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首页> 外文期刊>Journal of applied science & environmental management: JASEM >Simulation of water quality parameters from the treatment of wastewater using stabilization ponds (Case study: Tehran wastewater stabilization pond)
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Simulation of water quality parameters from the treatment of wastewater using stabilization ponds (Case study: Tehran wastewater stabilization pond)

机译：使用稳定池处理废水的水质参数模拟（案例研究：德黑兰废水稳定池）

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摘要

Today, discharging the wastewaters into the river is the main factor of water pollution and associated with environmental impacts. There are several methods for wastewater treatment. The natural ways like wastewater stabilization pond (WSP) is apply in a lot of countries especially in under developed countries because no needed to high technology. The WSP’s are suitable for wastewater treatment in small societies and some special industries like slaughterhouse, dairy products and meat products and etc. The advantages of this way are high efficiency in treatment of pathogens, toxic and organic materials. These ponds treat the wastewater naturally by alga and bacterial reactions. Ecological condition and wastewater properties affect the efficiency of WSP. Furthermore the efficiency of WSPs depends to several factors like the temperature, light, alga and bacterial reactions and Etc and must be analyzed before construction. In this regard the quality parameters in Tehran WSP simulated with CE-QUAL-W2. The model has been calibrated and evaluated on the basis of collected data from Tehran WSP and the ability of the model analyzed to optimum the efficiency. Furthermore the concentration trend of parameters analyzes during the day in different hours to determine the effects of solar radiation and the others parameters on them. The results shows BOD concentration increase at noon and decrease at night that shows it depends to solar radiation. Alga also is a function of solar radiation and the concentration increase in noon and decrease in afternoon. The trend of phosphate and nitrate is the same and since these two parameters are used for growth process of algae so in noon decrease and in night increased. Because at night the growth process of algae is limited and no need for phosphate and nitrate exist so the concentration increased. The results of modeling with CE-QUAL-W2 show good agreement between the experiments and the simulation data and CE-QUAL-W2 is a suitable model for analyzing the quality parameters in WSP and can be used for design of new stabilization ponds or for improving the effluent quality of existing ponds.
机译：如今，将废水排入河流已成为水污染的主要因素，并与环境影响相关。有几种废水处理方法。诸如废水稳定池（WSP）之类的自然方法已在许多国家/地区应用，尤其是在发达国家中，因为不需要高科技。 WSP适用于小型社会和一些特殊行业的废水处理，如屠宰场，乳制品和肉制品等。这种方法的优点是可以高效处理病原体，有毒和有机物质。这些池塘通过藻类和细菌反应自然地处理废水。生态条件和废水性质影响水安全计划的效率。此外，WSP的效率取决于多个因素，例如温度，光，藻类和细菌反应以及Etc，必须在施工前进行分析。在这方面，使用CE-QUAL-W2模拟的德黑兰WSP中的质量参数。该模型已根据从德黑兰WSP收集的数据进行了校准和评估，并分析了模型的能力以优化效率。此外，参数分析在一天中不同小时的集中趋势，以确定太阳辐射的影响以及其他参数对它们的影响。结果显示BOD浓度在中午增加，在夜间减少，这取决于太阳辐射。藻类也是太阳辐射的函数，其浓度在中午增加，在下午减少。磷酸盐和硝酸盐的趋势是相同的，并且由于这两个参数用于藻类的生长过程，因此中午减少，夜间增加。因为在晚上藻类的生长过程受到限制，并且不需要磷酸盐和硝酸盐，所以浓度增加了。 CE-QUAL-W2的建模结果表明实验与仿真数据之间具有良好的一致性，CE-QUAL-W2是用于分析WSP中质量参数的合适模型，可用于设计新的稳定池或进行改进现有池塘的污水质量。

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