Rainwater Harvesting and Reuse

Rainwater Harvesting and Reuse
  • Rainwater Harvesting and Reuse
    Pre-treatment
  • Rainwater Harvesting and Reuse
    Storage
  • Rainwater Harvesting and Reuse
    Filtration and Disinfection
    • Rainwater Harvesting and Reuse
    • Process flow
      The rainwater harvesting process involves first flush diversion, followed by coagulation, filtration using multimedia filters, and disinfection through sodium hypochlorite dosing and UV disinfection systems. This multi-step process ensures the rainwater is clean and safe for reuse
    • Pre-treatment
      Before entering the storage tank, rainwater undergoes sediment separation or coarse filtration to remove larger debris and impurities, ensuring efficient and effective treatment downstream
    • Storage tank design
      Storage tanks and clean water tanks are designed with overflow and ventilation pipes, and include measures to prevent insect contamination. This ensures the stored water remains clean and safe for use
    • Material considerations
      For tanks located under motor vehicle lanes, reinforced concrete is typically used due to its durability and strength. For tanks under non-motor vehicle lanes, lighter PP modules can be used, providing flexibility and ease of installation
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    Case Study

    Rainwater Harvesting and Reuse - Shanghai Flower Expo
    At the Shanghai Flower Expo, we installed a rainwater collection system that gathers 50,000 cubic meters from the Fuxing Pavilion roof and 30,000 cubic meters from outdoor areas. The system includes modules with a capacity of 3,400 cubic meters and two purification units treating 50 cubic meters per hour. The reclaimed water is used to irrigate 400,000 m², covering the core flower area, Century Pavilion, and Fuxing Pavilion surroundings.

    • RRainwater Harvesting and Reuse - Shanghai Flower Expo
    • RRainwater Harvesting and Reuse - Shanghai Flower Expo
    • RRainwater Harvesting and Reuse - Shanghai Flower Expo
    • RRainwater Harvesting and Reuse - Shanghai Flower Expo
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    Why Choose ECH
    • Each year, we produce 200 rainwater and greywater collection systems, 150 wastewater reuse and treatment systems, 150 water purification systems, 100 swimming pool systems, 1,400 automatic dosing systems, 700 other water treatment systems, and 30,000 tons of water treatment chemicals.
    • Our strong R&D and production capabilities have earned us many accolades, including national high-tech enterprise status, recognition as a Shanghai innovative enterprise, and a top 100 private technology company in Shanghai for tax contributions.
    • We manage over 100 third-party environmental pollution control facilities and provide comprehensive water treatment solutions to over 2,000 clients, including more than 128 Fortune 500 companies.
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