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Welcome to Qingdao Conqinphi Environmental Technology Group Co., Ltd. – a leading manufacturer established in 2015, with a factory spanning 10,000–30,000 square meters and a dedicated team of 201–300 professionals. Our Multi-effect Evaporation Crystallization Equipment for Chemical Wastewater Zero Liquid Discharge represents the pinnacle of efficient, reliable, and sustainable wastewater treatment technology. Designed to tackle the most challenging industrial effluents, this system achieves near-zero liquid discharge (ZLD) while recovering valuable water and minimizing waste volume. Built on years of engineering expertise and backed by annual export values exceeding US$10 million, our equipment is trusted by clients across North America, Europe, Asia, and beyond.
This advanced evaporation crystallization unit integrates multiple effects to maximize energy efficiency – each effect uses the vapor from the previous stage as a heating source, dramatically reducing steam consumption. The system is specifically engineered for chemical wastewater containing high concentrations of dissolved solids, heavy metals, and organic compounds. By combining multi-effect evaporation with forced circulation or falling film technology, we achieve stable operation even under fluctuating feed conditions. The result is a robust, low-maintenance solution that meets the strictest environmental discharge standards while lowering operational costs.
Key Features & Technical Specifications
- Multi-Effect Design: Typically 3–6 effects, each recovering latent heat to reduce overall energy consumption by up to 60% compared to single-effect evaporators.
- Zero Liquid Discharge Capability: Crystallizes all dissolved solids into dry, disposable salts; recovered water meets reuse quality (e.g.,
- Material Options: Constructed from corrosion-resistant alloys such as 316L stainless steel, titanium, or duplex steel – customizable based on wastewater chemistry.
- PLC & HMI Control: Fully automated operation with real-time monitoring of temperature, pressure, flow rate, and liquid level. Remote access and data logging available.
- Energy Flexibility: Operates with low-pressure steam (0.3–0.8 MPa) or can be integrated with Mechanical Vapor Recompression (MVR) for even higher efficiency.
- Low Scaling & Fouling: Patented anti-scaling design with optional periodic cleaning cycles; forced circulation ensures uniform heat transfer.
- Compact Footprint: Skid-mounted modular construction simplifies transportation and installation, reducing on-site civil work.
| Parameter | Typical Range / Details |
|---|---|
| Evaporation Capacity | 10 – 200 m³/day (customizable) |
| Number of Effects | 3, 4, 5, or 6 (depending on feed concentration) |
| Operating Temperature (each effect) | 60–100°C (adjustable) |
| Steam Consumption | ~0.2–0.4 kg steam per kg water evaporated (for 4-effect system) |
| Power Consumption | 5–30 kWh/m³ (depending on configuration) |
| Final Crystal Moisture | < 5% (dry, free-flowing salt) |
| Recovered Water Quality | Conductivity ≤ 10 μS/cm, TDS < 10 mg/L |
| Control System | Siemens/Allen-Bradley PLC + Touchscreen HMI |
Benefits for Your Business
- Significantly Lower Operating Costs: Multi-effect heat recovery cuts steam consumption by 40–60% compared to single-effect evaporators. Optional MVR integration can eliminate external steam demand entirely.
- Compliance with Stringent Regulations: Achieve true zero liquid discharge – no wastewater discharge, no environmental fines. Recovered water can be reused in processes or cooling towers.
- Minimized Waste Disposal: The crystallized solids are dry and stable, reducing waste volume by up to 90% and simplifying disposal or even enabling by-product recovery.
- High Reliability & Uptime: Robust design with corrosion-resistant materials, anti-scaling features, and redundant safety systems ensures continuous operation with minimal maintenance.
- Scalability & Customization: Modules can be added or adjusted to match changing production volumes. Our engineering team tailors every system to the specific chemical composition of your wastewater.
- Global Support & Proven Track Record: With annual exports between US$10 million and US$50 million, we have delivered systems to 15+ countries. Our service network provides on-site commissioning, training, and remote diagnostics.
Why Choose Qingdao Conqinphi?
As a manufacturer with over 9 years of experience, we understand the critical nature of industrial wastewater treatment. Our equipment is designed and produced in-house under strict quality management systems compliant with ISO9001, ISO14000, and OHSAS18001 standards (certifications available upon request). We have successfully serviced clients in North America, South America, Europe, Africa, the Middle East, and Asia – many of whom are repeat customers. Our factory's 10,000–30,000 sqm facility enables efficient production and rapid delivery from Qingdao Port. Whether you need a single unit or a complete ZLD system, our team is ready to provide a tailored solution with full after-sales support.
Contact us today to discuss your wastewater challenges and discover how our multi-effect evaporation crystallization equipment can help you achieve zero liquid discharge while lowering your environmental footprint and operational expenses. We offer free feasibility studies and pilot testing for qualified projects.
Frequently Asked Questions (FAQ)
Q1: What type of wastewater is your equipment suitable for?
A: It is specifically designed for high-salinity chemical wastewater, including effluents from dye manufacturing, petrochemicals, pharmaceuticals, metal finishing, and landfill leachate. The system can handle TDS up to 200,000 mg/L and high organic loads. We recommend a lab analysis of your wastewater to confirm compatibility and optimize the design.
Q2: What is the typical energy consumption?
A: For a 4-effect system without MVR, steam consumption is approximately 0.25–0.35 kg of steam per kg of water evaporated. With MVR integration, the electrical consumption is about 30–50 kWh per m³ of water treated. Exact figures depend on feed concentration, temperature, and number of effects. Our engineers will provide a detailed energy balance for your specific case.
Q3: How do you prevent scaling and fouling in the evaporator?
A: We employ several anti-scaling measures: forced circulation design to maintain high flow velocity, controlled supersaturation, periodic acid or water washes, and optional seed crystal injection. The materials of construction are chosen to resist scaling and corrosion. Additionally, the PLC automatically monitors heat transfer coefficients and triggers cleaning when necessary.
Q4: What is the quality of the recovered water?
A: The condensed distillate typically has conductivity below 10 μS/cm and TDS less than 10 mg/L, making it suitable for reuse in cooling towers, boiler feed, or even process applications after polishing. Actual quality depends on feed composition and system configuration.
Q5: Do you provide installation and commissioning services?
A: Yes. Our service team can supervise installation and perform commissioning on-site. We also offer operator training and a 12-month warranty on mechanical parts. Remote monitoring and diagnostics are available for ongoing support.
Q6: Can the system be expanded if my wastewater volume increases in the future?
A: Absolutely. The modular design allows adding extra effects or parallel units. We design the base system with future expansion in mind – space for additional modules, spare piping connections, and control system scalability are included.
Q7: What certifications does your equipment hold?
A: Our manufacturing facility and processes are certified under ISO9001, ISO14000, OHSAS18001, and other management systems (full list available on request). Specific product certifications (e.g., CE, ATEX) can be arranged depending on the destination market – please inquire about your requirements.
Q8: How long does it take to deliver and install?
A: Typical lead time for a standard system is 8–12 weeks after order confirmation, depending on complexity. Installation and commissioning take 2–4 weeks on-site. We work closely with your team to ensure a smooth timeline from factory acceptance testing through final handover.
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