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Qingdao Conqinphi Environmental Technology Group Co., Ltd., a leading manufacturer established in 2015 with a 10,000-30,000 m² factory and an annual export value of US$10-50 million, presents our advanced Sodium Sulfite Crystallization Evaporator. Designed specifically for wastewater treatment and chemical recovery, this system efficiently separates sodium sulfite from industrial effluents, enabling reuse of valuable chemicals while meeting stringent environmental standards. Our evaporator combines robust construction with intelligent control, making it a reliable choice for industries seeking sustainable and cost-effective solutions.
This equipment is engineered to handle high-concentration sodium sulfite solutions, utilizing forced circulation crystallization technology to achieve high recovery rates. Whether you are treating desulfurization wastewater, paper mill effluent, or chemical processing streams, our evaporator delivers consistent performance and minimal downtime. Backed by over 200 skilled employees and a strong export portfolio to markets across North America, Europe, Asia, and Africa, we ensure every unit meets global quality expectations.
Key Features & Technical Specifications
- Forced Circulation Crystallization – Ensures uniform crystal growth and prevents scaling, maximizing recovery efficiency.
- Corrosion-Resistant Construction – Made from 316L stainless steel, suitable for aggressive chemical environments.
- PLC Automatic Control System – Real-time monitoring of temperature, pressure, and flow, with remote operation capability.
- Energy-Saving Design – Integrated heat recovery and low specific energy consumption, reducing operating costs.
- Customizable Capacity – Available in processing capacities from 500 L/h to 5000 L/h, adaptable to your specific wastewater volume.
- Modular Structure – Easy to install, maintain, and expand for future capacity upgrades.
- High Purity Crystals – Produces sodium sulfite crystals with purity ≥95%, suitable for reuse in industrial processes.
- Low Maintenance – Anti-fouling design and self-cleaning options reduce manual intervention.
| Parameter | Specification |
|---|---|
| Evaporation Method | Forced Circulation |
| Material | 316L Stainless Steel (optional: Hastelloy, Titanium) |
| Processing Capacity | 500 – 5000 L/h (customizable) |
| Heating Source | Steam or Electrical (optional) |
| Control System | PLC + HMI, remote monitoring available |
| Crystal Purity | ≥95% (adjustable) |
| Energy Consumption | ≤0.8 kWh per kg of recovered salt (typical) |
| Operating Temperature | 60–120°C (customizable) |
Advantages for Your Business
- Reduce Chemical Purchase Costs – Recover up to 95% of sodium sulfite from wastewater, cutting raw material expenses.
- Meet Environmental Regulations – Achieve zero liquid discharge (ZLD) goals with minimal waste volume.
- Simple Operation – User-friendly PLC interface with automatic start/stop and alarm functions.
- Fast Return on Investment – Typical payback period of 12–18 months based on chemical savings.
- Global Support – Spare parts and technical service available from our Qingdao headquarters and local partners.
Trusted by Industries Worldwide
As a manufacturer with 201–300 employees and a factory spanning 10,000–30,000 m², Qingdao Conqinphi has delivered evaporation systems to over 30 countries. Our facility holds multiple certifications including ISO9001, ISO14000, OHSAS18001, and HACCP, ensuring consistent quality and safety. With an annual export value exceeding US$10 million, our machines are proven in demanding applications such as power plant desulfurization, chemical production, and textile printing. We maintain strict quality control from raw material inspection to final performance testing.
Choosing our Sodium Sulfite Crystallization Evaporator means investing in a solution that combines technical excellence with long-term reliability. Contact us today to discuss your specific wastewater parameters and receive a customized proposal. Our engineers are ready to assist with site evaluation, installation, and after-sales support.
Frequently Asked Questions (FAQ)
- What types of wastewater can this evaporator handle? – It is designed for sodium sulfite solutions, typically from flue gas desulfurization, papermaking, and chemical processing. It can also treat other sulfate/sulfite streams with minor adjustments.
- What is the typical recovery rate of sodium sulfite? – Under optimal conditions, the recovery rate reaches 90–95%. The final crystal purity is ≥95%, suitable for reuse in many industrial processes.
- How much energy does the system consume? – Energy consumption averages 0.6–0.8 kWh per kilogram of recovered salt, depending on inlet concentration and operating parameters. Heat recovery options further reduce usage.
- Is the system easy to operate and maintain? – Yes. The PLC control system automates the process. Regular maintenance includes cleaning the heat exchanger and inspecting pumps. Self-cleaning options are available for high-fouling streams.
- Can you customize the capacity for my plant? – Absolutely. We offer capacities from 500 L/h to 5000 L/h, and can design larger systems upon request. Please provide your wastewater flow rate and composition for a tailored solution.
- What certifications does your factory hold? – Our factory is certified with ISO9001, ISO14000, OHSAS18001, HACCP, and others. Each evaporator is tested according to these standards before shipment.
- What is the typical lead time and delivery terms? – Lead time is 45–60 days after order confirmation, depending on customization. We ship from Qingdao Port, and can arrange FOB, CIF, or DDP terms.
- Do you provide after-sales service and spare parts? – Yes. We offer a 12-month warranty, remote technical support, and a global spare parts network. Our team can also provide on-site installation supervision upon request.
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