Reclaimed Water Reuse System: 2025 Water Resource Recycling Solution

Core Value of Reclaimed Water Reuse

✔ Water savings of 50-70% - alleviating urban water resource pressure

✔ Cost advantage - treatment cost of only $0.04 - 0.11/ton

✔ Policy support - key technology promoted by the state in the 14th Five-Year Plan

✔ Environmental benefits - reducing sewage discharge

Industry Data: China's graywater reuse rate is projected to reach 25% by 2025 (Ministry of Housing and Urban-Rural Development plan)

Comparison of Three Treatment Technologies

1. Biological Treatment Method

 • Process: Activated Sludge Process/MBR Membrane Bioreactor

 • Advantages:

      Low operating costs ($0.028- 0.056/ton)

      COD removal rate >90%

 • Applications:

      Residential wastewater reuse

      Landscape water replenishment

2. Physical-Chemical Treatment Method

 • Process combinations:

      Coagulation sedimentation + activated carbon adsorption

      Ozone oxidation + BAF aerated biological filter

 • Features:

      Effluent turbidity <1 NTU

      Higher investment but smaller footprint

3. Membrane Treatment Technology

System Intelligent Control Functions

✅ Fully automatic operation - PLC intelligent control

✅ Water level interlocking - Automatic pump start/stop

✅ Intelligent chemical dosing - Precise metered addition

✅ Automated membrane maintenance - Scheduled backwashing/chemical cleaning

✅ Self-diagnosis of faults - Overload/leakage protection

Typical process flow

Raw water → Grating → Adjustment tank → MBR reactor → Ultrafiltration → Disinfection → Reuse

Note: Process combinations can be adjusted according to water quality

Application Scenarios and Water Quality Standards

1. Municipal Non-Potable Water

 • Applications: Toilet flushing/car washing/landscaping

 • Standard: GB/T 18920-2020

 • Key Indicators:

      BOD < 10 mg/L

      Turbidity < 5 NTU

2. Industrial Cooling Water

 • Process: Multi-media filtration + RO

 • Requirements:  

      Hardness <150 mg/L  

      Chloride ions <250 mg/L  

3. Landscape and Environmental Water  

 • Treatment Focus:  

      Phosphorus Removal and Nitrogen Removal  

      Algae Control  

Equipment Selection Guide  

Small-Scale Projects (<100 tons/day)  

 • Recommended Process: MBR Integrated Equipment  

 • Advantages:  

      Footprint of only 10-20 m²  

      Plug-and-play

Medium-sized projects (100–1,000 tons/day)

 • Recommended process: AAO + advanced treatment

 • Features:

      Stable operation

      Low capital investment per ton of water

Large-scale projects (>1,000 tons/day)

 • Optimal solution: Dual-membrane process (UF + RO)

 • Water Quality:

      Meets industrial pure water standards

Maintenance Points

🔧 Daily: Check membrane module pressure difference

🧴 Weekly: Chemical cleaning of membrane surface

💧 Monthly: Outflow water quality testing

🔄 Annual: Comprehensive maintenance and inspection

Professional Recommendation: Install an online water quality monitor for real-time monitoring

Free Resources Available

📞 Consultation: Obtain a customized solution