Why Backwashing Pipe Systems Are Crucial for PP Module Rainwater Retention Tanks in Sponge City Construction

In Sponge City construction, installing a backwashing pipe system in Polypropylene (PP) modular rainwater retention tanks is essential for ensuring long-term operational efficiency. Key reasons include: 1. Preventing Sedimentation and Clogging Stormwater runoff carries sand, silt, suspended solids, and other impurities into the retention tank. Over time, accumulated sediment reduces the tank’s effective storage capacity […]
Backwash Piping in Rainwater Harvesting PP Module Systems: A Self-Cleaning Revolution Leading Green Building Trends

As China comprehensively advances the construction of Sponge Cities, rainwater harvesting and reuse systems have become critical infrastructure for green buildings and eco-industrial parks. Among these, Polypropylene (PP) module reuse systems are highly favored for their high efficiency and durability. At the core of this system’s longevity is the backwash piping—the “self-cleaning heart” whose technological […]
Unlocking the Added Value of Rainwater Harvesting: Empowering Sponge Cities & Sustainable Eco-Development
![YAYUAN sustainable rainwater harvesting system process with modular PP storage tanks and water treatment system[cite: 1].](https://i0.wp.com/zzyayuan.com/wp-content/uploads/2026/07/%E9%9B%A8%E6%B0%B4%E6%94%B6%E9%9B%86%E6%95%88%E6%9E%9C%E5%9B%BE.webp?fit=800%2C622&ssl=1)
Published on: Global Water Infrastructure Portal • Industry Insights Category: Sustainable Urban Drainage Systems (SUDS) Rainwater harvesting and utilization has emerged as an increasingly prominent topic of global discussion in recent years. Water is intrinsically bound to our daily lives, regardless of whether a region is navigating a wet season or a drought. The core […]
Yayuan Sponge City Technology Shines at 2025 Zhengzhou Cross-Border E-Commerce Ecological Exchange

Zhengzhou Yayuan Sponge City Technology participated in the 2025 Zhengzhou Cross-Border E-Commerce Ecological Exchange, showcasing its rainwater harvesting, irrigation, and green infrastructure solutions for global markets. The company promoted an innovative model of “technology + products + remote services” through cross-border e-commerce, reaching cooperation intentions with local trade and logistics partners. Committed to sustainability and digital trade, Yayuan aims to expand its global presence and deliver China’s proven green solutions worldwide.
Yayuan Technology’s High-Load Blue PP Modules Shipped to Haikou, Boosting Hainan’s Sponge City Construction

Zhengzhou Yayuan Technology Co., Ltd. recently shipped a batch of high-load bearing blue PP modules to Haikou, Hainan, to support local sponge city construction. These modules are specially designed for high-load scenarios including parking lots, plazas and municipal roads. With high structural strength, excellent bearing capacity, corrosion resistance and long service life, the modules offer over 95% void space for efficient rainwater harvesting, storage, infiltration, purification and reuse. The solution effectively relieves urban waterlogging, promotes water recycling and adapts well to Hainan’s high-temperature and high-humidity climate. As a national high-tech enterprise, Yayuan Technology provides reliable stormwater management solutions for sponge city projects across China.