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Help CenterForced Circulation Wastewater Plate Evaporator, 1000L/H Capacity, Vacuum System for Zinc Oxide Recovery
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Welcome to Qingdao Conqinphi Environmental Technology Group Co., Ltd. We are a professional manufacturer specialized in industrial wastewater treatment and metal recovery solutions. Our Forced Circulation Wastewater Plate Evaporator, 1000L/H Capacity, Vacuum System for Zinc Oxide Recovery is designed to efficiently recover high-purity zinc oxide from zinc-containing wastewater streams. By combining forced circulation technology with a vacuum evaporation system, this unit offers superior heat transfer efficiency, reduced fouling, and lower energy consumption compared to traditional evaporators. Whether you are in the mining, electroplating, or chemical industry, this evaporator provides a reliable and cost-effective way to turn wastewater into a valuable resource.
Key Features and Advantages
Our evaporator stands out due to its robust design and advanced technical specifications. Below are the core features that deliver tangible benefits for your production process:
- Forced Circulation Design: A dedicated circulation pump ensures high flow velocity across the plate heat exchanger, minimizing scaling and crystallization on the heating surfaces. This extends operational cycles and reduces cleaning downtime.
- Vacuum System Integration: Operating under vacuum (-0.08 to -0.095 MPa) lowers the boiling point of the wastewater, allowing evaporation at lower temperatures. This not only saves energy but also prevents thermal degradation of zinc compounds, ensuring higher recovery purity.
- Plate Heat Exchanger: Corrugated stainless steel plates provide a large heat transfer area in a compact footprint. The plates are easy to inspect and replace, making maintenance straightforward.
- Automatic PLC Control: The system is equipped with a fully automated control panel that monitors temperature, pressure, flow rate, and liquid levels. Operators can set parameters and receive alarms, ensuring stable operation with minimal manual intervention.
- Anti-Corrosion Materials: All wetted parts are made of 316L stainless steel or higher-grade alloys, resistant to the corrosive nature of zinc-laden wastewater. This ensures long service life even under harsh chemical conditions.
Technical Specifications
| Parameter | Value |
| Evaporation Capacity | 1000 L/H (water basis) |
| Operating Temperature | 55 – 70 °C (under vacuum) |
| Vacuum Degree | -0.08 to -0.095 MPa |
| Heating Medium | Saturated steam (0.3 – 0.6 MPa) or hot water |
| Power Consumption | ~18 kW (circulation pump + vacuum pump + control) |
| Evaporation Efficiency | 1.2 – 1.5 kg water per kg steam |
| Dimensions (L×W×H) | Approx. 3.5 × 2.0 × 3.0 m (customizable) |
| Weight | ~4,500 kg |
Specific Benefits for Zinc Oxide Recovery
Traditional wastewater treatment often leads to sludge disposal costs or low-value byproducts. With our forced circulation evaporator, you can recover zinc oxide with a purity of over 98% (depending on feed composition). The concentrated slurry can be further dried into a marketable powder. Key benefits include:
- Resource Recovery: Turn waste into revenue. The recovered zinc oxide can be reused in your own production or sold to battery, pigment, or rubber industries.
- Reduced Waste Volume: The evaporator reduces the original wastewater volume by up to 90-95%, drastically cutting down disposal costs and environmental liability.
- Low Energy Consumption: The vacuum system combined with forced circulation allows efficient heat transfer, resulting in a steam consumption of only 0.8-1.0 tons per ton of evaporated water.
- Reliable Operation: The system is designed for continuous 24/7 operation with automatic anti-fouling cycles. It has a proven track record in many industrial applications.
Why Choose Qingdao Conqinphi Environmental Technology Group? Since our establishment in 2015, we have grown into a comprehensive environmental technology manufacturer with a factory area of 10,000-30,000 square meters and a dedicated team of 201-300 employees. Our annual export value ranges from US$10 Million to US$50 Million, and we have shipped our equipment to clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our products are manufactured under strict quality management systems, including ISO9001 and ISO14000 certifications, ensuring consistent performance and reliability. We provide comprehensive after-sales support, including installation guidance, commissioning, and spare parts supply. Contact us today to discuss your specific wastewater challenges and see how our forced circulation evaporator can help you achieve both environmental compliance and economic gains.
Frequently Asked Questions
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Q: What type of wastewater can this evaporator handle?
A: It is specifically designed for zinc-containing wastewater from sources like electroplating, mining, metal smelting, and chemical processing. However, it can be adapted for other metal recovery applications upon request. -
Q: How much zinc oxide can be recovered per hour?
A: The recovery rate depends on the initial zinc concentration in the wastewater. For a typical feed containing 5-15 g/L zinc, you can expect to obtain 5-15 kg of dry zinc oxide per hour. Laboratory analysis is recommended for accurate prediction. -
Q: What is the maintenance requirement?
A: The plate heat exchanger should be inspected and cleaned every 2-4 weeks depending on fouling tendency. The vacuum pump requires regular oil changes. We provide a detailed maintenance manual and training. -
Q: Can the system be customized for higher capacity?
A: Yes, we offer capacities from 200 L/H up to 20,000 L/H. The 1000 L/H unit is a standard model, but we can design multi-effect or hybrid systems to suit your needs. -
Q: What utilities are needed for installation?
A: The system requires a steam supply (or electric heater option), cooling water for the condenser (or air-cooled option), compressed air for valves (optional), and a 380V/50Hz three-phase power supply. Detailed utility requirements are provided in the technical data sheet. -
Q: How does the vacuum system work?
A: A water ring vacuum pump or steam ejector creates the low pressure inside the evaporator. The non-condensable gases are exhausted, while the water vapor is condensed and discharged as clean distillate. The vacuum level is automatically controlled. -
Q: Is the system compliant with international standards?
A: Yes, our equipment is manufactured according to ISO9001 and ISO14000 standards. We also hold HACCP, SA8000, and other certifications. Electrical components are CE or UL certified upon request. The system can be customized to meet local regulations. -
Q: What after-sales support do you offer?
A: We provide remote technical support, on-site commissioning (travel costs apply), spare parts inventory, and annual maintenance contracts. Our team is available 24/7 for emergency queries.
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