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Welcome to Qingdao Conqinphi Environmental Technology Group Co., Ltd. – a professional manufacturer established in 2015 with a 10,000-30,000 m² factory and over 200 skilled employees. Our Salt Separation Equipment for Wastewater Treatment Zero Liquid Discharge (ZLD) Technology is engineered to help industries achieve complete water recovery and zero brine discharge, complying with the strictest environmental regulations. By integrating advanced evaporation, crystallization, and membrane separation processes, this system transforms challenging wastewater into reusable water and solid salt, reducing your operational costs and environmental footprint.
Our ZLD solution is the result of years of R&D and field experience, serving clients across North America, Europe, Southeast Asia, and the Middle East. With an annual export value of US$10-50 million, we have built a reputation for reliable, high-efficiency equipment. Below you will find detailed technical specifications, key features, and answers to common questions.
Key Features & Technical Specifications
- High Efficiency Salt Separation: Utilizes multi-effect evaporation (MEE) or mechanical vapor recompression (MVR) to concentrate brine up to 20-25% solids, followed by a crystallizer for solid salt recovery.
- Zero Liquid Discharge: All wastewater is treated; no liquid effluent is discharged – only clean distillate and dry/ moist salt byproduct.
- Advanced Membrane Pre-Treatment: Optional reverse osmosis (RO) or nanofiltration (NF) stages to reduce energy consumption and improve overall recovery.
- Corrosion-Resistant Materials: Main contact parts are SS316L, duplex stainless steel, or titanium, ensuring long service life even in high-chloride environments.
- Fully Automatic PLC Control: Real-time monitoring of temperature, pressure, flow rate, and conductivity; automatic adjustment for optimal performance.
- Modular & Scalable Design: Systems can be customized from small pilot units (1 m³/h) to large industrial plants (100 m³/h+), with skid-mounted or containerized options.
- Low Energy Consumption: MVR technology reduces energy usage by up to 60% compared to traditional evaporation, lowering operating costs.
- Easy Maintenance: CIP (clean-in-place) system included; accessible design for quick inspection and cleaning.
| Parameter | Value |
| Feed Water TDS (max) | 100,000 mg/L (higher on request) |
| Recovery Rate | 95% – 99% (depending on water chemistry) |
| Distillate Quality | TDS < 50 mg/L, conductivity < 100 µS/cm |
| Solid Salt Purity | ≥ 90% (further purity achievable) |
| Operating Temperature | 60°C – 120°C (depending on method) |
| Power Consumption | 30 – 80 kWh/m³ of treated water (MVR) |
| Control System | Siemens or Mitsubishi PLC, remote monitoring compatible |
Detailed Product Advantages
1. True Zero Liquid Discharge – Meet Regulatory Compliance
Government regulations worldwide are tightening on industrial wastewater. Our ZLD system eliminates liquid waste, helping you avoid fines and protect the environment. The solid salt produced can often be reused or sold as a byproduct, turning waste into value.
2. Energy-Efficient MVR Technology
Mechanical vapor recompression uses a compressor to recycle latent heat, dramatically reducing energy consumption. Compared to traditional single-effect evaporation, our system saves up to 60% energy, making ZLD more economically viable.
3. Robust Construction for Harsh Conditions
High chloride and sulfate concentrations demand corrosion-resistant materials. We use duplex stainless steel, titanium, and special coatings to ensure equipment longevity even in the most aggressive brine environments.
4. Customizable Integration
Whether you need a stand-alone salt separation unit or a complete wastewater treatment plant, our engineering team can design the system to match your existing infrastructure. Options include pre-treatment (softening, deaeration, membrane concentration), post-treatment (salt drying, packaging), and hybrid configurations.
5. Proven Track Record Across Industries
Our equipment is successfully deployed in chemical plants, pharmaceutical factories, textile dyeing mills, mining operations, and power plants. Each project receives tailored process design, installation supervision, and commissioning support.
Trust & After-Sales Service
Qingdao Conqinphi Environmental Technology Group Co., Ltd. is a certified manufacturer holding ISO9001, ISO14000, OHSAS18001, and other management system certifications. Our factory spans over 10,000 m² with a dedicated R&D team of 30+ engineers. We offer comprehensive after-sales support including 1-year warranty, remote technical assistance, spare parts availability, and optional on-site training. With a strong export history to 5 continents and annual export value exceeding US$10 million, you can trust us as a reliable partner for your ZLD needs.
Contact us today for a free consultation and customized proposal. Let our team help you achieve sustainable wastewater management with proven salt separation technology.
Frequently Asked Questions (FAQ)
-
Q: What is the typical salt recovery rate of your equipment?
A: Our system can recover over 90% of dissolved salts as solid crystals. The exact purity depends on the feed water composition and downstream processing, but we typically achieve ≥90% purity, which can be further upgraded with washing. -
Q: Can this equipment handle high-salinity brine (e.g., TDS > 100,000 mg/L)?
A: Yes, our salt separation equipment is designed for high TDS levels. We have successfully treated brine with TDS up to 200,000 mg/L. For extreme cases, we recommend a pre-concentration step or custom material selection. -
Q: What is the energy consumption per cubic meter of water treated?
A: For MVR-based systems, energy consumption ranges from 30 to 80 kWh/m³, depending on feed temperature, salinity, and desired recovery. Multiple-effect evaporation (MEE) systems consume more steam but have lower electrical needs. -
Q: How long does it take to install and commission the equipment?
A: Typical installation takes 2-4 weeks, followed by 1-2 weeks of commissioning. Our team provides on-site supervision and training. Smaller skid-mounted units can be shipped pre-assembled for faster setup. -
Q: Do you provide after-sales service and spare parts?
A: Absolutely. We offer a 1-year warranty, lifetime technical support, and a comprehensive spare parts inventory. Our service engineers are available for remote troubleshooting or on-site visits as needed. -
Q: Can the system be integrated with existing wastewater treatment plants?
A: Yes, our modular design allows easy integration. We can retrofit the salt separation unit after your existing biological or chemical treatment process. Our engineers will conduct a site survey to ensure compatibility. -
Q: What certifications does your company hold?
A: Our company is certified under ISO9001, ISO14000, OHSAS18001, and other management standards. Specific product certifications can be provided upon request. We also comply with international standards for export. -
Q: What is the minimum order quantity (MOQ) and delivery time?
A: MOQ is one unit, and delivery time depends on the capacity and customization. Typically, standard systems are delivered within 60-90 days after order confirmation. Please contact our sales team for a precise quote.
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