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Optimization of energy consumptions of oxidation tanks in urban wastewater treatment plants with solar photovoltaic systems.
Journal of Environmental Management ( IF 8.7 ) Pub Date : 2020-09-12 , DOI: 10.1016/j.jenvman.2020.111353
Antonio Colacicco 1 , Enrico Zacchei 2
Affiliation  

This paper combines solar photovoltaic (PV) to wastewater treatment plants (WWTPs). A new methodology is proposed to design solar PV to reduce energy consumptions of aeration thanks in WWTPs. New analytical equations and parameters, based on the air temperatures, solar irradiations, biological kinetics, dissolved oxygens, mechanical oxygenations, are introduced to obtain the peak power of PV that maximize the auto-consumptions of aeration blowers installed in the oxidation tanks of WWTPs. The method allows a direct preliminary design and a calibrated estimation for energy power. To justify this method, three aspect are mainly discussed: (i) the oxidation tanks consume up to 30% of the energy of a WWTP; (ii) the temperature of wastewater is variable during the year, in the smaller WWTPs; (iii) the dissolved oxygen reduces, increasing temperature of wastewater. This methodology will support the sector in making decision over PV investments, helping wastewater utilities to consider sustainable management practices. Therefore, a further contribute to develop the integration of renewable energy sources combined with wastewater sectors is activated.



中文翻译:

利用太阳能光伏系统优化城市污水处理厂氧化罐的能耗。

本文将太阳能光伏(PV)结合到废水处理厂(WWTP)中。提出了一种新的方法来设计太阳能光伏发电,以减少污水处理厂的曝气能耗。引入了基于空气温度,太阳辐射,生物动力学,溶解氧,机械氧合的新分析方程式和参数,以获取PV的峰值功率,从而使安装在污水处理厂氧化罐中的曝气鼓风机的自动消耗最大化。该方法允许进行直接的初步设计和对能量的校准估计。为了证明该方法的合理性,主要从三个方面进行了讨论:(i)氧化池消耗的废水量占污水处理厂总能量的30%;(ii)在较小的污水处理厂中,一年中的废水温度是可变的;(iii)溶解氧减少,废水温度升高。这种方法学将支持该行业做出有关光伏投资的决策,帮助废水公用事业公司考虑可持续管理实践。因此,激活了将可再生能源与废水处理结合起来的进一步发展。

更新日期:2020-09-12
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