China's rapid urbanization has amplified the menace of rainwater runoff pollution, rendering it a pressing environmental predicament. Urban rainwater runoff pollution has emerged as a major water environment hazard in China, imperiling the country's water safety. Considering this, the quest for a viable solution to first rain purification has intensified. This article delves into an innovative primary rain purification technology—MABR technology—and explores its potential applications in China's primary rain purification domain.

Current Challenges

China's existing primary rain purification predominantly relies on conventional facilities like rainwater grates and sedimentation tanks, which suffer from several drawbacks. These conventional facilities inadequately eliminate pollutants such as suspended solids and organic matter, resulting in direct contamination of water bodies and deteriorating water quality. Moreover, they occupy substantial space, entail high construction costs, and pose maintenance challenges. Furthermore, traditional facilities exhibit limited rainwater resource utilization and fail to achieve significant rainwater reuse.

MABR: Addressing the Pain Points

MABR represents a novel wastewater treatment approach known for its efficiency, minimal resource consumption, and compact design. Leveraging biofilm, MABR technology effectively degrades and adsorbs pollutants in rainwater, thereby purifying it. Compared to conventional facilities, MABR technology offers several advantages:

• Efficient Pollutant Removal: Using the biofilm’s absorption and degradation capabilities, MABR can effectively achieve robust pollutant removal from stormwater runoff, thereby enhancing water quality.
• Low Energy Consumption: With MABR’s direct oxygen transfer characteristic, MABR reduces the need for extensive aeration, hence cutting operational costs.
• Compact Footprint: MABR equipment covers only a fraction of the space occupied by traditional facilities and MABR can be installed into the waterbody directly even in surface water, facilitating its widespread urban application.
• Ease of Maintenance: MABR equipment follows a modular design, doesn’t require washing or routine replacing of the membranes, ensuring ease of maintenance.

Advantages Over Other Technologies

Compared to existing primary rain purification methods, MABR technology demonstrates marked advantages. For instance, when contrasted with the activated sludge method, MABR technology surpasses in treatment efficiency, energy consumption, and space utilization. Additionally, MABR technology exhibits superior shock load resistance, adaptability, and stability across diverse regional and climatic conditions.

Real-World Applications and Future Prospects

In China, MABR technology has already found traction in the realm of initial rain purification. Notable implementations include the initial rain storage pond project in Suzhou by Hydroking Tech, and the deployment of MABR membrane systems in the Anhui Railway Canal. These practical applications have yielded high-efficiency, cost-effective first rain collection for subsequent utilization.

Looking ahead, the future trajectory of MABR technology in China's first rain purification includes equipment integration with other environmental protection technologies to achieve holistic and intelligent primary rain purification. Furthermore, there is a concerted effort to promote widespread adoption of MABR technology to bolster China's water environment management.

In conclusion, MABR technology, characterized by its high efficiency, low resource consumption, and minimal space requirements, presents significant promise for primary rain purification in China. As the technology burgeons and evolves, it is poised to make substantial contributions to China's water environment management.