生活垃圾卫生填埋场清污分流与渗滤液收集系统的探讨

本文介绍了对生活垃圾卫生填埋场实行清污分流，以减少渗滤液；设置渗滤液收集系统，并对渗滤液进行处理，以防止垃圾填埋场渗滤液聚集、泄漏造成新的污染。     

生活垃圾卫生填埋汤清污分流与渗滤液收集系统的探讨

本文介绍了对生活垃圾卫生填埋场实行清污分流，以减少渗滤液；设置渗滤液收集系统，并对渗滤液进行处理，以防止垃圾填埋场渗滤液聚集、泄漏造成新的污染。     

低温条件下UASB+AMT工艺处理垃圾渗沥液的试验研究

通过对某市生活垃圾填埋场渗滤液处理的试验研究，得UASB AMT工艺在低温条件下的处理效果，并对运用该工艺处理垃圾渗滤液所存在的问题进行了讨论。     

浅析城市生活垃圾卫生填埋场渗滤液调节池的作用

本文通过对城市生活垃圾卫生填埋场渗滤液产生及处理方法的分析，提出设置渗滤液调节池的必要性，并运用工程实例对渗滤液调节池的池型和容积进行了探讨。     

隔水帷幕技术在非正规垃圾填埋场治理中的工程应用

基于非正规垃圾填埋场的危害,并结合在非正规垃圾填埋场治理中常用的搬迁减量技术、好氧稳定化技术和原位封场治理技术的优缺点,提出在非正规垃圾填埋场治理中应用隔水帷幕技术,分析了应用该技术的基本条件是垃圾填埋场底部要有合适的防渗性较好的黏性土层,并通过工程应用详述了隔水帷幕技术在垃圾填埋场搬迁减量治理中的适用性。隔水帷幕技术可有效阻止垃圾填埋土和渗滤液对填埋场周边土层的污染,阻断填埋场周边地下水与渗滤液的水力联系,有效管控垃圾填埋土中污染物的扩散。     

生活垃圾卫生填埋场渗滤液的处理

本文系统地论述了生活垃圾卫生填埋场渗滤液的水质、水量及其变化规律，并提出处理方法以及流程选择。对控制填埋场渗稳液污染的设计与研究提供参考。     

垃圾渗滤液脱氮处理工艺的工程实例

介绍了采用氨吹脱＋生物处理＋臭氧氧化工艺在深圳市过桥窝垃圾填埋场垃圾渗滤液处理中的应用情况。经半年多的运行实践证明：该工艺对渗滤液中氨氮去除效果稳定，对于氨氮浓度高达2000～2500mg／L的渗滤液，处理后出水可降至2～10mg／L，氨氮去除效率达99％以上。     

浅析城市生产垃圾卫生填埋场渗滤液调节池的作用

本文通过对城市生活垃圾卫生填埋场渗滤产生及处理方法的分析，提出设置渗滤液调节池的必要性，并运用工程实例对渗滤液调节池的池型和容积进行了探讨。     

西北卫生填埋场渗滤液回灌系统研究

回灌技术是一种简单、低廉的渗滤液处理技术,可有效降低渗滤液中COD和氨氮的含量,加速填埋场内垃圾的降解,提高产甲烷速率和甲烷的产量,增大填埋场的沉降速率和总沉降幅度,缩短填埋场的维护期.回灌技术能够适应渗滤液水质水量的复杂变化,在我国西北地区有非常广阔的应用前景.同时,由于该技术在我国利用过程中尚缺乏成熟的工艺设计和运行经验,所以还有待进一步研究和实践.     

准好氧填埋场稳定化指标的室内模拟研究

准好氧填埋场是传统填埋场可持续发展的一个重要的方向,本文结合准好氧填埋场的室内模拟实验结果以及理论分析,提出了准好氧填埋场稳定化评价指标的四条选取原则,在模拟实验的基础上,从渗滤液性质、垃圾降解特性、填埋场地沉降三个方面建立了准好氧的评价指标体系,所包含的指标有:渗滤液COD、氨氮、TVS/TDS,固相垃圾BDM,场地沉降量。     

垃圾填埋场渗沥液调节池的浮盖设计与施工

在调节池设计上采用浮盖技术，并用高密度聚乙烯（HDPE）土工防渗膜作为浮盖材料，结合工程经验对填埋场渗沥液调节池大面积池面加盖的设计与施工进行阐述。     

Performance of North American Bioreactor Landfills. I: Leachate Hydrology and Waste Settlement

An assessment of state-of-the-practice at five full-scale North American landfills operating as bioreactors is presented in this two-paper set. This paper focuses on effectiveness of liners and leachate collection systems, leachate generation rates, leachate recirculation practices and rates, effectiveness in moistening the waste, and settlement of the waste over time. Except in one case, the liner and leachate collection systems at the bioreactor landfills were similar to those used for landfills operated conventionally. Leachate generation rates increased approximately linearly with recirculation rate, but in all cases, the leachate generation rate was <300?L/m2?year. Leachate depths generally were maintained within regulatory requirements, even with the highest recirculation rates. Leakage rates from liners at bioreactor landfills, including alternative liner designs employing geosynthetic clay liners, are comparable to leakage rates from conventional landfills. Thus, based on the information gathered in this study, additional requirements or features for liners or leachate collection systems are not warranted for bioreactor landfills. Diminishing capacity of horizontal recirculation trenches is common. Experience at one landfill suggests that small doses at high frequency under substantial injection pressure can deter loss of trench capacity. Only those landfills that were aggressive in recirculation had achieved water contents near the field capacity. Increasing the amount of liquid that is added may be required to achieve field capacity at some landfills, particularly if a final cover is placed soon after waste grades are reached. The rate of time-dependent waste settlement attributed to biodegradation is about 1.6 times larger in bioreactor landfills than in conventional landfills, and increases as the recirculation dosage increases.     

某固体废弃物填埋场续建工程的防渗处理

简要介绍了深圳市下坪固体废弃物填埋场（以下简称下坪场）续建工程的概况以及目前国内外填埋场防渗技术应用现状，通过方案比较，确定了该工程采用双层复合衬层水平防渗系统。     

Treatment of Leachate by Aged-Refuse-based Biofilter

Refuse in landfills becomes stabilized or aged, as organic matter in the refuse gradually degrades and as the soluble inorganic substances dissolve during its long-term stabilization process. Within this paper, this process is referred to as mineralization and the resultant stabilized or essentially stabilized refuse is referred to as “aged refuse.” The aged refuse contains a wide spectrum and large quantity of microorganisms, which have a strong decomposition capability for refractory organic matter present in some wastewaters, such as leachate. In this study, aged refuse excavated from two to ten year old closed landfill compartments in Shanghai Refuse Landfill (SRL) was characterized in terms of particulate distribution by screening, and a biofilter consisting of ten year old aged refuse was then used for biofiltration of leachate sampled from the landfill. Typically, 400 kg of screened aged refuse with limiting diameter less than 15 mm was used as biofiltration materials in a round shaped biofilter with 80 cm inner diameter and 80 cm height. Leachate with initial chemical oxygen demand (COD), biological oxygen demand (BOD), and NH3–N concentrations of 3,000–7,000, 540–1,500, and 500–800 mg/L, respectively, was passed through the biofilter. As a result, the corresponding concentrations in the effluent were reduced to lower than 100–350, 10–200, and 10–25 mg/L, respectively, 90–99% removal for these parameters at a hydraulic load of 80–200 L/m3 refuse/day. The color of the effluent became slightly gray, in comparison with the heavy brownish color of the influent. The treatment efficiencies heavily depend on hydraulic load, BOD/COD ratios in the leachate, and preliminary treatment of the aged refuse. A variety of leachates with various BOD/COD ratios was tested. It was found that the effluent deteriorated when BOD/COD ratios were lower than 0.1–0.2. Increase of hydraulic load resulted in a decrease of removal efficiencies. Removal of stone, plastics, and glass, etc., from the aged refuse improved the treatment. A pilot test was conducted at SRL and the experimental results obtained at laboratory scale were verified.     

危险废物填埋场施工组织探讨

危险废物填埋场的施工要求很高,通过对江西危险废物填埋场的施工过程的分析,指出施工中容易出现的问题和各工序施工需要特别注意的事项。建设项目业主和监理须对各工序严格控制,才能确保危险废物填埋场的施工质量。     

工业氨氮废水的处理方法探讨

工业氨氮废水的大量排放，对自然环境和人体健康造成了严重的危害。因此，如何经济高效地处理工业氨氮废水以达到排放标准成为人们必须面对的重要问题。文章对工业氨氮废水的处理技术从典型和新型技术两个方面进行了总结和对比，为实际应用提供参考。其中，处理低浓度氨氮废水的方法有:吸附法、氯化法、生物法、膜分离、土地处理等；处理高浓度氨氮废水的方法有:吹脱法、化学沉淀法等；新型技术包括:微波法、超声波法、光催化技术、生物膜电极法等。      

电解铝生产中含氟烟气的治理技术

介绍了铝电解含氟污染物的产生与危害,重点从生产工艺角度探讨了治理铝电解阳极烟气的方法。着重描述了干法净化工艺中的一些主要元素,论证了干法净化技术在铝电解行业的重要性,使大家对干法净化技术有一个概括的了解,它是治理电解铝含氟烟气污染,实现节能减排的最优方法。     

Installation of Horizontal Wells in Landfilled Waste Using Directional Drilling

Leachate levels within a landfill must often be controlled for environmental and/or regulatory reasons by means of pumping from wells. Conventional vertical wells are usually used for this purpose, but there is a perception that they are inefficient. In this paper, the feasibility of using directional drilling to install horizontal wells for leachate control in landfills is investigated with reference to pilot and full scale field trials at Rainham, U.K. The difficulties of well-screen design and installation in a landfilled waste are discussed; the insights gained during trial installation are described; and the effectiveness of three trial wells is assessed with reference to the leachate flow rates and drawdowns achieved, in comparison with conventional vertical wells. It is concluded that the drilling rig used must be sufficiently powerful to cope with the likelihood of at least partial borehole collapse around the well-screen during installation; that the screen slot size can be based on at least the D30 particle size of the waste and a natural filter allowed to develop around the well (provided that the resulting well screen is strong enough); and that as experience with the technology grows, directionally drilled horizontal wells could represent a viable, cost effective alternative to conventional vertical wells for leachate control in landfills.     

焦化废水与冷轧废水水质成分和处理方法的比较

对钢铁行业最难处理的焦化废水和冷轧废水,从来源、组成、处理工艺以及处理难点进行比较,使读者对这两种水质的处理方法有较好的了解。     

国内锑冶金技术现状及进展

广西是我国锑及锡、铅的主要产区 ,锑矿物形态以复杂的脆硫锑铅矿为主 ,本文介绍了国内有关单位近年来提出的针对该复杂锑铅矿处理的许多可行的湿法工艺流程 ,并重点介绍了矿浆电解法处理该复杂锑铅矿的流程。