What are the significant advantages of municipal sewage treatment equipment in terms of energy consumption optimization and operational stability?
Publish Time: 2026-01-09
With the acceleration of urbanization and increasingly stringent environmental standards, municipal sewage treatment has moved from "meeting discharge standards" to a new stage of "high efficiency, low carbon emissions, and intelligent stability." As a core infrastructure for urban water environment management, modern municipal sewage treatment equipment significantly reduces energy consumption while greatly improving operational reliability and resilience through intelligent control, efficient process integration, energy-saving equipment application, and systematic operation and maintenance strategies. This not only alleviates the financial burden of operation but also provides solid support for achieving "dual carbon" goals and sustainable water management.1. Intelligent Control System: Achieving Precise Aeration and Dynamic Load MatchingTraditional sewage treatment plants often use fixed aeration or extensive control, resulting in a large waste of electricity in excessive oxygen supply. Municipal sewage treatment equipment generally integrates an intelligent control system based on the Internet of Things and artificial intelligence. The system monitors key parameters such as influent water quality, dissolved oxygen, and oxidation-reduction potential online, calculates the optimal aeration rate in real time, and dynamically adjusts the aeration rate by linking variable frequency fans and regulating valves. For example, automatically reducing fan speed during low-load periods at night, or increasing sludge concentration in advance during high-flow periods in the rainy season. This "on-demand energy supply" mode can save 20%–40% of electricity in the aeration system, while avoiding nitrification failure due to insufficient oxygen supply, significantly improving effluent stability.2. High-efficiency, low-consumption process combinations: reducing energy consumption from the sourceModern municipal equipment widely adopts high-efficiency, low-consumption processes such as modified A²/O, MBBR, and MABR. Taking MBBR as an example, it significantly increases the biomass per unit volume and shortens the hydraulic retention time by adding high specific surface area suspended packing to the biological treatment tank, thereby reducing the tank volume and the power of supporting equipment; MABR uses hollow fiber membranes to directly supply oxygen to the biofilm, with an oxygen utilization rate of over 90% and energy consumption reduced by more than 50%. In addition, some projects introduce anaerobic ammonia oxidation technology to treat high ammonia nitrogen side flows, completely skipping the traditional nitrification-denitrification path and saving 60% of carbon source and energy consumption. These process innovations fundamentally reconstruct the energy flow, achieving "less energy consumption, more treatment." 3. High-Efficiency Equipment Selection and Energy Recovery: Transforming "Energy Consumption" into "Productivity"At the key equipment level, municipal wastewater treatment plants prioritize first-level energy-efficient products such as permanent magnet synchronous motors, magnetic levitation blowers, and high-efficiency submersible pumps. Among these, magnetic levitation blowers, with their zero mechanical friction, low noise, and high efficiency, maintain excellent performance even under partial load, achieving comprehensive energy savings of up to 30%. Furthermore, some advanced plants utilize anaerobic sludge digestion combined with biogas cogeneration to convert organic pollutants into electricity and heat, achieving energy self-sufficiency or even external supply; or they utilize residual pressure from effluent to drive turbines for power generation. These energy recovery measures enable wastewater treatment plants to gradually transform into "energy-neutral" or even "energy factories."4. Full Lifecycle Operation and Maintenance Guarantee: Enhancing Long-Term Operational StabilityStability depends not only on hardware but also on scientific operation and maintenance. Modern municipal equipment is equipped with remote monitoring platforms and predictive maintenance systems, which can provide early warnings of equipment failures and avoid sudden downtime. Simultaneously, standardized modular designs facilitate rapid component replacement, reducing maintenance downtime. When faced with fluctuations in water quality and quantity, the system can automatically switch operating modes to maintain effluent quality up to standard. This closed-loop management system of "sensing-decision-execution-feedback" ensures stable and efficient operation of the equipment 365 days a year.In summary, municipal sewage treatment equipment is no longer simply a "pollution treatment terminal," but a low-carbon infrastructure integrating intelligent control, green processes, efficient equipment, and smart operation and maintenance. Its breakthroughs in energy consumption optimization and operational stability not only reduce operating costs but also strengthen the foundation of urban water ecological security, providing indispensable support for building resilient, green, and smart cities.
