Environmental Genius Departement, Engineering Sciences Faculty,Boumerdes University, Boumerdes, Algeria.
J Environ Health Sci Eng. 2013 Dec 19;11(1):37. doi: 10.1186/2052-336X-11-37.
Environmental impact assessment will soon become a compulsory phase in future potable water production projects, in algeria, especially, when alternative treatment processes such sedimentation ,coagulation sand filtration and Desinfection are considered. An impact assessment tool is therefore developed for the environmental evaluation of potable water production. in our study The evaluation method used is the life cycle assessment (LCA) for the determination and evaluation of potential impact of a drink water station ,near algiers (SEAL-Boudouaoua).LCA requires both the identification and quantification of materials and energy used in all stages of the product's life, when the inventory information is acquired, it will then be interpreted into the form of potential impact " eco-indicators 99" towards study areas covered by LCA, using the simapro6 soft ware for water treatment process is necessary to discover the weaknesses in the water treatment process in order for it to be further improved ensuring quality life. The main source shown that for the studied water treatment process, the highest environmental burdens are coagulant preparation (30% for all impacts), mineral resource and ozone layer depletion the repartition of the impacts among the different processes varies in comparison with the other impacts. Mineral resources are mainly consumed during alumine sulfate solution preparation; Ozone layer depletion originates mostly from tetrachloromethane emissions during alumine sulfate production. It should also be noted that, despite the small doses needed, ozone and active Carbone treatment generate significant impacts with a contribution of 10% for most of the impacts.Moreover impacts of energy are used in producing pumps (20-25 GHC) for plant operation and the unitary processes (coagulation, sand filtration decantation) and the most important impacts are localized in the same equipment (40-75 GHC) and we can conclude that:- Pre-treatment, pumping and EDR (EDR: 0.-6 0 kg CO2 eq. /produced m3) are the process-units with higher environmental impacts.- Energy consumption is the main source of impacts on climate change.- Chemicals consumption (e.g. coagulants, oxidants) are the principle cause of impacts on the ozone layer depletion.- Conventional plants: pre-treatment has high GHG emissions due to chemicals consumption.
在阿尔及利亚，环境影响评估将很快成为未来饮用水生产项目的强制性阶段，特别是当考虑到替代处理工艺（如沉淀、混凝、砂滤和消毒）时。因此，开发了一种用于饮用水生产环境评估的影响评估工具。在我们的研究中，所使用的评估方法是生命周期评估（LCA），用于确定和评估位于阿尔及尔附近的饮用水站（SEAL-Boudouaoua）的潜在影响。LCA 需要确定和量化产品生命周期各个阶段使用的材料和能源，当获取清单信息时，然后将其解释为对涵盖 LCA 的研究区域的潜在影响“生态指标 99”的形式，使用 simapro6 软件进行水处理过程是必要的，以发现水处理过程中的弱点，以便进一步改进，确保生活质量。主要来源表明，对于所研究的水处理过程，最大的环境负担是混凝剂制备（所有影响的 30%）、矿物资源和臭氧消耗层，不同过程之间的影响分配与其他影响不同。在硫酸铝溶液制备过程中主要消耗矿物资源；臭氧消耗层主要源自硫酸铝生产过程中四氯化碳的排放。还应注意的是，尽管需要小剂量，但臭氧和活性碳处理会产生重大影响，对大多数影响的贡献为 10%。此外，能源的影响用于为工厂运行和单元过程（混凝、砂滤、沉淀）生产泵（20-25 GHC），最重要的影响位于同一设备（40-75 GHC）中，我们可以得出结论：- 预处理、泵送和 EDR（EDR：0.-60 kg CO2 eq./ 生产 m3）是具有较高环境影响的过程单元。- 能源消耗是气候变化影响的主要来源。- 化学品消耗（例如混凝剂、氧化剂）是臭氧消耗的主要原因。- 常规工厂：由于化学品消耗，预处理会导致温室气体排放高。
