600m³ Sponge City Rainwater Harvesting Reuse System | BYD Zhengzhou Airport Zone Project

Zhengzhou Yayuan team assembling PP rainwater collection modules for rainwater harvesting system

Zhengzhou Yayuan Technology: Phase I of 600m³ Sponge City Rainwater Harvesting & Reuse System Project at BYD Zhengzhou Airport Zone Successfully Completed Zhengzhou, Sep 21, 2026 — Recently, Zhengzhou Yayuan Rainwater Utilization Technology Co., Ltd. (referred to as Zhengzhou Yayuan Technology) announced the milestone progress of its 600 cubic meters sponge city rainwater harvesting and […]

Rainwater Infiltration Channel —‑ Detailed Introduction for Sponge‑City Construction

PP plastic rainwater infiltration channel for sponge‑city underground stormwater drainage system

Rainwater infiltration channel is an effective underground storm‑water management facility widely used in sponge‑city construction. It collects surface runoff and seeps rainwater into surrounding soil to recharge groundwater, relieve municipal drainage pressure and purify stormwater. This guide explains its definition, components, types, core functions, key design points, applicable scenarios and maintenance precautions.

Construction Steps of PP‑module Rainwater Harvesting Tank

Underground PP rainwater tank module installation process

This article introduces the complete standard construction steps of PP module rainwater harvesting tanks, including site preparation, foundation treatment, module installation, sealing, pipeline layout, inspection, backfilling and daily maintenance. The professional installation guide ensures stable, leak-proof and long-term operation of underground rainwater collection and storage systems.

Infiltration Trench – The “Green Guardian” of Urban Flood Prevention

Rainwater infiltration trench for urban flood prevention and sponge city construction

The rainwater infiltration trench is an eco-friendly green facility for urban flood control and stormwater management. It effectively reduces urban waterlogging, replenishes groundwater, and delivers durable, cost-effective drainage solutions for municipal roads, residential communities, commercial parks and urban green spaces.

Standard Installation Process for Rainwater Infiltration Trenches

Wrapping infiltration trench with non-woven geotextile fabric for sediment filtration

The construction process for an infiltration trench involves planning, site preparation, trench excavation, base preparation, installation of infiltration cores, and backfilling. Key precautions include strict adherence to engineering standards, protection of utilities, material quality control, and safety measures. Testing ensures system integrity before operation.

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

Installation of backwashing pipes for Sponge City rainwater harvesting modules

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 […]

Urban Drainage Modes: Fast Drainage vs. Slow Drainage (Sponge Cities)

Comparison diagram of Fast Drainage Mode vs. Slow Drainage Mode in Sponge City design, showing technical pathways for annual runoff reduction, infiltration, evaporation, and collection using PP rainwater modules.

Urban Environments Under “Fast Drainage” vs. “Slow Drainage” Modes: The Evolution Toward Resilient Sponge Cities Urbanization has long served as a primary engine driving global economic growth. However, rapid economic development has intensified the friction between resource availability and environmental sustainability—most visibly manifested in the stark contradiction between severe urban water scarcity and the massive […]

What are Flow Channel Manholes and Silt Trap Manholes?

Yayuan durable plastic inspection manhole chamber for municipal drainage system

Plastic inspection manholes are essential components in modern drainage systems. Typically composed of a manhole base, a shaft (riser), and a protective or non-protective cover, they are widely used in residential communities and municipal drainage networks. Positioned at regular intervals, pipe intersections, or sharp turns, they allow maintenance teams to inspect and monitor the condition […]

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.