- Qingqingquan
- Shandong
- 20 days
- 300 units per month
Discover how UF+RO systems achieve 99.9% microplastic removal from wastewater. Case study shows 10 million tons/year water savings.
Solutions for Municipal Wastewater Resourcing and Recycled Water Utilization
I. Status quo and policy requirements of the municipal wastewater treatment industry
Policy-driven market opportunities
1. Market size: expected to reach 1.55 billion yuan in 2025 (annual growth rate of 6.5%)
2. Policy requirements:
• The 14th Five-Year Plan calls for a municipal wastewater treatment rate of >95% by 2025.
• Recycled water utilization rate target: water-scarce cities >25
3.Emerging Challenges:
• Emerging pollutants such as microplastics/drug residues
• Industrial water demand continues to grow
Data support: a second-tier city reclaimed water project return on investment of 12% / year.
II. Dual-membrane (UF+RO) core technology advantages
Subheading: why choose membrane deep treatment?
1. Pollutant removal capacity:
• RO membrane (0.1nm) can intercept microplastics (1μm-5mm)
• Drug residue removal rate>99.5%
2. Water quality guarantee:
• The effluent meets the standard of Water Quality for Industrial Use of Recycled Municipal Wastewater
• Turbidity <0.1NTU, SDI <3
3. Economy:
• Running cost is 30% lower than traditional process
• 40% reduction in floor space
Process comparison table:
| Indicators | Dual-membrane method | Sand filtration + disinfection |
|---|---|---|
| Microplastic removal | >99.9% | <30% |
| Cost of ton of water | 0.17–0.21 USD | 0.25–0.31 USD |
| Degree of automation | Fully-automatic | Semi-automatic |
III. Successful case: New District Reclaimed Water Project
The practice of 10 million tons of annual water saving
1. Project Background:
• Daily treatment scale 50,000 tons
• Raw water contains drug residues (50-100ng/L)
2. Solution:
• UF pretreatment (pore size 0.03μm)
• RO fine treatment (recovery rate of 75%)
• Intelligent dosing system
3. Implementation effect:
✅ Replacement of 10 million tons of fresh water per year
✅ Reduction of industrial water costs by 40%
✅ Awarded the "National Water Saving City" case.
Process flow : Municipal sewage → UF → RO → industrial water
IV. Equipment Selection and Implementation Points
3 Key Decision Factors
1. Membrane module selection:
• UF: PVDF material, flux>50LMH
• RO: anti-pollution composite membrane
2. Intelligent control system:
• Online monitoring of SDI/trans-membrane differential pressure
• Automatic backwash function
3. Modularized design:
• Support 5-10 million tons/day phased construction
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