YIHUA Mexico Industrial Wastewater Treatment System

1. Project Background

YIHUA Environmental Protection delivered a customized industrial wastewater treatment system for a leading automotive component plant in Monterrey, Mexico. The solution ensures compliance with SEMARNAT and USMCA standards, enabling water recycling and sustainable production.

Client Background

The client, a key metal surface treatment supplier to North American automakers, faced 80m³ daily wastewater discharge containing heavy metals and organics. Outdated equipment risked regulatory penalties, leading them to select YIHUA for its expertise and cost-effective solutions.

2. Core Challenges

Strict Compliance: Meeting Mexico’s heavy metal removal (>99.5%) and COD (<50mg/L) limits, plus USMCA export requirements.

Variable Water Quality: Adapting to fluctuating production batches.

Space & Climate: Compact design for limited facility space and corrosion resistance in Mexico’s arid climate.

Water Scarcity: Prioritizing recycling to reduce reliance on municipal water.

3. Solution

YIHUA implemented a multi-stage process: Grating → Equalization → Coagulation Sedimentation → UF → RO → Reuse. The core inclined plate sedimentation tank (shown in the image) and intelligent dosing system drive heavy metal removal.

Key features:

Compact Skid-Mounted Design: 30% smaller footprint than traditional systems.

Intelligent Dosing: Automated chemical adjustment for optimal efficiency and reduced waste.

Corrosion Resistance: High-grade materials for durability in harsh conditions.

70% Water Recycling: Treated water reused for production rinsing and cooling.

4. Project Outcomes

• Timeline: 4-week design, 8-week manufacturing, 3-week installation/commissioning, with full SEMARNAT approval.

• Performance: Effluent heavy metals <0.1mg/L, COD 38mg/L; 16,000m³ annual water savings, 40% cost reduction, 99.8% system uptime.

• Recognition: Client honored by Nuevo León State Environmental Agency for sustainable practices.

5. Client Testimonial

“YIHUA’s system ensures regulatory compliance and delivers tangible cost savings through water recycling. Their expertise and support have been exceptional.”— Juan Carlos García, Operations Director, Mexican Automotive Component Manufacturer