Longking EnTech Europe supplies Ozone Generators System for Madin II Drinking Water Treatment Plant in Mexico
Madín II Drinking Water Treatment Plant (Mexico): Commissioning of a Dry-Air Ozone Generation System with NLO Ozone Generators
The Madín II project in Mexico is aimed at expanding drinking water treatment capacity to supply the Metropolitan Zone of the Valley of Mexico (ZMVM)—a region where reliability, consistent performance and safe operations are essential.
Longking EnTech Europe (formerly Newland EnTech Europe) was awarded the installation and commissioning of an ozone generation system for the Madín II Drinking Water Treatment Plant (DWTP). This reference strengthens our presence in Mexico and demonstrates our capability to deliver robust, utility-grade ozone systems engineered for long-term operation.
Project Scope and Objective
The project “Design, Construction and Stabilization of the Madín II Water Treatment Plant Project, Pumping Plants and Conduction Lines” focuses on increasing the plant’s production of treated water to serve a larger population within the ZMVM area.
Ozonation was implemented as part of the treatment strategy to support water quality optimization through a controlled oxidation step integrated into the plant process.
Ozone Generation Plant from Dry Air (Turnkey Delivery)
Longking EnTech Europe supplied a complete ozone generation plant operating on dry air. The system is based on two high-efficiency NLO series ozone generators, designed for municipal drinking water applications where stable production, safety, and energy performance are critical.
Installed Ozone Capacity
2 × ozone production units, each rated at 7.5 kg/h
Total installed ozone production: 15 kg/h
Inside the generators, oxygen contained in the dry air feed gas is converted into ozone using high-voltage, high-frequency silent electric discharge, a proven method for industrial ozone generation.
NLO Ozone Generators — Why the Platform Matters
For drinking water projects, an ozone generator is not just a “machine producing O₃”: it is a controlled industrial system that must operate safely, efficiently and predictably under continuous duty.
The NLO series used in this project integrates engineering features that matter in real municipal operations:
Dielectric protection systems to support reliable long-term operation
Advanced energy consumption control to optimize operating cost
Instrumentation designed for stable monitoring and plant integration
UV Spectrophotometer Control Loop
Each ozone generator incorporates a UV spectrophotometer, enabling a closed-loop regulation strategy. This supports stable ozone production and helps optimize energy consumption, contributing to reduced operating costs while maintaining process requirements.
Feed Gas Preparation — Compression and Air Treatment
Feed-gas quality is a key driver of ozone system stability. The installation includes two complete compression and air treatment systems to ensure that the feed gas meets stringent requirements for ozone generation.
The resulting air stream is dry and filtered before entering the ozone production units—supporting consistent generator performance and reducing operational variability.
Thermal Management — Closed-Circuit Cooling
Because ozone production is an exothermic process, the system incorporates two closed-circuit cooling systems to dissipate heat and support the long-term durability of construction materials and electrical components.
This thermal control is essential for stable performance under continuous operating conditions.
Ozone Transfer to Water — Contact Chambers and Diffusers
The generated ozone is sent to the contact chambers, where it is transferred into the water using high-efficiency porous dome-type diffusers.
In municipal drinking water plants, effective contacting is a major determinant of real process performance: transfer efficiency and mixing directly affect how much ozone is delivered to the water phase.
Off-Gas Treatment — PLC-Controlled Ozone Destruction
To safely handle undissolved ozone, the system incorporates catalytic thermal ozone destructors governed by PLC, enabling structured process control and safe operation.
The destruction systems include:
air preheating and temperature control components designed for humid ozone gas environments, supporting long-term durability
an outdoor-ready construction approach allowing installation and operation without dedicated housing
a demister / droplet separator
under- and over-pressure protection valves
Plant Safety — Detection, Shutdown and Emergency Ventilation
Safety is fundamental in ozonation. The ozonation building is equipped with modern ozone leak detection systems.
In the event of an ozone gas leak, the system triggers automatic shutdown and activates a set of air extractors designed to evacuate the entire room volume within seconds—supporting operator protection and safe maintenance practices.
Conclusion — A Strong Reference for the Mexico Market
This Madín II reference demonstrates a complete municipal ozonation package: dry-air generation, NLO high-efficiency ozone generators with UV-based control loops, feed-gas preparation, robust cooling, efficient diffusers for transfer, PLC-controlled ozone destruction, and a comprehensive safety architecture.
It reinforces Longking EnTech Europe’s capability to deliver reliable, engineered ozone generator systems for drinking water treatment in Mexico and international markets.
For more information about this reference project or about NLO ozone generators and turnkey ozone systems for drinking water treatment, please contact our technical and commercial team: