场渗沥液浓缩液表层滴管技术的效果,采用现场试验的方法,对生活垃圾卫生填埋场生化+MBR+反渗透膜处理工艺产生的渗沥液的回灌量情况的变化、回灌后对库区内渗沥液水质COD、BOD、氨氮等产生的影响进行研究。结果表明,渗沥液浓缩液回灌实施期间,各月间回灌量差异明显;不同月份回灌液因降雨量不同而差异较大。但从试验来看,无论回灌液水质如何,库区产生的渗沥液水质COD、BOD和氨氮并未出现较大波动。试验证明,实施渗沥液浓缩液回灌是中小型垃圾卫生填埋场消纳渗沥液浓缩液的有效手段,填埋场可结合场区自身现状实施表层滴管技术处理渗沥液浓缩液。 相似文献
6.
7.
南宁市垃圾渗滤液对地表水的影响分析 总被引:1,自引:0,他引:1
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。 相似文献
8.
9.
针对宁波市奉化区张家岙填埋场渗滤液处理站原系统进行提标改造,新增1条罐体形式的生化系统生产线,更换一期、二期生产线设备,提高处理能力。采用"MBR (两级硝化反硝化+外置式超滤)+纳滤+反渗透"处理工艺,使最终出水水质稳定达到GB 16889—2008生活垃圾填埋场污染控制标准表2排放要求。在偏老龄垃圾填埋场渗滤液的处理中,碳源费和电费是此类型渗滤液处置过程中主要运行成本。 相似文献
10.
南宁市垃圾渗滤液对地表水的影响 总被引:2,自引:0,他引:2
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。 相似文献
11.
分析了我国简易垃圾填埋场及其渗沥液的特征,根据渗沥液原位灌溉技术实验及工程应用研究成果,提出以层内回灌、覆盖层灌溉为主的渗沥液原位灌溉技术在简易垃圾填埋场封场工程中应用的可行性和合理性. 相似文献
12.
13.
广州大田山垃圾填埋场渗滤液污染现状的调查 总被引:10,自引:1,他引:9
华南处于亚热带地区,气候温热多雨,当采用填埋方法处理城市垃圾时,应注意垃圾渗滤液引起的二次污染问题,针对广州大田山垃圾填埋场的环境污染现状,对此进行分析和讨论。 相似文献
14.
15.
16.
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. 相似文献
17.
18.
以粤西地区某生活垃圾填埋场渗沥液调节池的设计为例,探讨了渗沥液调节池规模计算的新思路,旨在提出适合于珠三角大降雨量地区生活垃圾卫生填埋场渗沥液调节容量及处理规模的估算方法. 相似文献
19.
高密度聚乙烯(HDPE)膜在垃圾填埋场基底防渗层中的应用 总被引:9,自引:2,他引:7
介绍了高密度聚乙烯(HDPE)膜的特性,对HDPE膜在垃圾填埋场基底防渗层的设计、施工及质量控制进行了探讨。同时对目前我国关于HDPE膜在垃圾填埋场基底防渗层中的应用状况进行了分析,从技术和管理的角度,针对该防渗技术提出一些见解和建议。 相似文献