Rural areas in Guiyang, China, have long faced significant challenges in treating domestic sewage. Due to complex terrain and dispersed villages, centralized treatment facilities are impractical, leading to the direct discharge of untreated wastewater and deterioration of local water environments. This not only threatens the health of residents but also hinders sustainable rural development.
In response to China’s Rural Revitalization Strategy and the national push for ecological progress, MOTIVA initiated a decentralized wastewater treatment project using its self-developed QDPP Integrated Wastewater Treatment Equipment. With a capacity of 200 m³/day and adopting a combined AO+MBR process, the system is tailored for rural deployment with low land use, high treatment efficiency, and low operational cost.
This project provides an innovative, replicable model for rural wastewater treatment, contributing significantly to environmental protection and community well-being.
Key Features:
The QDPP system is an all-in-one modular treatment unit developed by MOTIVA using high-performance polypropylene (PP) as the core structural material. Known for its excellent corrosion resistance and durability, the PP structure ensures a long service life even in harsh environments.
- Modular Design: Easy transport and rapid on-site installation
- Intelligent Automation: Remote monitoring and minimal manual intervention
- Energy-Efficient Operation: Lower electricity use and reduced operational costs
- Low Maintenance: Robust anti-corrosion design lowers maintenance frequency
Compared to traditional systems, the QDPP unit offers superior performance, lower footprint, and greater adaptability for decentralized rural applications.
AO+MBR Process Advantages
The core treatment process is based on a combination of AO (Anaerobic–Oxic) and MBR (Membrane Bioreactor) technologies, ensuring high-efficiency treatment in a compact form.
- Anaerobic–Oxic (AO): Utilizes alternating anaerobic and aerobic conditions to break down organic compounds and remove nitrogen and phosphorus.
- MBR Technology: Integrates membrane filtration with biological treatment to enhance effluent quality, ensuring solid-liquid separation with minimal sludge output.
The process flow involves:
- Anaerobic Hydrolysis in the initial tank
- Aerobic Nitrification in the subsequent tank
- Membrane Separation for final clarification
Additionally, the QDPP material itself exhibits photocatalytic properties, enhancing the breakdown of hard-to-degrade compounds. The result is Class A effluent quality, compact design, and minimal secondary pollution—ideal for rural residential sewage scenarios.
Project Execution and Performance
The implementation covered several key stages: site survey, system design, installation, and commissioning. Site selection considered terrain, sewage collection complexity, and ease of access for maintenance. The modular equipment enabled rapid deployment, reducing the overall project timeline.
During commissioning, operational parameters such as aeration levels and return ratios were optimized for stable long-term performance.
Monitoring results show that effluent consistently meets China’s Class A Discharge Standard for municipal wastewater, with removal rates for COD, ammonia nitrogen, and total phosphorus exceeding 90%. The system maintains high automation and requires minimal manual supervision—greatly lowering maintenance costs.
The project has successfully eliminated the direct discharge of sewage in the area, leading to visible improvements in local water quality and receiving strong support from local government and communities.
In conclusion, MOTIVA’s Guiyang rural wastewater treatment project demonstrates the powerful synergy of QDPP material innovation and AO+MBR process integration. The system offers a high-efficiency, low-maintenance, and space-saving solution for decentralized sewage management.
The project’s success highlights its applicability to other rural regions, providing a blueprint for scalable rural wastewater treatment across China. It not only improves living conditions but also contributes to national efforts in rural ecological restoration and sustainable development.
Ready to upgrade rural wastewater management in your region?Contact MOTIVA for customized solutions with proven results in challenging environments.
