Energy Usage Analysis and Saving Strategy of Wastewater Treatment Plant in Industrial Park

• Main Authors: Wang, Yen-Hua, 王彥樺
• Other Authors: Chuang, Shun-Hsing
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/283t75

碩士 === 朝陽科技大學 === 環境工程與管理系 === 106 === In recent years, industrial wastes (flue gas, wastewater and solid wastes) have to meet stringent discharge standards after treatment due to increasing environmental protection awareness. In this study, under the context of wastewater treatment procedures, two domestic wastewater treatment plants treating stimulated wastewater were selected. After going through different treatment units, the discharge has met discharge standards. The electrical energy consumed by each unit was analyzed, and correlation data was used to stimulate the control of operating parameters in in-situ situations. This is to ensure the overall treatment unit can maximize its efficiency while minimizing its energy consumption, resulting in energy-saving and low-carbon efficacies. Analytical results showed that if conventional activated sludge treatment was used, the aeration tank had the highest energy consumption. According to data, if the overall treatment efficiency was not to be affected, auxiliary transformers with suitable measures can be installed to improve overall energy savings, decreasing energy consumptions for that unit. In the case study of Douliou Industrial Park Wastewater Treatment Plant, under same treatment procedures, the overall monthly energy consumption decreased 80,894 kWh following installations of transformers (calculated according to the annual average of pre and post-installation). Long-term statistical approaches were also used to analyze the energy consumption, in which the discharge qualities following treatment or the efficacy of each treatment unit can be used to forecast future energy consumptions and dispatch managements. The setup of an energy management system via hardware units, software design controls and real-time transmission systems can also achieve better energy-saving efficacies.