Environmental Chemistry and Biology, Environmental Health Department, High Institute of Public Health, Alexandria University, Egypt ; Public Health Sciences, Biology Department, College of Science and Humanity Studies, Salman bin Abdulaziz University, Saudi Arabia.
Environmental Engineering, Environmental Health Department, High Institute of Public Health, Alexandria University, Egypt.
J Adv Res. 2015 Jul;6(4):579-86. doi: 10.1016/j.jare.2014.02.003. Epub 2014 Feb 12.
Alexandria Governorate contracted an international company in the field of municipal solid waste management for the collection, transport and disposal of municipal solid waste. Construction and operation of the sanitary landfill sites were also included in the contract for the safe final disposal of solid waste. To evaluate the environmental impacts associated with solid waste landfilling, leachate and groundwater quality near the landfills were analyzed. The results of physico-chemical analyses of leachate confirmed that its characteristics were highly variable with severe contamination of organics, salts and heavy metals. The BOD5/COD ratio (0.69) indicated that the leachate was biodegradable and un-stabilized. It was also found that groundwater in the vicinity of the landfills did not have severe contamination, although certain parameters exceeded the WHO and EPA limits. These parameters included conductivity, total dissolved solids, chlorides, sulfates, Mn and Fe. The results suggested the need for adjusting factors enhancing anaerobic biodegradation that lead to leachate stabilization in addition to continuous monitoring of the groundwater and leachate treatment processes.
亚历山大省与一家国际公司签订了一项关于城市固体废物管理的合同，该公司负责收集、运输和处理城市固体废物。合同还包括卫生填埋场的建设和运营，以确保固体废物的安全最终处置。为了评估与固体废物填埋相关的环境影响，对垃圾填埋场附近的渗滤液和地下水质量进行了分析。渗滤液理化分析的结果证实，其特性高度可变，有机物、盐分和重金属污染严重。BOD5/COD 比（0.69）表明渗滤液可生物降解且未稳定。还发现，尽管某些参数超过了世界卫生组织和美国环保署的限制，但垃圾填埋场附近的地下水并未受到严重污染。这些参数包括电导率、总溶解固体、氯化物、硫酸盐、锰和铁。结果表明，需要调整因素，以增强导致渗滤液稳定的厌氧生物降解，此外还需要对地下水和渗滤液处理过程进行持续监测。
