Case Study: StormBreaker 45T Blue Stormwater Solutions Accumulation  Reuse System at Yuexiu Xingke Yuanqi (Under Construction)

Guang ShenZhen Industrial Park, Guangming District, Shenzhen, Guangdong Province

1. Project Overview

1.1 Basic Project Information

• Project Name: Yuexiu Xingke Yuanqi (Guang Sheng Industrial Park Urban Renewal Project)
• Location: Intersection of Guangqiao Road and Kexue Avenue, Xinhu Subdistrict, Guangming District, Shenzhen, Guangdong Province
• Project Phase: Under construction (Phase 1 expected to be delivered in H1 2028)
• Total Site Area: ~289 m²
• Total Gross Floor Area: ~700 m²
• Development Scale: 10 residential buildings (including 1 public rental housing building) + 1 kindergarten with 18 classes
• Core Green Initiative: StormBreaker modular rainwater harvesting, treatment, and reuse system (sponge city & water recycling demonstration)

1.2 Regional & Policy Background

• Shenzhen’s Strategic Goals: Achieve >80% reclaimed water utilization rate by 2026; implement 100 million m³ of tap water substitution via recycled water
• Guangming District’s Role: National pilot zone for full-scope reclaimed water utilization; municipal miscellaneous water reuse rate >95%
• Policy Drivers: Compulsory sponge city design for new developments; subsidies for rainwater recycling systems.

2. System Introduction: StormBreaker Stormwater Management Modules

2.1 Product Definition & Certification

• Core Certification: CIRIA C737 & CIRIA C680 (UK industry standard for underground water storage)
• Void Ratio: 95% (extremely high storage efficiency)
• Material: Recyclable polypropylene (PP)
• Service Life: 50+ years (structural creep tested)
• Load Capacity: Supports H10–H20 traffic loads (pedestrian, light/heavy vehicle areas)
  

2.2 Core Technical Advantages

1. Modular & Flexible: Stackable PP modules; customizable layout to fit underground spaces (basements, greenbelts).
2. High Void Ratio: 95% void space maximizes rainwater storage vs. traditional concrete tanks.
3. Lightweight & Quick Install: ~1/10 the weight of concrete; reduces structural load and shortens construction time.
4. Corrosion Resistant: Anti-acid/alkali; no leakage or degradation; maintenance-free for long-term operation.
5. Eco-Friendly: 100% recyclable; reduces carbon footprint vs. concrete.
   

3.1 Catchment Area & Water Balance

• Total Catchment Area: ~28,000 m²
  • Roof catchment: ~18,000 m² (primary clean source)
  • Hardscape (roads, plazas): ~7,000 m²
  • Permeable pavements & green areas: ~3,000 m²
   
• Annual Rainfall Capture: ~21,000 m³ (based on Shenzhen’s average annual rainfall: 1,933 mm)
• Target Reuse Rate: ≥95% of captured rainwater

3.2 Full Process Flow: Collection → Treatment → Storage → Reuse

Stage 1: Pre-Treatment & Initial Rainwater Diversion

• Roof Rainwater: Gutters → leaf filters → initial rainwater diverter (discards first 2–3 mm of polluted runoff) → sediment chamber.
• Surface Runoff: Permeable pavements/grass swales → grit chambers → oil-water separators (for parking areas).

Stage 2: Underground Storage (StormBreaker Module)

• Installation Location: Underground green spaces and basement buffer zones (no aboveground footprint).
• Total Storage Volume: 1,200 m³ (using StormBreaker modules).

Structure: Waterproof geomembrane-wrapped modular tank; equipped with overflow pipes connected to municipal storm drains.

Stage 3: Advanced Purification

• Treatment Train:
  1. Multi-media filter (removes suspended solids)
  2. Activated carbon filter (adsorbs organics, odor, color)
  3. Ultraviolet (UV) disinfection (inactivates bacteria/viruses)

Stage 4: Smart Distribution & Reuse

• Smart Pumping Station: Variable-frequency drive (VFD) booster pumps; IoT monitoring (water level, quality, flow).
• Reuse Network: Dedicated pipe system separate from potable water.
• End Uses:
  • Landscape irrigation (60%)
  • Road cleaning & street washing (25%)
  • Firefighting reserve & landscape water replenishment (5%)
   

3.3 Sponge City Synergy

• Combined with permeable pavements, bioretention ponds, and green roofs
• Reduces peak storm runoff by ~40%; mitigates urban flooding.
• Removes ~40% of runoff pollutants (SS, COD, nitrogen/phosphorus) before infiltration.

4. Performance, Benefits & Outcomes

4.1 Water-Saving & Economic Benefits

• Annual Tap Water Savings: ~13,650 m³
• Annual Cost Reduction: ~RMB 95,000 (at Shenzhen’s non-residential water rate: ~RMB 6.95/m³)
• Payback Period: ~6–7 years (including equipment, installation, O&M)

4.2 Ecological & Carbon Reduction Benefits

• CO₂ Emission Reduction: ~2.05 tons/year (0.15 kg CO₂ per m³ of reused rainwater)
• Groundwater Recharge: ~3,200 m³/year via infiltration
• Urban Heat Island Mitigation: Green infrastructure + irrigation lowers ambient temperature by 1.5–2°C

4.3 Social & Demonstration Value

• Guangming Science City Model: Integrates sponge city, water recycling, and low-carbon development
• Industrial Park Upgrade: Transforms old Guang Sheng Industrial Park into a green, smart, livable community.
• Policy Compliance: Meets Shenzhen’s mandatory sponge city and water-saving requirements

5. Key Challenges & Solutions

5.1 Space Constraints (High-Density Development)

• Challenge: Limited underground space in high-rise residential complex.
• Solution: StormBreaker’s high void ratio (94%) minimizes footprint; installed under landscape areas to avoid structural conflicts.

5.2 Water Quality Stability (Urban Runoff Pollution)

• Challenge: Variable influent quality (roof/surface runoff).
• Solution: Multi-stage pre-treatment + automatic backwashing filters + UV disinfection ensures consistent reuse quality.

5.3 O&M Complexity

• Challenge: Long-term stable operation for a large residential development.
• Solution: Smart IoT platform (remote monitoring, auto-alerts, predictive maintenance); simplified design for property management.

6. Conclusion & Industry Implications

• Water security: Reduces reliance on municipal water by 15–20% for non-potable use.
• Flood resilience: Enhances urban stormwater management.
• Sustainability: Lowers carbon emissions and supports ecological balance.