Water & Wastewater Treatment Equipment Manufacturer
Company

Founded in 2010, Longdai specializes in water treatment and wastewater treatment equipment and engineering solutions. Our business covers technical R&D, process and system design, complete equipment manufacturing, engineering, procurement, and construction (EPC), installation and commissioning, and after-sales service. We supply standalone equipment, complete treatment systems, and engineering solutions, configured to each project's influent quality, treatment volume, discharge requirements, and site conditions.

Integrated Capabilities
From Engineering Insight to Equipment Delivery

Longdai connects R&D, engineering, manufacturing, and project services to support customers from initial technical discussions through equipment delivery and project implementation.

    • In-house R&D Technical development focused on water treatment equipment and process improvement.
    • Process & System Design Engineering planning and system design aligned with project requirements.
    • Equipment Manufacturing Manufacturing support for individual machines and integrated treatment systems.
    • EPC & Project Services Coordinated support for equipment delivery and project implementation.
Equipment for Multiple Stages of Water Treatment
Core Equipment Portfolio
Equipment for Multiple Stages of Water Treatment

Longdai has developed a comprehensive portfolio for water treatment equipment, covering multiple stages such as pretreatment, screening equipment, grit removal equipment, dissolved air flotation (DAF) systems, clarifier and sludge collection equipment, sludge dewatering equipment, biological treatment equipment, advanced water treatment equipment, as well as the supporting conveying and chemical dosing systems. Our range includes mechanical screens, hydraulic screens, grit-water separators, DAF dissolved air flotation systems, CAF induced air flotation systems, center-drive and peripheral drive sludge scrapers, traveling bridge scraper machines, chain-type sludge scrapers, belt filter presses, decanter centrifuges, disc stack centrifuges, cloth media disc filters, biological treatment equipment, ultrafiltration (UF) water treatment systems, reverse osmosis (RO) systems, and integrated wastewater treatment equipment.

R&D and Engineering Support
Technical Collaboration Throughout the Project

Longdai continues to invest in technical development and university-industry collaboration, focusing on water treatment equipment, process optimization, and related solutions. Our R&D and engineering teams support system planning, solution design, technical consultation, and training.

    • Laboratory Research
      Laboratory Research

      Research activities support technical development and process improvement.

    • Engineering Design
      Engineering Design

      Design and modeling help translate project requirements into engineering plans.

    • Project Coordination
      Project Coordination

      Teams coordinate technical considerations across project stages.

    • Technical Consultation
      Technical Consultation

      Direct discussions help align equipment and engineering with project needs.

Manufacturing Built Around Project Requirements
Manufacturing Capabilities
Manufacturing Built Around Project Requirements

Longdai specializes in water and wastewater treatment equipment manufacturing. From metal fabrication and large-component welding to equipment assembly and on-site operations, each stage contributes to the delivery of treatment equipment and integrated systems.

  • Manufacturing Built Around Project Requirements
  • Manufacturing Built Around Project Requirements
  • Manufacturing Built Around Project Requirements
Working with Global Partners to Build a Cleaner Water Environment
Global Service
Working with Global Partners to Build a Cleaner Water Environment

Longdai Environmental Protection serves markets across Asia, Europe, North America, South America, and Africa. With projects in more than 50 countries and regions and over 1,000 projects completed, the company provides water treatment equipment and engineering services to overseas EPC contractors, municipal water utilities, petrochemical companies, and industrial clients.