1 Project Overview

The Heze Mudan Airport Wastewater Treatment Station Project is an essential environmental infrastructure facility supporting the operation of Heze Mudan Airport in Shandong Province, China.

The project ensures safe collection, treatment, and reuse of domestic wastewater generated from airport terminals, catering facilities, office buildings, and oil storage areas.

The treated effluent is reused as cooling water supplement for a nearby power plant, achieving zero discharge and full resource recovery, supporting sustainable airport operation.

2 Project Information

3 Client Challenges

• Complex wastewater composition including oil-containing wastewater

• Large fluctuation in influent flow rate

• High effluent quality requirement for reuse standards

• Limited land availability within airport area

• Requirement for compact system layout

• High operational reliability and low staffing requirement

Core Challenge
Deliver a compact and highly reliable wastewater treatment system ensuring zero discharge and stable reuse under airport operating conditions

4 Engineering Solution

SYNERAQUA implemented an integrated treatment system based on biological treatment and membrane separation technology

Process Flow
Pre-treatment → Hydrolysis Acidification → A/O Biological Treatment → MBR System → Sodium Hypochlorite Disinfection → Reuse Water Storage → Reuse System

MBR System Configuration
The MBR system operates under a cyclic suction mode with intermittent operation to ensure membrane stability. Continuous aeration provides oxygen supply and membrane surface scouring to prevent fouling. An online chemical cleaning system is integrated for long-term performance stability

Automation Functions

• Automatic pump control based on equalization tank level

• Adjustable internal recycle flow control

• MBR cyclic operation control

• Automatic disinfectant dosing linked to effluent flow

• Full PLC-based centralized control system

5 Scope of Work

SYNERAQUA was responsible for full EPC delivery, including

• Process design and system engineering

• MBR system supply and integration

• Biological treatment system construction

• Electrical and instrumentation works

• Automation and PLC control system integration

• Installation supervision and commissioning

• System performance testing and optimization

• Operator training and technical support

6 Key Technologies and Engineering Highlights

Hydrolysis Acidification Pre-treatment enhances biodegradability of complex wastewater

MBR Membrane Technology provides high-quality effluent and reduces footprint by more than 50 percent

Zero Discharge Design enables full wastewater reuse within airport infrastructure

Modular System Design ensures rapid installation and commissioning

Long-term Operation Assurance integrates online chemical cleaning and preventive maintenance

7 Performance Results

• Daily Treatment Capacity: 200 m³/day

• Effluent Compliance Rate: ≥98 percent under normal operation

• Reuse Rate: 100 percent

• Annual Reuse Volume: approximately 73,000 m³

• Sludge Handling: periodic removal and external disposal

• Operation Mode: fully automated PLC control system

8 Project Value

The project ensures safe and compliant wastewater treatment for airport operations while enabling full resource reuse.

Key contributions include

• Zero discharge wastewater management

• Conversion of wastewater into reusable resources

• High automation reducing manpower requirements

• Stable long-term operational performance

• Strong environmental compliance for airport infrastructure