Project Case | AVIC Huaqiang’s air‑suspension blowers have been successfully deployed at the newly built wastewater treatment plant in Zhoukou, Henan, delivering high efficiency and energy savings to support wastewater aeration.

I. Project Overview

This project that has been implemented is A new wastewater treatment plant has been built in Zhoukou, Henan Province. The plant site is equipped with core process units such as aerobic tanks and equalization tanks, with a water depth of 3.5 meters; the aeration system is the primary energy‑consuming component in the wastewater biochemical treatment process. In the project’s early stages, conventional roots blowers suffered from high energy consumption, significant noise, the need for regular lubricant replacement, and cumbersome maintenance. Following multiple rounds of equipment performance and energy‑consumption comparisons and selections, the final choice was to adopt… AVIC Huaqiang Air-Suspension Centrifugal Blower As the core aeration and air-supply equipment for the entire plant, it has undergone on-site installation and commissioning and has been stably put into continuous operation.

In an on-site demonstration, the entire unit of the AVIC Huaqiang air‑suspension blower was equipped with the MCGS intelligent touch‑screen monitoring system, enabling 24/7 real-time acquisition of comprehensive operational parameters, including system pressure, gas flow rate, motor power, rotational speed, and temperature. Following commissioning, the equipment operated smoothly throughout its entire service life, with all performance indicators fully meeting the aeration requirements of the wastewater treatment plant. Its energy‑saving and maintenance‑free advantages were clearly validated by field measurements.

II. Core Technological Advantages of the AVIC Huaqiang Air-Suspension Blower

1. Air‑suspension bearings operate oil‑free throughout their entire service life, with clean air supply and zero emissions.

The equipment employs aerospace-grade air‑bearing technology, with the impeller levitated in an air film during operation—eliminating mechanical contact and obviating the need for a lubrication system.

• Advantage 1: The aeration gas is oil-free, preventing oil contamination from entering the biochemical tank and disrupting the microbial community, thereby ensuring stable effluent quality that consistently meets discharge standards.
• Advantage 2: Eliminates the need to replace consumables such as lubricating oil, oil–gas separators, and filter elements, significantly reducing operational and maintenance material costs, and is well-suited to the 24/7 continuous operation of wastewater treatment plants.

2. Ultra-high energy efficiency, significantly reducing aeration electricity costs at wastewater treatment plants.

High-speed permanent‑magnet synchronous motor combined with a three‑dimensional flow‑optimized impeller design delivers energy savings of 30%–50% compared to conventional Roots blowers and 15%–25% versus multi‑stage centrifugal blowers. In wastewater treatment plants, aeration systems account for more than 60% of total energy consumption; long‑term deployment can substantially reduce operating electricity costs, aligning with current demands for cost reduction, efficiency gains, and green, low‑carbon development.

3. Intelligent integrated automatic control system, with real-time visibility and adjustable operating conditions.

The entire system is equipped with an MCGS industrial touch screen, featuring built-in pressure profiling and automatic recording of operational data, eliminating the need for an additional control cabinet.

• Automatically adjusts blower speed based on dissolved oxygen and water level in the tank, matching aeration airflow to demand.
• The system continuously monitors parameters such as pressure, flow rate, motor power, temperature, current, and rotational speed, triggering automatic early warnings and protective shutdowns when thresholds are exceeded.
• Built-in flow–pressure performance curve, enabling operations and maintenance personnel to intuitively monitor equipment load; supports retention of historical operating data, facilitating post‑event analysis of operating conditions and optimization of aeration strategies.

  4. Low noise, compact structure, and simple installation and operation/maintenance.

The unit features integrated air-cooling and noise‑reduction design, with operating noise below 75 dB, eliminating the need for a dedicated soundproofed machine room. It comes equipped with built-in lifting rings, occupies minimal floor space, and requires no complex civil‑engineering foundations for installation. Routine inspections can be performed by a single operator, significantly reducing on-site operations and maintenance labor requirements.

III. Quantitative Calculation of Measured Energy-Saving Benefits for the Project

  Calculation Base Parameters

1. Average operating conditions of the equipment: the average of the two sets of measured power values is 49.2 kW, and the average aeration flow rate is 58.1 Nm³/min.
2. Operating mode: The wastewater treatment plant maintains continuous aeration 24 hours a day, year-round, with an annual operating duration of 8,760 hours.
3. Industrial electricity tariff: Standard tariff for municipal wastewater treatment plants, RMB 0.65 per kWh;
4. Energy‑saving benchmark: Under the same airflow, it achieves 30%–50% energy savings compared with conventional Roots blowers, with benefits calculated across three tiers.

1. Annual Electricity Consumption and Electricity Cost Benchmark for a Single Fan

Annual electricity consumption of the AVIC Huaqiang air‑suspension blower: 49.2 × 8,760 = 430,992 kWh.
Annual basic electricity charge: 430,992 × 0.65 = 280,144.8 yuan

2. Breakdown of Electricity Savings by Tariff Tier

3. Additional savings in operational costs

Annual fixed O&M costs for a conventional Roots blower: lubricating oil, filter elements, and bearing consumables—RMB 12,000; plus monthly maintenance labor—RMB 8,000, for a total of RMB 20,000 per year.

AVIC Huaqiang’s air‑suspension blowers feature an oil‑free, maintenance‑free design, requiring only routine inspections; annual operation and maintenance costs are less than RMB 2,000.

An additional annual savings of RMB 18,000 in operation and maintenance costs. 。

  4. Total annual cost reduction benefits

5. Low-Carbon Emission Reduction Value

Industrial electricity consumption converted to standard coal: for every 10,000 kWh of electricity consumed, approximately 3.05 tons of standard coal are used.

Taking the project’s standard 40% energy‑saving operating condition as an example, annual electricity savings amount to 287,300 kWh, reducing standard coal consumption by 87.64 tonnes per year. This also leads to a corresponding reduction in emissions of carbon dioxide, sulfides, and other pollutants, helping the wastewater treatment plant meet its energy‑saving and carbon‑reduction targets and aligning with the requirements of green water‑management development.

Calculation Summary

A single AVIC Huaqiang air‑suspension blower can reduce the plant’s overall operating costs by an annual amount. 138,000–298,000 yuan Under normal, stable operating conditions, annual savings exceed RMB 200,000. The equipment can recoup the price differential compared to conventional blowers within 2–3 years through electricity cost reductions, and its overall design boasts a service life of over 15 years, generating sustained net benefits over the long term. It is the preferred solution for new wastewater treatment plants as well as for energy‑saving retrofits of aging aeration systems.

IV. Application Value of Air-Suspension Blowers in the Wastewater Treatment Industry

1. Biochemical Process Assurance : Oil-free clean air prevents oil contamination of the packing material, inhibits the growth of activated sludge, stabilizes COD and ammonia‑nitrogen removal performance, and reduces chemical dosing costs.
2. Reducing operational costs : No lubrication required, fewer wear parts, and extended bearing life, reducing annual maintenance costs by more than 70%; its high-efficiency, energy-saving features directly cut the plant’s electricity expenses.
3. Smart Water Services Adaptation : Can interface with wastewater treatment plant PLCs and smart water management platforms, enabling remote monitoring and remote speed control, and supporting the construction of modern, unmanned wastewater treatment facilities.
4. Green and environmentally compliant : The equipment produces no oil‑contaminated effluent and operates with low noise, meeting environmental protection standards for industrial park construction and helping the wastewater treatment plant achieve its energy‑saving and consumption‑reduction targets.

V. Project Summary

The successful commissioning of the newly built wastewater treatment plant project in Zhoukou, Henan, has been verified. AVIC Huaqiang Air-Suspension Blower Proven operational maturity in municipal wastewater aeration applications. Leveraging core technology derived from aerospace‑based air‑suspension bearings, the equipment offers multiple advantages—oil‑free cleanliness, high efficiency and energy savings, intelligent self‑control, and low maintenance—and field test data unequivocally demonstrate its suitability for a wide range of aeration conditions across small to medium‑sized, newly built municipal wastewater treatment plants in China.

AVIC Huaqiang consistently upholds the development philosophy of “Advancing Aerospace Technology to Accelerate Green and Sustainable Development,” deeply cultivating the aeration and gas‑supply sectors—including wastewater treatment, river‑channel remediation, and industrial effluent management. Guided by the core values of “Dreams, Integrity, Quality, and Pragmatism,” the company continuously delivers high‑efficiency, low‑carbon, and reliable aeration blower solutions to the water‑environment‑management industry, helping the sector achieve energy savings, carbon reduction, and enhanced quality and efficiency.