3 td High-Strength Sodium Hypochlorite (10%-15%)
3 t/d membrane electrolysis NaClO generator producing 10-15% high-concentration sodium hypochlorite. Most popular model for medium municipal water plants and industrial facilities. 30-40% energy savings. CE, NSF, ATEX certified.
Product Details
3 t/d High-Strength Sodium Hypochlorite Generator – Overview
The QINGY 3 t/d high-strength sodium hypochlorite generator is our most popular model for medium-sized municipal water treatment plants and industrial facilities. Using advanced membrane electrolysis technology, it produces 10%–15% NaClO solution at a rate of approximately 3 kg/h (125 kg/h active chlorine equivalent), delivering reliable on-site disinfection with 30–40% lower energy consumption than conventional systems.
Technical Specifications
| Parameter | Value |
|---|---|
| Production Capacity | 3 tons/day (≈125 kg/h) of 10–15% NaClO |
| Active Chlorine Concentration | 10%–15% (100–150 g/L) |
| Electrolysis Method | Membrane cell electrolysis |
| Electrode Material | Titanium substrate with RuO₂/IrO₂ mixed metal oxide coating |
| Salt Consumption | ≈3.2 kg NaCl per kg Cl₂ produced |
| Power Consumption | ≈4.5 kWh per kg Cl₂ |
| Feed Water Requirement | Softened water (hardness <1°dH) at 2–4 bar |
| Cooling Method | Integrated plate heat exchanger with recirculating chilled water |
| Control System | PLC + 10″ HMI touchscreen, Modbus TCP/IP, optional 4G remote |
| Operating Temperature | 15–35°C ambient; electrolyte controlled at 25–40°C |
| Footprint | ≈10 m² (main skid: 4.5 × 2.2 × 2.4 m) |
| Weight (dry) | ≈2,500 kg |
| Certifications | CE, UL, IEC, NSF/ANSI 60, ATEX (optional) |
How the Membrane Electrolysis Process Works
QINGY’s membrane electrolysis technology separates the anode and cathode chambers with a selectively permeable membrane, producing high-purity NaClO with minimal chlorate byproduct (<5 g/L). The process involves four key stages:
- Brine Preparation: Food-grade salt dissolved in softened water to ~300 g/L NaCl saturation.
- Dilution & Filtration: Brine diluted to 2.5–3.5% and filtered to remove suspended solids.
- Electrolysis: DC current converts NaCl into NaClO. H₂ gas is safely separated and vented above roof level.
- Cooling & Storage: Product immediately cooled to <25°C and stored in UV-protected HDPE tank (3–5 m³ included).
Key Advantages of the QINGY 3 t/d System
- High concentration (10–15%): 3–5× stronger than non-membrane systems. Reduces storage volume by 60–80%.
- Low chlorate (<5 g/L): Product stability up to 30 days at high concentration, even in tropical climates.
- Energy savings: 4.5 kWh/kg Cl₂ vs 6–8 kWh/kg for non-membrane systems. Annual energy savings of $3,000–8,000.
- Full automation: PLC auto-start/stop based on tank level, automatic electrode cleaning cycle, self-diagnosis alerts.
- Remote monitoring: Optional 4G module provides real-time data (production rate, power, temperature, alarms) via web dashboard.
- Scalable design: Multiple 3 t/d units can be paralleled for larger installations (e.g., 3×3 t/d = 9 t/d total).
- Long electrode life: Premium electrode coating lasts 8–15 years before recoating is needed.
Typical Applications
- Municipal drinking water treatment (20,000–100,000 m³/d flow rates)
- Industrial process water disinfection (food & beverage, pharmaceutical)
- Cooling tower disinfection for power plants and data centers
- Wastewater treatment plant final effluent disinfection
- Hospital and healthcare facility water systems
- Livestock farm water disinfection and biosecurity
- Aquaculture water treatment and biosecurity
Installation Requirements
- Indoor installation in a well-ventilated equipment room
- Level concrete floor with floor drain and chemical-resistant coating
- Electrical: 380V/3Ph/50Hz, 63A breaker (or 220V/60Hz per region)
- Water supply: softened water at 2–4 bar, conductivity <500 μS/cm
- Ventilation: mechanical exhaust (min 10 air changes/hour) for H₂ safety
- Salt storage: dry, covered area for 1–2 tons of salt
- NaClO storage: 3–5 m³ HDPE tank included (or connect to existing tank)
Maintenance Schedule
| Frequency | Task |
|---|---|
| Daily | Check salt level, verify production output, inspect for alarms |
| Weekly | Clean brine tank sediment, inspect electrode surface condition |
| Monthly | Clean heat exchanger plates, verify dosing pump calibration |
| Quarterly | Full system inspection, check all valves and fittings |
| Annually | Replace wear parts (O-rings, gaskets, filter elements) |
| 8–15 years | Electrode recoating or replacement |
Comparison: QINGY 3 t/d vs. Conventional Systems
| Feature | QINGY 3 t/d (Membrane) | Non-Membrane 3 t/d | Delivered NaClO (10%) |
|---|---|---|---|
| Concentration | 10–15% | 0.3–0.8% | 10–12% (degrades) |
| Power per kg Cl₂ | 4.5 kWh | 6–8 kWh | N/A (transport) |
| Chlorate level | <5 g/L | 15–30 g/L | 10–20 g/L |
| Storage volume | Small | Very large | Large + degradation |
| Shelf life | 30 days | 3–7 days | 7–14 days |
| Operator needed | No (auto) | Partial | No |
| Chemical transport | None | None | Required (hazardous) |
FAQ
Can I install multiple units in parallel?
Yes. The 3 t/d model is designed for parallel operation. For example, a 100,000 m³/d water plant might install 3 units for redundancy (2 operating + 1 standby). The PLC systems can be linked for coordinated operation.
What happens if the power fails?
The PLC automatically saves all operating parameters. When power resumes, the system auto-restarts and resumes production. The stored NaClO in the tank provides continued disinfection during the restart period.
How does this compare to buying delivered chlorine?
On-site generation eliminates hazardous chemical transport, eliminates delivery costs, ensures fresh product (no degradation), and typically achieves 30–50% lower cost per kg Cl₂ over the system lifetime. Payback period is typically 18–36 months.
What support does QINGY provide?
We provide free system design consultation, remote commissioning support (video-guided), optional on-site installation supervision, 24/7 remote technical support, and lifetime spare parts availability. All systems come with a 1-year warranty on major components.