Exploration and practice of energy conservation and consumption reduction in an underground wastewater treatment plant in Zhengzhou
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摘要: “双碳”背景下,地埋式污水处理厂如何根据自身特点加强工艺创新与科学调控,最大程度利用现有条件实现节能降耗,是污水处理行业亟需探讨的问题。郑州市某地埋式污水处理厂通过梳理厂区主要用电构成和大功率用电设备的运行模式,利用精准曝气、设备运行模式优化和技术创新,成功将该污水厂的年均单位污水处理耗电量由0.416 kW·h/m3降至0.340 kW·h/m 3 ,下降18.27%;其中,气水比、鼓风机吨水单耗、进水泵年吨水耗电量和通风风机与照明设施的年耗电量下降明显,下降幅度均在5%以上,节能降耗效果显著,生产运行能力达到部分地区城镇污水处理能耗消耗先进水平,能够为同类型污水处理厂低碳运行提供实际参考。Abstract: Against the backdrop of the “dual carbon” goals, exploring how underground wastewater treatment plants can enhance process innovation and scientific regulation based on their own characteristics, and maximize the use of existing conditions to achieve energy conservation and consumption reduction, remains an urgent issue for the wastewater treatment industry. By analyzing the main power consumption components and operating modes of high-power electrical equipment, an underground wastewater treatment plant in Zhengzhou successfully reduced its average annual power consumption from 0.416 kW·h/m3 to 0.340 kW·h/m3 through precise aeration, optimized equipment operation, and technological innovation, representing an 18.27% effective decrease in specific power consumption. Notably, indicators including the air-water ratio, electricity consumption per ton of water for blowers, annual electricity consumption per ton of water for influent pumps, and annual electricity consumption of ventilation fans and lighting facilities all decreased significantly, with each reduction exceeding 5%. This practice has yielded remarkable results in energy conservation and consumption reduction, and the plant's production and operation capacity has reached an advanced level in terms of energy consumption for urban wastewater treatment in some regions. It provides a practical reference for the low-carbon operation of similar underground wastewater treatment plants.
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