QILEE Group has officially launched the QL-SWTP 900K Series Integrated Surface Water Treatment System, a comprehensive facility that can directly transform river or lake water—even with high turbidity and complex compositions—into premium industrial process water or potable municipal water.
With a total daily treatment capacity of 900,000 cubic meters, the QL-SWTP 900K integrates pre-treatment, gravity clarification, and advanced nanofiltration (NF) within a single, automated platform. This system is designed to support large-scale municipal water supply initiatives, water treatment plants for major industrial parks, river basin water quality improvement projects, and pre-treatment processes for brackish water desalination in saline-alkali areas.
Technical Architecture and Performance
The QL-SWTP 900K functions in a continuous, fully automated mode across three distinct processing zones:
- Zone 1: Pre-treatment: This first stage employs dual-powered rotary drum screens that achieve a filtration accuracy between 20 and 100 micrometers. An integrated, intelligent PAC/PAM proportional dosing system optimizes chemical usage.
- Zone 2: Gravity Clarification: Built for ultra-low operational expenses, this zone operates on a zero-energy gravity-flow principle, consuming no electricity. Each module handles 50,000 cubic meters per hour, eliminating more than 95 percent of suspended solids (SS) via natural settling.
- Zone 3B: Advanced Treatment: The final stage features a large-scale nanofiltration (NF) skid with a single-unit capacity of 300,000 cubic meters per day. This phase ensures highly efficient removal of total organic carbon (TOC), color, and multivalent ions. The NF technology guarantees stable, high-quality water output regardless of seasonal variations in raw river water.
Production, Deployment, and Automation
During the research and design phase, QILEE engineers refine the system’s sedimentation units using Computational Fluid Dynamics (CFD) simulations. All skid-mounted components are standardized, manufactured, and coated with specialized anti-corrosion finishes at QILEE’s digital factory. Prior to shipment, the equipment undergoes complete Factory Acceptance Testing (FAT) to ensure immediate plug-and-play functionality at the project location.
The modular, skid-mounted design enables swift deployment, cutting on-site installation time by roughly 60 percent compared to conventional concrete-based water treatment plants. For operations, the system supports fully automated PLC/DCS remote control and allows operators to monitor water quality in real time via mobile devices.
Target Markets and Field Validation
The QL-SWTP 900K Series is mainly aimed at municipal water utility groups, EPC contractors, large steel and chemical manufacturing facilities, and environmental engineering firms. Key geographic markets include large coastal industrial zones, Southeast Asia, Central Asia, and the Middle East—specifically major EPC infrastructure projects in Saudi Arabia and the United Arab Emirates (UAE).
This automated, energy-efficient design has already proven its effectiveness in the field. A project manager overseeing an overseas municipal water supply project commented: “QILEE’s gravity system has performed exceptionally well in remote areas. It not only saved significant electricity costs but also solved the challenge of limited local maintenance personnel through its fully automated design.”
About QILEE Group
QILEE Group is a worldwide leader in integrated water treatment solutions, bringing over 20 years of expertise in industrial and municipal water management. The company focuses on high-efficiency sedimentation technologies, membrane separation systems, and containerized mobile water treatment units. Serving clients in more than 50 countries and regions, QILEE is dedicated to tackling global water scarcity with innovative technologies.
Inquiries can be sent on WhatsApp at +86 13636655908.
Media Contact
Contact Person: Tina
Company Name: QILEE Environmental Protection Equipment Co., Ltd.
Email: tina@qileegroup.com
Phone: +86 13370035529
Website: qileegroup.com
Country: China


