Containerized Water Treatment Solution for Paper Manufacturing Industry
1. Project Overview (Project Case)
This project is a containerized industrial wastewater reuse RO system designed for a toilet paper manufacturing plant located in Chile.
The system treats and recovers wastewater generated from two internal industrial sources:
- Wastewater treatment plant effluent
- Liquid industrial waste treatment system effluent
Both streams are generated within the same facility and are combined as feedwater for advanced treatment and reuse.
The goal of this project is to enable stable industrial water reuse and reduce freshwater consumption in production processes.
2. Water Quality Challenges (Chile Industrial Water)
Based on the feedwater analysis, the main challenges include:
2.1 High Chloride Concentration
Chloride levels exceed reuse requirements, which may cause:
- Corrosion in pipeline systems
- Increased RO membrane scaling risk
- Reduced long-term system stability
2.2 Elevated Sulfate Levels
High sulfate concentration leads to:
- Scaling formation on RO membranes
- Reduced membrane efficiency
- Higher chemical cleaning frequency
2.3 Microbial Contamination Risk
One of the incoming streams (sewage-related effluent) contains fecal coliforms, which creates:
- High risk of biological fouling
- Biofilm formation in pipelines and membranes
- Potential regrowth of microorganisms in reuse water
👉 Therefore, pre-treatment disinfection before RO is essential.
2.4 Complex Dual-Source Wastewater
The system treats mixed wastewater from:
- Biological wastewater treatment plant
- Industrial liquid waste stream
This results in:
- Fluctuating feedwater quality
- High fouling risk
- Need for stable and robust pretreatment design
3. Guanya Containerized RO Solution
To solve these challenges, Guanya designed a 40ft containerized reverse osmosis water treatment system with full factory integration.
The system includes a complete multi-stage treatment process:
✔ Pre-treatment System
- UV disinfection unit (microbial control)
- Quartz sand filtration (suspended solids removal)
- Manganese sand filter (iron removal)
- Activated carbon filter (organic removal)
- 5-micron cartridge filtration (fine filtration)
✔ Chemical Dosing System
- Antiscalant dosing before RO system
- Prevents scaling caused by high sulfate and chloride levels
- Protects membrane performance and stability
✔ Reverse Osmosis System
- Industrial-grade anti-fouling RO membranes
- High rejection rate for salts and contaminants
- Stable operation under variable feedwater conditions
✔ Automatic Control System
- PLC intelligent control system
- Real-time monitoring of conductivity and pressure
- Automatic alarms and protection system
4. Water Treatment Process Flow
The complete treatment process is as follows:
Raw Water
→ UV Disinfection
→ Sand Filtration
→ Manganese Sand Filtration
→ Activated Carbon Filtration
→ Cartridge Filtration
→ Antiscalant Dosing
→ Reverse Osmosis System
→ Reuse Water Tank
5. Key Advantages of the System
✔ Containerized Plug & Play Design
Fully assembled in a 40ft container, no civil construction required.
✔ Stable Operation for Industrial Wastewater
Designed for high chloride, sulfate, and complex wastewater conditions.
✔ Strong Biological Control
UV disinfection ensures effective elimination of fecal coliforms before RO.
✔ Fully Automatic Operation
PLC control system enables 24/7 unattended operation.
✔ Low Maintenance Design
Anti-fouling membranes and optimized pretreatment reduce maintenance frequency.
6. Expected Water Treatment Performance
After treatment, the system achieves stable reuse water quality:
- Sulfate removal rate ≥ 97%
- Chloride removal rate ≥ 97%
- Iron removal efficiency ≥ 99%
- Turbidity ≤ 0.1 NTU
- Conductivity ≤ 50 µS/cm
- Fecal coliforms: not detected
The treated water can be reused for industrial production processes, cleaning systems, and internal water circulation.
7. System Configuration (40ft Containerized Design)
The system is fully integrated into a standard 40ft container including:
- Pretreatment zone
- RO membrane system zone
- Chemical dosing system
- PLC electrical control system
- CIP cleaning system
This modular design ensures fast installation and easy transportation.
8. Application Scope
This containerized RO system is suitable for:
- Paper manufacturing wastewater reuse
- Industrial recycling water systems
- Manufacturing plant water recovery
- High-salinity industrial wastewater treatment
9. Engineering Summary
This project in Chile demonstrates a high-salinity industrial wastewater reuse solution using containerized reverse osmosis technology.
The system is specifically designed to handle:
- High chloride and sulfate wastewater
- Biological contamination (fecal coliforms)
- Industrial process water reuse requirements
- Continuous 24-hour industrial operation
It provides a stable and reliable solution for industrial water recycling in paper production facilities, significantly improving water efficiency and reducing freshwater dependency.
