Explore Xinrui’s water treatment projects for pure water, reverse osmosis, ultrapure water, wastewater treatment, ZLD, reclaimed water reuse, and desalination applications across multiple industries.
June 24, 2026 This project is a 2 × 30 T/H demineralized water equipment project for Shandong Mingda Chemical, designed to provide stable high-quality demineralized water for chemical production and industrial process applications.
The system adopts a multi-stage treatment process, including integrated water purification, multi-media filtration, ultrafiltration, first-pass reverse osmosis, second-pass reverse osmosis, and EDI deep desalination. This configuration helps improve pretreatment stability, reduce membrane fouling risk, and produce high-quality demineralized water through step-by-step purification.
According to the provided project data, the final EDI product water resistivity is ≥15 MΩ·cm, silica is ≤20 μg/L, and the system production capacity is 2 × 30 m³/h. The complete system supports PLC automatic/manual switching operation.
1. Integrated Water Purification Pretreatment
The system uses an integrated water purifier as the first pretreatment stage. This section helps reduce suspended impurities and improve feed water stability before entering the downstream filtration and membrane treatment process.
2. Multi-Media Filtration and Ultrafiltration
After the integrated pretreatment section, water passes through multi-media filtration and ultrafiltration. These units further remove suspended solids, particles, colloids, and fine impurities, helping protect the reverse osmosis membranes and improve long-term system operation.
3. Two-Pass Reverse Osmosis
The system uses first-pass reverse osmosis and second-pass reverse osmosis as the main desalination process. The two-stage RO configuration helps remove dissolved salts and ionic impurities more effectively than a single-pass RO process.
4. EDI Deep Desalination
After two-pass RO treatment, the water enters the EDI system for deep desalination. EDI further removes residual ions and supports stable high-quality demineralized water production for industrial process use.
Water Reuse Design
The project includes internal water reuse arrangements to improve water utilization within the system.
This process design helps reduce unnecessary discharge and improves water resource utilization during system operation.
1. 2 × 30 T/H Production Capacity
The system is designed with a 2 × 30 m³/h capacity, supporting the customer’s industrial demineralized water demand.
2. Multi-Stage Pretreatment
Integrated purification, multi-media filtration, and ultrafiltration work together to improve inlet water quality before RO desalination.
3. Two-Pass RO + EDI Process
The combination of two-pass reverse osmosis and EDI provides deeper desalination and supports stable high-quality water output.
4. Low Silica Product Water
The provided final water quality target includes silica ≤20 μg/L, supporting applications that require better control of silica content.
5. Internal Concentrate Water Reuse
UF backwash water, RO concentrate water, and related streams are reused within the process where applicable, improving water utilization.
6. PLC Automatic/Manual Operation
The whole system supports PLC automatic/manual switching, helping operators manage system operation according to actual site needs.
This case provides a practical reference for chemical and industrial users requiring stable demineralized water production. By combining pretreatment, ultrafiltration, two-pass RO, concentrate recovery, and EDI polishing, the system supports stable water quality and efficient water resource utilization.
For chemical production facilities, demineralized water equipment must be configured according to water source conditions, final water quality requirements, system capacity, and long-term operation needs. This project shows how a staged process can help meet high-quality industrial water requirements.
This type of demineralized water system can be used for:
The Shandong Mingda Chemical 2 × 30 T/H Demineralized Water Equipment Project uses a complete treatment process of integrated water purification, multi-media filtration, ultrafiltration, two-pass reverse osmosis, concentrate recovery, and EDI deep desalination.
With 2 × 30 m³/h production capacity, EDI water resistivity ≥15 MΩ·cm, silica ≤20 μg/L, and PLC automatic/manual control, this project is a suitable reference for industrial customers seeking reliable deminalized water treatment systems for chemical and process water applications.
Tell us your water source, required capacity, target water quality, and application. Our team will help recommend a suitable water treatment solution.
We will reply to your inquiry within 24 hours. For urgent requests, please contact us via WhatsApp/WeChat at +86 13361112895, or call +86 13361112895 directly.
